@article {1138, title = {Crystallographic Effects of GaN Nanostructures in Photoelectrochemical Reaction}, journal = {Nano Letters}, volume = {22}, year = {2022}, note = {PMID: 35258977}, pages = {2236-2243}, keywords = {GaN; artificial photosynthesis; nanowire; photoelectrode; surface polarity}, doi = {10.1021/acs.nanolett.1c04220}, url = {https://doi.org/10.1021/acs.nanolett.1c04220}, author = {Xiao, Yixin and Vanka, Srinivas and Pham, Tuan Anh and Dong, Wan Jae and Sun, Yi and Liu, Xianhe and Navid, Ishtiaque Ahmed and Varley, Joel B. and Hajibabaei, Hamed and Hamann, Thomas W. and Ogitsu, Tadashi and Mi, Zetian} } @article {1143, title = {Mechanistic understanding of pH effects on the oxygen evolution reaction}, journal = {Electrochimica Acta}, volume = {405}, year = {2022}, pages = {139810}, abstract = {The oxygen-evolution reaction (OER) is pivotal in many energy-conversion technologies as it is an important counter reaction to others that convert stable chemicals to higher-value products using electrochemistry. The local microenvironment and pH for the anode OER can vary from acidic to neutral to alkaline depending on the system being explored, making definitive mechanistic insights difficult. In this paper, we couple experiments, first-principles calculations based on density functional theory, microkinetics, and transport modeling to explore the entire pH range of the OER. At low current densities, neutral pH values unexpectedly perform better than the acidic and alkaline conditions, and this trend is reversed at higher current densities (> 20~mA cm-2). Using multiscale modeling, this switch is rationalized by a change from a dual-reaction mechanism to a single rate-determining step. The model also shows how the alkaline reaction rates dominate in the middle to high pH range. Furthermore, we explore that the local pH for near-neutral conditions is much different (e.g., 2.4 at the reaction surface vs. 9 in the bulk) than the pH extremes, demonstrating the criticality that transport phenomena plays in kinetic activity.}, keywords = {Electrochemistry, Microkinetics, Oxygen evolution reaction}, issn = {0013-4686}, doi = {https://doi.org/10.1016/j.electacta.2021.139810}, url = {https://www.sciencedirect.com/science/article/pii/S0013468621020934}, author = {Julie C. Fornaciari and Lien-Chun Weng and Shaun M. Alia and Cheng Zhan and Tuan Anh Pham and Alexis T. Bell and Tadashi Ogitsu and Nemanja Danilovic and Adam Z. Weber} } @article {1146, title = {Predicting Oxygen Off-Stoichiometry and Hydrogen Incorporation in Complex Perovskite Oxides}, journal = {Chemistry of Materials}, volume = {34}, year = {2022}, pages = {510-518}, keywords = {charge transfer resistance, Hydrogen Incorporation, Oxygen evolution reaction, Perovskite, Perovskite Oxides, Stoichiometry}, doi = {10.1021/acs.chemmater.0c04765}, url = {https://doi.org/10.1021/acs.chemmater.0c04765}, author = {Millican, Samantha L. and Deml, Ann M. and Papac, Meagan and Zakutayev, Andriy and O{\textquoteright}Hayre, Ryan and Holder, Aaron M. and Musgrave, Charles B. and Stevanovi{\'c}, Vladan} } @article {1149, title = {Spatially resolved performance and degradation in a perfluorinated anion exchange membrane fuel cell}, journal = {Electrochimica Acta}, volume = {406}, year = {2022}, pages = {139812}, abstract = {Anion exchange membrane fuel cells may enable future operation with non-precious metal-based catalysts. These systems have a delicate sensitivity to operating conditions such as humidification levels and the presence of CO2 in the air oxidant stream. We present spatially resolved in-situ performance results that shed light on phenomena that are unique to anion exchange membrane fuel cells. For cell construction, a highly conductive perfluorinated anion exchange polymer was used as the membrane and the material in powder form as the ionomer. Experiments were conducted to investigate the effects of humidification, fuel/oxidant concentration, and carbonation effects on the performance and its distribution in the cell. The results indicated that (i) dry conditions at the cathode have a stronger effect than at the anode on overall cell performance, (ii) performance significantly suffered when humidification was below 90\%, (iii) fuel and oxidant dilution effects lead mass-transport losses and were stronger than flow rate effects, (iv) CO2 in the cathode feed stream creates an equilibration disparity between the inlet and outlet sections and CO2 purging is affected by flooding conditions, and (v) after >500~h of operation, performance deteriorates predominantly at the inlet.}, keywords = {2+1D fuel cell model, Anion Exchange membranes, Cathode dry-out, CO poisoning, Fuel cell durability, Mass transport limitations, Segmented fuel cell}, issn = {0013-4686}, doi = {https://doi.org/10.1016/j.electacta.2021.139812}, url = {https://www.sciencedirect.com/science/article/pii/S0013468621020958}, author = {Ashutosh G. Divekar and Michael R. Gerhardt and Christopher M. Antunes and Luigi Osmieri and Ami C. Yang-Neyerlin and Adam Z. Weber and Bryan S. Pivovar and Guido Bender and Andrew M. Herring} } @article {1133, title = {A Thermogravimetric Temperature-Programmed Thermal Redox Protocol for Rapid Screening of Metal Oxides for Solar Thermochemical Hydrogen Production}, journal = {Frontiers in Energy Research}, volume = {10}, year = {2022}, month = {04}, pages = {856943}, keywords = {concentrated solar, hydrogen lcroduction, Perovskite, screening, thermogravimetry, water splitting}, doi = {10.3389/fenrg.2022.856943}, author = {Sanders, Michael and Bergeson-Keller, Anyka and Coker, Eric and O{\textquoteright}Hayre, Ryan} } @article {1111, title = {Development of a Photoelectrochemically Self-Improving Si/GaN Photocathode for Efficient and Durable H2 Production}, journal = {Nature Materials}, year = {2021}, month = {04/2021}, pages = {1-6}, doi = {10.1038/s41563-021-00965-w}, url = {https://doi.org/10.1038/s41563-021-00965-w}, author = {Guosong Zeng and Tuan Anh Pham and Srinivas Vanka and Guiji Liu and Chengyu Song and Jason K. Cooper and Zetian Mi and Tadashi Ogitsu and Francesca M. Toma} } @article {1119, title = {Double-Site Substitution of Ce Into (Ba, Sr)MnO3 Perovskites for Solar Thermochemical Hydrogen Production}, journal = {ACS Energy Letters}, volume = {6}, year = {2021}, pages = {3037-3043}, keywords = {Combinatorial synthesis, High-throughput experiments, Perovskites}, doi = {https://doi.org/10.1021/acsenergylett.1c01214}, author = {S. J. Heo and M. Sanders and R. O{\textquoteright}Hayre and A. Zakutayev} } @article {1116, title = {Performance and Limits of 2.0 eV Bandgap CuInGaS2 Solar Absorber Integrated With CdS Buffer on F:SnO2 Substrate for Multijunction Photovoltaic and Photoelectrochemical Water Splitting Devices}, volume = {2}, year = {2021}, pages = {5752-5763}, doi = {https://doi.org/10.1039/D1MA00570G}, author = {N. Gaillard and W. Septina and J. Varley and T. Ogitsu and K. K. Ohtaki and H. A. Ishii and J. P. Bradley and C. Muzzillo and K. Zhu and F. Babbe and J. Cooper} } @article {1118, title = {Reduction Thermodynamics of Sr1-xCexMnO3 and CexSr2-xMnO4 Perovskites for Solar Thermochemical Hydrogen Production}, journal = {Energy Technology}, year = {2021}, doi = {https://doi.org/10.1002/ente.202100515}, author = {A. M. Bergeson-Keller and M. D. Sanders and R. P. O{\textquoteright}Hayre} } @article {1176, title = {Self-sustainable protonic ceramic electrochemical cells using a triple conducting electrode for hydrogen and power production}, journal = {Nature Communications}, volume = {11}, year = {2020}, month = {4}, keywords = {HTE; SOEC; Proton exchange membrane electrolysis cell; PrNi0.5Co0.5O3-δ perovskite}, doi = {10.1038/s41467-020-15677-z}, author = {Ding, Hanping and Wu, Wei and Jiang, Chao and Ding, Yong and Bian, Wenjuan and Hu, Boxun and Singh, Prabhakar and Orme, Christopher J. and Wang, Lucun and Zhang, Yunya and Ding, Dong} } @article {1167, title = {Triple ionic{\textendash}electronic conducting oxides for next-generation electrochemical devices}, journal = {Nature Materials}, volume = {20}, year = {2020}, month = {12/2020}, keywords = {electrolysis cells, fuel cells, ionic species transport, membrane reactors, Triple ionic{\textendash}electronic conductors}, issn = {1476-1122}, doi = {10.1038/s41563-020-00854-8}, url = {https://www.osti.gov/biblio/1762454}, author = {Papac, Meagan and Stevanovi{\'c}, Vladan and Zakutayev, Andriy and O{\textquoteright}Hayre, Ryan} } @inbook {1073, title = {HydroGEN Overview: A Consortium on Advanced Water Splitting Materials (AWSM)}, booktitle = {FY 2018 DOE Hydrogen and Fuel Cells Program Annual Progress Report}, year = {2019}, author = {Huyen N. Dinh and R Boardman and A.H. McDaniel and H Colon-Mercado and T. Ogitsu and A.Z. Weber} } @article {1188, title = {Long-term stability studies of a semiconductor photoelectrode in three-electrode configuration}, journal = {Journal of Materials Chemistry A}, volume = {7}, year = {2019}, pages = {27612-27619}, abstract = {Improving the stability of semiconductor materials is one of the major challenges for sustainable and economic photoelectrochemical water splitting. N-terminated GaN nanostructures have emerged as a practical protective layer for conventional high efficiency but unstable Si and III{\textendash}V photoelectrodes due to their near-perfect conduction band-alignment, which enables efficient extraction of photo-generated electrons, and N-terminated surfaces, which protects against chemical and photo-corrosion. Here, we demonstrate that Pt-decorated GaN nanostructures on an n+{\textendash}p Si photocathode can exhibit an ultrahigh stability of 3000 h (i.e., over 500 days for usable sunlight \~{}5.5 h per day) at a large photocurrent density (>35 mA cm-2) in three-electrode configuration under AM 1.5G one-sun illumination. The measured applied bias photon-to-current efficiency of 11.9\%, with an excellent onset potential of \~{}0.56 V vs. RHE, is one of the highest values reported for a Si photocathode under AM 1.5G one-sun illumination. This study provides a paradigm shift for the design and development of semiconductor photoelectrodes for PEC water splitting: stability is no longer limited by the light absorber, but rather by co-catalyst particles.}, keywords = {durability, GaN nanowires, PEC, Photocathode, Pt hydrogen evolution catalyst, Silicon}, doi = {10.1039/C9TA09926C}, url = {http://dx.doi.org/10.1039/C9TA09926C}, author = {Vanka, Srinivas and Sun, Kai and Zeng, Guosong and Pham, Tuan Anh and Toma, Francesca Maria and Ogitsu, Tadashi and Mi, Zetian} } @article {1074, title = {New tolerance factor to predict the stability of perovskite oxides and halides}, journal = {Science Advances}, volume = {5}, year = {2019}, note = {

Copyright {\textcopyright} 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).. This is an open-access article distributed under the terms of the Creative Commons Attribution license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

}, month = {02/2019}, pages = {eaav0693}, abstract = {

Published on February 1st, 2019. Predicting the stability of the perovskite structure remains a long-standing challenge for the discovery of new functional materials for many applications including photovoltaics and electrocatalysts. We developed an accurate, physically interpretable, and one-dimensional tolerance factor, τ, that correctly predicts 92\% of compounds as perovskite or nonperovskite for an experimental dataset of 576 ABX3 materials (X = O2-, F-, Cl-, Br-, I-) using a novel data analytics approach based on SISSO (sure independence screening and sparsifying operator). τ is shown to generalize outside the training set for 1034 experimentally realized single and double perovskites (91\% accuracy) and is applied to identify 23,314 new double perovskites (A2BB'X6) ranked by their probability of being stable as perovskite. This work guides experimentalists and theorists toward which perovskites are most likely to be successfully synthesized and demonstrates an approach to descriptor identification that can be extended to arbitrary applications beyond perovskite stability predictions. Simple and interpretable data-driven descriptor accurately predicts the synthesizability of single and double perovskites.

}, issn = {2375-2548}, doi = {10.1126/sciadv.aav0693}, url = {https://advances.sciencemag.org/content/5/2/eaav0693}, author = {Christopher J. Bartel and Christopher Sutton and Bryan R. Goldsmith and Runhai Ouyang and Charles B. Musgrave and Luca M. Ghiringhelli and Matthias Scheffler} } @article {1075, title = {Phase Identification of the Layered Perovskite CexSr2{\textendash}xMnO4 and Application for Solar Thermochemical Water Splitting}, journal = {Inorganic Chemistry}, volume = {58}, year = {2019}, pages = {7705-7714}, abstract = {

Published on June 17th, 2019. Ruddlesden{\textendash}Popper (layered perovskite) phases are attracting significant interest because of their unique potential for many applications requiring mixed ionic and electronic conductivity. Here we report a new, previously undiscovered layered perovskite of composition, CexSr2{\textendash}xMnO4 (x = 0.1, 0.2, and 0.3). Furthermore, we demonstrate that this new system is suitable for solar thermochemical hydrogen production (STCH). Synchrotron radiation X-ray diffraction and transmission electron microscopy are performed to characterize this new system. Density functional theory calculations of phase stability and oxygen vacancy formation energy (1.76, 2.24, and 2.66 eV/O atom, respectively with increasing Ce content) reinforce the potential of this phase for STCH application. Experimental hydrogen production results show that this materials system produces 2{\textendash}3 times more hydrogen than the benchmark STCH oxide ceria at a reduction temperature of 1400 {\textdegree}C and an oxidation temperature of 1000 {\textdegree}C.

}, issn = {0020-1669}, doi = {10.1021/acs.inorgchem.8b03487}, url = {https://doi.org/10.1021/acs.inorgchem.8b03487}, author = {Debora R. Barcellos and Francisco G. Coury and Antoine Emery and Michael Sanders and Jianhua Tong and Anthony McDaniel and Christopher Wolverton and Michael Kaufman and Ryan O{\textquoteright}Hayre} } @article {1098, title = {Wide-Bandgap Cu(In,Ga)S2 Photocathodes Integrated on Transparent Conductive F:SnO2 Substrates for Chalcopyrite-Based Water Splitting Tandem Devices}, journal = {ACS Applied Energy Materials}, volume = {2}, year = {2019}, month = {08/2019}, pages = {5515-5524}, abstract = {

Published on August 26th, 2019.

}, issn = {2574-0962, 2574-0962}, doi = {10.1021/acsaem.9b00690}, url = {http://pubs.acs.org/doi/10.1021/acsaem.9b00690}, author = {Nicolas Gaillard and Dixit Prasher and Marina Chong and Alexander Deangelis and Kimberly Horsley and Hope A. Ishii and John P. Bradley and Joel Varley and Tadashi Ogitsu} } @article {990, title = {Assessing the role of hydrogen in Fermi-level pinning in chalcopyrite and kesterite solar absorbers from first-principles calculations}, journal = {Journal of Applied Physics}, volume = {123}, year = {2018}, note = {

{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n\ \n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright}

}, pages = {161408}, abstract = {

Publshed on March 7th, 2018. Understanding the impact of impurities in solar absorbers is critical to engineering high-performance in devices, particularly over extended periods of time. Here, we use hybrid functional calculations to explore the role of hydrogen interstitial (Hi) defects in the electronic properties of a number of attractive solar absorbers within the chalcopyrite and kesterite families to identify how this common impurity may influence device performance. Our results identify that Hi can inhibit the highly p-type conditions desirable for several higher-band gap absorbers and that H incorporation could detrimentally affect the open-circuit voltage (Voc) and limit device efficiencies. Additionally, we find that Hi can drive the Fermi level away from the valence band edge enough to lead to n-type conductivity in a number of chalcopyrite and kesterite absorbers, particularly those containing Ag rather than Cu. We find that these effects can lead to interfacial Fermi-level pinning that can qualitatively explain the observed performance in high-Ga content CIGSe solar cells that exhibit saturation in the Voc with increasing band gap. Our results suggest that compositional grading rather than bulk alloying, such as by creating In-rich surfaces, may be a better strategy to favorably engineering improved thin-film photovoltaics with larger-band gap absorbers.

}, issn = {0021-8979}, doi = {10.1063/1.5006272}, url = {https://aip.scitation.org/doi/10.1063/1.5006272}, author = {J. B. Varley and V. Lordi and T. Ogitsu and A. Deangelis and K. Horsley and N. Gaillard} } @article {785, title = {BaCe 0.25 Mn 0.75 O 3-δ {\textemdash}a promising perovskite-type oxide for solar thermochemical hydrogen production}, journal = {Energy \& Environmental Science}, year = {2018}, note = {

{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n\ \n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright}

}, issn = {1754-5692, 1754-5706}, doi = {10.1039/C8EE01989D}, url = {http://xlink.rsc.org/?DOI=C8EE01989D}, author = {Debora R. Barcellos and Michael D. Sanders and Jianhua Tong and Anthony H. McDaniel and Ryan P. O{\textquoteright}Hayre} } @article {776, title = {Cosputtered Calcium Manganese Oxide Electrodes for Water Oxidation}, journal = {Inorganic Chemistry}, volume = {57}, year = {2018}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, pages = {785-792}, abstract = {Published on January 16th, 2018.}, issn = {0020-1669, 1520-510X}, doi = {10.1021/acs.inorgchem.7b02717}, url = {http://pubs.acs.org/doi/10.1021/acs.inorgchem.7b02717}, author = {Hamed Simchi and Kayla A. Cooley and Jonas Ohms and Lingqin Huang and Philipp Kurz and Suzanne E. Mohney} } @article {1041, title = {Integrating Ab Initio Simulations and X-ray Photoelectron Spectroscopy: Toward A Realistic Description of Oxidized Solid/Liquid Interfaces}, journal = {The Journal of Physical Chemistry Letters}, volume = {9}, year = {2018}, note = {

{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n\ \n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright}

}, pages = {194-203}, abstract = {

Published on January 4th, 2019. Many energy storage and conversion devices rely on processes that take place at complex interfaces, where structural and chemical properties are often difficult to probe under operating conditions. A primary example is solar water splitting using high-performance photoelectrochemical cells, where surface chemistry, including native oxide formation, affects hydrogen generation. In this Perspective, we discuss some of the challenges associated with interrogating interface chemistry, and how they may be overcome by integrating high-level first-principles calculations of explicit interfaces with ambient pressure X-ray photoelectron spectroscopy and direct spectroscopic simulations. We illustrate the benefit of this combined approach toward insights into native oxide chemistry at prototypical InP/water and GaP/water interfaces. This example suggests a more general roadmap for obtaining a realistic and reliable description of the chemistry of complex interfaces by combining state-of-the-art computational and experimental techniques.

}, issn = {1948-7185}, doi = {10.1021/acs.jpclett.7b01382}, url = {https://doi.org/10.1021/acs.jpclett.7b01382}, author = {Tuan Anh Pham and Xueqiang Zhang and Brandon C. Wood and David Prendergast and Sylwia Ptasinska and Tadashi Ogitsu} } @article {1097, title = {(Invited) HydroGEN: An AWSM Energy Materials Network}, journal = {ECS Transactions}, volume = {85}, year = {2018}, month = {05/2018}, pages = {3-14}, abstract = {

The HydroGEN (https://www.h2awsm.org/) energy materials network (EMN) aims to accelerate the research and development (R\&D) of advanced water splitting (AWS) technologies for clean, sustainable hydrogen production. Announced in October 2016, the HydroGEN EMN comprises six core National Laboratories and focuses on four AWS pathways: low- and high-temperature electrolysis, photoelectrochemical, and solar thermochemical water splitting. The HydroGEN consortium offers an extensive collection of materials research capabilities for addressing R\&D challenges in discovery and design, efficacy and efficiency, durability and cost. Leveraging the HydroGEN Consortium{\textquoteright}s technical experts and broad collection of unique resource capabilities is expected to advance the maturity and technology readiness levels in each advanced water splitting technology pathway.

}, issn = {1938-6737, 1938-5862}, doi = {10.1149/08511.0003ecst}, url = {http://ecst.ecsdl.org/content/85/11/3}, author = {James W. Vickers and Huyen N. Dinh and Katie Randolph and Adam Z. Weber and Anthony H. McDaniel and Richard Boardman and Tadashi Ogitsu and Hector Colon-Mercado and David Peterson and Eric L. Miller} } @article {1030, title = {A Decade of Solid Oxide Electrolysis Improvements at DTU Energy}, journal = {ECS Transactions}, volume = {75}, year = {2017}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, pages = {3-14}, abstract = {Published on January 11th, 2017. Solid oxide electrolysis cells (SOECs) can efficiently convert electrical energy (e.g. surplus wind power) to energy stored in fuels such as hydrogen or other synthetic fuels. Performance and durability of the SOEC has increased orders of magnitudes within the last decade. This paper presents a short review of the R\&D work on SOEC single cells conducted at DTU Energy from 2005 to 2015. The SOEC improvements have involved increasing the of the oxygen electrode performance, elimination of impurities in the feed streams, optimization of processing routes, and fuel electrode structure optimization. All together, these improvements have led to a decrease in long-term degradation rate from ~40 \%/kh to ~0.4 \%/kh for steam electrolysis at -1 A/cm2, while the initial area specific resistance has been decreased from 0.44 Wcm2 to 0.15 Wcm2 at -0.5 A/cm2 and 750 {\textdegree}C.}, issn = {1938-6737, 1938-5862}, doi = {10.1149/07542.0003ecst}, url = {http://ecst.ecsdl.org/content/75/42/3}, author = {Anne Hauch and Karen Brodersen and Ming Chen and Christopher Graves and S{\o}ren H{\o}jgaard Jensen and Peter Stanley J{\o}rgensen and Peter Vang Hendriksen and Mogens Bjerg Mogensen and Simona Ovtar and Xiufu Sun} } @article {988, title = {Self-optimizing, highly surface-active layered metal dichalcogenide catalysts for hydrogen evolution}, journal = {Nature Energy}, volume = {6}, year = {2017}, note = {

{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n\ \n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright}

}, pages = {17127}, author = {Yuanyue Liu and Jingjie Wu and Ken P Hackenberg and Y. Morris Wang and Yingchao Yang and Kunttal Keyshar and Jing Gu and Tadashi Ogitsu and Robert Vajtai and Jun Lou and Pulickel M. Ajayan and Brandon C. Wood and Boris I. Yakobson} } @article {810, title = {Characterization of Two-Step Tin-Based Redox System for Thermochemical Fuel Production from Solar-Driven CO 2 and H 2 O Splitting Cycle}, journal = {Industrial \& Engineering Chemistry Research}, volume = {53}, year = {2014}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, pages = {5668-5677}, abstract = {Published on April 9th, 2014.}, issn = {0888-5885, 1520-5045}, doi = {10.1021/ie500206u}, url = {http://pubs.acs.org/doi/abs/10.1021/ie500206u}, author = {Ga{\"e}l Lev{\^e}que and St{\'e}phane Abanades and Jean-Claude Jumas and Josette Olivier-Fourcade} } @article {941, title = {Nonstoichiometric perovskite oxides for solar thermochemical H2 and CO production}, journal = {Energy Procedia}, volume = {49}, year = {2014}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, pages = {2009-2018}, issn = {18766102}, doi = {10.1016/j.egypro.2014.03.213}, url = {http://linkinghub.elsevier.com/retrieve/pii/S1876610214006675}, author = {A.H. McDaniel and A. Ambrosini and E.N. Coker and J.E. Miller and W.C. Chueh and R. O{\textquoteright}Hayre and J. Tong} } @article {939, title = {Oxide enthalpy of formation and band gap energy as accurate descriptors of oxygen vacancy formation energetics}, journal = {Energy \& Environmental Science}, volume = {7}, year = {2014}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, pages = {1996}, issn = {1754-5692, 1754-5706}, doi = {10.1039/c3ee43874k}, url = {http://xlink.rsc.org/?DOI=c3ee43874k}, author = {Ann M. Deml and Vladan Stevanovi{\'c} and Christopher L. Muhich and Charles B. Musgrave and Ryan O{\textquoteright}Hayre} } @article {917, title = {Sr- and Mn-doped LaAlO3-δ for solar thermochemical H2 and CO production}, journal = {Energy \& Environmental Science}, volume = {6}, year = {2013}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, pages = {2424-2428}, issn = {1754-5692}, doi = {10.1039/C3EE41372A}, url = {http://dx.doi.org/10.1039/C3EE41372A}, author = {Anthony H. McDaniel and Elizabeth C. Miller and Darwin Arifin and Andrea Ambrosini and Eric N. Coker and Ryan O{\textquoteright}Hayre and William C. Chueh and Jianhua Tong} } @article {908, title = {Oxygen Transport and Isotopic Exchange in Iron Oxide/YSZ Thermochemically-active Materials via Splitting of C(18O)2 at High Temperature Studied by Thermogravimetric Analysis and Secondary Ion Mass Spectrometry}, journal = {Journal of Materials Chemistry}, volume = {22}, year = {2012}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, pages = {6726}, issn = {0959-9428, 1364-5501}, doi = {10.1039/c2jm15324f}, url = {http://xlink.rsc.org/?DOI=c2jm15324f}, author = {Eric N. Coker and James A. Ohlhausen and Andrea Ambrosini and James E. Miller} } @article {799, title = {Synthesis and characterization of oxide materials for thermochemical CO2 splitting using concentrated solar energy.}, year = {2011}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, author = {Andrea Ambrosini and Ellen B Stechel and Eric Nicholas Coker and James E Miller and James Anthony Ohlhausen and Mark A Rodriguez} } @article {894, title = {Concentrated solar power for renewable electricity and hydrogen production from water{\textemdash}a review}, journal = {Energy \& Environmental Science}, volume = {3}, year = {2010}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, pages = {1398}, issn = {1754-5692, 1754-5706}, doi = {10.1039/b922607a}, url = {http://xlink.rsc.org/?DOI=b922607a}, author = {B. Coelho and A. C. Oliveira and A. Mendes} } @article {1021, title = {Corrosion of metal bipolar plates for PEM fuel cells: A review}, journal = {International Journal of Hydrogen Energy}, volume = {35}, year = {2010}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, pages = {3632-3647}, abstract = {Published on April 1st, 2010. PEM fuel cells are of prime interest in transportation applications due to their relatively high efficiency and low pollutant emissions. Bipolar plates are the key components of these devices as they account for significant fractions of their weight and cost. Metallic materials have advantages over graphite-based ones because of their higher mechanical strength and better electrical conductivity. However, corrosion resistance is a major concern that remains to be solved as metals may develop oxide layers that increase electrical resistivity, thus lowering the fuel cell efficiency. This paper aims to present the main results found in recent literature about the corrosion performance of metallic bipolar plates.}, issn = {0360-3199}, doi = {10.1016/j.ijhydene.2010.01.059}, url = {http://www.sciencedirect.com/science/article/pii/S0360319910001308}, author = {Renato A. Antunes and Mara Cristina L. Oliveira and Gerhard Ett and Volkmar Ett} } @article {1134, title = {Assessing the Oxidative Stability of Anion Exchange Membranes in Oxygen Saturated Aqueous Alkaline Solutions}, journal = {Frontiers in Energy Research}, volume = {10}, month = {2022}, keywords = {anion exchange membrane, conductivity, electrolysis, protocol and guidelines, stability}, doi = {10.3389/fenrg.2022.871851}, author = {Arges, Christopher G. and Ramani, Vijay and Wang, Zhongyang and Ouimet, Ryan J.} } @article {975, title = {Design of a pilot scale directly irradiated, high temperature, and low pressure moving particle cavity chamber for metal oxide reduction}, journal = {Solar Energy}, volume = {157}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, pages = {365-376}, issn = {0038092X}, doi = {10.1016/j.solener.2017.08.040}, url = {http://linkinghub.elsevier.com/retrieve/pii/S0038092X17307181}, author = {Abhishek Singh and Justin Lapp and Johannes Grobbel and Stefan Brendelberger and Jan P. Reinhold and Lamark Olivera and Ivan Ermanoski and Nathan P. Siegel and Anthony McDaniel and Martin Roeb and Christian Sattler} } @article {984, title = {Giant onsite electronic entropy enhances the performance of ceria for water splitting}, journal = {Nature Communications}, volume = {8}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, issn = {2041-1723}, doi = {10.1038/s41467-017-00381-2}, url = {http://www.nature.com/articles/s41467-017-00381-2}, author = {S. Shahab Naghavi and Antoine A. Emery and Heine A. Hansen and Fei Zhou and Vidvuds Ozolins and Chris Wolverton} } @article {1039, title = {High Temperature Electrolysis for Hydrogen Production from Nuclear Energy {\textendash} TechnologySummary}, number = {INL/EXT-09-16140}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, abstract = {The U.S. Department of Energy{\textquoteright}s Office of Scientific and Technical Information}, url = {https://www.osti.gov/biblio/978368-high-temperature-electrolysis-hydrogen-production-from-nuclear-energy-technologysummary}, author = {J. E. O{\textquoteright}Brien and C. M. Stoots and J. S. Herring and M. G. McKellar and E. A. Harvego and M. S. Sohal and K. G. Condie} } @article {847, title = {Intrinsic material properties dictating oxygen vacancy formation energetics in metal oxides}, journal = {The Journal of Physical Chemistry Letters}, volume = {6}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, pages = {1948-1953}, abstract = {*The authors use first-principles calculations to explore the relationship between the energy required to form an oxygen vacancy and intrinsic bulk material properties. They derive a simple model that predicts vacancy formation energy at substantially reduced computational cost which may facilitate high throughput computational screening of STC materials.}, issn = {1948-7185}, doi = {10.1021/acs.jpclett.5b00710}, url = {http://pubs.acs.org/doi/abs/10.1021/acs.jpclett.5b00710}, author = {Ann M. Deml and Aaron M. Holder and Ryan P. O{\textquoteright}Hayre and Charles B. Musgrave and Vladan Stevanovi{\'c}} } @article {1009, title = {Materials for Proton Exchange Membrane water electrolyzer bipolar plates}, journal = {International Journal of Hydrogen Energy}, volume = {42}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, pages = {2713-2723}, abstract = {Titanium based BiPolar Plates (BPPs) are commonly used in Proton Exchange Membrane Water Electrolyzers (PEMWEs) today as they can withstand the harsh operating conditions experienced inside an operating PEM water electrolyzer. In particular, the high anode potential and acidic nature of the PEM is crucial for BPP performance. In this work we expand the investigation of non-coated materials at relevant operating conditions to include molybdenum, 254 SMO, tungsten, AISI 316L, AISI 304L, Inconel 625, niobium and tantalum, in addition to Titanium gr. 2. Pre-designed potentiostatic and potentiodynamic tests at potentials up to 2.0 VSHE were performed in addition to Interfacial Contact Resistance (ICR) and weight loss measurements. Scanning Electron Microscopy (SEM) imaging was conducted to observe morphology changes during the electrochemical tests. Titanium, tantalum and niobium experienced little or no weight change during potentiostatic polarization, while for AISI 304L, AISI 316L and tungsten the measured weight loss was much lower than the weight loss calculated from currents produced. When the potentiostatic test was prolonged for titanium, the ICR was found to increase with time. Auger Electron Spectroscopy measurements confirmed that the increase in ICR for titanium, tantalum and niobium is related to an increased thickness of surface oxides.}, issn = {0360-3199}, doi = {10.1016/j.ijhydene.2016.11.106}, url = {http://www.sciencedirect.com/science/article/pii/S0360319916307613}, author = {Sigrid L{\ae}dre and Ole Edvard Kongstein and Anders Oedegaard and H{\r a}vard Karoliussen and Frode Seland} } @article {1007, title = {Methods of photoelectrode characterization with high spatial and temporal resolution}, journal = {Energy \& Environmental Science}, volume = {8}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, pages = {2863-2885}, abstract = {Materials and photoelectrode architectures that are highly efficient, extremely stable, and made from low cost materials are required for commercially viable photoelectrochemical (PEC) water-splitting technology. A key challenge is the heterogeneous nature of real-world materials, which often possess spatial variation in their crystal structure, morphology, and/or composition at the nano-, micro-, or macro-scale. Different structures and compositions can have vastly different properties and can therefore strongly influence the overall performance of the photoelectrode through complex structure{\textendash}property relationships. A complete understanding of photoelectrode materials would also involve elucidation of processes such as carrier collection and electrochemical charge transfer that occur at very fast time scales. We present herein an overview of a broad suite of experimental and computational tools that can be used to define the structure{\textendash}property relationships of photoelectrode materials at small dimensions and on fast time scales. A major focus is on in situ scanning-probe measurement (SPM) techniques that possess the ability to measure differences in optical, electronic, catalytic, and physical properties with nano- or micro-scale spatial resolution. In situ ultrafast spectroscopic techniques, used to probe carrier dynamics involved with processes such as carrier generation, recombination, and interfacial charge transport, are also discussed. Complementing all of these experimental techniques are computational atomistic modeling tools, which can be invaluable for interpreting experimental results, aiding in materials discovery, and interrogating PEC processes at length and time scales not currently accessible by experiment. In addition to reviewing the basic capabilities of these experimental and computational techniques, we highlight key opportunities and limitations of applying these tools for the development of PEC materials.}, issn = {1754-5706}, doi = {10.1039/C5EE00835B}, url = {http://pubs.rsc.org/en/content/articlelanding/2015/ee/c5ee00835b}, author = {Daniel V. Esposito and Jason B. Baxter and Jimmy John and Nathan S. Lewis and Thomas P. Moffat and Tadashi Ogitsu and Glen D. O{\textquoteright}Neil and Tuan Anh Pham and A. Alec Talin and Jesus M. Velazquez and Brandon C. Wood} } @article {925, title = {Modification of CeO2 on the redox property of Fe2O3}, journal = {Materials Letters}, volume = {93}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, pages = {129-132}, issn = {0167577X}, doi = {10.1016/j.matlet.2012.09.039}, url = {http://linkinghub.elsevier.com/retrieve/pii/S0167577X12013195}, author = {Kongzhai Li and Masaaki Haneda and Zhenhua Gu and Hua Wang and Masakuni Ozawa} } @conference {989, title = {Thermodynamic Considerations for Thermal Water Splitting Processes and High Temperature Electrolysis}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, publisher = {ASME}, organization = {ASME}, address = {Boston, Massachusetts, USA}, abstract = {A general thermodynamic analysis of hydrogen production based on thermal water splitting processes is presented. Results of the analysis show that the overall efficiency of any thermal water splitting process operating between two temperature limits is proportional to the Carnot efficiency. Implications of thermodynamic efficiency limits and the impacts of loss mechanisms and operating conditions are discussed as they pertain specifically to hydrogen production based on high-temperature electrolysis. Overall system performance predictions are also presented for high-temperature electrolysis plants powered by three different advanced nuclear reactor types, over their respective operating temperature ranges.}, author = {J. E. O{\textquoteright}Brien} } @article {938, title = {Tunable oxygen vacancy formation energetics in the complex perovskite oxide SrxLa1{\textendash}xMnyAl1{\textendash}yO3}, journal = {Chemistry of Materials}, volume = {26}, note = {{\textquoteright}doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen{\textquoteright} {\textquoteright}\n - jyoungstrom{\textquoteright} {\textquoteright}Jason thinks this is great.\n~\n - jyoungstrom{\textquoteright} {\textquoteright}\n - estechel{\textquoteright} }, pages = {6595-6602}, issn = {0897-4756, 1520-5002}, doi = {10.1021/cm5033755}, url = {http://pubs.acs.org/doi/abs/10.1021/cm5033755}, author = {Ann M. Deml and Vladan Stevanovi{\'c} and Aaron M. Holder and Michael Sanders and Ryan O{\textquoteright}Hayre and Charles B. Musgrave} }