@article {1137,
	title = {Considerations for the Accurate Measurement of Incident Photon to Current Efficiency in Photoelectrochemical Cells},
	journal = {Frontiers in Energy Research},
	volume = {9},
	year = {2022},
	month = {2022},
	abstract = {In this paper we review some of the considerations and potential sources of error when conducting Incident Photon to Current Efficiency (IPCE) measurements, with focus on photoelectrochemical (PEC) cells for water splitting. The PEC aspect introduces challenges for accurate measurements often not encountered in dry PV cells. These can include slow charge transfer dynamics and, depending on conditions (such as a white light bias, which is important for samples with non-linear response to light intensity), possible composition changes, mostly at the surface, that a sample may gradually undergo as a result of chemical interactions with the aqueous electrolyte. These can introduce often-overlooked dependencies related to the timing of the measurement, such as a slower measurement requirement in the case of slow charge transfer dynamics, to accurately capture the steady-state response of the system. Fluctuations of the probe beam can be particularly acute when a Xe lamp with monochromator is used, and longer scanning times also allow for appreciable changes in the sample environment, especially when the sample is under realistically strong white light bias. The IPCE measurement system and procedure need to be capable of providing accurate measurements under specific conditions, according to sample and operating requirements. To illustrate these issues, complications, and solution options, we present example measurements of hematite photoanodes, leading to the use of a motorized rotating mirror stage to solve the inherent fluctuation and drift-related problems. For an example of potential pitfalls in IPCE measurements of metastable samples, we present measurements of BiVO<sub>4</sub> photoanodes, which had changing IPCE spectral shapes under white-light bias.},
	keywords = {device characterisation, EQE, IPCE, measurement technique, photoelectrochemical},
	issn = {2296-598X},
	doi = {10.3389/fenrg.2021.726069},
	url = {https://www.frontiersin.org/article/10.3389/fenrg.2021.726069},
	author = {Ellis, David S. and Piekner, Yifat and Grave, Daniel A. and Schnell, Patrick and Rothschild, Avner}
}
@article {1140,
	title = {Formation of 6H-Ba3Ce0.75Mn2.25O9 During Thermochemical Reduction of 12R-Ba4CeMn3O12: Identification of a Polytype in the Ba(Ce,Mn)O3 Family},
	journal = {Inorganic Chemistry},
	volume = {61},
	year = {2022},
	month = {4},
	keywords = {analytical chemistry, inorganic, layered perovskite, organic, oxide, physical, polytype, STCH, thermochemistry},
	doi = {10.1021/acs.inorgchem.2c00282},
	author = {Strange, Nicholas A. and Park, James Eujin and Goyal, Anuj and Bell, Robert T. and Trindell, Jamie A. and Sugar, Joshua D. and Stone, Kevin H. and Coker, Eric N. and Lany, Stephan and Shulda, Sarah and Ginley, David S.}
}
@article {1142,
	title = {Intermediate Temperature Solid Oxide Cell with a Barrier Layer Free Oxygen Electrode and Phase Inversion Derived Hydrogen Electrode},
	journal = {Journal of the Electrochemical Society},
	volume = {169},
	year = {2022},
	month = {3},
	keywords = {area specific resistance, cathode, electrical conductivity, intermediate temperature-operating solid oxide fuel cell, layered perovskite},
	doi = {10.1149/1945-7111/ac565a},
	author = {Zhang, Yongliang and Xu, Nansheng and Tang, Qiming and Huang, Kevin}
}
@article {1144,
	title = {Migration of inclusions in a matrix due to a spatially varying interface energy},
	journal = {Scripta Materialia},
	volume = {206},
	year = {2022},
	pages = {114235},
	abstract = {An interfacial energy can be a function of a bulk field such as temperature or electric field. We find that in a system with a gradient in temperature or electric potential, the resulting variation in interfacial energy can induce a particle to migrate by either surface or bulk diffusion. For a circular particle under a constant unidirectional gradient in the bulk field, the field dependence of the interfacial energy induces a circular particle to move as a circle at a constant velocity along the direction from higher to lower interfacial energy. A linear stability analysis of this steady state migration suggests that perturbations will damp out as time evolves, and thus under these conditions a migrating circular particle is morphologically stable. Other spatial distributions of interface energy can lead to the distortion of an initially circular shaped particle during migration. A phase field model is developed that captures these distortions and verifies the theoretical results mentioned above.},
	keywords = {Bulk diffusion, Interface diffusion, Interface energy depends on a field varying with location, Particle migration},
	issn = {1359-6462},
	doi = {https://doi.org/10.1016/j.scriptamat.2021.114235},
	url = {https://www.sciencedirect.com/science/article/pii/S1359646221005157},
	author = {Qian Zhang and Scott Barnett and Peter Voorhees}
}
@article {1154,
	title = {Effect of Nanoscale Ce0.8Gd0.2O2-δ Infiltrant and Steam Content on Ni{\textendash}(Y2O3)0.08(ZrO2)0.92 Fuel Electrode Degradation during High-Temperature Electrolysis},
	journal = {Nano Letters},
	volume = {21},
	year = {2021},
	note = {PMID: 34606281},
	pages = {8363-8369},
	keywords = {degredation, duel electrode, infiltration, solid oxide electrolysis cell},
	doi = {10.1021/acs.nanolett.1c02937},
	url = {https://doi.org/10.1021/acs.nanolett.1c02937},
	author = {Park, Beom-Kyeong and Cox, Dalton and Barnett, Scott A.}
}
@article {1158,
	title = {Influence of Supporting Electrolyte on Hydroxide Exchange Membrane Water Electrolysis Performance: Anolyte},
	journal = {Journal of The Electrochemical Society},
	volume = {168},
	year = {2021},
	month = {08/2021},
	pages = {084512},
	abstract = {Hydroxide-exchange-membrane water electrolysis (HEMWE) is an emerging hydrogen-production pathway that combines many advantages of incumbent alkaline water electrolysis (AWE) and proton-exchange-membrane water electrolysis (PEMWE). Advancement in HEMWE has been accelerated with the development of stable and conductive hydroxide exchange membranes (HEMs) and a more comprehensive understanding of alkaline gas-evolving kinetics. However, performance and durability without supporting electrolytes (SELs) remain inferior to PEMWE and AWE and little is known about the role and impact of the SELs. This study investigates the effects of SELs used as anolyte solutions in HEMWEs including cation-type, anion-type, SEL conductivity and pH, presence of carbonates and increased cation/OH- ratios on cell voltage and stability. We report our findings that (i) cell potential and high-frequency resistance did not correlate with anolyte SEL conductivity, (ii) cation-type influences cell voltage at low current densities (<50 mA cm-2) as predicted by half-cell measurements, (iii) increased cation/OH- ratio causes increased overpotentials, and (iv) carbonates are exchanged in the HEM but removed via self-purging at high current density. Overall, this study concludes that concentrated KOH is still the best SEL.},
	keywords = {hydrogen production pathway, Hydroxide exchange membrane, incumbent alkaline, proton exchange membrane, supporting electrolytes, water electrolysis},
	doi = {10.1149/1945-7111/ac1dcd},
	url = {https://doi.org/10.1149/1945-7111/ac1dcd},
	author = {Aleksandr Kiessling and Julie C. Fornaciari and Grace Anderson and Xiong Peng and Andreas Gerstmayr and Michael R. Gerhardt and Samuel McKinney and Alexey Serov and Yu Seung Kim and Barr Zulevi and Adam Z. Weber and Nemanja Danilovic}
}
@article {1152,
	title = {A mini-review on proton conduction of BaZrO 3 -based perovskite electrolytes},
	journal = {Journal of Physics: Energy},
	volume = {3},
	year = {2021},
	month = {07},
	pages = {032019},
	keywords = {ceramics, dopant, electrolyte, electrolytic cell, energy conversion, fuel cell, hydration, interaction, mobility, oxide, proton, proton conduction},
	doi = {10.1088/2515-7655/ac12ab},
	author = {Vera, Clarita and Ding, Hanping and Peterson, David and Gibbons, William and Zhou, Meng and Ding, Dong}
}
@article {1161,
	title = {Multiple Reaction Pathways for the Oxygen Evolution Reaction May Contribute to IrO2 (110){\textquoteright}s High Activity},
	journal = {Journal of The Electrochemical Society},
	volume = {168},
	year = {2021},
	month = {02/2021},
	pages = {024506},
	abstract = {Density functional theory calculations in conjunction with statistical mechanical arguments are performed on the rutile IrO2 (110) facet in order to characterize multiple reaction pathways on the surface at the highest active limit (the stoichiometric surface with all metal sites available) and at the lowest active limit (the oxygen-terminated surface). Alternative pathways to the oxygen evolution reaction (OER) are found, with multiple pathways determined at each step of the four proton-coupled electron transfer reaction. Of particular interest is the detailed characterization of a co-adsorption pathway utilizing neighboring, adsorbed O, OH species in order to evolve oxygen; activation energies of this pathway are <0.5 eV and therefore easily surmountable at the high operating potentials of OER. We also determined that surface Ir atoms can potentially participate in deprotonating an OOH* intermediate; the activation energy to this is 0.67 eV on the oxygen-terminated surface. These theoretical findings explain in part the high activity present in iridium oxide catalysts and also provide insight into the mechanistic pathways available on metal oxide catalysts, which may require the concerted interaction of nearest neighbor co-adsorbates to produce chemicals of interest.},
	keywords = {DFT modeling, Iridium oxide, Oxygen evolution},
	doi = {10.1149/1945-7111/abdeea},
	url = {https://doi.org/10.1149/1945-7111/abdeea},
	author = {Mai-Anh Ha and Ross E. Larsen}
}
@article {1120,
	title = {Outstanding Properties and Performance of CaTi0.5Mn0.5O3{\textendash}δ for Solar-Driven Thermochemical Hydrogen Production},
	journal = {Matter},
	volume = {4},
	year = {2021},
	pages = {688-708},
	keywords = {inorganic perovskite, oxygen non-stoichiometry, phase transition, solar fuel, thermo-kinetic limit, thermochemical hydrogen production, thermodynamic properties},
	doi = {https://doi.org/10.1016/j.matt.2020.11.016},
	author = {X. Qian and J. He and E. Mastronardo and B. Baldassarri and W. Yuan and C. Wolverton and S. M. Haile}
}
@article {1165,
	title = {Scaleup and manufacturability of symmetric-structured metal-supported solid oxide fuel cells},
	journal = {Journal of Power Sources},
	volume = {489},
	year = {2021},
	pages = {229439},
	abstract = {Metal-supported solid oxide fuel cells with symmetric architecture, having metal supports on both sides of the cell, are scaled up from button cell size to large 50~cm2 active area cell size. The cells remain flat after sintering assisted by the symmetric structure. Equivalent performance is achieved for button cells and large cells, and thermal cycling and redox cycling tolerance are demonstrated for the large cells. The catalyst infiltration process is improved to enable high-throughput manufacturing. The cumbersome lab-scale molten nitrate infiltration process is replaced with a room-temperature process in which a shelf-stable aqueous solution of nitrate salts is applied to the cell by spraying, painting, or other scalable techniques. A fast-ramp thermal conversion of the nitrate salts to the final oxide catalyst composition is implemented, allowing many infiltration cycles to be accomplished in a single work shift. Increasing the number of infiltration cycles from 5 to 10 led to an increase in peak power density from approximately 0.3 to 0.52~W~cm-2.},
	keywords = {infiltration, Metal-supported, Scale up, SOFC},
	issn = {0378-7753},
	doi = {https://doi.org/10.1016/j.jpowsour.2020.229439},
	url = {https://www.sciencedirect.com/science/article/pii/S0378775320317225},
	author = {Emir Dogdibegovic and Yuan Cheng and Fengyu Shen and Ruofan Wang and Boxun Hu and Michael C. Tucker}
}
@article {1122,
	title = {Improved Performance and Efficiency of Lanthanum{\textendash}Strontium{\textendash}Manganese Perovskites Undergoing Isothermal Redox Cycling under Controlled pH2O/pH2},
	journal = {Energy \& Fuels},
	volume = {34},
	year = {2020},
	pages = {16918-16926},
	keywords = {Experimental, Isothermal cycling, Perovskites},
	doi = {https://doi.org/10.1021/acs.energyfuels.0c02872},
	author = {K. Lee and D. C. McCord and R. J. Carrillo and B. Guyll and J. R. Scheffe}
}
@article {1128,
	title = {Oxidation Kinetics of Hercynite Spinels for Solar Thermochemical Fuel Production},
	journal = {Chemical Engineering Journal},
	volume = {401},
	year = {2020},
	keywords = {Hercynite, In situ XPS, Reaction kinetics, Solar thermal, Thermochemical analysis},
	doi = {https://doi.org/10.1016/j.cej.2020.126015},
	author = {S. L. Millican and I. Androshchuk and J. T. Tran and R. M. Trottier and A. Bayon and Y. Al Salik and H. Idriss and C. B. Musgrave and A. W. Weimer}
}
@article {1175,
	title = {On the role of the zirconia/ceria interface in the degradation of solid oxide electrolysis cells},
	journal = {Applied Physics Letters},
	volume = {117},
	year = {2020},
	pages = {123906},
	keywords = {INL; o-SOEC},
	doi = {10.1063/5.0016478},
	url = {https://doi.org/10.1063/5.0016478},
	author = {Zhang,Qian and Park,Beom-Kyeong and Barnett,Scott and Voorhees,Peter}
}
@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}
}
@article {1185,
	title = {Ferritic stainless steel interconnects for protonic ceramic electrochemical cell stacks: Oxidation behavior and protective coatings},
	journal = {International Journal of Hydrogen Energy},
	volume = {44},
	year = {2019},
	pages = {25297-25309},
	abstract = {Protonic ceramic fuel or electrolysis cells (PCFC/PCEC) have shown promising performance at intermediate temperatures. However, these technologies have not yet been demonstrated in a stack, hence the oxidation behavior of the metallic interconnect under relevant operating environments is unknown. In this work, ferritic stainless steels 430 SS, 441 SS, and Crofer 22 APU were investigated for their use as interconnect materials in the PCFC/PCEC stack. The bare metal sheets were exposed to a humidified air environment in the temperature range from 450~{\textdegree}C to 650~{\textdegree}C, to simulate their application in a PCFC cathode or PCEC anode. Breakaway oxidation with rapid weight gain and Fe outward diffusion/oxidation was observed on all the selected stainless steel materials. A protective coating is deemed necessary to prevent the metallic interconnect from oxidizing. To mitigate the observed breakaway oxidation, state-of-the-art protective coatings, Y2O3, Ce0.02Mn1.49Co1.49O4, CuMn1.8O4 and Ce/Co, were applied to the stainless steel sheets and their oxidation resistance was investigated. Dual atmosphere testing further validated the effectiveness of the protective coatings in realistic PCFC/PCEC environments, with a hydrogen gradient across the interconnect. Several combinations of metal and coating material were found to be viable for use as the interconnect for PCFC/PCEC stacks.},
	keywords = {Dual atmosphere, Interconnect oxidation, Oxidation, Protective coatings, Protonic ceramic electrolysis cell, Protonic ceramic fuel cell},
	issn = {0360-3199},
	doi = {https://doi.org/10.1016/j.ijhydene.2019.08.041},
	url = {https://www.sciencedirect.com/science/article/pii/S0360319919329581},
	author = {Ruofan Wang and Zhihao Sun and Jung-Pyung Choi and Soumendra N. Basu and Jeffry W. Stevenson and Michael C. Tucker}
}
@article {1186,
	title = {High performance III-V photoelectrodes for solar water splitting via synergistically tailored structure and stoichiometry},
	journal = {Nature Communications},
	volume = {10},
	year = {2019},
	pages = {3388},
	keywords = {Ammonium sulfide surface passivation, Antireflection, Density graded surface, GaInP2, III-V, PEC, Photocathode},
	doi = {10.1038/s41467-019-11351-1},
	author = {Lim, Haneol and Young, James L. and Geisz, John F. and Friedman, Daniel J. and Deutsch, Todd G. and Yoon, Jongseung}
}
@article {1187,
	title = {Interfacial engineering of gallium indium phosphide photoelectrodes for hydrogen evolution with precious metal and non-precious metal based catalysts},
	journal = {Journal of Materials Chemistry A},
	volume = {7},
	year = {2019},
	pages = {16821-16832},
	abstract = {Gallium indium phosphide (GaInP2) is a semiconductor with promising optical and electronic properties to serve as the large bandgap, top junction in a dual absorber tandem solar water splitting device. Poor intrinsic catalytic ability and surface corrosion in aqueous electrolyte remain key obstacles. Significant progress has been made developing thin-film protection layers and active catalysts for photoelectrochemical devices, but combining these into a catalytic protection layer that can provide long-term stability without sacrificing performance has proven difficult due, in large part, to challenges in developing active and stable interfaces. In this work, we demonstrate that a nanoscale molybdenum disulfide (MoS2) film functions both as an effective protection layer and excellent hydrogen evolution catalyst for GaInP2 photocathodes, with only a \~{}10\% loss in initial light-limited current density after 100 h, and a photocurrent onset potential better than that of the same state-of-the-art device with a platinum{\textendash}ruthenium catalyst. Using transient photoreflectance spectroscopy, we probed the carrier dynamics of these photocathodes and show that the MoS2 coated device exhibits improved electron transfer at the surface interface compared to the PtRu catalyzed device. These MoS2 protected devices are among the most active and stable single-absorber photocathodes for solar water splitting to date and offer a promising pathway towards generating hydrogen with high efficiency and significant longevity.},
	keywords = {durability, GaInP2, III-V, MoS2 hydrogen evolution catalyst, MoS2 protective coating, PEC, Photocathode},
	doi = {10.1039/C9TA05247J},
	url = {http://dx.doi.org/10.1039/C9TA05247J},
	author = {Britto, Reuben J. and Young, James L. and Yang, Ye and Steiner, Myles A. and LaFehr, David T. and Friedman, Daniel J. and Beard, Mathew and Deutsch, Todd G. and Jaramillo, Thomas F.}
}
@article {1189,
	title = {Metal-Supported Solid Oxide Electrolysis Cell with Significantly Enhanced Catalysis},
	journal = {Energy Technology},
	volume = {7},
	year = {2019},
	pages = {1801154},
	abstract = {High-temperature electrolysis (HTE) using solid oxide electrolysis cells (SOECs) is a promising hydrogen production technology and has attracted substantial research attention over the last decade. While most studies are conducted on hydrogen electrode-supported type cells, SOEC operation using metal-supported cells has received minimal attention. The development of metal-supported SOECs with performance similar to the best conventional SOECs is reported. These cells have stainless steel supports on both sides, 10Sc1CeSZ electrolyte and electrode backbones, and nano-structured catalysts infiltrated on both hydrogen and oxygen electrode sides. Samarium-doped ceria (SDC) mixed with Ni is infiltrated as a hydrogen electrode catalyst, and the effect of ceria:Ni ratio is studied. On the oxygen electrode side, catalysts including lanthanum strontium manganite (LSM), lanthanum strontium cobalt ferrite (LSCF), praseodymium oxide (Pr6O11), and their composite catalysts with SDC (i.e., LSM-SDC, LSCF-SDC, and Pr6O11-SDC) are compared. Using the materials with highest catalytic activity (Pr6O11-SDC and SDC40-Ni60) and optimizing the catalyst infiltration processes, excellent electrolysis performance of metal-supported cells is achieved. Current densities of -5.31, -4.09, -2.64, and -1.62 A cm-2 are achieved at 1.3 V and 50 vol\% steam content at 800, 750, 700, and 650 {\textdegree}C, respectively.},
	keywords = {high-temperature steam electrolysis, Hydrogen production, infiltration, solid oxide electrolysis, solid oxide electrolyzer cells},
	doi = {https://doi.org/10.1002/ente.201801154},
	url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/ente.201801154},
	author = {Wang, Ruofan and Dogdibegovic, Emir and Lau, Grace Y. and Tucker, Michael C.}
}
@article {1192,
	title = {Stable Unassisted Solar Water Splitting on Semiconductor Photocathodes Protected by Multifunctional GaN Nanostructures},
	journal = {ACS Energy Letters},
	volume = {4},
	year = {2019},
	pages = {1541-1548},
	keywords = {durability, GaAs, GaInP2, GaN nanowires, Ge, III-V, PEC, Photocathode, Unbiased water splitting},
	doi = {10.1021/acsenergylett.9b00549},
	url = {https://doi.org/10.1021/acsenergylett.9b00549},
	author = {Wang, Yongjie and Schwartz, Jonathan and Gim, Jiseok and Hovden, Robert and Mi, Zetian}
}
