@article {1145,
	title = {Operational Limits of Redox Metal Oxides Performing Thermochemical Water Splitting},
	journal = {Energy Technology},
	volume = {10},
	year = {2022},
	pages = {2100222},
	abstract = {Solar thermochemical hydrogen production is an attractive technology that stores intermittent solar energy in the form of chemical bonds. Efficient operation requires the identification of a redox-active metal oxide (MOx) material that can achieve high conversion of water to hydrogen at minimal energy input. Water splitting occurs by consecutive reduction and reoxidation reactions of MOx. MOx is reduced to MOx-δ and, in the second step, is reoxidized by water recovering the initial MOx and generate H2. The material must reduce at temperatures achievable in concentrated solar receiver/reactors, while maintaining a thermodynamic driving force to split water. At equilibrium, extent of reduction depends on temperature and oxygen partial pressure, and in this analysis, a set of thermodynamic properties, namely, enthalpy and entropy of oxygen vacancy formation, is sufficient to represent MOx. Herein, a method to easily classify materials based on these thermodynamic properties under any condition of oxygen partial pressure and temperature is presented. This method is based on fundamental thermodynamic principles and is applicable for any redox material with known thermodynamic properties. Despite the simplicity of the method, it is believed that this analysis will support future research in targeting thermodynamic properties of redox-active metal oxides.},
	keywords = {Hydrogen production, solar energy, thermochemical cycles, thermodynamic properties, water splitting},
	doi = {https://doi.org/10.1002/ente.202100222},
	url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/ente.202100222},
	author = {Bayon, Alicia and de la Calle, Alberto and Stechel, Ellen B. and Muhich, Christopher}
}
@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 {1166,
	title = {The oxygen partial pressure in solid oxide electrolysis cells with multilayer electrolytes},
	journal = {Acta Materialia},
	volume = {213},
	year = {2021},
	pages = {116928},
	abstract = {A number of degradation mechanisms have been observed during the long-term operation of solid oxide electrolysis cells (SOEC). Using an electrolyte charge carrier transport model and a diffuse interface treatment for a multilayer electrolytes, we quantify the oxygen potentials across the electrolyte and thereby provide insights into these degradation mechanisms. Our model describes the transport of charge carriers in the electrolyte when the oxygen partial pressure is extremely low by accounting for the spatial variation of the concentration of oxygen vacancies in the electrolyte which is closely related to the degradation of the SOEC near the interface of hydrogen electrode and electrolyte. Moreover, we identify four quantities that characterize the distribution of oxygen partial pressure in the electrolyte, which are directly related to the degradation mechanisms in the electrolyte as well, and give analytical estimates for them. These analytical expressions provide guidance on the parameters that need to be controlled to suppress the degradation observed in the electrolyte.},
	keywords = {Diffuse interface model, Multilayer electrolyte, Oxygen partial pressure, solid oxide electrolysis cell},
	issn = {1359-6454},
	doi = {https://doi.org/10.1016/j.actamat.2021.116928},
	url = {https://www.sciencedirect.com/science/article/pii/S1359645421003086},
	author = {Qian Zhang and Qin-Yuan Liu and Beom-Kyeong Park and Scott Barnett and Peter Voorhees}
}
@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 {957,
	title = {Oxygen nonstoichiometry and thermodynamic characterization of Zr doped ceria in the 1573{\textendash}1773 K temperature range},
	journal = {Phys. Chem. Chem. Phys.},
	volume = {17},
	year = {2015},
	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 = {7813-7822},
	issn = {1463-9076, 1463-9084},
	doi = {10.1039/C4CP04916K},
	url = {http://xlink.rsc.org/?DOI=C4CP04916K},
	author = {M. Takacs and J. R. Scheffe and A. Steinfeld}
}
@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 {908,
	title = {Oxygen Transport and Isotopic Exchange in Iron Oxide/YSZ Thermochemically-active Materials via Splitting of C(<sup>18</sup>O)<sub>2</sub> 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 {772,
	title = {Observation of orbital ordering and Jahn-Teller distortions supporting the Wigner-crystal model in highly doped Bi 1 - x Ca x Mn O 3},
	journal = {Physical Review B},
	volume = {75},
	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 = {1098-0121, 1550-235X},
	doi = {10.1103/PhysRevB.75.085101},
	url = {https://link.aps.org/doi/10.1103/PhysRevB.75.085101},
	author = {S. Grenier and V. Kiryukhin and S-W. Cheong and B. G. Kim and J. P. Hill and K. J. Thomas and J. M. Tonnerre and Y. Joly and U. Staub and V. Scagnoli}
}
@article {863,
	title = {Origin and Tunability of Unusually Large Surface Capacitance in Doped Cerium Oxide Studied by Ambient-Pressure X-Ray Photoelectron Spectroscopy},
	journal = {Advanced Materials},
	volume = {28},
	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 = {4692-4697},
	issn = {09359648},
	doi = {10.1002/adma.201506333},
	url = {http://doi.wiley.com/10.1002/adma.201506333},
	author = {Chirranjeevi Balaji Gopal and Farid El Gabaly and Anthony H. McDaniel and William C. Chueh}
}
@article {967,
	title = {Oxidation and reduction reaction kinetics of mixed cerium zirconium oxides},
	journal = {The Journal of Physical Chemistry C},
	volume = {120},
	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 = {2027-2035},
	issn = {1932-7447, 1932-7455},
	doi = {10.1021/acs.jpcc.5b08729},
	url = {http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.5b08729},
	author = {B. Bulfin and F. Call and J. Vieten and M. Roeb and C. Sattler and I. V. Shvets}
}
@article {897,
	title = {Oxidation reaction kinetics for the steam-iron process in support of hydrogen production},
	journal = {International Journal of Hydrogen Energy},
	volume = {36},
	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 = {15125-15135},
	issn = {03603199},
	doi = {10.1016/j.ijhydene.2011.08.074},
	url = {http://linkinghub.elsevier.com/retrieve/pii/S0360319911019951},
	author = {R.C. Stehle and M.M. Bobek and R. Hooper and D.W. Hahn}
}
@article {784,
	title = {Oxidation state and chemical shift investigation in transition metal oxides by EELS},
	journal = {Ultramicroscopy},
	volume = {116},
	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 = {24-33},
	issn = {03043991},
	doi = {10.1016/j.ultramic.2012.03.002},
	url = {http://linkinghub.elsevier.com/retrieve/pii/S0304399112000381},
	author = {Haiyan Tan and Jo Verbeeck and Artem Abakumov and Gustaaf Van Tendeloo}
}
@article {948,
	title = {Oxygen exchange materials for solar thermochemical splitting of H<sub>2</sub>O and CO<sub>2</sub>: A review},
	journal = {Materials Today},
	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 = {13697021},
	doi = {10.1016/j.mattod.2014.04.025},
	url = {http://linkinghub.elsevier.com/retrieve/pii/S1369702114001357},
	author = {Jonathan R. Scheffe and Aldo Steinfeld}
}
@article {976,
	title = {Oxygen nonstoichiometry, defect equilibria, and thermodynamic characterization of LaMnO<sub>3</sub> perovskites with Ca/Sr A-site and Al B-site doping},
	journal = {Acta Materialia},
	volume = {103},
	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 = {700-710},
	issn = {13596454},
	doi = {10.1016/j.actamat.2015.10.026},
	url = {http://linkinghub.elsevier.com/retrieve/pii/S1359645415300264},
	author = {M. Takacs and M. Hoes and M. Caduff and T. Cooper and J.R. Scheffe and A. Steinfeld}
}
