Solid oxide electrolyte materials for electrochemical cells
AssigneesNorthwestern University, University of Maryland, College Park
InventorsSossina M. Haile, Sihyuk Choi, Christopher James Kucharczyk, Yangang Liang, Xiaohang Zhang, Ichiro Takeuchi
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Abstract
Materials for electrochemical cells are provided. BaZr?0.4#191Ce?0.4#191M?0.2#1910?3#191 compounds, where M represents one or more rare earth elements, are provided for use as electrolytes. PrBa?0.5#191Sr?0.5#191Co?2-x#191Fe?x#191O?5+#1916 is provided for use as a cathode. Also provided are electrochemical cells, such as protonic ceramic fuel cells, incorporating the compounds as electrolytes and cathodes.
Claims17
A compound having the formula BaZr0.4Ce0.4M0.2O3, where M represents one or more rare earth elements.
A cell comprising:
- a cathode, an anode, and a solid oxide electrolyte between the anode and the cathode, the solid oxide electrolyte comprising a compound having the formula BaZr0.4Ce0.4M0.2O3, where M represents one or more rare earth elements.
A cell comprising:
- a cathode, an anode, and a solid electrolyte between the anode and the cathode, the cathode comprising PrBa0.5Sr0.5Co2−xFexO5+δ, where 0.4≤x≤2.
A method of forming a bilayer cathode, the method comprising:
- forming an interlayer of a cathode material on a solid electrolyte;
- and
- forming an overlayer of the cathode material on the interlayer, wherein the overlayer has a higher porosity than the interlayer.
Dependencies are inferred from the claim text.