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DOE OSTI · 2530575

Efficient Reversible Operation and Stability of Novel Solid Oxide Cells

Barnett, Scott·Braun, Robert
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Abstract

This project aims to develop and test novel Reversible Solid Oxide Cells (ReSOCs) specifically designed to yield low area specific resistance, as required to achieve high round trip efficiency in reversible operation at high current density. A key objective is to improve long-term reversible SOC durability; mechanistic degradation models will be used to predict long-term durability using input data from accelerated testing that combines electrochemical life testing with quantitative microstructural and chemical evaluation. The modeling tasks seek to design low-loss, low-cost ReSOC systems using input data from the experimental cell studies. A key challenge is to develop a thermal management strategy that maintains thermally self-sustaining operation while operating the stack at a potential lower than the thermo-neutral steam electrolysis voltage of ~1.3 V, to maintain high efficiency.

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08 HYDROGEN25 ENERGY STORAGE36 MATERIALS SCIENCEReversible solid oxide cell Hydrogen

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Barnett, Scott, Braun, Robert. 2023-04-30. Efficient Reversible Operation and Stability of Novel Solid Oxide Cells. https://doi.org/10.2172/2530575

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