Self-sustainable protonic ceramic electrochemical cells using a triple conducting electrode for hydrogen and power production
- PMID: 32312963
- PMCID: PMC7171140
- DOI: 10.1038/s41467-020-15677-z
Self-sustainable protonic ceramic electrochemical cells using a triple conducting electrode for hydrogen and power production
Abstract
The protonic ceramic electrochemical cell (PCEC) is an emerging and attractive technology that converts energy between power and hydrogen using solid oxide proton conductors at intermediate temperatures. To achieve efficient electrochemical hydrogen and power production with stable operation, highly robust and durable electrodes are urgently desired to facilitate water oxidation and oxygen reduction reactions, which are the critical steps for both electrolysis and fuel cell operation, especially at reduced temperatures. In this study, a triple conducting oxide of PrNi0.5Co0.5O3-δ perovskite is developed as an oxygen electrode, presenting superior electrochemical performance at 400~600 °C. More importantly, the self-sustainable and reversible operation is successfully demonstrated by converting the generated hydrogen in electrolysis mode to electricity without any hydrogen addition. The excellent electrocatalytic activity is attributed to the considerable proton conduction, as confirmed by hydrogen permeation experiment, remarkable hydration behavior and computations.
Conflict of interest statement
The authors declare no competing interests.
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References
-
- Mermelstein J, Posdziech O. Development and demonstration of a novel reversible SOFC system for utility and micro grid energy storage. Fuel Cells. 2017;17:562–570. doi: 10.1002/fuce.201600185. - DOI
-
- Ruiz-Morales JC, Marrero-López D, Canales-Vázquez J, Irvine JTS. Symmetric and reversible solid oxide fuel cells. RSC Adv. 2011;1:1403–1414. doi: 10.1039/c1ra00284h. - DOI
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