A thermodynamic perspective on electrode poisoning in solid oxide fuel cells

Kevin Huang

doi:10.1007/s12613-023-2783-6

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Kevin Huang, A thermodynamic perspective on electrode poisoning in solid oxide fuel cells, Int. J. Miner. Metall. Mater.,(2024). https://doi.org/10.1007/s12613-023-2783-6

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Kevin Huang, A thermodynamic perspective on electrode poisoning in solid oxide fuel cells, Int. J. Miner. Metall. Mater.,(2024). https://doi.org/10.1007/s12613-023-2783-6

Kevin Huang, A thermodynamic perspective on electrode poisoning in solid oxide fuel cells, Int. J. Miner. Metall. Mater.,(2024). https://doi.org/10.1007/s12613-023-2783-6

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Kevin Huang, A thermodynamic perspective on electrode poisoning in solid oxide fuel cells, Int. J. Miner. Metall. Mater.,(2024). https://doi.org/10.1007/s12613-023-2783-6

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Research ArticleOpen Access

A thermodynamic perspective on electrode poisoning in solid oxide fuel cells

Kevin Huang

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Corresponding author:
Kevin Huang E-mail: huang46@cec.sc.edu
Received: 22 August 2023; Revised: 8 November 2023; Accepted: 9 November 2023; Available online: 10 November 2023

Abstract

Abstract

A critical challenge to the commercialization of clean and high-efficiency solid oxide fuel cell (SOFC) technology is the insufficient stack lifespan caused by a variety of degradation mechanisms, which are associated with cell components and chemical feedstocks. Cell components related degradation refers to thermal/chemical/electrochemical deterioration of cell materials under operating conditions, whereas the latter regards impurities in feedstocks of oxidant (air) and reductant (fuel). This article provides a thermodynamic perspective on the understanding of the impurities-induced degradation mechanisms in SOFCs. The discussion focuses on using thermodynamic analysis to elucidate poisoning mechanisms in cathodes by impurity species such as Cr, CO₂, H₂O, and SO₂ and in the anode by species such as S (or H₂S), SiO₂, and P₂ (or PH₃). The author hopes the presented fundamental insights can provide a theoretical foundation for searching for better technical solutions to address the critical degradation challenges.
- impurities;
- air;
- fuel;
- reaction;
- activity

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