Catastrophic Degradation in Solid Oxide Fuel Cells Caused by Air Supply Interruption in Real-World Operations: Fundamental Mechanisms and Mitigation Strategies.

ABSTRACT: With the rapid market expansion of solid oxide fuel cells (SOFCs), real-world operational incidents have unveiled various critical challenges. Malfunction of the gas supply system is among the most frequent and critical issues, severely damaging cells and stacks. However, the actual cause of this degradation remains completely unknown; existing explanations have been mostly speculative, and simple engineering-based solutions have proven ineffective. The study reveals that air supply interruption induces irreversible chemical degradation of perovskite-based electrode materials. Upon air stoppage, the continued electric current rapidly depletes oxygen, decreasing the oxygen partial pressure below the stability threshold of the state-of-the-art (La,Sr)CoO_3-δ cathode. This triggers

SUBMITTER: Seo H 

PROVIDER: S-EPMC12806198 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature