Mechanisms of chromium poisoning in solid oxide cell air electrodes and research advances in enhancing chromium-resistivity
Solid oxide cells(SOCs)have advantages of high energy utilization,low pollution emissions,and high fuel flexibility,and will play a key role in future energy supply and storage.At present,the main bottleneck restricting the large-scale commercial application of SOC is the long-term stability that needs to be improved.The chromium poisoning of SOC air electrode caused by the metallic interconnect used for serial connection of cells is one of the key issues.The chromium poisoning mechanism in traditional air electrodes operating in power generation mode(SOFC)is relatively well understood.However,with the increasing application demand of SOC in electrolytic mode(SOEC),the mechanism of chromium poisoning in SOEC mode needs to be explored urgently.In this paper,the mechanisms of chromium poisoning for typical SOC air electrodes in both SOFC and SOEC mode are reviewed.Additionally,it summarizes and prospects the research on improving the resistance of SOC air electrodes to chromium poisoning.
国家科技期刊平台
NSTL
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