Operando EPR Study of Radical Formation in Anion-Exchange Membrane Fuel Cells
Meeting abstracts/Meeting abstracts (Electrochemical Society CD-ROM)(2022)
摘要
The alkaline operating environment of anion-exchange membrane (AEM) fuel cells (AEMFCs) makes it possible to employ a wide variety of catalysts, including platinum group metals (PGMs) as well as PGM-free materials. However, little is understood about radical formation during AEMFC operation with different catalysts and their implications. In this investigation, we utilized spin-trapping and electron-paramagnetic resonance measurements to measure and identify the radicals produced on selected PGM and PGM-free oxygen-reduction reaction catalysts. To the best of our knowledge, this is an original study exploring radical formation on different classes of catalysts in operando AEMFCs. This work highlights an unexplored radical degradation mechanism in AEMFCs and calls for innovative strategies in designing radical attack-resistant AEMs.
更多查看译文
关键词
Anion-Exchange Membrane Fuel Cells (AEMFC),EPR spin trapping,radical reactions,radical-induced degradation,oxygen reduction reaction (ORR)
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要