质子交换膜燃料电池
阳极
铂金
降级(电信)
循环伏安法
阴极
材料科学
电极
透射电子显微镜
电化学
分析化学(期刊)
膜
催化作用
化学工程
化学
色谱法
纳米技术
电子工程
物理化学
工程类
生物化学
作者
Atsushi Taniguchi,Tomoki Akita,Kazuaki Yasuda,Yoshinori Miyazaki
标识
DOI:10.1016/j.ijhydene.2008.02.049
摘要
The damage caused by cell reversal during proton exchange membrane fuel cells (PEMFCs) operation with air starvation was investigated by a single-cell experiment. Samples from degraded membrane–electrode assemblies (MEAs) were characterized. The loss of electrochemical surface area of the cathode platinum was detected by in situ cyclic voltammetry, and platinum sintering was detected by transmission electron microscopy (TEM) analysis. Degradation at the anode was not detected in the chemical analysis of the anode catalyst layer of MEA samples by energy dispersive X-ray analysis (EDX) and TEM. An obvious decrease in the performance of PEMFC was observed in a sample degraded by cell reversal for 120 min.
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