Analysis of degradation in PEMFC caused by cell reversal during air starvation
Analysis of degradation in PEMFC caused by cell reversal during air starvation
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DOI：
10.1016/j.ijhydene.2008.02.049
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发表时间：
2008-05
影响因子：
7.2
通讯作者：
A. Taniguchi;T. Akita;K. Yasuda;Y. Miyazaki
中科院分区：
文献类型：
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作者：
A. Taniguchi;T. Akita;K. Yasuda;Y. Miyazaki
通过单细胞实验研究了质子交换膜燃料电池（pemfc）在缺氧条件下运行过程中细胞反转对电池的损伤。对降解膜电极组件（MEAs）样品进行了表征。采用原位循环伏安法检测阴极铂的电化学表面积损失，透射电镜（TEM）分析检测铂的烧结情况。能谱x射线分析（EDX）和透射电镜（TEM）对MEA样品的阳极催化剂层进行化学分析，未发现阳极降解现象。在经过120分钟细胞逆转降解的样品中，观察到PEMFC的性能明显下降。
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 120min.