Time Evolution of Local Potentials During PEM Fuel Cell Operation With Dead-Ended Anode
Time Evolution of Local Potentials During PEM Fuel Cell Operation With Dead-Ended Anode
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DOI：
10.1149/05801.1631ecst
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发表时间：
2013-08
期刊：
影响因子：
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通讯作者：
Sofyane Abbou;J. Dillet;D. Spernjak;R. Mukundan;J. Fairweather;R. Borup;G. Maranzana;S. Didierjean;O. Lottin
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文献类型：
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作者：
Sofyane Abbou;J. Dillet;D. Spernjak;R. Mukundan;J. Fairweather;R. Borup;G. Maranzana;S. Didierjean;O. Lottin
我们目前的实验结果与参考电极沿沿着气体通道，用于记录当地的阳极和阴极电位的2D分段电池。老化协议组成的重复死端操作序列进行评估氢饥饿对本地燃料电池性能的影响。我们观察到强烈的局部阴极电位偏移，以及不均匀的ECSA损失和性能下降沿着电池面积。在遭受燃料饥饿时间最长的区域中，即靠近阳极室出口的区域，损害更加明显。
We present experimental results obtained with a 2D segmented cell with reference electrodes along the gas channels, used to record local anode and cathode potentials. Aging protocols consisting of repeated dead-end operation sequences were performed to assess the impact of hydrogen starvation on the local fuel cell performance. We observed strong local cathode potential excursion, as well as non-uniform ECSA losses and performance degradation along the cell area. The damage was more pronounced in the regions suffering the longest from fuel starvation: i.e. close to the exit of the anode compartment.