Heterogeneous Aging Within PEMFC Stacks
作者： Y. Chatillon , C. Bonnet , F. Lapicque
关键词:
摘要: Evaluation of PEM fuel cell aging occurring in various operating conditions is usually conducted single configuration for which electrochemical methods can be used. Aging phenomena stack often investigated either a global manner or by basic measurements variables, e. g. individual voltages. This paper presents the results investigation three-cell stacks using crossed linked giving access to time variations ohmic and charge transfer resistance three cathodes, as well surface area crossover over more than 1,000 h at 0.3 A cm(-2) upon air humidification. Consistency between employed was discussed demonstrated. In addition case formed sane cells, comprising defective - previously aged under oxidative placed two MEAs investigated: pre-ageing this shown slightly accelerate long-term operation. Besides, it observed that both stacks, back i.e. located far from inlet outlet suffered much run other cells.
univ-lorraine.fr
sci-hub.se 参考文章(16)
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