D204 固体高分子形燃料電池の氷点下起動影響と電池内凍結現象の観察(OS4 水素・燃料電池),動力エネルギーシステム部門20周年,次の20年への新展開)

概要

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In PEM Fuel Cell below zero, freezing under cold start sometimes causes a temporal deterioration of cell performance in normal temperature operation. This paper investigates the mechanisms of the cold start effect on operation at normal temperature and the ice fomation in catalyst layer. The observation was performed after the cell at the freezing temperature. The results showed that the performance deterioration is caused by the ice formed at the interface between the catalyst layer and GDL, and the control of the ice amount is important to prevent depression. Cryo-SEM observation showed that there is ice in the catalyst layer, which causes the shut down, and the distribution of formed ice is affected by the operation condition.
2010-06-20