G115 氷点下起動時におけるPEFC内凍結現象が常温復帰運転に及ぼす影響(OS5 水素・燃料電池)

概要

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In PEM fuel cell below zero, freezing under the cold start sometimes causes a deterioration of cell performance in normal operation. In particular, this phenomenon is especially prominent after the -10℃ start than after the -20℃ that. This is because the ice formed at the interface between the cathode catalyst layer and GDL at the -10℃ start. This paper focused on the effect of current density and tightening pressure of the cell, and investigated the mechanism of the -10℃ start effect on normal operation. The results showed that the performance deterioration is large as current density at the -10℃ start is small. This phenomenon became prominent in case of small tightening pressure of the cell because of wide ice formation on the catalyst layer surface.
一般社団法人日本機械学会の論文
2011-06-22