Behavior of water below the freezing point in PEFCs

被引：108

作者：

Ishikawa, Y.

Morita, T.

Nakata, K.

Yoshida, K.

Shiozawa, M.

机构：

[1] Nippon Soken Inc, Nishio, Aichi 4450012, Japan

[2] Toyota Motor Co Ltd, Toyota, Aichi 4718572, Japan

来源：

JOURNAL OF POWER SOURCES | 2007年 / 163卷 / 02期

关键词：

PEM; fuel cell; freezing point; ice; super-cool;

D O I：

10.1016/j.jpowsour.2006.08.026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This study investigates the phenomenon of water freezing below the freezing point in polymer electrolyte fuel cell (PEFCs). Water generated on the surface of the catalyst layer was observed simultaneously with visible and infrared images. Surprisingly, it was found that water generated below the freezing point is in the liquid state and that the temperature rises to VC at the time of freezing. It is generally known that heat of solidification is radiated when water in a super-cooled state starts to freeze. This study shows that water generated below the freezing point in polymer electrolyte fuel cells (PEFCs) is in a super-cooled state. (c) 2006 Published by Elsevier B.V.

引用

页码：708 / 712

页数：5

共 13 条

[1]

Geiger AB, 2003, FUEL CELLS, V2, P92

[2] In situ diagnostic of two-phase flow phenomena in polymer electrolyte fuel cells by neutron imaging Part A. Experimental, data treatment, and quantification [J].