Observation of dynamic liquid water transport in the microporous layer and gas diffusion layer of an operating PEM fuel cell by high-resolution soft X-ray radiography

被引：104

作者：

Deevanhxay, Phengxay ^{[1
]}

Sasabe, Takashi ^{[2
]}

Tsushima, Shohji ^{[1
]}

Hirai, Shuichiro ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Mech & Control Engn, Meguro Ku, Tokyo 1528552, Japan

[2] Tohoku Univ, Inst Fluid Sci, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF POWER SOURCES | 2013年 / 230卷

关键词：

PEMFC; Soft X-ray radiography; In-situ visualization; Liquid water transport; Microporous layer; Gas diffusion layer; MICRO-POROUS LAYER; NEUTRON-RADIOGRAPHY; BEHAVIOR; VISUALIZATION; PERFORMANCE; CRACKS; PEFC; MPL;

D O I：

10.1016/j.jpowsour.2012.11.140

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

In-situ observation of liquid water transport in the microporous layer (MPL) and gas diffusion layer (GDL) of an operating proton exchange membrane fuel cell (PEMFC) was performed using high-resolution soft X-ray radiography. The amount of liquid water accumulated in the MPL and GDL increases with increasing in current density. The amount of liquid water in the MPL is low near the catalyst layer and higher toward the GDL side. The liquid water is transported to the GDL mainly through the cracks in the MPL The dynamic liquid water transport from the cracks in the MPL to the interconnected pores in the GDL was observed. (C) 2012 Elsevier B.V. All rights reserved.

引用

收藏

页码：38 / 43

页数：6

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