In-situ visualization of liquid water in an operating PEMFC by soft X-ray radiography

被引：124
|
作者：
Sasabe, Takashi [1 ]
Tsushima, Shohji [1 ]
Hirai, Shuichiro [1 ]
机构：
[1] Tokyo Inst Technol, Res Ctr Carbon Recycling & Energy, Meguro Ku, Tokyo 1528552, Japan
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 20期
关键词：
Soft X-ray radiography; In-situ visualization; Real-time imaging; Laboratory-based equipment; Liquid water transport; PEMFC; GAS-DIFFUSION LAYER; FUEL-CELLS; TRANSPORT; MEMBRANE; WETTABILITY; REMOVAL; CATHODE; IMPACT;
D O I：
10.1016/j.ijhydene.2010.06.050
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：
In order to visualize the liquid water in a PEMFC, in-situ soft X-ray radiography technique has developed. Low energy X-ray in soft X-ray range makes it possible to visualize the liquid water in a PEMFC. The temporal and spatial resolution of the technique were improved and the real-time imaging was realized. Through-plane and in-plane visualization tests of an operating PEMFC were carried out. The results of through-plane visualization tests showed a strong separation of the liquid water between the under rib area and the under channel area, and non-uniform distribution of liquid water with the range of several dozens to hundreds of mu m was observed. In addition, the liquid water discharge behavior near under the rib area was observed by an in-plane visualization test. These results suggested the importance of a detailed understanding of the liquid water transport processes inside the PEMFC, and the soft X-ray radiography makes this investigation possible. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：11119 / 11128
页数：10
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