期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 35, 期 13, 页码 6887-6896出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2010.04.027
关键词
Fuel cell; Polymer electrolyte membrane; Flow field; Water management; Flow channel; Slanted channel; Back diffusion
资金
- Kasetsart University Research and Development Institute (KURDI)
- center of Excellence for Petroleum, Petrochemicals, and Advanced Materials
- S&T Postgraduate Education Research Development Office (PERDO)
- KU Faculty of Engineering
- University of Waterloo Green Energy and Fuel Cell Research Group
This work designed and tested innovative flow channels in order to improve water management in a polymer electrolyte membrane fuel cell (PEMFC). The design employed slanted channels with an angle of 20 degrees in a flow plate to collect the liquid water that permeated from the gas diffusion layers. The effects of orientations of the slanted channels in up-slanted and down-slanted directions and relative humidity levels on the cell performance were investigated. The experimental results showed that modifying the anode flow field using down-slanted channels provided higher cell performance. Water concentration at the gas diffusion layer is reduced resulting in more back diffusion of water from the cathode to anode, thus inducing membrane hydration and improving the conductivity. Promotion of water removal by applying down-slanted channels in the cathode side did not improve the performance. This work has demonstrated that channel cross-section design alone could improve the PEM fuel cell performance. The anode down-slanted cell indeed improved the performances at extremely wet condition and the power was equally good as that without modified flow channel at less wet condition. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据