Mathematical modeling of a passive-feed DMFC with heat transfer effect

被引：132

作者：

Chen, R ^{[1
]}

Zhao, TS ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2005年 / 152卷 / 01期

关键词：

fuel cell; passive DMFC; heat and mass transfer; thermal effect; thermal management;

D O I：

10.1016/j.jpowsour.2005.02.088

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：

A passive liquid-feed direct methanol fuel cell (DNWC) with neither external liquid pumps nor gas blowers is modeled mathematically. A one-dimensional model is developed by considering inherently coupled heat and mass transport, along with the electrochemical reactions occurring in passive DMFCs. The analytical solutions predicting the performance of this type of fuel cell operating with different methanol concentrations are obtained. It is shown that the performance of passive DMFCs increases with methanol concentration. It is further revealed that the improved performance with higher methanol concentrations is due primarily to the increased operating temperature resulted from the exothermic reaction between permeated methanol and oxygen on the cathode. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：122 / 130

页数：9

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