Power loss and its effect on fuel cell performance

被引：19

作者：

Shen, M ^{[1
]}

Scott, K ^{[1
]}

机构：

[1] Univ Newcastle Upon Tyne, Sch Chem Engn & Adv Mat, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

JOURNAL OF POWER SOURCES | 2005年 / 148卷

基金：

英国工程与自然科学研究理事会;

关键词：

fuel cell; power loss; crossover; leak resistance; membrane; DMFC;

D O I：

10.1016/j.jpowsour.2005.01.037

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：

Fuel cell performance and the power are influenced by factors referred to as "power loss". In fuel cells, there are two kinds of power losses: one is dominated by the electric resistance between the electrodes, which is called as leak resistance, and the other is dominated by mass diffusion between the anode and cathode, i.e. "crossover". In this work, we analyse the two kinds of power losses and discuss how they influence fuel cell performance. The power loss of a fuel cell caused by crossover is described by a new parameter P-leak. The practical performance curve of direct methanol fuel cells using different types of membrane materials are modelled by a mathematical equation describing the power loss and crossover effect. This equation is used to estimate the methanol crossover flux. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：24 / 31

页数：8

共 20 条

[1] Investigation of grafted ETFE-based polymer membranes as alternative electrolyte for direct methanol fuel cells [J].