Experimental study on enhancing the fuel efficiency of an anodic dead-end mode polymer electrolyte membrane fuel cell by oscillating the hydrogen

被引：73

作者：

Choi, Jong Won ^{[1
]}

Hwang, Yong-Sheen ^{[1
]}

Cha, Suk Won ^{[1
]}

Kim, Min Soo ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Mech & Aerosp Engn, Seoul 151744, South Korea

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 22期

关键词：

Polymer electrolyte membrane fuel cell; Anodic dead end; Purge interval; Oscillation; Effective diffusivity; PIPE-FLOW; PEMFC; BEHAVIOR; CATHODE;

D O I：

10.1016/j.ijhydene.2010.08.076

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：

This paper investigates how to improve the fuel efficiency of an anodic dead end mode fuel cell for portable power generation Generally, a periodic purge process in anodic dead end operation is required to avoid anode flooding caused by back diffusive water from the cathode However during the purge process small amounts of the hydrogen are discharged with the water lowering the fuel utilization efficiency Therefore hydrogen pulsations are introduced and experimental attempt to minimize the purge frequency is conducted in this study The experimental results indicate that pulsation reduces partial pressure of the water vapor in the anode channel, increasing the interval between purges by approximately three times thus improving overall efficiency (C) 2010 Professor T Nejat Veziroglu Published by Elsevier Ltd All rights reserved

引用

页码：12469 / 12479

页数：11

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