Investigation of the effect of micro-porous layer on PEM fuel cell cold start operation

被引：80

作者：

Xie, Xu ^{[1
]}

Wang, Renfang ^{[1
,2
]}

Jiao, Kui ^{[1
]}

Zhang, Guobin ^{[1
]}

Zhou, Jiaxun ^{[1
]}

Du, Qing ^{[1
]}

机构：

[1] Tianjin Univ, State Key Lab Engines, 135 Yaguan Rd, Tianjin 300350, Peoples R China

[2] Sunrise Power Co Ltd, 907 Huangpu Rd, Dalian 116085, Peoples R China

来源：

RENEWABLE ENERGY | 2018年 / 117卷

基金：

中国国家自然科学基金;

关键词：

PEM fuel cell; Micro-porous layer; Cold start; Ice formation; Voltage reversal; GAS-DIFFUSION LAYERS; THERMAL-CONDUCTIVITY; INTERNAL BEHAVIOR; WATER MANAGEMENT; CATALYST LAYER; PERFORMANCE; TEMPERATURE; TRANSPORT; SIMULATIONS; TECHNOLOGY;

D O I：

10.1016/j.renene.2017.10.039

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effect of micro-porous layer (MPL) on proton exchange membrane (PEM) fuel cell cold start is investigated experimentally with theoretical analysis. Under normal condition, the anode and cathode MPLs can improve the independency on inlet gas humidification on the corresponding side. For potentiostatic startup, the humidity independence enhanced by anode MPL improves the cell performance at around -7 degrees C. Cathode MPL can promote the water back diffusion and hinder the ice formation on the catalyst layer (CL) surface at low temperature (e.g. -10 degrees C). Besides, anode MPL also contributes to reducing the blockage tendency at very low temperature (e.g. -15 degrees C or lower). For galvanostatic startup, water electrolysis and carbon corrosion may occur which leads to the voltage reversal when the cell cannot achieve the desired current density, which may produce more waste heat. Low water content will aggravate the voltage reversal and carbon corrosion. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：125 / 134

页数：10

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