Water management characteristics of electrospun micro-porous layer in PEMFC under normal temperature and cold start conditions

被引：44

作者：

Li, Chaoming ^{[1
]}

Si, Dechun ^{[2
]}

Liu, Yadi ^{[3
]}

Zhang, Jianbo ^{[2
,4
]}

Liu, Yong ^{[5
]}

机构：

[1] Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing 100029, Peoples R China

[2] Tsinghua Univ, Dept Automot Engn, State Key Lab Automot Safety & Energy, Beijing 100084, Peoples R China

[3] Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing 100083, Peoples R China

[4] Beijing Inst Technol, Beijing Coinnovat Ctr Elect Vehicles, Beijing 100081, Peoples R China

[5] Beijing Univ Chem Technol, Coll Mat Sci & Engn, Beijing 100029, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2021年 / 46卷 / 19期

基金：

中国国家自然科学基金;

关键词：

Micro-porous layer; Proton exchange membrane fuel cell; Electrospinning; Water management; Cold start; Non-toxic;

D O I：

10.1016/j.ijhydene.2020.05.271

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：

Micro-porous layer (MPL) is the key component in proton exchange membrane fuel cell for water management. Electrospinning technique, providing a novel nanofiber structure, is recently used to fabricate MPL which gave improved fuel cell performance at normal temperature operation. However, underlying causes are not well understood, and no attempt has been made to study its effects on the cold start performance. In this work, electrospun MPL using non-toxic solvent was fabricated, and water management charac-teristics under both normal temperature and cold start conditions were compared with commercial MPL using the same catalyst coated membrane (CCM). Electrospun MPL out-performed the commercial MPL at 70 degrees C under high relative humilities due to marked reduction in mass transport losses. Under cold start conditions, fuel cell with electrospun MPL generated electricity for a longer time, possibly due to better interfacial connection, which facilitated water removal from catalyst layer. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：11150 / 11159

页数：10

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