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题名: Characteristics of proton exchange membrane fuel cells cold start with silica in cathode catalyst layers
作者: Miao, Zhili1, 2;  Yu, Hongmei1;  Song, Wei1, 2;  Hao, Lixing1, 2;  Shao, Zhigang1;  Shen, Qiang1, 2;  Hou, Junbo1, 2;  Yi, Baolian1
通讯作者: 俞红梅
关键词: Proton exchange membrane fuel cell ;  Cold start ;  Catalyst layer ;  Nanosized SiO(2)
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2010-06-01
DOI: 10.1016/j.ijhydene.2010.03.045
卷: 35, 期:11, 页:5552-5557
收录类别: SCI
文章类型: Article
部门归属: 3
项目归属: 301
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Energy & Fuels
英文摘要: In this study, a novel strategy is reported to improve the cold start performance of proton exchange membrane (PEM) fuel cells at subzero temperatures. Hydrophilic nano-oxide such as SiO(2) is added into the catalyst layer (CL) of the cathode to increase its water storing capacity. To investigate the effect of nanosized SiO(2) addition, the catalyst coated membranes (CCMs) with 5 wt.% and without nanosized SiO(2) are fabricated. Although at normal operation conditions the cell performance with nanosized SiO(2) was not so good as that without SiO(2), cold start experiments at -8 degrees C showed that the former could start and run even at 100 mA cm(-2) for about 25 min and latter failed very shortly. Even at -10 degrees C, the addition of SiO(2) dramatically increased the running time before the cell voltage dropped to zero. These results further experimentally proved the cold start process was strongly related with the cathode water storage capacity. Also, the performance degradation during 8 cold start cycles was evaluated through polarization curves, cyclic voltammetry (CV) and electrochemical impedance spetra (EIS). Compared with the cell without SiO(2) addition, the cell with 5 wt.% SiO(2) indicated no obvious degradation on cell performance, electrochemical active surface area and charge transfer resistance after experiencing cold start cycles at -8 degrees C. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: TEMPERATURE OPERATION ;  ICE FORMATION ;  PERFORMANCE ;  PEFC ;  PEMFC ;  PARAMETERS ;  STACKS ;  DESIGN ;  WATER
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000278967900043
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/103639
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Fuel Cells, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Miao, Zhili,Yu, Hongmei,Song, Wei,et al. Characteristics of proton exchange membrane fuel cells cold start with silica in cathode catalyst layers[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2010,35(11):5552-5557.
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