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题名: Kinetic investigation of oxygen reduction reaction in sub-freezing acid media
作者: Song, Wei1, 2;  Hou, Junbo1, 2;  Yu, Hongmei1;  Hao, Lixing1, 2;  Shao, Zhigang1;  Yi, Baolian1
通讯作者: 俞红梅
关键词: Proton exchange membrane (PEM) fuel cell ;  Pt/C catalyst ;  Oxygen reduction reaction (ORR) ;  Subzero ;  Cold start
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2008-09-01
DOI: 10.1016/j.ijhydene.2008.06.057
卷: 33, 期:18, 页:4844-4848
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: A three-electrode system with 2 M H(2)SO(4) as the electrolyte was developed to investigate the oxygen reduction kinetics on Pt/C catalyst at sub-freezing temperatures. This system successfully avoided the ice formation above -10 degrees C. Furthermore, the influence of different membrane electrode assembly (MEA) status, i.e. the membrane hydration and the electrode structure, on the kinetic results in a sub-freezing fuel cell was diminished in this method. By cyclic voltammetry (CV) test, the electrochemical active surface area (ECA) of PVC catalyst at sub-freezing temperatures was obtained. Results showed that the ECA at sub-freezing temperatures was almost the same as that at room temperature, either the H-desorption or the H-adsorption process at subzero temperatures still took place in the same way. According to the analysis of the linear scan voltammetry (LSV), the kinetics of oxygen reduction on Pt/C catalyst at sub-freezing temperatures was explored. The limiting current density decreased as temperature dropped and the exchange current density at subzero temperatures still obeyed the Arrhenius theory. (c) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: PEM FUEL-CELL ;  COLD START ;  REPETITIVELY BROUGHT ;  ELECTRODE-KINETICS ;  O-2 REDUCTION ;  TEMPERATURE ;  PERFORMANCE ;  PLATINUM ;  DEPENDENCE ;  INTERFACE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000259894000016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100527
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, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Song, Wei,Hou, Junbo,Yu, Hongmei,et al. Kinetic investigation of oxygen reduction reaction in sub-freezing acid media[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2008,33(18):4844-4848.
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