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学科主题: 物理化学
题名: Vertically aligned carbon-coated titanium dioxide nanorod arrays on carbon paper with low platinum for proton exchange membrane fuel cells
作者: 蒋尚峰1, 2;  Yi, Baolian1;  Zhang, Changkun1, 2;  Liu, Sa1, 2;  Yu, Hongmei1;  Shao, Zhigang1
通讯作者: 俞红梅 ;  邵志刚
关键词: Proton exchange membrane fuel cells ;  Carbon-coated titanium dioxide nanorod arrays ;  Low platinum loading
刊名: JOURNAL OF POWER SOURCES
发表日期: 2015-02-15
DOI: 10.1016/j.jpowsour.2014.11.093
卷: 276, 期:1, 页:80-88
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Electrochemistry ;  Energy & Fuels
英文摘要: Carbon-coated titanium dioxide (TiO2-C) has received much attention as a catalyst support in proton exchange membrane fuel cells. In this study, TiO2 nanorod arrays (NRs) are hydrothermally grown on carbon paper and converted into TiO2-C NRs by heat treatment at 900 degrees C under methane atmosphere. Then, platinum nanoparticles are sputtered onto the TiO2 NRs by physical vapor deposition to produce Pt -TiO2-C. The as-prepared Pt-TiO2-C exhibits high stability during accelerated durability tests. As compared with the commercial gas diffusion electrode (GDE, 34.4% decrease), a minor reduction in the electrochemically active surface area of the Pt-TiO2-C electrode after 1500 cycles (10.6% decrease) is observed. When the as-prepared electrode with ultra-low platinum content (Pt loading: 28.67 mu g cm(-2)) is employed as the cathode of a single cell, the electrode generates power that is 4.84 x that of the commercial GDE (Pt loading: 400 mu g cm(-2)). An electrode that generates power of 11.9 kW g(pt)(-1) (as the cathode) is proposed. The fabricated Pt-TiO2-C electrode can be used in proton exchange membrane fuel cells. (C) 2014 Elsevier B.V. All rights reserved.
关键词[WOS]: HIGH-PERFORMANCE ;  NANOWIRE ARRAYS ;  ULTRA-LOW ;  ELECTROCATALYSTS ;  SUPERCAPACITORS ;  ELECTRODES ;  CATALYSTS ;  SUPPORTS ;  METALS ;  CO
语种: 英语
WOS记录号: WOS:000348747200011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143789
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, Fuel Cell Syst & Engn Lab, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Jiang, Shangfeng,Yi, Baolian,Zhang, Changkun,et al. Vertically aligned carbon-coated titanium dioxide nanorod arrays on carbon paper with low platinum for proton exchange membrane fuel cells[J]. JOURNAL OF POWER SOURCES,2015,276(1):80-88.
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