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题名: Effects of treatment in different atmosphere on Pt3Sn/C electrocatalysts for ethanol electro-oxidation
作者: Jiang, LH;  Zhou, ZH;  Li, WZ;  Zhou, WJ;  Song, SQ;  Li, HQ;  Sun, GQ;  Xin, Q
刊名: ENERGY & FUELS
发表日期: 2004-05-01
DOI: 10.1021/ef034073q
卷: 18, 期:3, 页:866-871
收录类别: SCI
文章类型: Article
项目归属: 305
产权排名: 1;1
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Energy & Fuels ;  Engineering, Chemical
研究领域[WOS]: Energy & Fuels ;  Engineering
英文摘要: Pt3Sn/C catalyst was prepared by a modified polyol process and treated in air, H-2/Ar, and Ar atmosphere, respectively. XRD analyses indicate that all of these catalysts have face-centered cubic (fcc) crystal structure. Temperature-programmed reduction (TPR) experiments show that more Sn exists in zero-valence in the Ar-treated PtSn catalyst than in the others. Cyclic voltammetry (CV), chronoamperometry (CA) experiments, and the performance tests of direct ethanol fuel cell (DEFC) indicate that the catalytic activity of PtSn/C for ethanol oxidation was affected significantly by the chemical state of Sn in catalyst particles. The as-prepared PtSn/C gives the higher power density, while Ar-treated PtSn/C shows the lower cell performance. It seems that the multivalence Sn rather than the zero-valence Sn in the PtSn catalyst is the favorable form for ethanol oxidation. Energy dispersion X-ray analysis (EDX) of the PtSn/C-as prepared and PtSn/C (after stability test) shows the active species (platinum, tin, and oxygen) composition changed to a different extent. Further attempt to improve the catalyst stability is needed.
关键词[WOS]: METHANOL FUEL-CELLS ;  OXYGEN REDUCTION ;  PLATINUM ;  OXIDATION ;  CATALYSTS ;  ELECTRODES ;  ALLOYS ;  PTRU
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000221588300035
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/81233
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, Direct Methanol Fuel Cell Lab, Beijing 100864, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catal, Beijing 100864, Peoples R China

Recommended Citation:
Jiang, LH,Zhou, ZH,Li, WZ,et al. Effects of treatment in different atmosphere on Pt3Sn/C electrocatalysts for ethanol electro-oxidation[J]. ENERGY & FUELS,2004,18(3):866-871.
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