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Effects of treatment in different atmosphere on Pt3Sn/C electrocatalysts for ethanol electro-oxidation
Jiang, LH; Zhou, ZH; Li, WZ; Zhou, WJ; Song, SQ; Li, HQ; Sun, GQ; Xin, Q
刊名ENERGY & FUELS
2004-05-01
DOI10.1021/ef034073q
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
关键词[WOS]METHANOL FUEL-CELLS ; OXYGEN REDUCTION ; PLATINUM ; OXIDATION ; CATALYSTS ; ELECTRODES ; ALLOYS ; PTRU
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.
语种英语
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WOS记录号WOS:000221588300035
引用统计
被引频次:83[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/81233
专题中国科学院大连化学物理研究所
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
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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.
APA Jiang, LH.,Zhou, ZH.,Li, WZ.,Zhou, WJ.,Song, SQ.,...&Xin, Q.(2004).Effects of treatment in different atmosphere on Pt3Sn/C electrocatalysts for ethanol electro-oxidation.ENERGY & FUELS,18(3),866-871.
MLA Jiang, LH,et al."Effects of treatment in different atmosphere on Pt3Sn/C electrocatalysts for ethanol electro-oxidation".ENERGY & FUELS 18.3(2004):866-871.
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