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题名: Synthesis, characterization and performance of PtSn/C electrocatalyst for direct ethanol fuel cell
作者: Jiang, LH;  Zhou, ZH;  Zhou, WJ;  Wang, SL;  Wang, GX;  Sun, GQ;  Xin, Q
关键词: electrocatalysts ;  PtSn ;  direct ethanol fuel cell
刊名: CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
发表日期: 2004-08-01
卷: 25, 期:8, 页:1511-1516
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: PtSn/C electrocatalysts (Pt3Sn/C, Pt3Sn/C, Pt4Sn/C) with different n(Pt)/n(Sn) ratios were prepared by a modified polyol process and characterized by XRD, TEM and cyclic voltammetry (CV) techniques. TEM results show that the mean size of metal particles in the catalysts prepared is smaller than 4 nm with a sharp distribution. XRD results show that all the in-house catalysts have fcc crystalline structure. The crystal lattice parameter a (fee) of Pt in Pt3Sn/C is 0.3946 nm, which implies that alloying of Pt and Sri could dilate the cell lattice parameter of Pt. CV and H-2 chemisorption results show that the unit activity of PtSn/C increased. CV results also show that Pt3Sn/C has the highest activity for ethanol oxidati-on. Single cell tests with PtSn/C as the anode catalysts show that maximum output power increased with increasing Sn molar fraction, and then decreased. The difference of catalytic activity between PtSn/C with various Sri molar fractions may be caused by the particle size effect, alloying degree between Pt and Sri and the cell internal impedance. The EDX analyses of the Pt3Sn/C catalyst before ana after stabilization test show that the content of both Pt and Sri decreased. The life of PtSn/C catalysts needs to be improved further.
关键词[WOS]: OXYGEN REDUCTION ;  SUPPORTED PLATINUM ;  METHANOL OXIDATION ;  ELECTROOXIDATION ;  CATALYSTS ;  ELECTRODES ;  ALLOYS ;  RU
语种: 英语
WOS记录号: WOS:000223524600034
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139465
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 Alcohol Fuel Cell Lab, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis Basis, Dalian 116023, Peoples R China

Recommended Citation:
Jiang, LH,Zhou, ZH,Zhou, WJ,et al. Synthesis, characterization and performance of PtSn/C electrocatalyst for direct ethanol fuel cell[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2004,25(8):1511-1516.
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