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题名: A highly active porous Pt-PbOx/C catalyst toward alcohol electro-oxidation in alkaline electrolyte
作者: Li, Guanglan1, 2;  Jiang, Luhua1;  Zhang, Bingsen3;  Jiang, Qian1, 2;  Su, Dang Sheng3, 4;  Sun, Gongquan1
关键词: Alcohol electro-oxidation ;  Alkaline electrolyte ;  Electrocatalysts ;  Platinum-lead oxide
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2013-09-30
DOI: 10.1016/j.ijhydene.2013.07.076
卷: 38, 期:29, 页:12767-12773
收录类别: SCI
文章类型: Article
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 highly active porous Pt-PbOx/C composite toward alcohol (methanol, ethanol and ethylene glycol) oxidation in alkaline media is synthesized via a modified polyol method. The crystalline structure, morphology, elemental distribution and the chemical state of metals on surface of the Pt-PbOx/C are evaluated by X-ray diffraction, high-resolution transmission electron microscopy and X-ray photoelectron spectroscopy. The large porous Pt-PbOx/C composite are composed of both Pt and PbOx primary nanoparticles of 1-2 nm which mixed geometrically with unchanged electronic environments of Pt and PbOx. The potentiodynamic and potentiostatic measurements for alcohol electro-oxidation over Pt-PbOx/C in alkaline media show that the activities toward C1-C2 alcohol electro-oxidation were improved remarkably compared to the commercial PVC due to both geometric effect, i.e., the addition of PbOx to Pt provides steric hindrance for CO adsorption, and bi-functional effect, i.e., OHad species could be generated over PbOx surface at lower potentials which facilitates the dehydrogenation of the intermediate methoxy. Crown Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: METHANOL ELECTROOXIDATION ;  INTERMETALLIC COMPOUNDS ;  OXIDATION ;  PLATINUM ;  ACID
语种: 英语
WOS记录号: WOS:000325307000009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137710
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, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
4.Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

Recommended Citation:
Li, Guanglan,Jiang, Luhua,Zhang, Bingsen,et al. A highly active porous Pt-PbOx/C catalyst toward alcohol electro-oxidation in alkaline electrolyte[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2013,38(29):12767-12773.
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