A highly active porous Pt-PbOx/C catalyst toward alcohol electro-oxidation in alkaline electrolyte

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	A highly active porous Pt-PbOx/C catalyst toward alcohol electro-oxidation in alkaline electrolyte
	G. L. Li; L. H. Jiang; B. S. Zhang; Q. Jiang; D. S. Su; G. Q. Sun
	2013
发表期刊	International Journal of Hydrogen Energy
ISSN	0360-3199
卷号	38 期号:29 页码:12767-12773
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.
部门归属	[li, guanglan ; jiang, luhua ; jiang, qian ; sun, gongquan] chinese acad sci, dalian inst chem phys, dalian natl lab clean energy, dalian 116023, peoples r china. [li, guanglan ; jiang, qian] univ chinese acad sci, beijing 100039, peoples r china. [zhang, bingsen ; su, dang sheng] chinese acad sci, inst met res, shenyang 110016, peoples r china. [su, dang sheng] max planck gesell, fritz haber inst, d-14195 berlin, germany. ; jiang, lh (reprint author), chinese acad sci, dalian inst chem phys, dalian natl lab clean energy, dalian 116023, peoples r china. ; gqsun@dicp.ac.cn
关键词	Alcohol Electro-oxidation Alkaline Electrolyte Electrocatalysts Platinum-lead Oxide Methanol Electrooxidation Intermetallic Compounds Oxidation Platinum Acid
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语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71313
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. L. Li,L. H. Jiang,B. S. Zhang,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.
APA	G. L. Li,L. H. Jiang,B. S. Zhang,Q. Jiang,D. S. Su,&G. Q. Sun.(2013).A highly active porous Pt-PbOx/C catalyst toward alcohol electro-oxidation in alkaline electrolyte.International Journal of Hydrogen Energy,38(29),12767-12773.
MLA	G. L. Li,et al."A highly active porous Pt-PbOx/C catalyst toward alcohol electro-oxidation in alkaline electrolyte".International Journal of Hydrogen Energy 38.29(2013):12767-12773.