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题名: High electrocatalytic activity of non-noble Ni-Co/graphene catalyst for direct ethanol fuel cells
作者: Wang, ZH; Du, YL(杜永令); Zhang, FY; Zheng, ZX; Zhang, YZ; Wang, CM(王春明)
收录类别: SCIE ; EI
出版日期: 2013-01
刊名: JOURNAL OF SOLID STATE ELECTROCHEMISTRY
卷号: 17, 期号:1
出版者: SPRINGER
出版地: NEW YORK
英文摘要: The electrocatalytic oxidation of ethanol is studied on the non-noble catalysts Ni-Co/graphene and Ni/graphene supported on glass carbon electrode (GCE) in alkaline medium. The synthesized materials are characterized by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, and scanning transmission electron microscopy. The elements of Ni-Co/graphene and Ni/graphene catalysts are characterized using energy-dispersive X-ray spectroscopy. The electrocatalytic properties of Ni-Co/graphene and Ni/graphene for ethanol oxidation are investigated by cyclic voltammetry, chronoamperometry, and Tafel plot. Compared with Ni/graphene catalyst, Ni-Co/graphene has the higher electroactivity and better stability for ethanol oxidation. The rate constant (k (s)) and charge-transfer coefficient (alpha) are calculated for the electron exchange reaction of the modified GCE. The results indicate that Co addition could promote the oxidation reaction at the Ni/graphene catalyst. Our study demonstrates that the low-cost electrocatalyst Ni-Co/graphene has a great potential for real direct ethanol fuel cells' application.
关键词: Non-noble catalyst ; Nickel-cobalt/graphene ; Direct ethanol fuel cells ; Alkaline medium
作者部门: [Wang, Zaihua ; Du, Yongling ; Zhang, Fengyuan ; Zheng, Zhixiang ; Zhang, Yuzhen ; Wang, Chunming] Lanzhou Univ, Dept Chem, Lanzhou 730000, Peoples R China
通讯作者: Wang, CM (reprint author), Lanzhou Univ, Dept Chem, Tianshui Rd 222, Lanzhou 730000, Peoples R China.
学科分类: Electrochemistry
文章类型: Article
所属项目编号: National Nature Science Foundation of China [20775030]
所属项目名称: 国家自然科学基金项目
项目资助者: NSFC
语种: 英语
DOI: 10.1007/s10008-012-1855-8
ISSN号: 1432-8488
WOS记录号: WOS:000313046100010
EI记录号: 20130415923211
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/75093
Appears in Collections:化学化工学院_期刊论文

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Recommended Citation:
Wang, ZH; Du, YL; Zhang, FY; Zheng, ZX; Zhang, YZ; Wang, CM.High electrocatalytic activity of non-noble Ni-Co/graphene catalyst for direct ethanol fuel cells,JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2013,17(1):
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