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题名: Electrocatalytic performance of Ni modified MnOX/C composites toward oxygen reduction reaction and their application in Zn-air battery
作者: Wu, Qiumei1, 2;  Jiang, Luhua1;  Qi, Luting1;  Wang, Erdong1;  Sun, Gongquan1
关键词: Oxygen reduction reaction ;  Manganese oxide ;  Nickel hydroxide ;  Activity ;  Zinc-air battery
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2014-02-25
DOI: 10.1016/j.ijhydene.2013.12.076
卷: 39, 期:7, 页:3423-3432
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 series of Ni modified MnOx/C composites were synthesized by introducing NaBH4 to MnO2/C aqueous suspension containing Ni(NO3)(2). The physical properties and the activity of the composites toward the oxygen reduction reaction (ORR) were investigated via transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and the electrochemical techniques. The results show that the higher activity of the composites toward the ORR is correlated with the higher content of Mn0OH species transformed from Mn(II) on the surface of the composite. The main nickel species in the composites is Ni(OH)(2), while Ni(OH)(2) shows little activity toward the ORR. However, introducing Ni(OH)2 with proper amount into the MnOx/C improves the distribution of the active material MnOx, which contributes to a surface with more MnOOH. The optimal composite is of the Ni/Mn atomic ratio of 1:2 and the MnOx loading of 28 wt.%. The maximum power density of the zinc-air battery with the optimized Ni modified MnOx/C as the cathode catalyst reaches up to 122 mW cm(-2), much higher than the one with the MnOx/ C as the air cathode catalyst (89 mW cm(-2)), and slightly higher than those with the Pd/C and Pt/C as the cathode catalysts. Crown Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: MANGANESE OXIDE NANOPARTICLES ;  NITROGEN-DOPED GRAPHENE ;  FUEL-CELLS ;  PALLADIUM NANOPARTICLES ;  ALKALINE-SOLUTION ;  CARBON ELECTRODES ;  CATALYSTS ;  TEMPERATURE ;  NANOSTRUCTURES ;  MECHANISM
语种: 英语
WOS记录号: WOS:000331917400039
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145436
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.Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

Recommended Citation:
Wu, Qiumei,Jiang, Luhua,Qi, Luting,et al. Electrocatalytic performance of Ni modified MnOX/C composites toward oxygen reduction reaction and their application in Zn-air battery[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2014,39(7):3423-3432.
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