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题名: Nickel nanoparticles prepared by hydrazine hydrate reduction and their application in supercapacitor
作者: Wu, Xiaozhong1;  Xing, Wei1;  Zhang, Lei2;  Zhuo, Shuping1;  Zhou, Jin1;  Wang, Guiqiang1;  Qiao, Shizhang3
关键词: Supercapacitor ;  Pseudocapacitance ;  Nickel nanoparticles ;  Nickel hydroxide ;  Redox reaction
刊名: POWDER TECHNOLOGY
发表日期: 2012-07-01
DOI: 10.1016/j.powtec.2012.02.048
卷: 224, 页:162-167
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: Nickel nanoparticles are prepared successfully through reducing nickel chloride by hydrazine hydrate and are tested as supercapacitor electrode material for the first time. The as-prepared nickel nanoparticles are characterized intensively by a variety of means such as SEM, TEM, XRD and XPS. TEM observations and XRD analysis demonstrated that the size of nickel nanoparticles is about 12 nm. XPS analyses indicate that the surface nickel atoms can react easily with O-2 and water in the atmosphere to form nickel oxide/hydroxide species. As evidenced by electrochemical measurements, these surface nickel oxide/hydroxide species can generate substantial pseudocapacitance, reaching up to 416.6 Fg(-1) for nickel nanoparticles, which is higher than most carbon electrode materials reported in the literatures. This kind of surface metal oxides/hydroxides that generate pseudocapacitance may also occur on other metal nanoparticles except nickel nanoparticles, which provides a new approach to searching for electrode materials with even higher capacitance. (C) 2012 Elsevier ay. All rights reserved.
关键词[WOS]: ELECTROCHEMICAL CAPACITORS ;  OXIDE FILM ;  MESOPOROUS CARBONS ;  ELECTRODE MATERIAL ;  HYDROXIDE ;  PERFORMANCE ;  LIQUID ;  OXIDATION
语种: 英语
WOS记录号: WOS:000304792000021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138050
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.Shandong Univ Technol, Sch Chem Engn, Zibo 255049, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Univ Queensland, Australian Res Council Ctr Excellence Funct Nanom, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia

Recommended Citation:
Wu, Xiaozhong,Xing, Wei,Zhang, Lei,et al. Nickel nanoparticles prepared by hydrazine hydrate reduction and their application in supercapacitor[J]. POWDER TECHNOLOGY,2012,224:162-167.
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