Nickel nanoparticles prepared by hydrazine hydrate reduction and their application in supercapacitor

Wu, Xiaozhong, Xing, Wei, Zhang, Lei, Zhuo, Shuping, Zhou, Jin, Wang, Guiqiang and Qiao, Shizhang (2012) Nickel nanoparticles prepared by hydrazine hydrate reduction and their application in supercapacitor. Powder Technology, 224 162-167. doi:10.1016/j.powtec.2012.02.048


Author Wu, Xiaozhong
Xing, Wei
Zhang, Lei
Zhuo, Shuping
Zhou, Jin
Wang, Guiqiang
Qiao, Shizhang
Title Nickel nanoparticles prepared by hydrazine hydrate reduction and their application in supercapacitor
Journal name Powder Technology   Check publisher's open access policy
ISSN 0032-5910
1873-328X
Publication date 2012-07
Sub-type Article (original research)
DOI 10.1016/j.powtec.2012.02.048
Volume 224
Start page 162
End page 167
Total pages 6
Place of publication Lausanne, Switzerland
Publisher Elsevier
Collection year 2013
Language eng
Formatted abstract
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 12nm. 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 416.6Fg -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.
Keyword Supercapacitor
Pseudocapacitance
Nickel nanoparticles
Nickel hydroxide
Redox reaction
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 27 February 2012.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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