Nickel and cobalt oxide composite as a possible electrode material for electrochemical supercapacitors

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DOIResolve DOI: http://doi.org/10.1016/j.jpowsour.2011.10.031
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TypeArticle
Journal titleJournal of Power Sources
ISSN03787753
Volume217
Pages554561
SubjectElectrochemical supercapacitor; Ni oxide; Co oxide; Composite electrode material
AbstractIn this paper, a composite material, Ni0.37Co0.63(OH)2, is synthesized using the chemical precipitation method with the purpose to develop electrode materials for supercapacitors. Physical characterization using XRD, EDX, and SEM show that Ni0.37Co0.63(OH)2 possesses an amorphous structure, which leads to high specific capacitance of 1840 F g−¹ in the potential window of 0–1.5 V. Cyclic voltammetry methods are employed to characterize the electrochemical properties of this electrode material in a N2-saturated alkaline solution. The results demonstrate that this material could give a two-electron redox process accompanied by two OH− ions. Cyclic voltammogram curves recorded for this Ni0.37Co0.63(OH)2 material are used to measure the specific capacitances at different potential scan rates. To validate this material for supercapacitor applications, charging/discharging tests are also conducted.
Publication date
LanguageEnglish
AffiliationEnergy, Mining and Environment; National Research Council Canada
Peer reviewedYes
IdentifierS037877531101980X
NPARC number21268797
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Record identifier24d1ea46-aa3f-46ad-8464-f459f04a9c86
Record created2013-11-13
Record modified2017-03-23
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