Electrophoretic deposition of graphene nanosheets on nickel foams for electrochemical capacitors

Graphene nanosheets are deposited on nickel foams with 3D porous structure by an electrophoretic deposition method using the colloids of graphene monolayers in ethanol as electrolytes. The high specific capacitance of 164 F g −1 is obtained from cyclic voltammetry measurement at a scan rate of 10 mV...

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Bibliographic Details
Published inJournal of power sources Vol. 195; no. 9; pp. 3031 - 3035
Main Authors Chen, Yao, Zhang, Xiong, Yu, Peng, Ma, Yanwei
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.05.2010
Subjects
Electrochemical capacitors
Electrophoretic deposition
Graphene nanosheets
Nickel foams
Graphene nanosheets
Nickel foams
Electrochemical capacitors
Electrophoretic deposition
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Summary:Graphene nanosheets are deposited on nickel foams with 3D porous structure by an electrophoretic deposition method using the colloids of graphene monolayers in ethanol as electrolytes. The high specific capacitance of 164 F g −1 is obtained from cyclic voltammetry measurement at a scan rate of 10 mV s −1. When the current densities are set as 3 and 6 A g −1, the specific capacitance values still reach 139 and 100 F g −1, respectively. The high capacitance is attributed to nitrogen atoms in oxidation product of p-phenylene diamine (OPPD) adsorbed on the surface of the graphene nanosheets. The comparable results suggest potential application to electrochemical capacitors based on the graphene nanosheets.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2009.11.057