Preparation of a reduced graphene oxide hydrogel by Ni ions and its use in a supercapacitor electrode

RSC Advances ◽  
2015 ◽  
Vol 5 (29) ◽  
pp. 22753-22758 ◽  
Author(s):  
Van Hoang Luan ◽  
Jin Suk Chung ◽  
Seung Hyun Hur
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Synthesis ◽  
Reduced Graphene Oxide ◽  
Chemical Reaction ◽  
Electrostatic Force ◽  
Three Dimensional ◽  
Nickel Acetate ◽  
Acetate Solution ◽  
Supercapacitor Electrode ◽  
Reduced Graphene

A three-dimensional (3D) reduced graphene oxide hydrogel (rGOH) was prepared by hydrothermal synthesis based on the electrostatic force and chemical reaction between graphene oxide (GO) and Ni ions in a nickel acetate solution.

Hydrothermal synthesis of a MnOOH/three-dimensional reduced graphene oxide composite and its electrochemical properties for supercapacitors

2015 ◽  
Vol 3 (42) ◽  
pp. 20944-20951 ◽  
Author(s):  
Shumin Sun ◽  
Shen Wang ◽  
Tongchi Xia ◽  
Xiaofeng Li ◽  
Qingxian Jin ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Synthesis ◽  
Electrochemical Performance ◽  
Electrochemical Properties ◽  
Reduced Graphene Oxide ◽  
Three Dimensional ◽  
Oxide Composite ◽  
Excellent Electrochemical Performance ◽  
Reduced Graphene

MnOOH/3D-rGO shows excellent electrochemical performance because of the 3D interpenetrating microstructure of rGO and the nanoneedle structure of MnOOH.

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