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Deft dipping combined with electrochemical reduction to obtain 3D electrochemical reduction graphene oxide and its applications in supercapacitors
- Wang, Bin, Liu, Qi, Han, Jiao, Zhang, Xiaofei, Wang, Jun, Li, Zhanshuang, Yan, Huijun, Liu, Lianhe
- Journal of materials chemistry A 2013 v.2 no.4 pp. 1137-1143
- capacitance, cobalt oxide, dipping, electrical conductivity, electrochemistry, electrodes, foams, graphene oxide, nickel, strength (mechanics)
- In this paper, a combination of deft dipping and simple rapid electrochemical reduction were used to coat electrochemically reduced graphene oxide (ERGO) on Ni foam. After acid etching, a 3D ERGO with sufficient mechanical strength, low density and high electrical conductivity was obtained. As proof, a high mass loading of Co₃O₄ sheets has been grown on the 3D ERGO. The 3D ERGO/Co₃O₄ composite electrode exhibits a specific capacitance of 600 F g⁻¹ and a power density of 2.5 kW kg⁻¹.