Electrochemical reduction of graphene oxide in organic solvents

• Published in: Electrochimica acta Vol. 56; no. 15; pp. 5363 - 5368
• Main Authors: Harima, Yutaka, Setodoi, Sunao, Imae, Ichiro, Komaguchi, Kenji, Ooyama, Yousuke, Ohshita, Joji, Mizota, Haruo, Yano, Jun
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.06.2011; Elsevier
• Subjects: Aluminum; Applied sciences; Capacitors. Resistors. Filters; Electrical engineering. Electrical power engineering; Electrochemical double layer capacitor; Electrochemistry; Exact sciences and technology; Foils; Graphene; Graphite; Oxides; Propylene; Reduction; Resistivity; Solvents; Various equipment and components; Electrochemistry; Reduction; Graphene; Electrochemical double layer capacitor; Graphite; Scanning electron microscopy; Fourier transformation; Organic carbonate; Aluminium; Metal; Electrolytic capacitor; Surface structure; Electrodes; Chemical reduction; Infrared spectrometry; Organic solvent; Morphology; Supercapacitor; Electrochemical reaction; Specific capacity; Electrical characteristic; Modified material
• ISSN: 0013-4686; 1873-3859
• DOI: 10.1016/j.electacta.2011.03.117

[Display omitted] ► Graphene oxide on substrates was electrochemically reduced in organic solvents. ► The electrochemically reduced film gave an electrical conductivity of 3 S cm −1. ► The film exhibited a high specific capacitance of 147.2 F g −1 in propylene carbonate. ► The electrochemical reduction was also feasible on Al foils. Graphene oxide (GO) cast on conductive substrates was electrochemically reduced in some organic solvents. The amount of electricity required for the almost complete reduction of GO was 2.0 C for 1 mg GO, corresponding to attaching of a one-electron reducible species to each benzene ring in graphene. The electrochemically reduced GO film gave an electrical conductivity of about 3 S cm −1 and exhibited a relatively high specific capacitance of 147.2 F g −1 in propylene carbonate. The electrochemical reduction of GO was feasible on Al foils as well.