Graphene sheet/porous NiO hybrid film for supercapacitor applications |
| |
Authors: | Xia Xinhui Tu Jiangping Mai Yongjin Chen Rong Wang Xiuli Gu Changdong Zhao Xinbing |
| |
Institution: | State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, PR China. |
| |
Abstract: | We report the preparation of a nickel-foam-supported graphene sheet/porous NiO hybrid film by the combination of electrophoretic deposition and chemical-bath deposition. The obtained graphene-sheet film of about 19 layers was used as the nanoscale substrate for the formation of a highly porous NiO film made up of interconnected NiO flakes with a thickness of 10-20 nm. The graphene sheet/porous NiO hybrid film exhibits excellent pseudocapacitive behavior with pseudocapacitances of 400 and 324 F g(-1) at 2 and 40 A g(-1), respectively, which is higher than those of the porous NiO film (279 and 188 F g(-1) at 2 and 40 A g(-1)). The enhancement of the pseudocapacitive properties is due to reinforcement of the electrochemical activity of the graphene-sheet film. |
| |
Keywords: | carbon graphene nanostructures nickel supercapacitors |
本文献已被 PubMed 等数据库收录! |