POROUS GRAPHENE-MANGANESE DIOXIDE NANOWIRES COMPOSITE FILM FOR HIGH VOLUMETRIC PERFORMANCE SUPERCAPACITORS

摘要：

　　We report a novel strategy to prepare densely packed porous graphene and MnO2 nanowires composite film(PGNs-MnO2 NWs)through graphene etching process,hydrothermal method and subsequent vacuum-assisted filtration method.The ion diffusion ability of the PGNs-MnO2 NWs film is greatly enhanced due to the contribution of crossplane diffusion from porous graphene and in-plane diffusion from MnO2 nanowires-graphene sandwiched structure.Based on its high surface area,fast ion diffusion and high film density,the PGNs-MnO2 NWs film electrode exhibits high volumetric specific capacitance of 206 F cm-3 at 5 mV s-1 in 1 M Na2SO4 aqueous solution.The capacitance remains 99.5%after 2000 cycles of the cyclic voltammetry method.The strategy provides a facile and effective method to achieve high performance electrode materials for supercapacitor.

关键词： Porous graphene Manganese dioxide nanowires Composite film Volumetric performance Supercapacitors

作者: Mingxuan Han Hao Wang Di Yu Lili Jiang Yu Zhang

作者单位: Jilin Institute of Chemical Technology,Chengde Street,Jilin City,Jilin Province,China

会议类型: 国际会议

会议名称: 2018 International Conference on New Materials and Intelligent Manufacturing (ICNMIM(2018年第一届新材料与智能制造国际会议))

会议地点: 吉林

会议语种:英文

页码: 427-430

在线出版日期: 2018-06-23（万方平台首次上网日期，不代表论文的发表时间）