文献类型：期刊文献

英文题名：In situ synthesis of Mn3O4 on Ni foam/graphene substrate as a newly self-supported electrode for high supercapacitive performance

作者：Yang, Jie[1]; Wang, Liujie[1]; Ma, Zhihua[1]; Wei, Mingdeng[2]

第一作者：杨杰

通讯作者：Ma, Zhihua

机构：[1] College of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang, Henan, 450003, China; [2] Institute of Advanced Energy Materials, FuZhou University, Fuzhou, Fujian, 350002, China

第一机构：新乡学院化学化工学院

年份：2019

卷号：534

起止页码：665-671

外文期刊名：Journal of Colloid and Interface Science

收录：EI(收录号：20183905875651);Scopus(收录号：2-s2.0-85053839560)

语种：英文

外文关键词：Capacitance - Electrodeposition - Graphite electrodes - Manganese oxide - Nickel - Supercapacitor

摘要：A newly self-supported electrode composed of Mn3O4 on Ni foam/graphene (NF/graphene/Mn3O4) was synthesized in situ by electrodeposition, and was used as a supercapacitor electrode for the first time. An ultrahigh specific capacitance of 630 Fg?1 can be achieved at a current density of 0.5 Ag?1. The maximum energy density of 94.4 Wh kg?1 can be achieved, and the capacitance retention can be maintained about 97% after 20,000 cycles at 10 Ag?1. The electrochemical properties, including specific capacitance, energy density and cycling performance, were better than those in previous reports on Mn3O4-graphene electrodes. Such an outstanding property may be attributed to its unique characteristics, such as self-supported structure, favorable electric conductivity and cellular-like porous morphology. ? 2018