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所属单位：电子信息工程学院

发表刊物：INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE

关键字：Graphene Nickel oxide Nanocomposites Energy storage and conversion Supercapacitors

摘要：NiO nanoparticles embedded in graphene nanosheets (GNS) were successfully prepared by coprecipitation and pyrolysis beforehand. The three-dimensional GNS matrix with interconnected pore network structure can be filled with electrolyte ions serving as a double ion buffer pool during charge and discharge. High conductivity graphene, as a three-dimensional network, can be used to support the fast transmission of charge inside the NiO electrode during charging and discharging processes and meanwhile increase the performance rate. Hence, the NiO/GNS nanocomposites exhibit specific capacitance value of 1125.8 F g(-1) at a current density of 2 A g(-1) in 2 M KOH solution. This composite exhibits a good cyclic stability, with a small loss of 5.2% of maximum capacitance over a consecutive 2000 cycles, indicating that the prepared NiO/GNS nanocomposites serve as potential and promising candidates for supercapacitor electrodes.

ISSN号：1452-3981

是否译文：否

发表时间：2018-09-01

合写作者：马晓平,张劲东,Lin, Zixia,Zhao, Bin

通讯作者：邱旦峰