▎ 摘　　要

Metal-organic frameworks (MOF) are a novel generation of promising electrodes for supercapacitors. The synthesis of glucose modified, high-quality graphene (HQG) as a platform for the nucleation and growth of bimetallic MOF nanosheets (NiCo-MOF) is reported. The -COOH and -OH groups formed on the surface, thus enhance the interaction between the HQG and NiCo-MOF. This heterostructure is used as an electrode in the preparation of asymmetric supercapacitors with a capacity of 244 F/g and an energy density of 76.3 W h/g. The nanocomposite also exhibits a high specific capacitance of 4077.3 F/g at a current density of 2.5 A/g. Therefore, new approaches have been introduced for the fabrication of efficient supercapacitors, and a step forward has been taken for the development of other electrical applications, including batteries, fuel cells, catalysts, and types of sensors. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.