Materials Letters | 2019
Facile synthesis of heterogeneous Co3O4-nanowires/vertical-graphene-nanosheets on Ni foam for high performance supercapacitors
Abstract
Abstract The heterogeneous Co3O4-nanowires/vertical-graphene-nanosheets on Ni foam (Co3O4NW/VGN/NF) was synthesized by microwave plasma-enhanced chemical vapor deposition (MPCVD) and hydrothermal process. The morphology of Co3O4NW/VGN/NF shows a uniform porous structure. The Co3O4NW/VGN/NF electrode exhibits a high area specific capacitance of 8.44\u202fF\u202fcm−2 at 5\u202fmA\u202fcm−2. The excellent capacitive performance of the composite material can be ascribed to the improved charge transfer rate and ion diffusion path.