Multi‐stage Ordered Mesoporous Carbon‐graphene Aerogel‐Ni3S2/Co4S3 for Supercapacitor Electrode

Abstract

AbstractTransition metal sulfides have emerged as promising materials in supercapacitor. In this work, we firstly developed an interface‐induced superassembly approach to fabricate NiSx and CoSx nanoparticles, which based on ordered mesoporous carbon‐graphene aerogel composites for supercapacitor electrodes. The obtained multi‐component superassembled nanoparticles‐carbon matrix composites have controllable 3D porous structure of multi‐stage composite. The two‐dimensional graphene interlaced to form a 3D framework with large sponge‐like pores, and then the graphene surface was loaded with mesoporous carbon with mesoporous pore size and vertical orientation. The composites display high specific capacitance of 958.1 F g−1 at 0.1 A g−1. The capacitance retains about 97.3 % after 3000 charging‐discharging cycles at 2 A g−1. These results indicate that the obtained OMC−GA−Ni3S2/Co4S3 is a promising material for electrochemical capacitors, which providing new technical methods and ideas for the research of new energy and analytical sensor materials in the fields of energy storage, photocatalysis, point‐of‐care testing devices and other fields.