Electrochemical Performance of MnO₂/Graphene Flower-like Microspheres Prepared by Thermally-Exfoliated Graphite.

ABSTRACT: To enhance the electrochemical performance of MnO₂/graphene composite, herein, thermally-exfoliated graphite (TE-G) is adopted as a raw material, and a hydrothermal reaction is conducted to achieve the exfoliation of TE-G and the loading of MnO₂ nanosheets. Through optimizing the TE-G/KMnO₄ ratio in the redox reaction between carbon and KMnO₄, flower-like MnO₂/G microspheres (MnO₂/G-10) are obtained with 83.2% MnO₂ and 16.8% residual graphene. Meanwhile, corresponding MnO₂/rGO composites are prepared by using rGO as raw materials. Serving as a working electrode in a three-electrode system, MnO₂/G-10 composite displays a specific capacitance of 500 F g^-1 at 1 A g^-1, outst

SUBMITTER: Liu X 

PROVIDER: S-EPMC9024236 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature