Co₉S₈ nanoparticle-decorated carbon nanofibers as high-performance supercapacitor electrodes.

ABSTRACT: This work reported Co₉S₈ nanoparticle-decorated carbon nanofibers (CNF) as a supercapacitor electrode. By using a mild ion-exchange method, the cobalt oxide-based precursor nanoparticles were transformed to Co₉S₈ nanoparticles in a microwave hydrothermal process, and these nanoparticles were decorated onto a carbon nanofiber backbone. The composition of the nanofibers can be readily tuned by varying the Co acetate content in the precursor. The porous carbon nanofibers offered a fast electron transfer pathway while the well dispersed Co₉S₈ nanoparticles acted as the redox center for energy storage. As a result, high specific capacitance of 718 F g^-1 at 1 A g^-1 can be achieved with optimized Co₉

SUBMITTER: Zhang N 

PROVIDER: S-EPMC9086558 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature