Superstructured NiMoO₄@CoMoO₄ core-shell nanofibers for supercapacitors with ultrahigh areal capacitance.

ABSTRACT: High areal capacitance for a practical supercapacitor electrode requires both large mass loading and high utilization efficiency of electroactive materials, which presents a great challenge. Herein, we demonstrated the unprecedented synthesis of superstructured NiMoO₄@CoMoO₄ core-shell nanofiber arrays (NFAs) on a Mo-transition-layer-modified nickel foam (NF) current collector as a new material, achieving the synergistic combination of highly conductive CoMoO₄ and electrochemical active NiMoO₄. Moreover, this superstructured material exhibited a large gravimetric capacitance of 1,282.2 F/g in 2 M KOH with a mass loading of 7.8 mg/cm², leading to an ultrahigh areal capacitance of 10.0 F/cm² that is larger than any reported va

SUBMITTER: Chang L 

PROVIDER: S-EPMC10041093 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature