VO₂(B) nanobelts/reduced graphene oxide composites for high-performance flexible all-solid-state supercapacitors.

ABSTRACT: Vanadium oxide has attracted extensive attention for electrochemical capacitors due to its wide range of versatility. However, due to the relative poor conductivity and chemical stability of vanadium oxide, severe losses of capacitance often occur during charge and discharge processes. Herein, a free-standing vanadium dioxide (VO₂(B)) nanobelts/reduced graphene oxide (VO₂/rGO) composite film was fabricated by assembly of VO₂(B) nanobelts and rGO for supercapacitors. The flexible rGO sheets and VO₂(B) nanobelts intertwined together to form a porous framework, which delivered a 353 F g^-1 specific capacitance at 1 A g^-1, and after 500 cycles, the specific capacitance retention rate was 80% due to the enhanced conductivity of th

SUBMITTER: Lv W 

PROVIDER: S-EPMC6658522 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature