Hexadecyl trimethyl ammonium bromide assisted growth of NiCo₂O₄@reduced graphene oxide/ nickel foam nanoneedle arrays with enhanced performance for supercapacitor electrodes.

ABSTRACT: NiCo₂O₄@reduced graphene oxide (rGO)/nickel foam (NF) composites were prepared via a hydrothermal method followed by annealing assisted by hexadecyl trimethyl ammonium bromide (CTAB). NiCo₂O₄@rGO/NF nanoneedle arrays grew directly on Ni foam (NF) without using a binder. The effect of graphene oxide (GO) concentration on the electrochemical properties of the composite was studied. When the GO concentration was 5 mg L^-1, the as-prepared NiCo₂O₄@rGO/NF reaches the highest specific capacitance of 1644 F g^-1 at a current density of 1 A g^-1. Even at 15 A g^-1, the specific capacitance is still 1167 F g^-1 and the capacitance retention rate is 89% after 10 000 cycles at 10

SUBMITTER: Liu T 

PROVIDER: S-EPMC8981078 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature