Solvothermal synthesis of NiWO₄ nanostructure and its application as a cathode material for asymmetric supercapacitors.

ABSTRACT: This study proposes a facile solvothermal synthesis of nickel tungstate (NiWO₄) nanowires for application as a novel cathode material for supercapacitors. The structure, morphology, surface area and pore distribution were characterized and their capacitive performances were investigated. The results showed that the NiWO₄ nanowires synthesized in ethylene glycol solvent could offer a high specific capacitance of 1190 F g^-1 at a current density of 0.5 A g^-1 and a capacitance retaining ratio of 61.5% within 0.5-10 A g^-1. When used as a cathodic electrode of an asymmetric supercapacitor (ASC), the NiWO₄ nanowire based device can be cycled reversibly in a high-voltage region of 0-1.7 V with a high specific capacitance of 160 F g<

SUBMITTER: Tian J 

PROVIDER: S-EPMC9092149 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature