Template-Free Preparation of α-Ni(OH)₂ Nanosphere as High-Performance Electrode Material for Advanced Supercapacitor.

ABSTRACT: Although it is one of the promising candidates for pseudocapacitance materials, Ni(OH)₂ is confronted with poor specific capacitance and inferior cycling stability. The design and construction of three-dimensional (3D) nanosphere structures turns out to be a valid strategy to combat these disadvantages and has attracted tremendous attention. In this paper, a 3D α-Ni(OH)₂ nanosphere is prepared via a facile and template-free dynamic refluxing approach. Significantly, the α-Ni(OH)₂ nanosphere possesses a high specific surface area (119.4 m²/g) and an abundant porous structure. In addition, the as-obtained α-Ni(OH)₂ electrodes are investigated by electrochemical measurements, which exhibit a high specific capacitance of 1243 F/g at 1 A/g

SUBMITTER: Zhang R 

PROVIDER: S-EPMC9267997 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature