Title

Microwave-assisted synthesis of spherical β-Ni(OH)2 superstructures for electrochemical capacitors with excellent cycling stability

RIS ID

92197

Publication Details

Mondal, A. Kumar., Su, D., Chen, S., Zhang, J., Ung, A. & Wang, G. (2014). Microwave-assisted synthesis of spherical β-Ni(OH)2 superstructures for electrochemical capacitors with excellent cycling stability. Chemical Physics Letters, 610-611 115-120.

Abstract

A novel single-step microwave-assisted process has been developed to synthesize spherical β-Ni(OH)2 superstructures without using any templates. Structure characterizations show that the spherical β-Ni(OH)2 composed of twisted nanosheets was obtained. The electrochemical properties of the as-prepared materials were evaluated by cyclic voltammetry and chronopotentiometry technology in 2 M KOH solution. Due to the unique morphology, the prepared β-Ni(OH)2 electrode displays a high specific capacitance of 2147 F g−1 at a discharge current of 1 A g−1 and outstanding cycling stability (99.5% capacitance retained after 2000 cycles), suggesting its potential application as an efficient electrode material for high-performance electrochemical capacitors.

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.cplett.2014.07.025