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Hierarchical β-Co(OH)2/CoO nanosheets: an additive-free synthesis approach for supercapattery applications

Authors
  • Babu, I. Manohara1
  • William, J. Johnson1
  • Muralidharan, G.1
  • 1 The Gandhigram Rural Institute—Deemed to be University, Department of Physics, Gandhigram, Tamilnadu, 624302, India , Gandhigram (India)
Type
Published Article
Journal
Ionics
Publisher
Springer Berlin Heidelberg
Publication Date
Mar 14, 2019
Volume
25
Issue
5
Pages
2437–2444
Identifiers
DOI: 10.1007/s11581-019-02944-3
Source
Springer Nature
Keywords
License
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Abstract

Cobalt hydroxide nanosheets have been synthesized via facile and affordable simple chemistry route without any additives for structure design. Co(OH)2 nanosheets exhibit a maximum specific capacity of 111 C g−1 at a current density of 0.5 A g−1. Asymmetric supercapacitor (Co(OH)2//AC) has been fabricated and it delivers the specific capacitance of 34 F g−1 with the power density of 300 W kg−1 at a current density of 1 A g−1. These profitable features of cobalt hydroxide nanosheets prepared in the present work are quite promising electrode material for high-performance supercapatteries.

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