Hierarchically Ordered Porous CoOOH Thin-Film Electrodes for High-Performance Supercapacitors

Dattatray Dhawale, Sehwan Kim, Dae Hwan Park, Jin Ho Choy, Salem S. Al-deyab, Katsuhiko Ariga, Eunkyoung Kim, Ajayan Vinu

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

We report a simple, cost-effective, and potentially scalable approach for the fabricating hierarchically porous CoOOH thin-film supercapacitors by combining a soft-templating and a chemical-bath deposition (CBD) method. The prepared electrode materials exhibit uniform morphology and highly ordered macropores, achieving a maximum specific capacitance of 387Fg-1 at a current density of 1mAcm-2, with a high energy of 19Whkg-1 and power density of 1713Wkg-1. In addition, the porous CoOOH electrodes show good stability with a cycling efficiency >90% after 5000 charge-discharge cycles, which could lead to the generation of novel energy-storage devices with better efficiencies.

Original languageEnglish
Pages (from-to)497-502
Number of pages6
JournalChemElectroChem
Volume2
Issue number4
DOIs
Publication statusPublished - 8 Jan 2015
Externally publishedYes

Keywords

  • Chemical-bath deposition
  • Electrochemistry
  • Porous CoOOH
  • Supercapacitors
  • Thin films

ASJC Scopus subject areas

  • Electrochemistry
  • Catalysis

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  • Cite this

    Dhawale, D., Kim, S., Park, D. H., Choy, J. H., Al-deyab, S. S., Ariga, K., Kim, E., & Vinu, A. (2015). Hierarchically Ordered Porous CoOOH Thin-Film Electrodes for High-Performance Supercapacitors. ChemElectroChem, 2(4), 497-502. https://doi.org/10.1002/celc.201402365