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

23 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

Fingerprint

Thin films
Electrodes
Energy storage
Capacitance
Current density
Costs
Supercapacitor

Keywords

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

ASJC Scopus subject areas

  • Electrochemistry
  • Catalysis

Cite this

Dhawale, D., Kim, S., Park, D. H., Choy, J. H., Al-deyab, S. S., Ariga, K., ... 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

Hierarchically Ordered Porous CoOOH Thin-Film Electrodes for High-Performance Supercapacitors. / Dhawale, Dattatray; Kim, Sehwan; Park, Dae Hwan; Choy, Jin Ho; Al-deyab, Salem S.; Ariga, Katsuhiko; Kim, Eunkyoung; Vinu, Ajayan.

In: ChemElectroChem, Vol. 2, No. 4, 08.01.2015, p. 497-502.

Research output: Contribution to journalArticle

Dhawale, D, Kim, S, Park, DH, Choy, JH, Al-deyab, SS, Ariga, K, Kim, E & Vinu, A 2015, 'Hierarchically Ordered Porous CoOOH Thin-Film Electrodes for High-Performance Supercapacitors', ChemElectroChem, vol. 2, no. 4, pp. 497-502. https://doi.org/10.1002/celc.201402365
Dhawale, Dattatray ; Kim, Sehwan ; Park, Dae Hwan ; Choy, Jin Ho ; Al-deyab, Salem S. ; Ariga, Katsuhiko ; Kim, Eunkyoung ; Vinu, Ajayan. / Hierarchically Ordered Porous CoOOH Thin-Film Electrodes for High-Performance Supercapacitors. In: ChemElectroChem. 2015 ; Vol. 2, No. 4. pp. 497-502.
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