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

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

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


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
Issue number4
Publication statusPublished - 2015 Jan 8

Bibliographical note

Publisher Copyright:
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Electrochemistry


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