Chemical synthesis of cobalt oxide thin film electrode for supercapacitor application

S. G. Kandalkar, D. S. Dhawale, Chang Koo Kim, C. D. Lokhande

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142 Citations (Scopus)

Abstract

Cobalt oxide thin film electrode was grown on copper substrate from an aqueous alkaline bath containing cobalt chloride as a cobalt source by adopting simple and inexpensive chemical deposition method and characterized for structural and morphological studies. The supercapacitive properties of cobalt oxide electrode were studied in aqueous KOH electrolyte solution. The effect of electrolyte concentration on specific capacitance and the stability of cobalt oxide electrode were studied. The highest specific capacitance achieved with cobalt oxide films was 118 F g-1. The specific energy (E), specific power (P) and coulomb efficiency (η%) were 5.8 Wh kg-1, 0.33 kW kg-1 and 93.44%, respectively.

Original languageEnglish
Pages (from-to)1299-1302
Number of pages4
JournalSynthetic Metals
Volume160
Issue number11-12
DOIs
Publication statusPublished - 1 Jun 2010

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Keywords

  • Chemical synthesis
  • Cobalt oxides
  • Energy-storage
  • Thin films

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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