Simple Chemical Solution Deposition of Co3O4 Thin Film Electrocatalyst for Oxygen Evolution Reaction

Hyo Sang Jeon, Michael Shincheon Jee, Haeri Kim, Su Jin Ahn, Yun Jeong Hwang, Byoung Koun Min

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)


Oxygen evolution reaction (OER) is the key reaction in electrochemical processes, such as water splitting, metal-air batteries, and solar fuel production. Herein, we developed a facile chemical solution deposition method to prepare a highly active Co3O4 thin film electrode for OER, showing a low overpotential of 377 mV at 10 mA/cm2 with good stability. An optimal loading of ethyl cellulose additive in a precursor solution was found to be essential for the morphology control and thus its electrocatalytic activity. Our results also show that the distribution of Co3O4 nanoparticle catalysts on the substrate is crucial in enhancing the inherent OER catalytic performance.

Original languageEnglish
Pages (from-to)24550-24555
Number of pages6
JournalACS Applied Materials and Interfaces
Issue number44
Publication statusPublished - 2015 Nov 11


  • chemical solution deposition
  • CoO
  • electrocatalyst
  • OER
  • water splitting

ASJC Scopus subject areas

  • Materials Science(all)


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