Water oxidation by manganese oxide electrocatalytic films synthesized by chemical solution deposition method

Hyo Sang Jeon, Su Jin Ahn, Michael Shincheon Jee, Suk Goo Yoon, Yun Jeong Hwang, Byoung Koun Min

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Water splitting catalyzed by low cost and earth abundant material is critically important issue in mass production of hydrogen from water using electrical energy. In this study, we developed highly efficient manganese oxide (MnOx) electrocatalytic films by a simple chemical solution deposition (CSD) method for oxygen evolution reaction (OER). Specifically, the MnOx electrocatalytic films were synthesized at different annealing temperatures at 350, 450, and 550°C after the precursor solution coating on fluorine-doped tin oxide (FTO) glass substrates. The MnOx electrocatalytic film prepared at 450°C has exhibited the most catalytic activity for OER with the overpotential of 387 mV at 10 mA/cm2 in 1 M NaOH alkaline solution. We suggested that this high OER activity of MnOx electrocatalytic film arise from the higher surface area, richer Mn3+ state on the catalysts surface, and low charge transfer resistance between electrocatalytic film and electrolyte based on electrochemical surface area (ECSA), X-ray photoelectron spectroscopy (XPS), and electrochemical impedance spectroscopy (EIS) analysis.

Original languageEnglish
Pages (from-to)F3113-F3118
JournalJournal of the Electrochemical Society
Volume163
Issue number11
DOIs
Publication statusPublished - 2016

Fingerprint

Manganese oxide
manganese oxides
Oxide films
oxide films
Oxidation
oxidation
Water
Oxygen
water
oxygen
water splitting
Fluorine
electric power
Tin oxides
Electrochemical impedance spectroscopy
Electrolytes
tin oxides
fluorine
catalytic activity
Charge transfer

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Materials Chemistry
  • Electrochemistry

Cite this

Water oxidation by manganese oxide electrocatalytic films synthesized by chemical solution deposition method. / Jeon, Hyo Sang; Ahn, Su Jin; Jee, Michael Shincheon; Yoon, Suk Goo; Hwang, Yun Jeong; Min, Byoung Koun.

In: Journal of the Electrochemical Society, Vol. 163, No. 11, 2016, p. F3113-F3118.

Research output: Contribution to journalArticle

Jeon, Hyo Sang ; Ahn, Su Jin ; Jee, Michael Shincheon ; Yoon, Suk Goo ; Hwang, Yun Jeong ; Min, Byoung Koun. / Water oxidation by manganese oxide electrocatalytic films synthesized by chemical solution deposition method. In: Journal of the Electrochemical Society. 2016 ; Vol. 163, No. 11. pp. F3113-F3118.
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AU - Min, Byoung Koun

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