Spontaneously deposited manganese oxide on acetylene black in an aqueous potassium permanganate solution

Sang Bok Ma, Young Ho Lee, Kyun Young Ahn, Chi Myung Kim, Ki Hwan Oh, Kwang Bum Kim

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

Manganese oxide was deposited spontaneously on acetylene black by the simple immersion of the acetylene black into a KMnO4aqueous solution via a one-step chemical process for application in electrochemical capacitors. Acetylene black was found to act as the reducing agent and substrate for the heterogeneous nucleation of manganese dioxide in an aqueous KMnO4solution via the in situ monitoring of the reduction potential and pH of the solution and supplementary ultraviolet-visible analysis. The morphology of the acetylene black before and after depositing the manganese oxide was examined using scanning and transmission electron microscopy, which revealed several-nanometer-thick manganese oxide deposits on the acetylene black. X-ray diffraction and Raman spectroscopy showed that the manganese oxide deposited on the acetylene black was the birnessite-type.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume153
Issue number1
DOIs
Publication statusPublished - 2006 Jan 1

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Potassium Permanganate
Acetylene
Manganese oxide
Potassium
Reducing Agents
Reducing agents
Manganese
Raman spectroscopy
manganese oxide
Capacitors
Nucleation
Deposits
Transmission electron microscopy
X ray diffraction
Scanning electron microscopy
Monitoring
Substrates

All Science Journal Classification (ASJC) codes

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

Cite this

Ma, Sang Bok ; Lee, Young Ho ; Ahn, Kyun Young ; Kim, Chi Myung ; Oh, Ki Hwan ; Kim, Kwang Bum. / Spontaneously deposited manganese oxide on acetylene black in an aqueous potassium permanganate solution. In: Journal of the Electrochemical Society. 2006 ; Vol. 153, No. 1.
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Spontaneously deposited manganese oxide on acetylene black in an aqueous potassium permanganate solution. / Ma, Sang Bok; Lee, Young Ho; Ahn, Kyun Young; Kim, Chi Myung; Oh, Ki Hwan; Kim, Kwang Bum.

In: Journal of the Electrochemical Society, Vol. 153, No. 1, 01.01.2006.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Spontaneously deposited manganese oxide on acetylene black in an aqueous potassium permanganate solution

AU - Ma, Sang Bok

AU - Lee, Young Ho

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AU - Kim, Chi Myung

AU - Oh, Ki Hwan

AU - Kim, Kwang Bum

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AB - Manganese oxide was deposited spontaneously on acetylene black by the simple immersion of the acetylene black into a KMnO4aqueous solution via a one-step chemical process for application in electrochemical capacitors. Acetylene black was found to act as the reducing agent and substrate for the heterogeneous nucleation of manganese dioxide in an aqueous KMnO4solution via the in situ monitoring of the reduction potential and pH of the solution and supplementary ultraviolet-visible analysis. The morphology of the acetylene black before and after depositing the manganese oxide was examined using scanning and transmission electron microscopy, which revealed several-nanometer-thick manganese oxide deposits on the acetylene black. X-ray diffraction and Raman spectroscopy showed that the manganese oxide deposited on the acetylene black was the birnessite-type.

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