Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Preparation of Manganese Oxide Powders by Spray Pyrolysis and its Electrochemical Characterization

Spray Pyrolysis에 의한 Manganese Oxide 입자의 제조 및 전기화학적 특성

  • 최원창 (고려대학교 공과대학 재료공학과) ;
  • 변동진 (고려대학교 공과대학 재료공학과) ;
  • 이중기 (한국과학기술연구원 나노환경 연구센타) ;
  • 박달근 (한국과학기술연구원 나노환경 연구센타) ;
  • 김현중 (한국과학기술연구원 나노환경 연구센타)
  • Published : 2001.11.01
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Abstract

Spray pyrolysis is a favorable technique to form complex mixed-metal oxide powders with high purity in high temperature region. Manganese oxide powders were prepared by spray pyrolysis from an aqueous solution of $Mn(NO_3)_2$. Powders were formed in the temperature range of 500~$700^{\circ}C$ under the constant pressure of 300torr. All the powders have hydrous forms. When the temperature was increased, the size and the surface area of the particles decreased. An electrochemical capacitors were made with manganese oxide electrodes and KOH electrolyte. With the temperature decreased, capacitors showed high capacitance. Capacitor which was prepared with powders formed in the temperature $500^{\circ}C$ demonstrated specific capacitances as high as 83F/g.

Keywords

References

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