한국분말재료학회지 (Journal of Powder Materials)

  • 제8권3호
  • /
  • Pages.201-206
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  • 2001
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
권호 표지

Fabrication of $(La, Sr)MO_3$ (M=Mn or Co)/YSZ Nanocomposite Thin Film Electrodes for the Exhaust Gas Purification by a Chemically-Modified Sol-Gel Process

  • Hwang, H.J. (Synergy Materials Research Center, National Institute of Advanced Industrial Science and Technology) ;
  • Moon, J.W. (Synergy Materials Research Center, National Institute of Advanced Industrial Science and Technology) ;
  • Awano, M. (Synergy Materials Research Center, National Institute of Advanced Industrial Science and Technology) ;
  • Maeda, K. (Synergy Ceramics Laboratory, Fine Ceramics Research Association)
  • 발행 : 2001.09.01
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초록

$>LaMnO_3$$(La, Sr)MO_3$, and $(La, Sr)MO_3/YSZ$ gel films were deposited by spin-coating technique on scandium-doped zirconia (YSZ) substrate using the precursor solution prepared from $La(O-i-C_3H_7)_3$, $Co(CH_3COO)_2$or $Mn(O-i-C_3H_7)_2$,2-methoxyethanol, and polyethylene glycol. By heat-treating the gel films, the electrochemical cells, $(La, Sr)MnO_3{\mid}ScSZ{\mid}Pt$ were fabricated. The effect of polyethylene glycol on the microstructure evolution of $$LaCoO_3and $LaMnO_3$thin films was investigated, and NOx decomposition characteristics of the electrochemical cells were investigated at $500^{\circ}C$ to $600^{\circ}C$. By applying a direct current to the $(La, Sr)MnO_3{\mid}ScSZ{\mid}Pt$ electrochemical cell, good NOx conversion rate could be obtained relatively at low current value even if excess oxygen is included in the reaction gas mixture.

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