Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Fabrication of Three-dimensionally Ordered Macroporous Electrode Materials by Using PMMA Template

PMMA 구를 주형으로 이용한 3DOM 전극 구조체의 제조

  • Seo Kyoung Soo (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Jung Ha-Kyun (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Son Yongkeun (Department of Chemistry, Sungkyunkwan University)
  • 서경수 (한국화학연구원 화학소재연구부 형광물질연구팀) ;
  • 정하균 (한국화학연구원 화학소재연구부 형광물질연구팀) ;
  • 손용근 (성균관대학교 화학과)
  • Published : 2004.08.01
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Abstract

Three-dimensionally ordered macroporous (3DOM) structures of the $LiCoO_2$ electrode materials for Li secondary batteries were fabricated by using the close-packed arrays of PMMA spheres served as templates. In order to successfully fabricate the cathode materials with highly ordered array form, the metal citrates were applied to new precursors. The precursor/template composites were prepared by the infiltration with metal citrate precursors into the voids of template. By removing the PMMA templates, then, the inverse opal structures with the uniform pores of narrow size distribution were resulted. It was confirmed that the 3DOM $LiCoO_2$ material is to take a single phase of rocksalt (R3m) structure. In addition, 3DOM $LiNiO_2$ and $LiMn_{2}O_4$ cathode materials were fabricated using an identical preparation procedure. Also, the morphology of the 3DOM cathode materials calcined at $500^{\circ}C\;to\;700^{\circ}C$ was observed by scanning electron microscope.

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