Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Electrical Characteristics of Li(Mn$_{1-}$$\delta$Nb$\delta$)$_2$O$_4$ Cathode Materials for Li-Ion Secondary Batteries

리튬 이온 이차전지 Cathode용 Li(Mn$_{1-}$$\delta$Nb$\delta$)$_2$O$_4$의 전기적 특성

  • 오용주 (서울시립대학교 공과대학 재료공학과) ;
  • 유광수 (서울시립대학교 공과대학 재료공학과)
  • Published : 1998.09.01
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Abstract

As a basic study for cathode materials of {{{{ { {LiMn }_{2 }O }_{4 } }}-based lithium-ion secondary batteries Li({{{{ { { { {Mn }_{1-$\delta$ }Nb }_{$\delta$} )}_{2 }O }_{4 } }} ($\delta$=0.05, 0.1, 0.2) materials which Nb is substituted for Mn were synthesized by the solid state reaction at 80$0^{\circ}C$ and 110$0^{\circ}C$ respectively. The second phase {{{{ { LiNbO}_{3 } }} appeared above $\delta$=0.1 As the result of im-pedance analysis as the amount of substituted Nb increased the resistivity of grain boundary increased greatly. Compared to undoped-{{{{ { {LiMn }_{2 }O }_{4 } }} the electrical conductivity of Li({{{{ { { { {Mn }_{1-$\delta$ }Nb }_{$\delta$} )}_{2 }O }_{4 } }} decreased slightly but is charging capacity and potential plateau increased.

Keywords

References

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