Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Electrochemical Properties of $LiNi_{1-y}In_yO_2$ Synthesized by Milling and Solid-/state Reaction Method

기계적 혼합과 고상법에 의해 합성한 $LiNi_{1-y}In_yO_2$ 전기화학적 특성

  • Kim, Hun-Uk (Division of Advanced Materials Engineering, Automobile Hi-Technology Research Center, Engineering Research Institute, Chonbuk National University) ;
  • Youn, Sun-Do (Division of Applied Chemical Engineering, Chonnam National University) ;
  • Lee, Jae-Cheon (Division of Applied Chemical Engineering, Chonnam National University) ;
  • Park, Hye-Ryoung (Division of Applied Chemical Engineering, Chonnam National University) ;
  • Park, Chan-Gi (Division of Advanced Materials Engineering, Automobile Hi-Technology Research Center, Engineering Research Institute, Chonbuk National University) ;
  • Song, Myoung-Youp (Division of Advanced Materials Engineering, Automobile Hi-Technology Research Center, Engineering Research Institute, Chonbuk National University)
  • 김훈욱 (전북대학교 신소재공학부 부설 공학연구원자동차신기술연구센터) ;
  • 윤순도 (전남대학교 응용화학부) ;
  • 이재천 (전남대학교 응용화학부) ;
  • 박혜령 (전남대학교 응용화학부) ;
  • 박찬기 (전북대학교 신소재공학부 부설 공학연구원자동차신기술연구센터) ;
  • 송명엽 (전북대학교 신소재공학부 부설 공학연구원자동차신기술연구센터)
  • Published : 2006.03.15
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Abstract

By calcining at $750^{\circ}C$ for 30 h in $O_2$ stream after milling, $LiNi_{1-y}In_yO_2$(y = 0.005, 0.01, 0.025, 0.05, and 0.1) were synthesized and their electrochemical properties were investigated. All the samples had the $R{\bar{3}}m$ structure. In addition, they contained $LiInO_2$ phase and the intensities of the peaks for the $LiInO_2$ phase increased as the value of y increased. The sample with y = 0.01 had the largest first discharge capacity (140.2 mAh/g), but the sample with y = 0.005 had a better cycling performance. The samples with y $\geq$ 0.025 had a bad cycling performance irrespective of the first discharge capacity. The sample with y = 0.005 had the largest value of $I_{003}/I_{104}$ and the smallest value of R-factor. Among all the samples, $LiNi0_{0.995}In_{0.005}O_2$ had the best electrochemical properties. This sample had a smaller first discharge capacity than $LiNiO_2$, but it showed a better cycling performance than $LiNiO_2$.

Keywords

References

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