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http://dx.doi.org/10.4191/KCERS.2005.42.5.319

Study on the Synthesis by Milling and Solid-State Reaction Method and Electrochemical Properties of LiNiO2  

Kim, Hunuk (Division of Advanced Materials Engineering, Research Center of Industrial Technology, Engineering Research Institute, Chonbuk National University)
Youn, SunDo (Division of Applied Chemical Engineering, Chonnam National University)
Lee, Jaecheon (Division of Applied Chemical Engineering, Chonnam National University)
Park, HyeRyoung (Division of Applied Chemical Engineering, Chonnam National University)
Song, Myoungyaup (Division of Advanced Materials Engineering, Research Center of Industrial Technology, Engineering Research Institute, Chonbuk National University)
Publication Information
Journal of the Korean Ceramic Society / v.42, no.5, 2005 , pp. 319-325 More about this Journal
Abstract
[ $LiNiO_2$ ] was synthesized by the solid-state method after mixing $LiOH{\cdot}H_2O$ and $Ni(OH)_2$ with SPEX mill. The optimum condition for the synthesis of $LiNiO_2$ was the calcination at $750^{\circ}C$ for 30h in $O_2$ stream after milling for 1 h. The $LiNiO_2$ synthesized under this condition showed relatively large value of $I_{003}/I_{104}$ and relatively small value of R-factor. When $LiNiO_2$ was cycled in 2.7$\~$4.15 V at 0.1C-rate, the first discharge capacity was not very large (145.8 mAh/g) but it showed good cycling performance. When $LiNiO_2$ was cycled in 2.7$\~$4.2 V at 0.1C-rate, the first discharge capacity was large but ,it showed poor cycling performance probably because of the transition of H2 hexagonal structure to H3 hexagonal structure. In addition, when $LiNiO_2$ was cycled in 1.0$\~$4.8 V at 1/24C- rate, the first discharge capacity was very large (257.7 mAh/g) and the discharge capacity increased with the number of cycles.
Keywords
Milling; Solid-state reaction method; Electrochemical properties; R-factor;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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