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곽용규,김미소,김유영,최임식,박동규,안인섭,조권구,Kwag, Yong-Gyu,Kim, Mi-So,Kim, Yoo-Young,Choi, Im-Sic,Park, Dong-Kyu,Ahn, In-Sup,Cho, Kwon-Koo 한국분말야금학회 2014 한국분말재료학회지 (KPMI) Vol.21 No.4
The electrochemical properties of cells assembled with the $LiNiO_2$ (LNO) recycled from cathode materials of waste lithium secondary batteries ($Li[Ni,Co,Mn]O_2$), were evaluated in this study. The leaching, neutralization and solvent extraction process were applied to produce high-purity $NiSO_4$ solution from waste lithium secondary batteries. High-purity NiO powder was then fabricated by the heat-treatment and mixing of the $NiSO_4$ solution and $H_2C_2O_4$. Finally, $LiNiO_2$ as a cathode material for lithium ion secondary batteries was synthesized by heat treatment and mixing of the NiO and $Li_2CO_3$ powders. We assembled the cells using the $LiNiO_2$ powders and evaluated the electrochemical properties. Subsequently, we evaluated the recycling possibility of the cathode materials for waste lithium secondary battery using the processes applied in this work.