Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Fabrication of LiNiO2 using NiSO4 Recovered from NCM (Li[Ni,Co,Mn]O2) Secondary Battery Scraps and Its Electrochemical Properties

NCM(Li[Ni,Co,Mn]O2)계 폐 리튬이차전지로부터 NiSO4의 회수와 이를 이용한 LiNiO2 제조 및 전기화학적 특성

  • Kwag, Yong-Gyu (Dept. of Materials Engineering and Convergence Technology & RIGET, Gyeongsang National University) ;
  • Kim, Mi-So (Dept. of Materials Engineering and Convergence Technology & RIGET, Gyeongsang National University) ;
  • Kim, Yoo-Young (Dept. of Mechanical Engineering, Gyeongnam National University of Science and Technology) ;
  • Choi, Im-Sic (R&D center, Metal Chemistry Corp.) ;
  • Park, Dong-Kyu (LINC & School of Materials Science and Engineering, Gyeongsang National University) ;
  • Ahn, In-Sup (Dept. of Materials Engineering and Convergence Technology & RIGET, Gyeongsang National University) ;
  • Cho, Kwon-Koo (Dept. of Materials Engineering and Convergence Technology & RIGET, Gyeongsang National University)
  • 곽용규 (경상대학교 나노신소재융합공학과 & 그린에너지 융합연구소) ;
  • 김미소 (경상대학교 나노신소재융합공학과 & 그린에너지 융합연구소) ;
  • 김유영 (경남과학기술대학교 기계공학과) ;
  • 최임식 (메탈화학(주) 기술연구소) ;
  • 박동규 (링크사업단 & 경상대학교 나노신소재공학부) ;
  • 안인섭 (경상대학교 나노신소재융합공학과 & 그린에너지 융합연구소) ;
  • 조권구 (경상대학교 나노신소재융합공학과 & 그린에너지 융합연구소)
  • Received : 2014.07.22
  • Accepted : 2014.08.18
  • Published : 2014.08.28
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Abstract

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.

Keywords

References

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