The electrochemical properties of cells assembled with the LiNiO2 (LNO) recycled from cathode materialsof waste lithium secondary batteries (Li[Ni,Co,Mn]O2), were evaluated in this study. The leaching, neutralization andsolvent extraction process were applied to produce high-purity NiSO4 solution from waste lithium secondary batteries.High-purity NiO powder was then fabricated by the heat-treatment and mixing of the NiSO4 solution and H2C2O4.Finally, LiNiO2 as a cathode material for lithium ion secondary batteries was synthesized by heat treatment and mixingof the NiO and Li2CO3 powders. We assembled the cells using the LiNiO2 powders and evaluated the electrochemicalproperties. Subsequently, we evaluated the recycling possibility of the cathode materials for waste lithium secondary bat-tery using the processes applied in this work.

 Abstract  1. 서 론  2. 실험방법   2.1. NCM(Li[Ni,Co,Mn]O2)계 폐 리튬이차전지로부터 NiSO4 회수 및 LiNiO2 합성   2.2. 전기화학적 특성평가  3. 결과 및 고찰   3.1. 원료물질 분석   3.2. 침출   3.3. 중화 공정 및 용매 추출   3.4. LiNiO2 합성   3.5. 전기화학적 특성 평가  4. 결 론  감사의 글  참고문헌

• 곽용규(경상대학교 나노신소재융합공학과 & 그린에너지 융합연구소) | Kwag, Yong-Gyu
• 김미소( 경상대학교 나노신소재융합공학과 & 그린에너지 융합연구소) | 김미소
• 김유영( 경남과학기술대학교 기계공학과) | 김유영
• 최임식( 메탈화학㈜ 기술연구소) | 최임식
• 박동규( 링크사업단 & 경상대학교 나노신소재공학부) | 박동규
• 안인섭( 경상대학교 나노신소재융합공학과 & 그린에너지 융합연구소) | 안인섭
• 조권구( 경상대학교 나노신소재융합공학과 & 그린에너지 융합연구소) | 조권구