• 专利标题:   Recovering lithium precursor by preparing cathode active material mixture containing lithium composite oxide, forming pre-precursor mixture including lithium oxide by reacting cathode active material mixture and separating by washing.
  • 专利号:   WO2021066362-A1, KR2021039555-A, CN114514199-A, EP4029830-A1, US2022352571-A1, JP2022551073-W
  • 发明人:   HONG S J, KIM J M, SON S R, HA D W, HONGSEOKJOON, KIM J, SOHN S, HE D, SUN C, HONG X
  • 专利权人:   SK INNOVATION CO LTD, SK INNOVATION CO LTD, SK INNOVATION CO LTD
  • 国际专利分类:   C01D015/02, C01D015/08, H01M008/008, C01G045/10, C01G051/10, C01G053/10, H01M010/54, H01M010/052, H01M004/505, H01M004/525, H01M004/583, C22B001/02, C22B026/12, C22B003/04, C22B003/16, C22B003/22, C22B007/00
  • 专利详细信息:   WO2021066362-A1 08 Apr 2021 202135 Pages: 17
  • 申请详细信息:   WO2021066362-A1 WOKR012632 18 Sep 2020
  • 优先权号:   KR121933, CN80069866

▎ 摘  要

NOVELTY - Method for recovering lithium precursor involves preparing cathode active material mixture containing a lithium composite oxide, forming a pre-precursor mixture including lithium oxide by reacting the cathode active material mixture with a carbon-based solid material in an inert gas atmosphere, and separating the lithium precursor by washing the pre-precursor mixture with water. USE - The method is useful for recovering lithium precursor. ADVANTAGE - The method does not aggregate lithium oxide, separates lithium oxide without additional grinding process, and obtains high-purity lithium precursor with high yield and high efficiency.