公开(公告)号：WO2021242831A2

公开(公告)日：2021-12-02

申请号：PCT/US2021/034209

申请日：2021-05-26

Applicant: WORCESTER POLYTECHNIC INSTITUTE

Inventor： WANG, Yan ,  MA, Xiaotu ,  GRATZ, Eric ,  FU, Jinzhao ,  VANAPHUTI, Panawan

IPC: C01D15/00 ,  C30B1/02 ,  H01M10/052 ,  H01M10/54 ,  B22F8/00 ,  C30B29/16 ,  C30B1/04 ,  C30B1/12 ,  C30B29/22 ,  C30B29/52 ,  H01M2004/028 ,  H01M4/505 ,  H01M4/525

Abstract: A recycling and synthesis of charge material for secondary batteries generates single-crystal charge materials for producing batteries with greater charge cycle longevity. Charge material particles undergo a heating for fusing or enhancing grain boundaries between polycrystalline particles. The resulting, more well-defined grain boundaries are easily etched by a relatively weak mineral acid solution. The acid solution removes material at the grain boundaries to separate secondary particles into primary particles along the grain boundaries. The resulting single crystal (monocrystalline) charge material particles are washed and filtered, and typically re-sintered to accommodate any needed lithium (lithium carbonate), and result in a charge material with larger surface area, higher lithium diffusivity and lower cation ordering.

公开(公告)号：EP4157796A2

公开(公告)日：2023-04-05

申请号：EP21813618.2

申请日：2021-05-26

Applicant: Worcester Polytechnic Institute

Inventor： WANG, Yan ,  MA, Xiaotu ,  GRATZ, Eric ,  FU, Jinzhao ,  VANAPHUTI, Panawan

IPC: C01D15/00 ,  C30B1/02 ,  H01M10/052 ,  H01M10/54 ,  B22F8/00 ,  C30B29/16

公开(公告)号：EP4150697A1

公开(公告)日：2023-03-22

申请号：EP22788773.4

申请日：2022-04-12

Applicant: Worcester Polytechnic Institute

Inventor： WANG, Yan ,  HOU, Jiahui ,  MA, Xiaotu ,  FU, Jinzhao

IPC: H01M10/54 ,  C01D15/08 ,  C22B26/12 ,  C22B3/16