公开(公告)号：EP4379866A1

公开(公告)日：2024-06-05

申请号：EP22848605.6

申请日：2022-07-27

申请人： Shenzhen Innovazone Technology Co., Ltd.

发明人： WAN, Yuanxin ,  PEI, Xianyinan ,  WANG, Yaxiong ,  KONG, Lingyong ,  ZHAO, Zhongke ,  ZHONG, Zeqin ,  ZHONG, Wen ,  REN, Wangbao

IPC分类号： H01M4/62

CPC分类号： Y02E60/10 ,  H01M4/62

摘要： The present application discloses a core-shell cathode lithium-supplementing additive, a preparation method therefor, and an application thereof. The core-shell cathode lithium-supplementing additive of the present application comprises a core body and a coating layer covering the core body, the coating layer being an isolating conductive packaging layer, the core body containing a lithium-supplementing material, and the lithium-supplementing material comprising Li2+cAcB1-c and/or LiaXb, wherein 0 ≤ c ≤ 1, A is at least one of N and P, B is at least one of S and O, 1 ≤ a ≤ 3, 1 ≤ b ≤ 3, and X is any one selected from F, S, N, B, P, O, and Se. The lithium-supplementing material contained in the core-shell cathode lithium-supplementing additive of the present application is rich in lithium, thereby increasing the Coulombic efficiency and improving the overall electrochemical performance of a battery. The coating layer can improve lithium removal and moisture isolation during a charging process. The preparation method therefor can ensure the stability in the structure and electrochemical performance of the prepared core-shell cathode lithium-supplementing additive.