公开(公告)号：US20210017040A1

公开(公告)日：2021-01-21

申请号：US17043610

申请日：2019-05-21

Applicant: Microvast Power Systems Co., LTD.

Inventor： BRYAN YONEMOTO ,  XIAO ZHANG ,  HUIJIE GUO ,  JIANZHAO LIU

IPC: C01G53/00 ,  H01M4/36 ,  H01M4/1391 ,  H01M4/525 ,  H01M4/04

Abstract: The invention relates to a method for preparing transitional-metal particles (cathode particle precursor) under a co-precipitation reaction. In this method, by feeding different types of anion compositions and/or cation compositions, and adjusting the pH to match with the species, precipitated particles are deposited to form a slurry, colleting the slurry, treating with water, and drying to get a cathode particle precursor. Mixing the cathode particle precursor with a lithium source and calcining to yield core-shell structured cathode active particles. Such cathode active particle can be used to prepare cathode of lithium-ion battery.