公开(公告)号：US20220204355A1

公开(公告)日：2022-06-30

申请号：US17655092

申请日：2022-03-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yongshou LIN ,  Guobao WANG ,  Ke WANG ,  Jiang LIU ,  Bin YAO

IPC: C01D15/08 ,  C01B25/37 ,  H01M4/58 ,  H01M10/54 ,  C25C1/12 ,  H01M10/0525

Abstract: A method for producing a lithium iron phosphate precursor by using a retired lithium iron phosphate battery as a raw material is provided, which includes steps of: soaking a battery cell in acid, performing electrolysis to reclaim copper, oxidizing ferrous iron, precipitating iron phosphate, and precipitating lithium carbonate. After precipitation is completed, performing one-step reclaim to obtain the lithium iron phosphate precursor.