公开(公告)号：US20230115744A1

公开(公告)日：2023-04-13

申请号：US17914252

申请日：2021-03-23

Applicant: BYD COMPANY LIMITED

Inventor： Yongzhi PAN ,  Caiyun YE ,  Sanzhi CHEN ,  Yi PAN

IPC: H01M4/525 ,  H01M4/62 ,  H01M4/04 ,  H01M10/0525

Abstract: A lithium iron phosphate cathode sheet, a preparation method thereof, and a lithium iron phosphate lithium-ion battery are disclosed, wherein the lithium iron phosphate cathode sheet includes lithium iron phosphate particles, and in the lithium iron phosphate particles, in terms of particle number, a percentage of lithium iron phosphate particles with a particle size in the range of 50 nm-500 nm is 70-90%, a percentage of lithium iron phosphate particles with a particle size greater than 500 nm and less than 1000 nm is 5-20%, and a percentage of lithium iron phosphate particles with a particle size in the range of 1 μm-10 μm is 2-10%.