公开(公告)号：US20180123167A1

公开(公告)日：2018-05-03

申请号：US15852336

申请日：2017-12-22

Applicant: BYD COMPANY LIMITED

Inventor： GUANGUI YI ,  Yongjun Ma ,  Zizhu Guo ,  Xianghui Wang ,  Jing Xie

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M10/02

CPC classification number: H01M10/0562 ,  C01B25/45 ,  H01M2/145 ,  H01M2/1646 ,  H01M10/02 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/058 ,  H01M2300/0071 ,  H01M2300/0091 ,  H01M2300/0094 ,  Y02T10/7011

Abstract: A solid electrolyte contains an internal component and an external component coated on a surface of the internal component. The internal component is represented by a formula Li1+xMxTi2−x(PO4)3, M is one or more elements selected from a group consisting of Al, La, Cr, Ga, Y, and In, and 0.05≤x≤0.4. The external component has an ionic conductivity of no less than 10−6 S/cm, an electrochemical window of the solid electrolyte is no less than 5V. A method of preparing the solid electrolyte and a lithium ion battery including the solid electrolyte are also provided.