Invention Grant
- Patent Title: Additive for positive electrode material, positive electrode material and lithium-ion battery comprising the same, and method thereof
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Application No.: US15129987Application Date: 2015-04-28
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Publication No.: US10177382B2Publication Date: 2019-01-08
- Inventor: Xiaoyan Han , Shicai Li , Zhongchun Zhang
- Applicant: BYD COMPANY LIMITED
- Applicant Address: CN
- Assignee: BYD COMPANY LIMITED
- Current Assignee: BYD COMPANY LIMITED
- Current Assignee Address: CN
- Agency: Calfee, Halter & Griswold LLP
- Priority: CN201410173128 20140428
- International Application: PCT/CN2015/077728 WO 20150428
- International Announcement: WO2015/165387 WO 20151105
- Main IPC: H01M4/62
- IPC: H01M4/62 ; H01M10/0525 ; C01B25/45 ; C01G53/00 ; C08K3/32 ; C08K9/06 ; H01M10/42 ; H01M4/1391 ; H01M4/1397 ; H01M4/505 ; H01M4/525 ; H01M4/58 ; H01M4/131 ; H01M4/136 ; H01M10/052 ; H01M4/36 ; H01M4/485 ; H01M4/02
Abstract:
An additive for a positive electrode material includes an internal component and an external component. The internal component contains a silane coupling agent modified inorganic lithium salt. The external component is formed on a surface of the internal component and contains a polymer with a low melting point. The internal component and the external component form a core-shell structure together, and the shell has a porosity of 0.01% to 20%. A positive electrode material and a lithium-ion battery including the additive, and method of preparing the lithium-ion battery are also provided.
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