Invention Grant
- Patent Title: Polymer solid electrolyte and lithium secondary battery comprising same
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Application No.: US16330795Application Date: 2018-04-13
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Publication No.: US10886563B2Publication Date: 2021-01-05
- Inventor: Seungha Kim , Youngcheol Choi , Jonghyun Chae , Kyoung Hoon Kim , Yeonju Lee , Daeil Kim , Lucia Kim
- Applicant: LG CHEM, LTD.
- Applicant Address: KR Seoul
- Assignee: LG CHEM, LTD.
- Current Assignee: LG CHEM, LTD.
- Current Assignee Address: KR Seoul
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: KR10-2017-0048292 20170414,KR10-2018-0042604 20180412
- International Application: PCT/KR2018/004316 WO 20180413
- International Announcement: WO2018/190665 WO 20181018
- Main IPC: H01M10/0565
- IPC: H01M10/0565 ; H01M10/052 ; H01M10/42 ; C07C309/65 ; C07C309/63 ; C07D333/36 ; C07D333/48 ; H01M10/0525 ; H01M10/0567 ; H01M10/0569 ; H01M10/0568
Abstract:
A polymer solid electrolyte having high ion conductivity and interfacial stability is provided. An additive including an organic compound having a highest occupied molecular orbital (HOMO) energy of −8.5 eV or higher is used, which facilitates film formation in a positive electrode due to low oxidation potential. The resulting polymer solid electrolytes have enhanced film formation on the surface of a positive electrode surface and enhanced interfacial stability, while maintaining battery performance. Lithium secondary battery having enhanced performance are also described.
Public/Granted literature
- US20190280332A1 POLYMER SOLID ELECTROLYTE AND LITHIUM SECONDARY BATTERY COMPRISING SAME Public/Granted day:2019-09-12
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