Invention Grant
- Patent Title: High voltage positive electrode active material including lithium manganese-based oxide and method for producing the same
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Application No.: US16494503Application Date: 2018-09-07
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Publication No.: US11600820B2Publication Date: 2023-03-07
- Inventor: Gi Beom Han , Jintae Hwang , Wang Mo Jung , Min Kyu You , Chi Ho Jo , Sungbin Park , Inseong Ju , Hyuck Hur , Younguk Park , Tae Gu Yoo
- Applicant: LG Chem, Ltd.
- Applicant Address: KR Seoul
- Assignee: LG Chem, Ltd.
- Current Assignee: LG Chem, Ltd.
- Current Assignee Address: KR Seoul
- Agency: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- Priority: KR10-2017-0124381 20170926,KR10-2018-0091426 20180806
- International Application: PCT/KR2018/010473 WO 20180907
- International Announcement: WO2019/066298 WO 20190404
- Main IPC: H01M4/505
- IPC: H01M4/505 ; H01M4/36 ; H01M4/525 ; H01M4/62 ; H01M10/0525 ; H01M10/0562 ; H01M4/02
Abstract:
A positive electrode active material contains a lithium-rich lithium manganese-based oxide, wherein the lithium manganese-based oxide has a composition of the following chemical formula (1), and wherein a lithium ion conductive glass-ceramic solid electrolyte layer containing at least one selected from the group consisting of thio-LISICON(thio-lithium super ionic conductor), LISICON(lithium super ionic conductor), Li2S—SiS2—Li4SiO4, and Li2S—SiS2—P2S5—Lil is formed on the surface of the lithium manganese-based oxide particle: Li1−xMyMn1−x−yO2−zQz (1) wherein, 0
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