- Patent Title: Pre-lithiation using lithium metal and inorganic composite layer
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Application No.: US16541737Application Date: 2019-08-15
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Publication No.: US11316156B2Publication Date: 2022-04-26
- Inventor: Sang Wook Woo , Eun Kyung Kim , Yoon Ah Kang , Jun Hyuk Song , Oh Byong Chae
- 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: KR10-2017-0102252 20170811
- Main IPC: H01M4/485
- IPC: H01M4/485 ; H01M4/04 ; H01M4/02

Abstract:
A method of pre-lithiating a negative electrode for a secondary battery, including: dispersing a lithium metal powder, an inorganic material powder and a binder in a solvent to prepare a mixed solution; and applying the mixed solution to the negative electrode to form a lithium metal-inorganic composite layer on the negative electrode, thereby forming the pre-lithiated negative electrode. Also, a method for pre-lithiating a negative electrode having a high capacity by a simple process. Further, a negative electrode for a secondary battery manufactured through the pre-lithiation method provided in the present invention has an improved initial irreversibility, and secondary batteries manufactured using such a negative electrode for a secondary battery have excellent charge/discharge efficiency.
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