Invention Grant
- Patent Title: Porous silicon based negative electrode active material, method for manufacturing the same, and rechargeable lithium battery including the same
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Application No.: US15811816Application Date: 2017-11-14
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Publication No.: US10862116B2Publication Date: 2020-12-08
- Inventor: Soojin Park , Sin Ho Choi , Ji Hyun Yoon , Byoung Man Bang
- Applicant: UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) , SJ MATERIALS CO., LTD
- Applicant Address: KR Ulsan KR Ulsan
- Assignee: UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY),SJ MATERIALS CO., LTD.
- Current Assignee: UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY),SJ MATERIALS CO., LTD.
- Current Assignee Address: KR Ulsan KR Ulsan
- Agency: Lex IP Meister, PLLC
- Priority: KR10-2013-0071793 20130621
- Main IPC: H01M4/38
- IPC: H01M4/38 ; H01M4/86 ; H01M10/0525 ; H01M4/04 ; H01M4/36 ; C01B33/023 ; H01M4/13 ; H01M4/62
Abstract:
The present invention relates to a method of preparing a porous silicon-based negative electrode active material comprising: mixing a porous silica (SiO2) and an aluminum powder; oxidizing all or part of the aluminum powder as an aluminum oxide while at the same time reducing all or part of the porous silica as a porous silicon (Si) by heat-treating a mixture of the porous silica with the aluminum powder, a negative electrode active material, and a rechargeable lithium battery including the same.
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