The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2017
Filed:
Aug. 31, 2012
Soojin Park, Ulsan, KR;
Sin Ho Choi, Busan, KR;
Byoung Man Bang, Gyeongsan-si, KR;
Jaephil Cho, Ulsan, KR;
Soojin Park, Ulsan, KR;
Sin Ho Choi, Busan, KR;
Byoung Man Bang, Gyeongsan-si, KR;
Jaephil Cho, Ulsan, KR;
UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY), Ulsan, KR;
SJ MATERIALS CO., LTD, Ulsan, KR;
Abstract
The present invention relates to a method for preparing a silicon-based negative electrode active material, a negative electrode active material for a lithium secondary battery, and a lithium secondary battery comprising the same. More particularly, the method for preparing the silicon-based negative electrode active material comprises: preparing a porous silica (SiO) and a thin metal film; coating the porous silica onto the thin metal film; reducing the porous silica to a porous silicon by performing heat-treatment of the thin metal film and the porous silica; and obtaining the porous silicon.