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:
Apr. 28, 2020
Filed:
Oct. 01, 2015
Lg Chem, Ltd., Seoul, KR;
Rae Hwan Jo, Daejeon, KR;
Ju Ho Chung, Daejeon, KR;
Eun Kyung Kim, Daejeon, KR;
Yong Ju Lee, Daejeon, KR;
Seung Youn Choi, Daejeon, KR;
Hyun Chul Kim, Daejeon, KR;
Jung Hyun Choi, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
Provided are a negative electrode active material for a lithium secondary battery and a method of preparing the same, wherein since the negative electrode active material includes porous polycrystalline silicon and the porous polycrystalline silicon includes pores disposed at grain boundaries, the negative electrode active material may exhibit a buffering action by internally absorbing changes in volume of the active material during charge and discharge. As a result, lifetime characteristics of a negative electrode and a battery may be improved.