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:
Dec. 11, 2018
Filed:
Oct. 29, 2014
Lg Chem, Ltd., Seoul, KR;
Yong Ju Lee, Daejeon, KR;
Jun Sik Ham, Seongnam-Si, KR;
Sung Man Lee, Chuncheon-Si, KR;
Rae Hwan Jo, Daejeon, KR;
Eun Kyung Kim, Daejeon, KR;
Je Young Kim, Daejeon, KR;
Hong Kyu Park, Daejeon, KR;
Jung Woo Yoo, Daejeon, KR;
Mi Rim Lee, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
Provided are a porous silicon-based anode active material including a core part including silicon (Si) and MSi, and a shell part including Si and a plurality of pores on the core part, wherein, in the MSi, M is at least one element selected from the group consisting of Group 2A, 3A, and 4A elements and transition metals, 1≤x≤4, and 1≤y≤4, and a method of preparing the porous silicon-based anode active material. According to an embodiment of the present invention, capacity characteristics and lifetime characteristic of a lithium secondary battery may be improved by minimizing the volume expansion of an anode active material during charge and discharge.