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:
Feb. 12, 2019
Filed:
Dec. 02, 2014
Lg Chem, Ltd., Seoul, KR;
Sj Materials Co., Ltd., Ulsan, KR;
Mi Rim Lee, Daejeon, KR;
Jung Woo Yoo, Daejeon, KR;
Eun Kyung Kim, Daejeon, KR;
Yong Ju Lee, Daejeon, KR;
Han Ho Lee, Seoul, KR;
Ji Hyun Yoon, Ulsan, KR;
Byoung Man Bang, Gyeongsangbuk-do, KR;
Chang Rae Lee, Ulsan, KR;
Il Kyo Jeong, Ulsan, KR;
Mi Kyeong Lee, Gyeongsangbuk-do, KR;
LG Chem Ltd., , KR;
SJ Materials Co., Ltd., , KR;
Abstract
Provided are a porous silicon-based anode active material including porous SiOparticles (0≤x<2) having surfaces coated with an oxide layer, a method of preparing the same, and a lithium secondary battery including the porous silicon-based anode active material. Since the anode active material includes an oxide layer formed on the porous SiOparticles (0≤x<2), a reactivity between the anode active material and an electrolyte solution may be reduced and, as a result, an electrical short circuit in an electrode may be minimized. Also, since a plurality of pores is included in surfaces or the surfaces and inside of the SiOparticles, a thickness change rate of the electrode generated during charge and discharge of a secondary battery may be reduced and lifetime characteristics may be improved.