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:
Jul. 16, 2019
Filed:
Oct. 31, 2014
Lg Chem, Ltd., Seoul, KR;
LG Chem, Ltd., , KR;
Abstract
Provided are an anode active material for a lithium secondary battery including a silicon-based composite formed of silicon (Si) and crystalline SiO, wherein the Si and crystalline SiOare in the form of grains, a method of preparing the same, and a lithium secondary battery including the anode active material. Since an anode active material according to an embodiment of the present invention includes a silicon-based composite including Si and SiOin a grain state and the SiOis crystalline SiO, the reaction between amorphous SiOand lithium in an electrolyte may be excluded. Thus, since the crystalline SiOis included in the silicon-based composite, excellent capacity characteristics of a secondary battery may be maintained and initial efficiency and life characteristics may be improved when the silicon-based composite is used as an anode active material.