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:
Mar. 18, 2025
Filed:
Nov. 23, 2021
Tera Technos Co, Ltd., Daejeon, KR;
Jae Woo Lee, Sejong-si, KR;
Jin Gee Park, Daegu, KR;
Sun Ho Choi, Sejong-si, KR;
Jung Hoon Cheon, Sejong-si, KR;
Sung Soo Kim, Daejeon, KR;
Sichen Du, Täby, SE;
Tera Technos Co., Ltd., Daejeon, KR;
Abstract
A negative electrode material for a secondary battery includes a matrix containing silicon oxide, a composite oxide of one or more doping elements selected from the group consisting of an alkali metal, an alkaline earth metal, and a post-transition metal, and silicon, or a mixture thereof; and silicon nanoparticles dispersed and embedded in the matrix; wherein a hardness and a Young's modulus measured by a nanoindentation test are 4.0 GPa or more and 40 GPa or more, respectively, and in an X-ray diffraction pattern using a CuKα ray, a ratio (A/A) of an area (A) of a first peak present in a region where a diffraction angleθ is 10° to 27.4° to an area (A) of a second peak present in a region where the diffraction angleθ is 28±0.5° is 0.8 to 6.