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. 30, 2019
Filed:
Nov. 03, 2015
Samsung Sdi Co., Ltd., Yongin-si, Gyeonggi-do, KR;
MK Electron Co,. Ltd., Yongin-si, Gyeonggi-do, KR;
Soonsung Suh, Yongin-si, KR;
Jaehyuk Kim, Yongin-si, KR;
Jongsoo Cho, Seoul, KR;
Soonho Hong, Yongin-si, KR;
Chansoon Kang, Seoul, KR;
Kyuhwan Oh, Seoul, KR;
Samsung SDI Co., Ltd., Gyeonggi-Do, KR;
MK Electron Co., Ltd., Gyeonggi-Do, KR;
SNU R&DB Foundation, Seoul National University, Seoul, KR;
Abstract
Provided is a negative active material for a secondary battery which provides high capacity, high efficiency charging-discharging characteristics. The negative active material includes: a silicon single phase; and a silicon-metal alloy phase interfaced with the silicon single phase and surrounding the silicon single phase, wherein an X-ray diffraction spectrum of the negative active material has first and second peaks that are originated from the silicon-metal alloy phase, and the first peak is located at 49.1+/−0.5 degrees (°) and the second peak is located at 38.0+/−0.5 degrees (°), and a diffraction intensity of the first peak is 2 or less times that of to the second peak.