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. 19, 2013
Filed:
Sep. 17, 2008
Goo-jin Jeong, Suwon-si, KR;
Sang-min Lee, Suwon-si, KR;
Wan-uk Choi, Suwon-si, KR;
Hun-joon Sohn, Seoul, KR;
Goo-Jin Jeong, Suwon-si, KR;
Sang-Min Lee, Suwon-si, KR;
Wan-Uk Choi, Suwon-si, KR;
Hun-Joon Sohn, Seoul, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Seoul National University Industry Foundation, Seoul, KR;
Abstract
An negative active material for a rechargeable lithium battery includes a nano-composite including a Si phase, a SiOphase, and a metal oxide phase of formulation MO, where M is a metal with an oxidation number x, a free energy of oxygen-bond formation ranging from −900 kJ/mol to −2000 kJ/mol, x, and x·y=2. The negative active material for a rechargeable lithium battery according to the present invention can improve initial capacity, initial efficiency, and cycle-life characteristics by suppressing its initial irreversible reaction.