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. 21, 2009
Filed:
Sep. 03, 2004
Duck-chul Hwang, Suwon-si, KR;
Seung-sik Hwang, Seongnam-si, KR;
Sang-mock Lee, Suwon-si, KR;
Chung-kun Cho, Suwon-si, KR;
Yun-suk Choi, Cheonan-si, KR;
Duck-Chul Hwang, Suwon-si, KR;
Seung-Sik Hwang, Seongnam-si, KR;
Sang-Mock Lee, Suwon-si, KR;
Chung-Kun Cho, Suwon-si, KR;
Yun-Suk Choi, Cheonan-si, KR;
Samsung SDI Co., Ltd., Suwon-si, KR;
Abstract
A rechargeable lithium battery includes a positive electrode having a positive active material to reversibly intercalate and deintercalate lithium ions, a negative electrode having a negative active material, and an electrolyte, wherein an arithmetic mean Ra of a surface roughness of the positive electrode is 155 to 419 nm, and an arithmetic mean Ra of a surface roughness of the negative electrode is 183 to 1159 nm after the rechargeable lithium battery is charged and discharged.