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:
Jan. 24, 2012
Filed:
May. 04, 2011
Won Chull Han, Yongin-si, KR;
Chan Jung Kim, Yongin-si, KR;
Jae Woong Kim, Yongin-si, KR;
Jun Ho Kim, Yongin-si, KR;
Jin Hee Kim, Yongin-si, KR;
Ha Young Lee, Yongin-si, KR;
Won Chull Han, Yongin-si, KR;
Chan Jung Kim, Yongin-si, KR;
Jae Woong Kim, Yongin-si, KR;
Jun Ho Kim, Yongin-si, KR;
Jin Hee Kim, Yongin-si, KR;
Ha Young Lee, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
A lithium ion secondary battery is provided. The lithium ion secondary battery generally comprises an electrode assembly, a container for accommodating the electrode assembly; and an electrolyte. The electrode assembly comprises two electrodes having opposite polarities and a separator. The separator comprises a porous membrane comprising clusters of ceramic particles. The porous membrane is formed by bonding the particle clusters with a binder. Each particle cluster is formed either by sintering or by dissolving and re-crystallizing all or a portion of the ceramic particles. The ceramic particles comprise a ceramic material having a band gap. Each particle cluster may have the shape of a grape bunch or a lamina, and may be formed by laminating scale or flake shaped ceramic particles.