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:
Aug. 17, 2004
Filed:
Oct. 24, 2001
Mikio Okada, Kyoto, JP;
Hideo Yasuda, Kyoto, JP;
Japan Storage Battery Co., Ltd., Kyoto, JP;
Abstract
The non-aqueous electrolyte secondary battery of the present invention comprises, e.g., a positive electrode , a negative electrode , a polymer membrane containing carbon powder or the like, and a separating membrane layer for preventing shortcircuiting. A carbon powder, silicon powder, tin powder or aluminum powder contained in the polymer membrane containing carbon powder or the like absorbs as a lithium-absorbing material metallic lithium powders or metallic lithium dendrite which has been produced from the negative electrode due to charge or discharge and takes no part in charge or discharge. This lithium-absorbing material is less reactive than the metallic lithium powders or metallic lithium dendrite and thus enhances the safety of the battery and controls shortcircuiting between the positive electrode and the negative electrode due to metallic lithium dendrite, making it possible to drastically improve charge and discharge cycle life performance.