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. 10, 2007
Filed:
Jul. 31, 2002
Jiro Iriyama, Tokyo, JP;
Hironori Yamamoto, Tokyo, JP;
Tamaki Miura, Tokyo, JP;
Koji Utsugi, Tokyo, JP;
Masato Shirakata, Tokyo, JP;
Mitsuhiro Mori, Tokyo, JP;
Jiro Iriyama, Tokyo, JP;
Hironori Yamamoto, Tokyo, JP;
Tamaki Miura, Tokyo, JP;
Koji Utsugi, Tokyo, JP;
Masato Shirakata, Tokyo, JP;
Mitsuhiro Mori, Tokyo, JP;
NEC Corporation, Minato-ku, Tokyo, JP;
Abstract
An anode for a secondary battery capable of inserting and extracting a lithium ion having a multi-layered structure including a first anode layer containing carbon as a main component; a second anode layer made of a film-like material through which a lithium component passes; and a third anode layer containing lithium and/or a lithium-containing compound as a main component. The battery capacity of the lithium ion battery is substantially increased while the higher charge-discharge efficiency and the stable cycle performance are maintained.