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:
May. 10, 2005
Filed:
Mar. 25, 2002
Hironori Yamamoto, Tokyo, JP;
Jiro Iriyama, Tokyo, JP;
Tamaki Miura, Tokyo, JP;
Mitsuhiro Mori, Tokyo, JP;
Koji Utsugi, Tokyo, JP;
Hironori Yamamoto, Tokyo, JP;
Jiro Iriyama, Tokyo, JP;
Tamaki Miura, Tokyo, JP;
Mitsuhiro Mori, Tokyo, JP;
Koji Utsugi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
This invention relates to an anode for a secondary battery capable of occluding and releasing lithium ions, the anode having a multi-layer structure comprising: a first layer containing carbon as a main component; and a second layer as a main component containing a lithium-occluding material film, the film capable of occluding lithium more than a theoretical lithium-occlusion capacity for carbon, as well as a secondary battery using the anode. This invention can provide a secondary battery with a substantially improved battery capacity in a range where the battery is actually used, while having a higher charge-discharge efficiency and good cycle properties.