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. 15, 2007
Filed:
Oct. 10, 2003
Naoya Nakanishi, Kobe, JP;
Kouichi Satoh, Kobe, JP;
Hideki Kitao, Kobe, JP;
Hiroyuki Akita, Kobe, JP;
Atsuhiro Funahashi, Toyonaka, JP;
Toshiyuki Nohma, Kobe, JP;
Naoya Nakanishi, Kobe, JP;
Kouichi Satoh, Kobe, JP;
Hideki Kitao, Kobe, JP;
Hiroyuki Akita, Kobe, JP;
Atsuhiro Funahashi, Toyonaka, JP;
Toshiyuki Nohma, Kobe, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A non-aqueous electrolyte secondary battery is provided with a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte, wherein positive electrode active material is a mixture of lithium-manganese composite oxide having spinel structure represented by a general formula LiMnO(wherein a relationship 0≦z≦0.2 is satisfied) and lithium-transition metal composite oxide represented by the general formula LiNiCoMnO(wherein the relationships 0.5<x+y<1.0 and 0.1<y<0.6 are satisfied), and negative electrode active material is graphite coated with low crystalline carbon where whole or a part of a surface of first graphite material as a substrate is coated with second carbon material which is lower in crystallinity compared with the first graphite material.