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. 24, 2010
Filed:
Jul. 03, 2003
Shigeki Yamate, Kyoto, JP;
Shigeki Yamate, Kyoto, JP;
GS Yuasa Corporation, Kyoto, JP;
Abstract
The present invention provides a non-aqueous electrolyte secondary battery having high energy density and satisfactory cycle performance by using an alloy comprising Ni and Sn as a negative active material. The non-aqueous electrolyte secondary battery comprises a negative electrode with a composite layer containing a negative active material, a positive electrode and a non-aqueous electrolyte. The negative active material consists of an alloy containing 5 to 25 mass % of nickel and 75 to 95 mass % of tin and the alloy contains SnNiphase and Sn phase. It is preferable that the content ratio of SnNiphase and Sn phase in the alloy be 0.2≦Z≦3, when mis the mass of SnNiphase, mis the mass of said Sn phase, and Z=m/m; and that the composite layer contain carbon material.