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:
Dec. 06, 2016
Filed:
Sep. 05, 2011
Tomonobu Tsujikawa, Tokyo, JP;
Masayasu Arakawa, Tokyo, JP;
Kenji Kurita, Tokyo, JP;
Masayuki Terada, Tokyo, JP;
Tomonobu Tsujikawa, Tokyo, JP;
Masayasu Arakawa, Tokyo, JP;
Kenji Kurita, Tokyo, JP;
Masayuki Terada, Tokyo, JP;
NTT FACILITIES, INC., Tokyo, JP;
HITACHI CHEMICAL COMPANY, LTD., Tokyo, JP;
Abstract
A non-aqueous electrolyte, lithium-ion secondary battery includes an electrode group in which positive and negative electrode plates are wound via a separator accommodated into a battery container into which a non-aqueous electrolyte is injected. In the positive electrode plate, a positive electrode mixture layer including a lithium transition metal complex oxide is formed at both surfaces of an aluminum foil. A flame retardant layer containing a phosphazene compound as a flame retardant and a polyethylene oxide of a binder having ionic conductivity is formed at a surface of the positive electrode mixture layer. In the negative electrode plate, a negative electrode mixture layer including a carbon material of a negative electrode active material is formed at both surfaces of rolled copper foil. Ionic conductivity is secured by the polyethylene oxide, and the phosphazene compound decomposes when a battery temperature rises due to battery abnormality.