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:
Mar. 12, 2013
Filed:
Jun. 21, 2011
Toshikazu Hamamoto, Yamaguchi, JP;
Akira Ueki, Yamaguchi, JP;
Koji Abe, Yamaguchi, JP;
Kazuhiro Miyoshi, Yamaguchi, JP;
Toshikazu Hamamoto, Yamaguchi, JP;
Akira Ueki, Yamaguchi, JP;
Koji Abe, Yamaguchi, JP;
Kazuhiro Miyoshi, Yamaguchi, JP;
Ube Industries, Ltd., Ube-shi, Yamaguchi, JP;
Abstract
The sudden generation of heat being frequently caused in the case of the overcharge of a lithium secondary cell which have a positive electrode comprising a composite metal oxide of lithium and cobalt or a composite metal oxide of lithium and nickel, a negative electrode comprising metallic lithium, a lithium alloy or a material capable of occluding and releasing lithium, and a nonaqueous electrolyte solution comprising a nonaqueous solvent and an electrolyte dissolved therein can be efficiently prevented by the addition, to the nonaqueous electrolyte solution, of an organic compound which, when the lithium secondary cell is overcharged, decomposes into a decomposition product capable of dissolving out the cobalt or nickel contained in the positive electrode and depositing it ion the negative electrode (for example, a tert-alkylbenzene derivative).