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. 27, 2016
Filed:
Apr. 10, 2009
Koji Takahata, Toyota, JP;
Koji Kawamoto, Aichi-ken, JP;
Kazuhisa Takeda, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Abstract
A lithium secondary battery () provided by the present invention includes a current interruption mechanism () operated by a rise in internal pressure. A positive electrode () of this battery () has a positive electrode mixture layer containing lithium carbonate, a conductive material and a positive electrode active material consisting primarily of a lithium-transition metal oxide. The lithium carbonate is disposed on the surface of the conductive material. Such a positive electrode mixture layer can preferably be fabricated using a positive electrode mixture composition containing a positive electrode active material and a composite conductive material comprising lithium carbonate retained on the surface of a conductive material.