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:
Nov. 28, 2017
Filed:
Apr. 27, 2012
Masahiro Morita, Nisshin, JP;
Yutaka Oyama, Toyota, JP;
Takahiro Tsubouchi, Miyoshi, JP;
Atsushi Saito, Nagoya, JP;
Yukihiro Okada, Shijyonawate, JP;
Masahiro Morita, Nisshin, JP;
Yutaka Oyama, Toyota, JP;
Takahiro Tsubouchi, Miyoshi, JP;
Atsushi Saito, Nagoya, JP;
Yukihiro Okada, Shijyonawate, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Abstract
The present invention provides a non-aqueous electrode secondary battery supplied with a non-aqueous electrolyte comprising an overcharge additive. The positive electrode material layer constituting the positive electrode in the non-aqueous electrolyte secondary battery is characterized by having a differential pore volume peak A as well as a peak B located on the smaller pore diameter side than the peak A in a pore diameter range of 0.05 μm to 2 μm in a pore size distribution curve measured by a mercury porosimeter, wherein the pore size distribution curve has a minimum C corresponding to a minimum differential pore volume between the peak A and the peak B, such that a ratio (X/X) of the minimum C's differential pore volume Xto a differential pore volume X, which is the larger between the peak A's differential pore volume Xand the peak B's differential pore volume Xis 0.6 or larger.