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. 12, 2019
Filed:
Nov. 21, 2016
Sumitomo Chemical Company, Limited, Tokyo, JP;
Ichiro Arise, Osaka, JP;
Chikara Murakami, Osaka, JP;
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Abstract
Provided as a nonaqueous electrolyte secondary battery insulating porous layer that allows a nonaqueous electrolyte secondary battery to have an improved discharge output characteristic is a nonaqueous electrolyte secondary battery insulating porous layer containing fine particles of a metal salt having a Lewis acid peak area within a range of not less than 0.2 gand not more than 3.6 gper unit weight, the Lewis acid peak area being measured by an infrared spectroscopy-based acid nature evaluation method for a solid surface, the Lewis acid peak area of a metal salt per unit weight being defined as a value resulting from dividing (i) the area of a peak present in a region of 1447 cmto 1460 cmof an infrared absorption spectrum measured of a sample on which pyridine was adsorbed and from which the pyridine has then been desorbed by (ii) the weight of the metal salt.