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:
Feb. 23, 2021
Filed:
Aug. 27, 2015
Tokyo Ohko Kogyo Co., Ltd., Kanagawa, JP;
Tokyo Metropolitan University, Tokyo, JP;
3dom Inc., Kanagawa, JP;
Hiroyoshi Sago, Kanagawa, JP;
Kiyoshi Kanamura, Tokyo, JP;
Hirokazu Munakata, Tokyo, JP;
Kazuhiro Imazawa, Kanagawa, JP;
TOKYO OHKA KOGYO CO., LTD., Kanagawa, JP;
TOKYO METROPOLITAN UNIVERSITY, Tokyo, JP;
3DOM INC, Kanagawa, JP;
Abstract
Provided is a separator which can make the electric field on the surface of a negative electrode for a metal secondary battery homogeneous to thereby prevent the formation of dendrites. A porous separator for metal secondary batteries, which has a polymer electrolyte layer formed on the surface layer of at least one main surface of a porous polyimide film. It is preferred that the polymer electrolyte layer is composed of both a polymer electrolyte material which is supported on at least one main surface of the porous polyimide film and a polymer electrolyte material which is supported in voids in a layered region that extends from the main surface.