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:
Jun. 05, 2018
Filed:
Jul. 22, 2011
Xin LI, Beijing, CN;
Jianhua LI, Tianjin, CN;
Wei Chen, Tianjin, CN;
Yongjun Jiao, Tianjin, CN;
Long LI, Tianjin, CN;
Xinjian Deng, Tianjin, CN;
Xin Li, Beijing, CN;
Jianhua Li, Tianjin, CN;
Wei Chen, Tianjin, CN;
Yongjun Jiao, Tianjin, CN;
Long Li, Tianjin, CN;
Xinjian Deng, Tianjin, CN;
TIANJIN DG MEMBRANE CO., LTD., Tianjin, CN;
Abstract
The present invention relates to a composite nano microporous diaphragm for use in lithium ion cells using polyolefin modified with post-crosslinked rubber and manufacturing method thereof. The microporous diaphragm at least comprises a nano microporous diaphragm A layer with a chemical gel content of more than 20%, the microscopic structure thereof is designed to be the rubber material that has been evenly dispersed and has subjected to a post-crosslinking treatment in polyolefin nano microfiber matrix, forming a nano microporous diaphragm of rubber-plastic composite. The nano microporous diaphragm with high strength, thermal cutoff, high temperature resistance, as well as good liquid absorption and swelling and compression elasticity can be applied to lithium ion power cells with high safety and long cycling life.