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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.:

US 6268088 B1

PDFFull Text
Date of Patent:
Jul. 31, 2001

Filed:

Jan. 17, 2000

Gel polymer electrolyte of vinyl acetate

Applicant:
Inventors:

Boo-Keun Oh, Taijeon, KR;

Young-Roak Kim, Taejeon, KR;

Dong-Won Kim, Taejeon, KR;

Chang-Woo Baek, Taegu, KR;

Assignee:

Cheil Industries, South Korea, KR;

Attorney:

Woodcock Washburn Kurtz Mackiewicz & Norris LLP

Primary Examiner:

Gregory Delcotto

Assistant Examiner:

Gregory E Webb

Int. Cl.
CPC ...
H01M 4/36 ; H01M 4/40 ;
U.S. Cl.
CPC ...
H01M 4/36 ; H01M 4/40 ;
Abstract

A gel polymer electrolyte according to the present invention comprises a polymer selected from the group consisting of vinyl acetate copolymer, poly(ethylene/vinylacetate/carbon oxide: EVACM), and poly(ethylene/vinylacetate/maleic acid anhydride: EVAMA); an inorganic filler; and a liquid electrolyte that a lithium salt is dissolved in an aprotic solvent. It is preferable that the polymer material in a gel polymer electrolyte according to the present invention is in the range of 20 to 30% by weight, the inorganic material filler is in the range of 5 to 20% by weight, and the liquid electrolyte is in the range of 60 to 80 % by weight. As a specific functional group which has a high compatibility with a liquid electrolyte in the present invention is contained in the polymer material, a lithium ion becomes to move with ease in electrolyte, and the ionic conductivity is over 0.5 mS/cm which is the demand level of a gel polymer electrolyte. Also, it provides the gel polymer electrolyte material with a high film formability, a good property of containing an electrolyte, a good adhesion, and a good mechanical strength.

Find Patent Forward Citations

Oh, Boo-Keun. (2001). Gel polymer electrolyte of vinyl acetate (U.S. Patent No. 6268088). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6268088

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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