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 8034490 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 11, 2011

Filed:

May. 26, 2009
Applicants:

Takayuki Araki, Settsu, JP;

Meiten Koh, Settsu, JP;

Inventors:

Takayuki Araki, Settsu, JP;

Meiten Koh, Settsu, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 10/40 (2006.01);
U.S. Cl.
CPC ...
Abstract

There is provided a fluorine-containing polymer solid electrolyte which has an excellent ion-conducting property, is high in oxidation resistance, is stable electrochemically and thermally, has sufficient strength and is applicable to various electrochemical devices. The electrolyte comprises (I) a non-crystalline fluorine-containing polymer which has a polar nonionic functional group and has, in a side chain of the polymer molecule, a structural unit D having 1 to 4 units derived from a fluorine-containing ether in the form of continuous chain, (II) an electrolytic compound and as case demands, (III) a solvent. The electrolyte has an ionic conductivity of from 10to 10S/cm measured at 25° C. by an alternating current complex impedance method, and is useful for various electrochemical devices.


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