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:
Mar. 15, 2022
Filed:
May. 31, 2017
Tokyo Institute of Technology, Tokyo, JP;
Teijin Limited, Osaka, JP;
Kanagawa Institute of Industrial Science and Technology, Ebina, JP;
Takeo Yamaguchi, Tokyo, JP;
Yuhei Oshiba, Tokyo, JP;
Hidenori Ohashi, Tokyo, JP;
Jin Tomatsu, Tokyo, JP;
Koji Furuya, Osaka, JP;
Takao Ohno, Osaka, JP;
Mami Nanbu, Osaka, JP;
TOKYO INSTITUTE OF TECHNOLOGY, Tokyo, JP;
TEIJIN LIMITED, Osaka, JP;
KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY, Ebina, JP;
Abstract
To provide an electrolyte membrane that exhibits high proton conductivity even at low humidity, the electrolyte membrane includes a composite membrane including: a microporous polyolefin membrane that has an average pore diameter of 1 to 1000 nm and a porosity of 50 to 90% and that can be impregnated with a solvent having a surface free energy of 28 mJ/mor more, and an electrolyte containing a perfluorosulfonic acid polymer having an EW of 250 to 850 loaded into the pores of the microporous polyolefin membrane, wherein the membrane thickness of the composite membrane is 1 to 20 μm.