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Title:
SURFACE-MODIFIED NANOFIBERS, ELECTROLYTE MEMBRANE, METHOD FOR PRODUCING ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE ASSEMBLY AND SOLID POLYMER FUEL CELL
Document Type and Number:
WIPO Patent Application WO/2018/038049
Kind Code:
A1
Abstract:
[Problem] To develop novel nanofibers that constitute a composite electrolyte membrane and provide an electrolyte membrane which has sufficient ion conductivity (proton conductivity) and gas barrier properties even if formed into a thin membrane of 30 μm or less. [Solution] Surface-modified nanofibers which are obtained by modifying the surfaces of polymer nanofibers with an acidic substance and a basic substance, and which are characterized in that the acidic substance has proton conductivity and the basic substance increases the modification amount of the acidic substance; an electrolyte membrane which contains these nanofibers; and a method for producing a composite membrane, which comprises a step for forming a nonwoven fabric formed of polymer nanofibers, a step for subjecting the nonwoven fabric to a surface modification treatment, a step for integrating the surface-modified nanofibers and a matrix polymer by filling the pores of the nonwoven fabric with the matrix polymer, and a step for subjecting an electrolyte membrane containing the surface-modified nanofibers to a post-treatment.

Inventors:
KAWAKAMI Hiroyoshi (Minami-osawa Campus 1-1 Minami-osawa, Hachioji-sh, Tokyo 97, 〒1920397, JP)
TANAKA Manabu (Minami-osawa Campus 1-1 Minami-osawa, Hachioji-sh, Tokyo 97, 〒1920397, JP)
MAKINOUCHI Takahito (Minami-osawa Campus 1-1 Minami-osawa, Hachioji-sh, Tokyo 97, 〒1920397, JP)
Application Number:
JP2017/029772
Publication Date:
March 01, 2018
Filing Date:
August 21, 2017
Export Citation:
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Assignee:
TOKYO METROPOLITAN UNIVERSITY (2-3-1, Nishi-Shinjuku Shinjuku-ku Tokyo, 26, 〒1630926, JP)
International Classes:
D06M13/292; D04H1/728; D06M15/21; H01B1/06; H01M8/02; H01M8/10
Attorney, Agent or Firm:
MATSUYAMA Yuichiro (4B Unizo Shinkawa 1-chome Bldg, 1-2-14 Shinkawa Chuo-k, Tokyo 33, 〒1040033, JP)
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