Toyota Jidosha Kabushiki Kaisha

Nagoya University

Zeon Corporation

Tokai National Higher Education and Research System

Haruka Tanaka

Atsushi Noro

Yushu Matsushita

Takato Kajita

Naoki Nakamura

Sadaharu Hashimoto

Kousuke Isobe

The present invention provides a block copolymer composition comprising a block copolymer B formed by introducing a functional group capable of forming a non-covalent bond into a block copolymer A including at least one aromatic vinyl polymer block and at least one conjugated diene polymer block, wherein: the block copolymer B includes an ionic group as the functional group capable of forming a non-covalent bond.

Block copolymer composition including ionic group, and film

A proton conducting film includes a polymer having a first part and a second part which are connected by a covalent bond and a plasticizer. The first parts aggregate with each other to form a domain at an operation temperature of the proton conducting film, and the second part crosslinks the domains. The second part has a proton accepting group, and the plasticizer contains a proton donating compound having a pKa of 2.5 or less, and thus the plasticizer penetrates into the second part, and a glass transition temperature of the polymer is lowered compared to when the plasticizer is not included.

Proton conducting film having crosslinked structure and fuel cell

A proton-conductive membrane is provided, which exhibits high proton conductivity even in an anhydrous environment. The proton-conductive membrane includes a crosslinked polymer and a plasticizer, wherein the crosslinked polymer includes a proton acceptor group in an amount equal to not less than 10 mol % of repeating units constituting the crosslinked polymer, the plasticizer includes a proton donor compound having a pKa value of not more than 2.5, and the plasticizer is a viscoelastic solid in a temperature range of 50&#xb0; C. to 120&#xb0; C.

Proton-conductive membrane and fuel cell

Growing community of inventors

Nagoya, Japan

Haruka Tanaka