University of Yamanashi

Takahata Precision Co., Ltd.

Daihatsu Motor Company, Ltd.

Takahata Precision Japan Co., Ltd.

Kaneka Corporation

Kenji Miyatake

Hiroyuki Uchida

Masahiro Watanabe

Naoki Yokota

Koichiro Asazawa

Junpei Miyake

Manai Shimada

Hideaki Ono

Eriko Nishino

Aoi Takano

Natsumi Yoshimura

Hisao Yamashita

Takeshi Kato

Katsuya Nagase

Yui Kuwabara

Makoto Uchida

Takashi Mochizuki

Yousuke Konno

Jyunpei Miyake

Taro Kimura

Takahiro Miyahara

Provided are an anion exchange resin being capable of producing an electrolyte membrane, a binder for forming an electrode catalyst layer and a battery electrode catalyst layer, which have improved electrical properties and chemical properties. For example, used is an anion exchange resin which has a hydrophobic unit being composed of bisphenol AF residues repeated via carbon-carbon bond and a hydrophilic unit being composed of hydrophilic groups repeated via carbon-carbon bond, in which the hydrophilic group is formed by connecting an anion exchange group to a fluorene backbone via a divalent saturated hydrocarbon group, and in which the hydrophobic unit and the hydrophilic unit are connected via carbon-carbon bond.

Anion exchange resin, electrolyte membrane, binder for forming electrode catalyst layer, fuel cell electrode catalyst layer and fuel cell

Provided are an anion exchange resin being capable of producing an electrolyte membrane and the like, which have improved chemical properties (durability). For example, used is an anion exchange resin comprising a hydrophobic unit being composed of a plurality of divalent hydrophobic groups repeated via carbon-carbon bond, the divalent hydrophobic group having a plurality of aromatic rings which are connected to each other via a divalent fluorine-containing group; and a hydrophilic unit being composed of a plurality of hydrophilic groups repeated via carbon-carbon bond, the hydrophilic groups being composed of a plurality of aromatic rings which are connected to each other via a divalent hydrocarbon group and/or carbon-carbon bond, and the hydrophilic groups containing an anion exchange group-containing group including a quaternary ammonium salt having a piperidine ring, and wherein the hydrophobic unit and the hydrophilic unit are connected via carbon-carbon bond.

Provided are an anion exchange resin being capable of producing an electrolyte membrane for a fuel cell, a binder for forming an electrode catalyst layer and a fuel cell electrode catalyst layer, which have an improved physical property (anion conductivity); a method for producing thereof; an electrolyte membrane for a fuel cell, a binder for forming an electrode catalyst layer and a fuel cell electrode catalyst layer produced from the anion exchange resin; and a fuel cell having the electrolyte membrane or the electrode catalyst layer. For example, the anion exchange resin is obtained by reacting a hydrophobic monomer with an aminoalkyl group-containing monomer, in which the hydrophobic monomer is composed of one aromatic ring or a plurality of aromatic rings to which two halogen atoms are bonded, and the aminoalkyl group-containing monomer is composed of one aromatic ring or a plurality of aromatic rings to which two halogen atoms are bonded and an aminoalkyl group is introduced; and by quaternizing the amino group. In the anion exchange resin, a divalent hydrophobic group formed by the residue of the hydrophobic monomer, and a divalent hydrophilic group formed by the residue of the quaternized aminoalkyl group-containing monomer are bonded via direct bond.

Anion exchange resin, method for producing thereof, electrolyte membrane for fuel cell, binder for forming electrode catalyst layer, fuel cell electrode catalyst layer and fuel cell

An anion exchange resin capable of producing an electrolyte membrane, a binder for forming an electrode catalyst layer and a fuel cell electrode catalyst layer, which have improved chemical properties and mechanical properties; an electrolyte membrane and a binder for forming an electrode catalyst layer produced from the anion exchange resin; and a fuel cell having the electrolyte membrane or the electrode catalyst layer.

An anion exchange resin capable of producing an electrolyte membrane, a binder for forming an electrode catalyst layer and a fuel cell electrode catalyst layer, which have improved electrical properties; an electrolyte membrane and a binder for forming an electrode catalyst layer produced from the anion exchange resin; and a fuel cell having the electrolyte membrane or the electrode catalyst layer.

The present invention provides a cation exchange resin, and a cation exchange membrane and an electrolyte membrane for a fuel cell using the same. The cation exchange resin comprises a divalent hydrophobic unit; and a divalent hydrophilic unit having divalent hydrophilic groups which are repeated via carbon-carbon bond. The divalent hydrophilic groups being composed of one aromatic ring, or being composed of a plurality of aromatic rings which are bonded to each other via a divalent hydrocarbon group, a divalent silicon-containing group, a divalent nitrogen-containing group, a divalent phosphorus-containing group, a divalent oxygen-containing group, a divalent sulfur-containing group, or carbon-carbon bond, and at least one of the aromatic rings having a cation exchange group; wherein the hydrophobic unit and the hydrophilic unit are bonded to each other via carbon-carbon bond.

Cation exchange resin, and cation exchange membrane and fuel cell electrolyte membrane using same

The present invention provides an anion exchange resin capable of producing an electrolyte membrane for a fuel cell, a binder for forming an electrode catalyst layer and a battery electrode catalyst layer. The anion exchange resin of the present invention has a hydrophobic unit, a hydrophilic unit and divalent fluorine-containing groups. The hydrophobic unit has divalent hydrophobic groups composed of one aromatic ring or a plurality of aromatic rings that are repeated via carbon-carbon bond. The hydrophilic unit has divalent hydrophilic groups composed of one aromatic ring or a plurality of aromatic rings, at least one of which has an anion exchange group, that are repeated via carbon-carbon bond. The divalent fluorine-containing groups have a specific structure and are bonded via carbon-carbon bond to the hydrophobic unit and/or the hydrophilic unit and/or a moiety other than these units.

Anion exchange resin, electrolyte membrane for fuel cell, binder for forming electrode catalyst layer, battery electrode catalyst layer and fuel cell

The present invention aims to provide a hydrocarbon-based polymer electrolyte which is excellent in processability and proton conductivity, especially proton conductivity at low water content, and a membrane thereof. The polymer electrolyte contains, in its main chain, a repeating unit represented by the following formula (1): wherein Ar represents a benzene or naphthalene ring, or a derivative thereof in which one or more of the ring-forming carbon atoms is replaced by a hetero atom; X represents a proton or a cation; a and b are each an integer of 0 to 4, and the sum of a's and b's is 1 or greater; m represents an integer of 1 or greater; and n represents an integer of 0 or greater.

High-molecular-weight electrolyte and use thereof

An anion exchange resin having a hydrophobic unit with divalent hydrophobic groups bonded to each other via an ether bond, the divalent hydrophobic groups being composed of one aromatic ring, or being composed of a plurality of aromatic rings which are bonded to each other via a divalent hydrocarbon group, carbon-carbon bond or the like; and a hydrophilic unit having divalent hydrophilic groups bonded to each other via carbon-carbon bond, the divalent hydrophilic groups being composed of one aromatic ring, or being composed of a plurality of aromatic rings which are bonded to each other via a divalent hydrocarbon group or carbon-carbon bond, the aromatic ring or at least one of the aromatic rings having an anion exchange group are bonded via carbon-carbon bond.

A metallic separator for fuel cells having a metal plate, an electroconductive coating layer covering at least a surface in front and back surfaces of the metal plate which contacts a raw material and/or a reaction product, and an electroconductive channel-forming member disposed on a surface of the coating layer and forming a channel for the raw material and/or the reaction product and/or a channel for a cooling medium for cooling. A surface layer on the metal plate has a tensile residual stress within such a range that no stress-corrosion cracking occurs.

Growing community of inventors

Kofu, Japan

Kenji Miyatake