Abstract:
A method of the present invention for producing an anion exchange membrane includes the steps of: (i) irradiating a first polymer film with radiation; and (ii) graft-polymerizing a monomer containing a site into which a functional group having anion conducting ability can be introduced and an unsaturated carbon-carbon bond onto the radiation-irradiated first polymer film so as to form a second polymer film containing grafted chains. This method further includes the subsequent steps of: (a) subjecting the second polymer film to a treatment including irradiation with radiation so as to introduce a crosslinked structure into the grafted chains; and (b) introducing the functional group having anion conducting ability into the site.
Abstract:
Provided is an ionomer resin including a copolymer containing the following first structural unit. L1 to L5 are each independently a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkanol group having 1 to 4 carbon atoms, or a specific functional group including an anion-exchange group, and an example of the functional group is —Z2-M1-Z1(R1)(R2)(R3). R1 to R3 are directly bonded to Z1 and are each independently an alkyl group having 1 to 8 carbon atoms or an alkanol group having 1 to 8 carbon atoms. M1 is a linear hydrocarbon chain having 3 to 8 carbon atoms, Z1 is a nitrogen atom or a phosphorus atom, and Z2 is a nitrogen atom bonded to one hydrogen atom, an oxygen atom, or a sulfur atom. L6 is a hydrogen atom, a methyl group, or an ethyl group.
Abstract:
Provided is a resin including a copolymer having a first structural unit and/or second structural unit and a structural unit having a polar group. R1, R2, R5, and R6 are each independently a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, R3 and R4 are each independently a hydrogen atom or an alkyl group having 1 to 18 carbon atoms, A1 is a saturated carbon chain having 3 to 7 carbon atoms or a structure resulting from substitution of a heteroatom for a part of the carbon atoms of the saturated carbon chain, m and n are each independently 0 or 1, and X1 and X2 are each independently a halide ion, a hydroxide ion, or an anion of an organic or inorganic acid.
Abstract:
The membrane electrode assembly (MEA) of the present invention is a fuel cell MEA including an anion exchange membrane and a catalyst layer disposed on the surface of the membrane. In the MEA, the anion exchange membrane is an anion-conducting polymer electrolyte membrane in which a graft chain having anion conducting ability is graft-polymerized on a substrate formed of a skived film of ultra-high molecular weight polyolefin. This MEA has various superior properties for achieving an improvement in the power output of an anion exchange PEFC compared to conventional MEAs.
Abstract:
The membrane electrode assembly (MEA) of the present invention is a fuel cell MEA including an anion exchange membrane and a catalyst layer disposed on the surface of the membrane. In the MEA, the anion exchange membrane is an anion-conducting polymer electrolyte membrane in which a graft chain having anion conducting ability is graft-polymerized on a substrate formed of a skived film of ultra-high molecular weight polyolefin. This MEA has various superior properties for achieving an improvement in the power output of an anion exchange PEFC compared to conventional MEAs.
Abstract:
The method for producing an anion exchange membrane according to the present invention includes the steps of irradiating a substrate composed of a hydrocarbon polymer with radiation and heat-treating the irradiated substrate so as to form a crosslinked structure between chains of the hydrocarbon polymer contained in the substrate; further irradiating the substrate, in which the crosslinked structure has been formed, with radiation and graft-polymerizing, onto the irradiated substrate, a monomer containing a site into which a functional group having anion conducting ability can be introduced and an unsaturated carbon-carbon bond so as to form a graft chain composed of the polymerized monomer; and introducing the functional group having anion conducting ability into the site of the formed graft chain.