Abstract: A multifunctional mixed oxide electrocatalyst material including a metal oxide A with oxygen storage capacity and a metal oxide B with oxygen evolution reaction is prepared by two-steps hydrothermal reactions. The electrocatalyst material is a good free radical scavenger, oxygen evolution reagent and able to alleviate carbon monoxide poisoning on catalyst, when it is applied in a membrane electrode assembly for fuel cells.

Abstract: An anode catalyst layer with high reversal tolerant capability includes an anode inner catalyst layer close to a proton exchange membrane and an anode outer catalyst layer close to a gas diffusion layer. At least the anode inner catalyst layer contains a reversal tolerant catalyst and a hydrophilic additive. The content of the hydrophilic additive in the anode inner catalyst layer is not less than that of the anode outer catalyst layer, or the water retention capability of the anode inner catalyst layer is not less than that of the anode outer catalyst layer.

Abstract: The invention relates to the field of fuel cells, and in particular to a method for preparing highly stable catalyst coating slurry for fuel cells. The method for preparing highly stable catalyst coating slurry for fuel cells, includes at least two mixing and dispersing steps. The first mixing and dispersing step is carried out to mix and disperse the catalyst, perfluorosulfonic acid resin and solvent to obtain a first-stage mixed dispersion, and the other mixing and dispersing steps are carried out to mix and disperse the previous-stage mixed dispersion and the newly added perfluorosulfonic acid resin, wherein at least one mixing and dispersing step has a surfactant is added for mixing and dispersing. The catalyst in the catalyst slurry prepared by the method has good dispersion stability and less sedimentation, and good performance is achieved when the catalyst slurry is applied to membrane electrodes.

Abstract: A preparation method of composite materials having ion exchange function is provided. The method comprises the following steps: adding a trace of strong protonic acid and/or Lewis acid as a catalyst into the material during compounding, to allow nitrile groups of at least one nitrile group-containing ion exchange resin and nitrile groups of functional monomers grafted on the porous fluoropolymer membrane to form a triazine ring crosslinked structure.

Abstract: The present provides a method for preparing a composite material, wherein the method comprises the following steps: (1) compounding a dispersion solution of an ion exchange resin containing a free radical initiator and a high-valence metal compound, with a functional monomer-grafted porous fluoropolymer membrane with a microporous structure by performing solution pouring, tape casting, screen printing process, spraying, or impregnating process; (2) subjecting a wet membrane to heat treatment at 30˜300° C., so that the free radical initiator can initiate crosslinking reaction between the porous membrane and the resin to obtain the composite material.

Abstract: The present provides a method for preparing a composite material, wherein the method comprises the following steps: (1) compounding a dispersion solution of an ion exchange resin containing a free radical initiator and a high-valence metal compound, with a functional monomer-grafted porous fluoropolymer membrane with a microporous structure by performing solution pouring, tape casting, screen printing process, spraying, or impregnating process; (2) subjecting a wet membrane to heat treatment at 30˜300° C., so that the free radical initiator can initiate crosslinking reaction between the porous membrane and the resin to obtain the composite material.

Abstract: Provided is a composite which is comprised of one or more ion exchange resin(s) and fluorine containing polymer fiber, wherein the fiber and the film-forming resin form a triazine-ring crosslinked structure, so that the film prepared from the composite is of good airtightness and stability, as well as high ion exchange capacity and high conductivity. The preparation method of the composite, the product prepared from this composite and the use thereof are also provided.

Abstract: Provided is a composite which is comprised of one or more ion exchange resin(s) and a porous fluorine containing polymer membrane (2), wherein the porous membrane and the resin form a carbon-chain crosslinked structure, so that the film prepared from the composite is of good airtightness and stability, as well as high ion exchange capacity and high conductivity. The preparation method of the composite, the product prepared from this composite and the application thereof are also provided.

Abstract: A preparation method of composite materials having ion exchange function is provided. The method comprises the following steps: adding a trace of strong protonic acid and/or Lewis acid as a catalyst into the material during compounding, to allow nitrile groups of at least one nitrile group-containing ion exchange resin and nitrile groups of functional monomers grafted on the porous fluoropolymer membrane to form a triazine ring crosslinked structure.

Abstract: A composite having ion exchange function, preparation method and use thereof are provided. The composite is formed by compounding ion exchange resin with fluorine-containing polymer porous membrane, wherein the nitrile groups in the ion exchange resin react with the nitrile groups grafted on the fluorine-contained polymer porous membrane to form triazine ring crosslinked structure. The composite has excellent mechanical property and gas impermeability, high ion exchange capacity and high electroconductivity.

Abstract: Provided is a composite which is comprised of one or more ion exchange resin(s) and a porous fluorine containing polymer membrane (2), wherein the porous membrane and the resin form a carbon-chain crosslinked structure, so that the film prepared from the composite is of good airtightness and stability, as well as high ion exchange capacity and high conductivity. The preparation method of the composite, the product prepared from this composite and the application thereof are also provided.

Abstract: A composite having ion exchange function, preparation method and use thereof are provided. The composite is formed by compounding ion exchange resin with fluorine-containing polymer porous membrane, wherein the nitrile groups in the ion exchange resin react with the nitrile groups grafted on the fluorine-contained polymer porous membrane to form triazine ring crosslinked structure. The composite has excellent mechanical property and gas impermeability, high ion exchange capacity and high electroconductivity.

Abstract: Provided is a composite which is comprised of one or more ion exchange resin(s) and fluorine containing polymer fiber, wherein the fiber and the film-forming resin form a triazine-ring crosslinked structure, so that the film prepared from the composite is of good airtightness and stability, as well as high ion exchange capacity and high conductivity. The preparation method of the composite, the product prepared from this composite and the use thereof are also provided.