423 results about "Proton conductor" patented technology

An acidic group-containing solid polymer, having an acidic group such as a sulfonic acid group, a phosphoric acid group, and/or a phosphonic acid group, is dissolved in an organic solvent other than methanol. An ionic liquid is added to the solution to prepare a casting liquid. The casting liquid is subjected to casting in a cavity formed by an opening of a frame and a sheet member, each of which is composed of PTFE (fluorine-containing polymer material). Thereafter, the solvent is removed to yeild a proton conductor membrane.

The present invention relates to a binder composition for a fuel cell including a proton conductor and one or more binders selected from the group consisting of poly[2,2′-(m-phenylene)-5,5′-bibenzimidazole] (PBI), poly[2,5-benzimidazole] (ABPBI), polybenzoxazole (PBO), and polybenzothiazole (PBT).

An acidic group-containing polymer which has an acidic group such as sulfonic acid group, phosphoric acid group, and phosphonic acid group, and a proton acceptor which has a boiling point at 1 atmosphere higher than 100° C. and which functions as a medium for conducting proton dissociated from the acidic group are retained in pores of a porous member. Preferred examples of the proton acceptor include a salt structure composed of an anion and a cation derived from a basic organic compound, a basic organic compound, and a dissociation-facilitating polymer which facilitates dissociation of proton. Any one of the acidic group-containing polymer and the proton acceptor may be retained first, or both may be retained simultaneously.

The invention discloses a preparation method of a proton exchange membrane used for a direct methanol fuel cell. The method is realized by that polyether ether ketone is added into concentrated sulfuric acid to carry out sulfonation reaction, thereby obtaining sulfonated polyether ether ketone, then the sulfonated polyether ether ketone is dissolved in organic solvent, N, N (1)-Carbonyldiimidazole is added to stir for one to three hours, coupling agent is mixed for stirring the reaction for 1.5 to 4 hours, then inorganic crosslinking agent is mixed to react under the temperature of 50 to 80 DEG C. Proton conductors are mixed to continue getting the mixed solution of the sulfonated polyether ether ketone or the inorganic crosslinking agent or proton conductors under the temperature. Finally the proton exchange membrane for a direct methanol fuel cell is obtained by that the mixed solution of the sulfonated polyether ether ketone or the inorganic crosslinking agent or proton conductors is/are processed through membrane forming, drying and exuviation. The membrane has the advantages of good methanol diffusion resistance, low cost, high proton conductivity and good water-resistant swelling performance under high temperature. The preparation method is simple, the raw materials have low price, and the production cost is low.

A film electrode used on proton exchange film fuel cell consists of five layers as middle layer of total F proton exchange film, two external layers of catalytic layers and two layers of diffusion layers outside of two external layers. Its preparing method includes embedding nanofibre proton conductor network in catalytic layer, preparing a layer of nanofibre proton conductor multiple film on total F proton exchange film surface by static spinning technique, coating ink containing catalyst in proton conductor fibre, drying and heat rolling to obtain film electrode containing nanofibre proton conductor network in catalytic layer.

A solid oxide fuel battery anode and the preparation method, the characteristic is: adulterates the titanic mine cadmium acid lanthanum or the titanate compound oxide as the anode structure framework and the main electron conducting phase, uses the ion infusing method, the macromolecule modeling board method, the sol-gel method, or the suspending grain pulp spreading method, prepares the nanometer grain anode active substance multi-hole film with the thickness of 0.05-5 micron in the inner and outer hole surface of the multi-hole anode structure framework; the anode active substance includes the ceric oxide, or the adulterating ceric oxide, or the zirconia based oxygen ionic conductor electrolyte, or the cerate based proton conductor electrolyte, or the mixture of the above active substance, or the above active substance adding a small quantity of Ni or Ni-Cu and V2O5. The invention is structure stabilization, high conducting rate, high catalyzing activity of the fuel oxidation, matching with the closing material at physics and chemistry, structure size stabilization, anti-carbon deposition, is fit for the fuel operation of the hydrocarbon directly.

The invention relates to a preparation method for an ordered ultra-thin electrode of a proton exchange membrane fuel cell. The preparation method comprises the steps of preparing an ordered electrode structure and establishing an ultra-thin catalyst layer; a process of impregnating and annealing is carried out on a carbon paper to obtain TiO<2> seed crystals; then a TiO<2> nanorod is grown through a hydrothermal method; a TiN ordered array is prepared through NH<3> etching; and the array is loaded with a catalyst to establish the ordered ultra-thin catalyst layer without containing a proton conductor (such as Nafion). The established ordered ultra-thin catalyst layer can be used for the proton exchange membrane fuel cell, other fuel cells and electrochemical devices.

Disclosed is a proton conductor which does not need to replenish water and which can be used even in a dry atmosphere and in a high temperature range. The proton conductor includes carbon clusters having functional groups capable of releasing a proton, and a substance having portions capable of serving as proton-receiving portions. Alternatively, the proton conductor includes a substance having functional groups capable of releasing a proton, and carbon clusters having portions capable of serving as proton-receiving portions. Carbon clusters, particularly, those carbon clusters which have a specified molecular structure such as fullerenes and carbon nanotubes, with various acid functional groups introduced thereinto, show proton conductivity even in a dry state, and an addition of a substance for promoting the dissociation of protons to the carbon clusters enhances the proton conductivity drastically.

The invention discloses an organic-inorganic composite proton exchange membrane for a proton exchange membrane fuel cell and a preparation method thereof. The proton exchange membrane comprises a functional polymer (such as polyvinylpyrrolidone) of which the side chain contains N-heterocycle, heteropoly acid and skeleton polymers (such as polyvinylidene fluoride, polyethersulfone, polysulfone and polyethylene sulfone). The preparation method comprises adding the functional polymer, the skeleton polymers and the heteropoly acid into an organic solvent (such as N, N-dimethyl formamide, N, N-dimethyl acetamide and N-methyl-2-pyrrolidone), heating the mixture with stirring until complete dissolution so that a transparent and uniform proton exchange membrane solution is obtained, and carrying out solution casting or curtain coating to obtain the organic-inorganic composite proton exchange membrane. The organic-inorganic composite proton exchange membrane is uniform, transparent and compact, has excellent chemical stability, heat stability, mechanical properties and proton conductivity, and does not lost a proton conductor easily. The preparation method utilizes easily available and cheap raw materials, has simple processes, is suitable for large-scale production and can be widely used in fuel cells, flow cells, plumbic acid cells and a water-electrolyser.

The invention relates to fuel-cell catalyst slurry and a preparation method thereof. The catalyst slurry comprises the following raw materials in percentage by weight: 1-40% of solid particle catalyst, 0.1-30% of high polymer proton conductor, 1-60% of water, 1-60% of low-grade alcohol with C1-4, and 0.1-30% of high polymer dispersant, wherein the high polymer dispersant is one or a mixture including more than any two of polyvinylpyrrolidone, polyvinyl alcohol, sodium carboxymethylcellulose, polyoxyethylene and polyacrylamide. The preparation method of the slurry is simple to operate, the slurry has the characteristics of high dispersity and high stability by adding high polymers into the catalyst slurry, a catalytic layer prepared from the slurry is good in uniformity, and an electrode prepared from the slurry has a better discharge performance. The slurry is suitable for spray coating, brush coating, blade coating, screen printing and other numerous mechanical manners for automated production of electrodes. The advantages of high efficiency, time saving and labor saving are achieved.

The invention relates to a barium zirconate proton conductor designed by complex phase structure with a high electric conductivity and its manufacturing method. The invention is coating a layer of NaOH or sulfate around the crystal grain of the barium zirconate. The manufacturing method is: taking the BaCO3, ZrO2 and Y2O3 as raw material, water as medium, ball milling mixing for 4-10 hours, calcining for 4-12 hours in 1200-1400 DEG C; then adding 1-10% molar ZnO, ball milling mixing for 4-10 hours, adding 5-50% mol NaOH or K2SO4 or Na2SO4 or Li2SO4 in a way of hand lapping to make the mixture uniform; putting the mixing material into the die and dry pressing molding under a pressure of 50-120 MPa, and then isopressing under 200-350 MPa; sintering in the air of 1200-1500 DEG C with a heating rate of 2-10 DEG C/minute and keeping warm for 2-10 hours, then cooling to the room temperature to produce the barium zirconate proton conductor material with a high electric conductivity. The invention adopts the new designing thought of complex phase structure to establish a foundation for exploiting hydrogen gas and vapor sensor, hydrogen pump and concentration cell electrolyte material.

An amorphous carbon having sulfonate group introduced therein is provided which is characterized in that chemical shifts of a condensed aromatic carbon 6-membered ring and a condensed aromatic carbon 6-membered ring having sulfonate group bonded thereto are detected in a ¹³C nuclear magnetic resonance spectrum and that at least a diffraction peak of carbon (002) face whose half-value width (2θ) is in the range of 5 to 30° is detected in powder X-ray diffractometry, and which exhibits proton conductivity. This sulfonated amorphous carbon is very useful as a proton conductor material or solid acid catalyst because it excels in proton conductivity, acid catalytic activity, thermal stability and chemical stability and can be produced at low cost.

A proton conductor includes P₂O₅ and at least one of B₂O₃, ZrO₂, SiO₂, WO₃, and MoO₃. The proton conductor has an amorphous phase of 60 wt % or more. The proton conductor exhibits proton conductivity at temperatures above 100° C. without humidification.

An electrode, a method of producing the same, and a fuel cell including the electrode are disclosed. The electrode includes: a support; and a catalyst layer formed on the support, the catalyst layer includes: a support catalyst; and a proton conductor having an amorphous phase greater than about 60% by weight. The proton conductor includes: at least one material from the group of B₂O₃, ZrO₂, SiO₂, WO₃, and MoO₃; and P₂O₅, the proton conductor being 0.5-60 parts by weight where the support catalyst is 100 parts by weight. The proton conductor can be synthesized at a low enough temperature so that it can be applied to the support with catalyst particles to form a catalyst layer. The coated proton conductor is in a solid state so the fuel cell is stable over time and it does not obstruct a fuel gas so that the catalyst can be more efficiently used.

The invention relates to a catalyst sizing agent for preparing a catalytic membrane electrode of a proton exchange membrane fuel cell. The catalyst sizing agent consists of an electric catalyst, proton conductor polymer distilled water and an organic solvent. The catalyst sizing agent is controlled in a colloid state, so that the pore structure of a prepared catalytic layer of a catalytic membrane electrode is improved, and the cell performance is enhanced. The conventional sizing agent for preparing the catalytic membrane electrode is in a solution state, so that the utilization ratio of a prepared electrode catalyst is not high, the porosity of a catalytic layer is very low, and the gas diffusion process is suppressed. In the invention, the composition and adding sequence of organic solvents in the sizing agent are changed. A preparation method of the catalyst sizing agent comprises the following steps of: conditioning a solution-state catalyst sizing agent with isopropanol, ethanol, ethanediol and the like; and dropwise adding the formed sizing agent into butyl acetate under ultrasonic oscillation condition to form a colloid-state catalyst sizing agent.

The invention discloses a polyacid-based metal organic frame proton conductor material of inorganic acid molecule functionalization. Polyanions and crystal water molecules are domain-limited in pore canals of the metal organic frame, wherein the structure thereof is HAaPOM-MOF, wherein HA is one of H2SO4 or H3PO4; and POM-MOF is the polyacid-based metal organic frame, and is one of [Ag8L5](PMo12O40)(H2O)10 or [Ag8L5](PW12O40)(H2O)13, wherein L is 5-phenyl tetrazole. The invention further discloses a preparation method for the polyacid-based metal organic frame proton conductor material of the inorganic acid molecule functionalization. The preparation method comprises the following steps: firstly preparing the polyacid-based metal organic frame, uniformly mixing the prepared polyacid-based metal organic frame and HA solution, separating the material, washing, drying to obtain the polyacid-based metal organic frame proton conductor material of the inorganic acid molecule functionalization.

The invention discloses a composite proton exchange membrane which is prepared by taping mixed liquid of a sulfonated polyether ether ketone solution with a sulfonation degree of 50-70 percent, polyaniline filter liquid and heteropoly acid to form the membrane. The composite membrane is prepared by using SPEEK (Sulfonated Polyether Ether Ketone) as a basal body and PANI (Polyaniline) and HPA (Heteropoly acid) as dopants, the material source is wide and does not need to be imported, a preparation technology is simple, and instruments are simple, thereby the cost of the membrane is reduced; a hydrogen bond formed by PANI and SPEEK is used for avoiding the swelling of the SPEEK and reducing methanol penetration and the HPA dropout rate, and the proton conductivity of the composite membrane is improved by the HPA. By changing the composition and the ratio between an alkaline polymer and a proton conductor, the novel PEM (proton exchange membrane) reaches optimum balance among high proton conductivity, low methanol penetration and low HPA dropout rate, the proton conductivity reaches 10-2S/cm, the methanol penetration rate of the composite proton exchange membrane is a half lower than that of an Nafion 117 membrane, and the HPA wastage rate does not reach 5 percent.

Provided are a solid proton conductor and a fuel cell including the solid proton conductor. The solid proton conductor includes a polymer providing a proton source, and a polymer solvent providing a proton path.

This invention discloses a proton conductor material of high electric conductance of La2Zr2O7matrix doped at Zr bit and its preparation method, in which, the molecular structure of the material is: La2Zr2-xMxO7-delta, and M is Yb3+, Er3+, Gd3+ or Sc3+, x is 0.01-1, delta is x/2. The preparation process includes: taking La2O3, ZrO2 and Yb2O3 or Er2O3, Gd2O3 or Sc2O3 as the raw materials to match with them according to the mol ratio of each material in terms of the molecular formula and adds dispersant in light of the mass percentage of the adjuvant then to ball-mill and mix them with the adjuvant with water or alcohol as the medium to be dried to get powder to be milled, dried, screened, synthesized and heat-preserved to get the material, which is ball-milled and pressed to be sintered in 1400-1650deg.C and cooled to the room temperature to get the material.

The invention is concerned with a method to increase extraction efficiency of semiconductor LBD by texturing film transfer. Develop conventional semiconductor LBD, weld the core of flip semiconductor LBD, product template with micro/nanometer-figures by the designed light-etched domain, select and confect a kind of prepolymer in appropriate proportion and print the ultrastructure figure on the prepolymer colloid with micro/nanometer print technology and solidify the prepolymer colloid film, peel off the prepolymer film with ultrastructure figure and get the texturing film medium film. The step of texturing film transferring is spreading transparent PMMA glue on underlay of LBD, setting the side of texturing film with figure upside and pasting on the core of diode, setting the side of texturing film with figure peeled off upside and pasting on the core of diode, adding proper temperature to solidify the transparent agglutinating glue.

The invention relates to a preparation method of a high-temperature proton conductor composite material, which is characterized in that sulfonated triphenylphosphine salt is added into polybenzimidazole after the polybenzimidazole is dissolved in a solvent to obtain membrane casting solution, the membrane casting solution is poured onto a glass membrane casting plate to be dried for 24 hours at the temperature of 60 DEG C and then to be dried for 4 hours at the temperature of 100 DEG C, the glass membrane casting solution is steeped into a deionized water after being naturally cooled to the room temperature, then the membrane is torn off, and a polybenzimidazole-type high polymer material doped with sulfonated triphenylphosphine salt high-temperature proton conductor composite material is obtained. The sulfonated triphenylphosphine salt is used as the doping material, so the PBI has good proton conduction performance, and the sulfonated triphenylphosphine salt not only can make the PBI be well blended with the high polymer material, but also can improve the mechanical performance of the material. The composite material can be used at the temperature of room temperature to 180 DEG C, and the electric conductivity of the composite material is within 0.08 to 0.2 S/cm. The composite material can be applicable to the high-temperature proton exchange membrane material and other proton conduction material of the fuel cell, and also can be applicable to the fields such as the electrolysis, the sensor, the electro-luminescent material and the like.