313 results about "Carbon paper" patented technology

The invention discloses a full-automatic multi-station H-shaped flowing electrolytic tank experiment system and a control method thereof, and relates to the technical field of electrolytic tank experiments. Comprising an experiment table top, a mechanical arm is arranged on the top of the experiment table top, a carbon paper module frame is arranged on the top of the experiment table top, a TIP head box frame is arranged on the side, close to the carbon paper module frame, of the top of the carbon paper module frame, a sample bottle frame is arranged on the top of the experiment table top, and a penicillin bottle exchange frame is arranged on the top of the experiment table top. And five groups of H-shaped flowing electrolytic tanks are arranged at the top of the experiment table top and close to one side of the penicillin bottle exchange rack at equal intervals. According to the full-automatic multi-station H-type flowing electrolytic cell experiment system, through collaborative design of the mechanical arm, the quick-change clamp and multiple stations, full-process automation of catalyst coating, electrode assembling, electrolyte circulation, data acquisition and cleaning and sample reserving is achieved, parallel operation of multiple sets of experiments is supported, and the experiment efficiency is improved.

The invention discloses a method for synthesizing glycine by coupling oxalic acid with nitrate under the electro-catalysis of a molecular catalyst lead phthalocyanine, and belongs to the technical field of materials and electro-catalysis. The method comprises the following steps: uniformly mixing lead phthalocyanine, a dispersing agent and a binding agent to prepare catalyst slurry; loading the catalyst slurry on carbon paper to obtain carbon paper containing a catalyst; an H-type electrolytic tank is assembled, in the H-type electrolytic tank, an electrolyte of an anode chamber is a sulfuric acid solution, an electrolyte of a cathode chamber is a sulfuric acid solution containing oxalic acid and potassium nitrate, and the cathode chamber and the anode chamber are separated through an ion exchange membrane; a calomel electrode is inserted into the cathode chamber as a reference electrode, carbon paper containing a catalyst is used as a working electrode, a platinum sheet is inserted into the anode chamber as a counter electrode, and glycine is obtained through electrolysis. The glycine is prepared by using the lead phthalocyanine as the catalyst, so that the reaction efficiency can be effectively improved, the reaction energy consumption is reduced, and the production process is simplified.

The invention discloses a Joule thermal preparation method of a silicon-based composite material compounded by a silicon-based phase and a metal phase and application of the Joule thermal preparation method in a lithium ion battery, and relates to the technical field of lithium ion battery negative electrode materials, and the Joule thermal preparation method specifically comprises the following steps: S1, obtaining a silicon-based original material compounded by the silicon-based phase and the metal phase by adopting a suspension smelting and rapid quenching technology; s2, mixing the silicon-based original material with a conductive agent, and obtaining a silicon-based original material-conductive agent powder material through a sanding technology; and S3, placing the silicon-based original material-conductive agent powder material in rolled carbon paper, clamping the carbon paper at two ends of an electrode, introducing current, raising the temperature of the carbon paper to the highest temperature within a certain time through Joule heat generated by pulse discharge, and preparing the silicon-based composite particles on the carbon paper by using the Joule heat, the silicon-based composite material is obtained. The method disclosed by the invention is simple to operate, good in process controllability, high in yield and low in cost, and shows excellent comprehensive performance in the lithium ion battery.

The invention discloses a carbon-based aqueous zinc ion supercapacitor and a preparation method thereof, and belongs to the technical field of zinc ion supercapacitors. The capacitor comprises a positive electrode, a negative electrode, a multi-element electrolyte and a porous diaphragm, the anode is an activated carbon composite material; the negative electrode is a rolled zinc foil; the multi-element electrolyte is a mixed system aqueous solution formed by dissolving zinc trifluoromethanesulfonate, zinc sulfate, zinc chloride, zinc perchlorate and an electrolyte additive in deionized water; and the porous diaphragm is glass fiber. The preparation method comprises the following steps: uniformly mixing the activated carbon composite material, the conductive black and the binder in proportion, adding the organic solvent, grinding into slurry, coating the slurry on the carbon paper, performing vacuum drying to obtain the positive electrode plate, and assembling the positive electrode plate with the multi-element electrolyte, the negative electrode and the porous diaphragm. The raw material cost and the energy consumption are low, the operability is greatly improved, and the repeatability is good.

The invention provides carbon paper for a fuel cell, a preparation method of the carbon paper and the fuel cell, and the preparation method of the carbon paper for the fuel cell comprises the following steps: providing a polytetrafluoroethylene film, and preparing slurry which comprises graphitized carbon fibers, carbon nanotubes, polytetrafluoroethylene emulsion, phenolic resin dry powder, ethylene glycol, deionized water and triton; coining the slurry on the polytetrafluoroethylene film by using the polytetrafluoroethylene film as a substrate and adopting a silk-screen printing process to prepare a carbon paper blank; putting the carbon paper blank into a drying oven for curing, and stripping the polytetrafluoroethylene film in the cured carbon paper blank to obtain initial carbon paper; and putting the initial carbon paper into a drying oven, and sequentially carrying out carbonization treatment and graphitization treatment under atmosphere protection to prepare the carbon paper. The method is simple in process, controllable in cost and easy for large-scale production, and the prepared carbon paper has good porosity, high transverse conductivity and high transverse gas permeability.

The invention discloses a method for improving the selectivity of electrocatalytically reducing acetylene into 1, 3-butadiene by using a copper hydroxide hydrophobic nano array, which comprises the following steps: soaking a copper mesh in a mixed solution of NaOH and (NH4) 2S2O8 to obtain a Cu (OH) 2 self-supporting nano array, and then soaking in an ethanol solution of 1-dodecyl mercaptan to obtain a Cu (OH) 2 hydrophobic self-supporting nano array modified by 1-dodecyl mercaptan. A hot press is adopted to tightly press the dried hydrophobic self-supporting nano array and carbon paper to form a working electrode, a cathode chamber and an anode chamber are separated through an anion exchange membrane, electrolyte is composed of a KOH solution, and a peristaltic pump is used to enable a liquid phase to continuously circulate. According to the method, acetylene is subjected to electrocatalytic reduction to obtain 1, 3-butadiene by adopting a three-electrode system, and high-selectivity conversion of acetylene into 1, 3-butadiene is realized.

The invention provides a preparation method of a cobalt-based intermetallic carbide material and application of the cobalt-based intermetallic carbide material in a preparation method of an electrocatalytic nitrate reduction electrolytic tank or a zinc-nitrate battery. The preparation method of the cobalt-based intermetallic carbide material comprises the following steps that cobalt chloride hexahydrate, indium chloride tetrahydrate, dicyandiamide and ketjen black are ground and mixed and then put into a tubular furnace for thermal annealing reduction, and the cobalt-based intermetallic carbide material is obtained. According to the method, cobalt-based intermetallic carbide material Co3InC0.75 powder is prepared into slurry, the slurry is dropped on carbon paper to be used for an electro-catalysis reaction, the material strengthens nitrate adsorption and water decomposition and inhibits a hydrogen evolution reaction, and therefore the performance of electro-catalysis of nitrate reduction to produce ammonia is improved.

The application provides a preparation method of high-conductivity carbon fiber paper and belongs to the technical field of fuel cells. The method comprises the following steps: step 1, dissolving a water-soluble polymer in water to prepare a dispersion liquid with a certain concentration; step 2, dispersing short-cut carbon fibers with a certain thickness of metal plating layer in the dispersion liquid to prepare a fiber slurry; step 3, performing wet papermaking on the slurry, and performing pressing and drying to prepare a raw paper; and step 4, performing high-temperature hot pressing treatment on the raw paper under a reducing atmosphere and a certain pressure to prepare a primary carbon paper. The prepared carbon paper has an electrical resistivity less than 3 mΩ·cm, a porosity greater than 80%, and a gas permeability greater than 2200 ml·mm / [cm 2 ·h·mm·Aq]. The application improves the electrical conductivity of the carbon paper and the gas permeability of the carbon paper, and the process is simple, and the performance of the fuel cell can be obviously improved.

This invention discloses a method for preparing a tufted nickel-cobalt hydroxide nanomaterial modified electrode material. The tufted nickel-cobalt hydroxide is prepared on carbon paper using a constant potential method. The electrolyte is a solution of nickel sulfate and cobalt sulfate. The specific operation is as follows: S1. Carbon paper pretreatment; S2. Electrode preparation is a solution containing nickel sulfate and cobalt sulfate; S3. Electrode preparation finally obtains the tufted electrode material.

The application discloses a kind of silicon dioxide carbon tube membrane electrode and its construction method and application.The construction process of the membrane electrode is as follows: carbon-based metal catalyst or the mixture of carbon-based metal catalyst and silicon dioxide carbon tube is dispersed in water, then organic solvent and binder solution are added in turn, to obtain catalyst ink;The catalyst ink is sprayed on carbon paper, and heat treatment is carried out in a protective atmosphere to obtain a gas diffusion electrode.If the aforementioned does not add silicon dioxide carbon tube, silicon dioxide carbon tube-organic solvent solution needs to be sprayed on the surface of the catalyst layer.The electrode is modified by silicon dioxide carbon tube, which on the one hand constructs a long-range ordered proton transport channel of membrane-catalyst-silicon dioxide carbon tube, and on the other hand adjusts the PA distribution in the membrane electrode assembly, suppresses PA loss, and improves the overall performance of the electrode.When applied to proton exchange membrane fuel cells, it can effectively solve the problems of poor stability, low activity and catalyst deactivation under high temperature conditions.

The invention relates to the technical field of methods or devices for directly converting chemical energy into electric energy, in particular to an electrode material, an electrode, a lithium ion battery and a preparation method of the electrode material. The invention provides a carbon paper composite electrode material. The carbon paper composite material comprises a laser-induced graphene substrate material and metal elementary substance or metal compound particles uniformly deposited on the surface of the laser-induced graphene substrate material. In the invention, the vertical structure of graphene can relieve the volume effect of sodium, and the uniformly grown metal particles can induce the uniform deposition of sodium and inhibit the growth of dendritic crystals. And finally, high capacity, high magnification and long-term cycling stability performance are realized.

The present invention discloses a production process for carbon paper base for a gas diffusion layer, comprising the following steps: S1: preparing a suspended slurry; S2: papermaking, pressing, heating to T1, and drying to obtain a first base paper; S3: applying an aqueous resin dispersion containing conductive particles to the first base paper, heating to T2 for pre-drying, and obtaining a second base paper; S4: continuously spraying water onto the second base paper in a mist-like manner, non-contact heating the second base paper to T3, dissolving the first water-soluble fiber in the second base paper, and pressing and drying to obtain a third base paper; S5: hot pressing and carbonizing the third base paper to obtain a carbon paper base for a gas diffusion layer; T1 and T2 are lower than the water-soluble temperature of the first water-soluble fiber, and T3 is higher than the water-soluble temperature of the first water-soluble fiber and lower than the water-soluble temperature of the second water-soluble fiber. This production process for carbon paper base for a gas diffusion layer is advantageous in reducing the resistivity of the flocs and improving the porosity and air permeability of the carbon paper base paper. The present invention also discloses a carbon paper.

The present application relates to a kind of preparation of complete mosaic-like barium strontium titanate solid solution ceramic sheet, which comprises the following steps: (1) two initial powders are mixed uniformly. After the stoichiometric ratio of nano barium titanate powder and nano strontium titanate powder is mechanically mixed by planetary ball mill for 24h, it is dried and ground to obtain the powder to be sintered;(2) the powder to be sintered is placed in graphite mold twice, the two powders are separated by two carbon paper, and pre-pressed in hand rotating tablet press and discharge plasma sintering furnace;(3) discharge plasma sintering is carried out, and appropriate sintering parameters are set, and sintering program is started, and after sintering, it is first rapidly cooled to a safe temperature 900 DEG C where grain growth is not easy, and then slowly cooled to 600 DEG C at 5 DEG C / min;(4) the sintered sample is placed in muffle furnace, and annealed at 800 DEG C for 10h, to obtain two relatively complete mosaic-like barium strontium titanate solid solution sheets.

The invention discloses a preparation method of an oxyacid radical modified graphite-based cathode for electro-catalysis hydrogen peroxide synthesis. An oxyacid (sulfuric acid or phosphoric acid) and nitric acid are compounded to form a mixed acid solution, and the graphite-based electrode is subjected to oxyacid radical modification by using the mixed acid solution. The preparation method of the oxygen-containing acid modified graphite-based electrode is simple and low in cost, does not need harsh conditions such as high temperature and the like, and has great industrial and large-scale production potential; the oxygen-containing acid radical modified graphite-based cathode prepared by an acid treatment method is used for reducing oxygen to produce hydrogen peroxide, the yield of the hydrogen peroxide exceeds 21.79 mg.cm <-2 >. H <-1 > and is increased by about 20 times compared with the yield (1.13 mg.cm <-2 >. H <-1 >) of oxygen oxidation by using unmodified original commercial carbon paper, and meanwhile, the highest selectivity of the hydrogen peroxide is up to 97.5%.

The invention discloses a high-density single-phase alpha-U2N3 block material and a preparation method thereof. The preparation method comprises the following steps: step 1, loading a certain amount of alpha-U2N3 powder into a high-pressure sintering mold embedded with carbon paper, and pre-pressing to obtain an alpha-U2N3 pre-pressed blank; 2, the high-pressure sintering mold containing the alpha-U2N3 pre-pressed blank in the step 1 is put into sintering equipment, nitrogen is introduced, sintering pressure is applied, and after the pressure is stable, the temperature is increased to the sintering temperature and kept for a certain time; and 3, after heat preservation is finished, after the furnace body is naturally cooled to the room temperature, the high-pressure sintering mold is taken out, and a compact alpha-U2N3 block material is obtained. According to the method, alpha-U2N3 powder is used as a raw material, a high-pressure mold designed by combining materials such as graphite and silicon carbide is adopted for sintering in a discharge plasma sintering furnace or a hot-pressing sintering furnace, the sintering temperature is reduced, meanwhile, decomposition of alpha-U2N3 is inhibited, and the alpha-U2N3 block with the density close to the theoretical density is obtained.

The invention belongs to the technical field of gas sensors, and particularly relates to an integrated fuel cell membrane electrode as well as a preparation method and application thereof. The preparation method provided by the invention comprises the following steps: slurry preparation: preparing catalyst slurry and carbon paper slurry; (2) after all the slurries are prepared, catalyst slurry is sprayed, and the catalyst slurry is sequentially sprayed on the two proton exchange surfaces in the spraying process; (3) then spraying carbon paper pulp; in the spraying process, carbon paper pulp is sprayed on the surface of the carbon paper MPL layer; and (4) finally, carrying out hot press molding to obtain the integrated fuel cell membrane electrode. The integrated fuel cell membrane electrode prepared by the invention ensures that the strength and moisture retention of a proton exchange membrane are improved, the impedance of the membrane electrode is reduced, and the measurement precision and the service life of a sensor are effectively improved.

The application provides a fuel cell sealing structure and a preparation method thereof, which comprises a carbon plate, a gasket, carbon paper, a CCM and a limiting element, a plurality of limiting holes are formed in the gasket, and the limiting element is arranged in any limiting hole; the carbon paper is arranged at the middle part of the gasket, the upper and lower sides of the CCM are both provided with the carbon paper and the gasket, any gasket is provided with the carbon plate away from the CCM, and any limiting element extends into the carbon plate. The method for sealing by using the soft rubber gasket has weak adhesion with the surface of the CCM, is beneficial to the flattening and positioning of the CCM, can not be limited by the thickness of the gasket, can control the compression amount of the carbon paper at will, and significantly improves the sealing property of the battery; by using the limiting element, the compression amount of the carbon paper can be limited during the fastening process, and the battery performance is ensured.

The present invention belongs to the field of catalyst preparation technology, specifically to a method for preparing a CoNiFe-based catalyst for hydrogen production by water electrolysis. A CoNiFe-based precursor is first calcined to obtain a metal oxide powder, which is then mixed with carbon black and ball-milled before secondary calcination to obtain the CoNiFe-based catalyst. This catalyst is then loaded onto a carbon paper surface as a working electrode to construct a three-electrode system for water electrolysis, exhibiting dual catalytic performance for both OER and HER.

The invention discloses an electrolytic hydrogen production electrochemical synthesis ammonia electrode catalyst and a preparation method thereof, relates to the technical field of electrochemical catalysts, and belongs to the patent classification number C25B1 / 00. Comprising the following steps: preparing graphene quantum dot powder by using a fused salt cutting method; then coating the graphene quantum dots through dopamine auto-polymerization and loading a molybdenum source, and annealing to obtain Mo-NX-coated GQDs powder; then compounding the modified Mo-NX-coated GQDs and TiCTXMXene colloid, performing vacuum filtration, depositing on carbon paper, and annealing to form a support film; and finally, performing CFplasma treatment to form a hydrophobic layer, and spin-coating perfluorinated sulfonic acid resin on the side of the carbon paper to obtain the electrode catalyst. According to the method, an efficient active center is constructed, electron / ion transmission is optimized, a three-phase interface is regulated and controlled, the ammonia yield and the Faraday efficiency are remarkably improved, and the method is suitable for a normal-temperature and normal-pressure electrochemical ammonia synthesis technology.

The invention belongs to the technical field of hydrogen production through water electrolysis, and particularly relates to a method for simulating and researching uniformity of a flow field in an electrolytic bath, which comprises the following steps: introducing water with rated flow into an inlet and outlet end plate; after the bubbles are completely discharged and the water flow is stable, adding a coloring agent into a water source, and recording the diffusion process of colored water flowing from an inlet to an outlet in each flow channel; introducing a hydrogen peroxide solution with a certain concentration into the inlet and outlet end plate; when the hydrogen peroxide solution flows in the runner, the hydrogen peroxide solution is in contact with manganese dioxide dispersed in the catalyst carbon paper to be decomposed, oxygen is separated out on the surface of the carbon paper, and the condition that oxygen is separated out from GDL during electrolysis operation is simulated; after flowing is stable, a coloring agent is added through an inlet connector, and the process that the colored water-gas two-phase flow in each flow channel flows from an inlet to an outlet is recorded. According to the invention, the process of separating oxygen from GDL can be simulated without using a proton exchange membrane and electrifying, and the real condition in the electrolytic cell is reduced.

The application relates to the technical field of fuel cells, and specifically provides a carbon paper hot-pressing curing production line, which comprises a roller pressing unit, a plurality of roller pressing mechanisms arranged in sequence along a front-rear direction, a top pressing roller and a bottom pressing roller, a pressing roller gap for carbon paper passing between the top pressing roller and the bottom pressing roller, and an adjustable distance between the top pressing roller and the bottom pressing roller; a flat pressing unit, which is located at the rear end of the roller pressing unit, comprises a top pressing belt and a bottom pressing belt, and has a pressing space for carbon paper passing between the lower horizontal section of the top pressing belt and the upper horizontal section of the bottom pressing belt; and the front-rear direction is the movement direction of the carbon paper. The carbon paper hot-pressing curing production line of the application combines the characteristics of the roller pressing process and the flat pressing process, realizes the comprehensive improvement of the thinness, flatness and curing strength of the carbon paper in the pressing process, and solves the problem that the carbon paper cannot be produced by high-quality pressing at present.

The invention belongs to the technical field of electrolytic catalysts, and particularly relates to a ruthenium nano-catalyst and a preparation method and application thereof. The preparation method of the ruthenium nano-catalyst comprises the following steps: (1) mixing a ruthenium chloride aqueous solution and a graphene oxide aqueous solution, uniformly stirring, and freeze-drying; and (2) placing the sample obtained in the step (1) between two pieces of carbon paper, and carrying out Joule hot flash sintering annealing to obtain black aerogel, namely the ruthenium nano-catalyst. The invention provides a high-loading-capacity superfine ruthenium nano-catalyst. The high-loading-capacity superfine ruthenium nano-catalyst comprises a reduced graphene oxide substrate and ruthenium nano-particles which are loaded on the substrate and have the characteristics of high loading capacity and superfine property. According to the method, the reduced graphene oxide substrate is in a bulky shape, anchoring points are provided for the ruthenium nanoparticles, the nanoparticles are finely and uniformly dispersed on the substrate in a high-density mode, and the structure is clear.

The application provides a carbon paper electrode material, a preparation method thereof and a vanadium redox flow battery. The preparation method comprises the following steps: dispersing carbon fibers and carbon nanomaterials in a dispersion liquid to form a mixed suspension; preparing a carbon paper base paper through a wet papermaking process; immersing the carbon paper base paper in a solution of a thermosetting resin, and performing drying treatment and hot-pressing curing treatment after the immersion is completed to prepare a carbon paper electrode material precursor; and performing carbonization treatment on the carbon paper electrode material precursor at 1000-1800 DEG C to obtain the carbon paper electrode material. The process method uniformly disperses the carbon nanomaterials in the skeleton of the carbon fibers, and the dispersion is more uniform. The obtained carbon paper electrode does not need to be pretreated before use, and the process flow is simplified. Meanwhile, the uniform doping of the carbon nanomaterials increases the specific surface area and the reaction activity of the electrode, and improves the energy efficiency of the flow battery.

The invention relates to a preparation method of high-performance carbon paper for a fuel cell, which is characterized by specifically comprising the following steps: step 1, carrying out surface treatment on short carbon fibers by using a strong oxidizing solution at a certain temperature to obtain modified short carbon fibers; 2, carrying out melt blending on the thermoplastic resin A and a conductive additive according to a certain proportion, carrying out extrusion granulation, and crushing to a certain particle size to obtain modified resin A; and 3, dispersing the modified chopped carbon fibers and the modified resin A in water, adding a surfactant B and a dispersant C, stirring and pulping at a low speed, and after the pulp is uniform, performing papermaking to obtain the carbon paper body paper. And 4, directly carbonizing the obtained raw paper of the carbon paper under a certain pressure, and graphitizing to obtain the carbon paper. The preparation method disclosed by the invention is simple in process, low in cost, less in equipment investment, high in safety, less in environmental pollution and easy to control, and the prepared carbon paper has excellent comprehensive performance.

The invention discloses a preparation method and application of a nickel-molybdenum polyacid-polymer-based self-supporting electrocatalyst with low platinum-carbon loading capacity, and relates to the technical field of electrocatalysts. The preparation method of the electrocatalyst comprises the following steps: weighing raw materials for preparing an electrolyte solution; comprising nickel sulfate, ammonium molybdate, chloroplatinic acid, borax, polyvinyl alcohol and chitosan. Uniformly mixing the raw materials with deionized water to obtain a nickel molybdenum polyacid solution, a borax solution and a PVA-CS solution, obtaining a target electrolyte solution, and soaking the target electrolyte solution with carbon paper; freezing and drying; performing carbonization; the treated carbon paper is used as a working electrode, a saturated calomel electrode is used as a reference electrode, and a graphite electrode is used as an auxiliary electrode; and platinum is electrodeposited on the carbon paper by adopting a cyclic voltammetry electrodeposition method to prepare the electrocatalyst. According to the prepared electrocatalyst, the cost can be reduced, the reaction kinetics of an alkaline solution and alkaline seawater can be improved, the overpotential can be reduced, the stability can be improved, and the alkaline seawater electrolysis process is more economical and efficient.

The invention belongs to the technical field of battery positive electrodes, and particularly relates to a solid solution positive electrode catalytic material for a lithium oxygen battery and a preparation method and application thereof. Comprising the following steps: firstly, growing a nickel-cobalt bimetallic precursor nanoneedle array on carbon paper by using a 1-octyl-3-methylimidazole chloride salt assisted hydrothermal method; then preparing a selenylation sample through a NaHSe solution; and step 3, cleaning the selenylation sample for multiple times, roasting in an argon atmosphere to remove excessive selenium, and synthesizing the Ni-doped CoSe2 solid solution nanoneedle array. The reaction conditions are mild and easy to control; the selenized material completely inherits the morphology of the precursor; and in the application of the lithium oxygen battery, the lithium oxygen battery still has excellent stability after multiple cycles, and enough discharge depth can be realized.

The invention relates to the technical field of costume design, in particular to a costume design line drawing device which comprises a line drawing seat, a smoothing assembly and a cleaning assembly, a placing groove is formed in the upper end of the line drawing seat, the smoothing assembly is arranged in the placing groove, first electric sliding rails are symmetrically arranged at the front and back of the upper end of the line drawing seat, and first electric sliding tables are slidably connected to the first electric sliding rails; a second electric sliding rail is arranged at the lower end of the support, a second electric sliding table is slidably connected to the second electric sliding rail, an electric telescopic rod is arranged at the lower end of the second electric sliding table, a mounting plate is arranged at the lower end of the electric telescopic rod, a line drawing end is arranged at the lower end of the mounting plate, and a cleaning assembly corresponding to the line drawing end is arranged on the mounting plate. When the line drawing device is used, when the line drawing end is used for drawing lines, paper scraps or carbon paper powder generated during line drawing can be conveniently collected through the arranged cleaning assembly, later cleaning is facilitated, the pollution problem in the line drawing process is solved from the source, and work and fabric cleanliness is kept.

The invention discloses a method for preparing fuel cell carbon paper from boron-modified thermosetting phenolic resin. The method comprises the following steps: adding phenol and boric acid in a molar ratio of 1: (0.25-0.45) into a reaction kettle, and reacting to obtain a phenyl borate solution; adding solid formaldehyde into the reaction kettle to react with the boric acid phenyl ester solution to obtain boron modified thermosetting phenolic resin; and impregnating the carbon paper precursor in the boron modified thermosetting phenolic resin impregnation liquid, baking, carrying out hot press molding, carbonizing, and graphitizing to obtain the fuel cell carbon paper. The conductivity, thermal conductivity, mechanical property and porosity of the carbon paper are improved, so that the performance of the carbon paper is comparable to that of Japanese Dongli carbon paper, and the conductivity is better.

To provide a conductive carbon paper that can be used in a fuel cell to enable a membrane electrode of a fuel cell to maintain good conductive stability and power generation performance during power generation, and a method for manufacturing the same.SOLUTION: A conductive carbon paper includes carbon fibers and an adhesive component, and the adhesive component contains an elasticity aid, and when a load of 1 MPa is applied in the thickness direction of the carbon paper, its volume density is 0.30 to 0.40 g / cm3. The conductive carbon paper is produced by producing a carbon fiber base paper containing the elasticity aid, dipping it in a gel liquid, and then drying, solidifying, and carbonizing it.SELECTED DRAWING: None

The application discloses a negative electrode attaching device for fuel cell membrane electrode production and a production process, and belongs to the technical field of fuel cell membrane electrode production. The negative electrode attaching device for fuel cell membrane electrode production comprises a rotating table device, wherein the rotating table device comprises a rotating disc, a plurality of guide plates are arranged on the rotating disc, a bearing plate is arranged on the top surface of each guide plate, a plurality of first through holes and a plurality of second through holes are formed in the bearing plate, a plurality of convex rings are arranged on the top surface of each guide plate and are in contact with the bottom surface of the bearing plate, the area surrounded by the convex rings forms a carbon paper bearing station on the corresponding area of the top surface of the bearing plate, a first air hole surrounded by the corresponding convex ring is formed in the top surface of each guide plate, and a plurality of second air holes are formed in the top surface of each guide plate; and an air path mechanism is arranged in each guide plate, so that the first air hole and the second air hole are respectively communicated with an air source, thereby realizing that only the first through holes in the corresponding area of the carbon paper are adsorbed by the negative pressure when the carbon paper is adsorbed, and the solidification of the glue after the carbon paper is glued is avoided due to the air flow generated by the excess first through holes around the carbon paper.