520 results about "Carbon felt" patented technology

The invention discloses preparation and application of a diatomic catalyst modified carbon felt electrode. The preparation method of the modified carbon felt electrode comprises the following steps: dissolving bismuth salt, cobalt salt and urea in water to obtain a complexing solution; immersing the carbon felt substrate subjected to acid activation into a complexing solution for soaking treatment, then taking out the carbon felt substrate, and drying to obtain a precursor-loaded carbon felt; and sequentially carrying out primary heating, cold shock and secondary heating treatment on the precursor-loaded carbon felt, and cooling to obtain the Bi-Co diatom modified carbon felt electrode. The carbon felt electrode can be applied to an all-vanadium redox flow battery. The innovation point of the invention lies in that through the synergistic effect of double atoms and the mutual cooperation of the nitrogen-doped carbon substrate, the intrinsic activity bottleneck of the traditional catalyst is broken through, the comprehensive advantages of high catalytic activity, excellent stability and low cost are achieved, and a new technical solution is provided for the high performance and large-scale application of the flow battery.

The present invention discloses a self-supporting flexible carbon material and its preparation method and application. It comprises the following steps: (1) using carbon felt as a working electrode and a counter electrode respectively, applying electricity in an electrolyte for 2 to 10 minutes, washing and drying, and obtaining an electrochemically stripped carbon felt; (2) using a mixture of nitrogen-containing conductive polymer monomers and alkaline solution as an electrolyte, and using the carbon felt treated in step (1) as a working electrode to construct a three-electrode system for electrochemical treatment, washing and drying, and obtaining a carbon felt loaded with a nitrogen-containing conductive polymer; (3) heat treating the carbon felt obtained in step (2) at 800 to 900°C in a protective gas atmosphere for 1 to 2 hours, cooling to room temperature, and then washing and drying. The present invention can simultaneously complete the two steps of element doping and activation through a one-step high-temperature process, and the prepared flexible carbon material has excellent electrochemical properties.

The invention discloses a catalyst-layer-loaded carbon felt electrode for a flow battery electrode and a preparation method and application thereof.The preparation method comprises the steps that a metal / nitrogen composite material is dispersed in an organic alcohol solution to obtain a mixed solution, and the mixed solution is loaded on a carbon felt substrate through a spraying method; and performing vacuum drying to obtain the catalyst layer loaded carbon felt electrode for the flow battery electrode. The problems of insufficient conductivity and catalytic performance and the like in the prior art can be solved, and the metal / nitrogen composite material with a catalytic effect is loaded on the carbon felt substrate to obtain the carbon felt electrode loaded with the catalytic layer, so that the flow battery electrode has relatively high electrocatalytic activity and low resistance; and the electrochemical performance of the flow battery is effectively improved.

The present invention relates to the technical field of aluminum nitride synthesis, and specifically discloses a method for preparing aluminum nitride powder, S1, aluminum powder and aluminum nitride powder are mixed to obtain a first mixture; aluminum chloride powder and ammonium salt are mixed to obtain a second mixture; S2, the first mixture is spread on a material frame padded with a first carbon felt, and the second mixture is sealed in a closed container surrounded by the second carbon felt, and the closed container is on the upper surface, lower surface or middle position of the first mixture; S3, vacuuming and injecting nitrogen, and applying electricity to induce the first mixture to undergo a self-propagating combustion synthesis reaction, and to cause the second mixture to undergo a gas phase synthesis reaction. This key technology combines combustion synthesis with gas phase synthesis to overcome the problems of difficult control of combustion synthesis of aluminum nitride, low purity of the obtained product, and coarse and uneven grain size, and can simultaneously prepare micron-level powder and nano-level powder by partitioning.

The application provides a cement-based zinc ion hybrid capacitor, a preparation method thereof and application of the capacitor in an energy storage device. The cement-based zinc ion hybrid capacitor comprises an active carbon positive electrode, a zinc foil negative electrode and a composite air-entraining mortar interlayer arranged between the two electrodes. The active carbon positive electrode is active carbon loaded on a carrier with good conductivity, and the carrier is any one of carbon-based materials such as carbon felt, carbon fiber and graphite plate or any one of foils, meshes and foams of metals such as stainless steel, copper, titanium and nickel and alloys thereof. The composite air-entraining mortar interlayer between the two electrodes is immersed in an electrolyte under negative pressure. The composite air-entraining mortar has interconnected pores, and ions are transmitted through the electrolyte in the pores and participate in electrode reactions. The application mainly provides a porous cement-based solid electrolyte based on a composite air-entraining technology and a structural electrochemical energy storage device, and the structural energy storage device can simultaneously have good energy storage characteristics and mechanical properties.

The invention relates to the technical field of battery testing, and provides a flow battery bipolar plate flow channel diversion performance testing device, which comprises an intelligent testing galvanic pile, which is composed of a plurality of detachable flow channel units, each flow channel unit comprises a bipolar plate and two flow channel frames, the flow channel frames adopt a modular design, and the flow channel units are connected with the intelligent testing galvanic pile; a plurality of micro pressure sensors, temperature sensors and flow sensors are embedded in the shell; the intelligent liquid path system comprises a plurality of independent liquid path circulating units, and each unit is composed of a liquid tank, an intelligent liquid pump, a liquid supply pipeline and a liquid return pipeline; a plurality of independent test chambers are arranged in the multifunctional shell, and a temperature and humidity control system and an intelligent drainage system are arranged in the shell; and the data acquisition and analysis system consists of a high-performance computer, a data acquisition card, a signal amplifier and analysis software. The problems that in the prior art, the local flow characteristic of the electrolyte on the surface of the carbon felt is difficult to accurately evaluate, and the requirement of optimizing flow channel design on refined data cannot be met are solved.

The invention discloses a carbon fiber-based solar photo-thermal conversion material as well as a preparation method and application thereof, relates to the technical field of solar photo-thermal conversion materials, and solves the problems of poor mechanical performance and photo-thermal conversion performance of an existing photo-thermal conversion material. The preparation method comprises the following steps: thermally mixing a polyvinyl alcohol sodium alginate mixed solution, a graphene oxide solution and a cross-linking agent aqueous solution to prepare a cross-linking precursor solution; the preparation method comprises the following steps: by taking a carbon felt as a substrate, injecting a crosslinking precursor solution into the substrate by utilizing a vacuum infusion process, infiltrating the carbon felt, performing aging crosslinking, and then performing directional freeze drying to obtain a modified carbon felt; preparing an electroplating solution by using copper sulfate, sodium potassium tartrate tetrahydrate, disodium hydrogen phosphate and formaldehyde, adjusting the pH value by using NaOH, growing copper on the surface of the modified carbon felt by using an electroplating process, and carrying out vacuum drying; and putting the modified carbon felt subjected to vacuum drying after electroplating into a tubular furnace to obtain the carbon fiber-based solar photothermal conversion material. The method has a wide application prospect in the field of seawater evaporation desalination.

The invention relates to the technical field of microbial electrochemistry, in particular to a microbial fuel cell self-driven microbial electrolysis cell system and application thereof. The microbial fuel cell self-driven microbial electrolysis cell system comprises a microbial electrolysis cell (MEC) and a microbial fuel cell (MFC) for supplying power to the MEC; an anode electrode of the MFC is a mixed strain immobilized modified carbon felt electrode, and a cathode electrode of the MFC is a modified carbon felt electrode; an anode electrode and a cathode electrode of the MEC are independently selected from one of a modified carbon felt electrode or a mixed strain immobilized modified carbon felt electrode; the mixed strain is a strain obtained by mixing shewanella and sludge bacteria; the anode electrode of the MEC is connected with the cathode electrode of the MFC, and the anode electrode of the MFC is connected with the cathode electrode of the MEC; the bipolar chambers of the MFC are both in an anaerobic state, and the bipolar chambers of the MEC are both in an anoxic state. The advantages of an MFC-MEC system are fully utilized, external power supply is not needed, the MFC supplies energy to the MEC to promote reverse flow of electrons, and electric energy is utilized in situ.

The invention relates to a porous carbon felt structure which comprises a carbon felt plate, a plurality of porous channels are formed in the carbon felt plate, and the axes of the porous channels are perpendicular to the flow direction of electrolyte on the carbon felt plate and parallel to the thickness direction of the carbon felt plate; a long-strip-shaped flow channel parallel to the flow direction of electrolyte is arranged on a traditional carbon felt plate, the proportion of a low-flow-speed area is 78.01%, according to the pore channel carbon felt structure, the pore channels perpendicular to the flow direction of the electrolyte are arranged on the carbon felt plate to serve as the flow channels, the proportion of the low-flow-speed area is reduced to 6.12%, the pressure loss of the electrolyte flowing on the carbon felt plate is effectively reduced, and the service life of the carbon felt plate is prolonged. The flow velocity of the electrolyte on the carbon felt plate is improved, and the uniformity of flow velocity distribution is also remarkably improved.

The invention provides a temperature damage detection method based on an optimized vacuum sintering furnace and a temperature measuring device, and belongs to the related field of heat transfer science, and the method comprises the following steps: optimizing a vacuum sintering furnace structure by adopting different thermal insulation structures, and deducing a one-dimensional performance simulation model of a carbon felt thermal insulation layer; according to the one-dimensional performance simulation model of the carbon felt thermal insulation layer, the temperature rise curve and the workpiece temperature, the value range of the thickness of the carbon felt thermal insulation layer at different sintering temperatures is calculated by utilizing a reverse simulation principle, and then the optimal thickness of the carbon felt thermal insulation layer is obtained in the value range of the thickness of the carbon felt thermal insulation layer at different sintering temperatures by utilizing forward simulation; and the optimal thickness of the carbon felt heat preservation layer is adopted as the length of the temperature measuring device, the temperature measuring device of the vacuum sintering furnace is constructed, the temperature of the vacuum sintering furnace is measured through the multiple temperature measuring devices, and a temperature damage detection result is obtained according to the measurement result. According to the method, the problem that the temperature in the effective heating area after structure optimization cannot be directly measured due to too high temperature is solved.

The invention provides an indigo electrochemical reduction reactor using a micro-channel carbon felt electrode and an indigo electrochemical reduction reaction method. A reaction device of the reactor comprises a cathode shell, an insulating spacer, a current collector, a micro-channel carbon felt electrode, a diaphragm, an oxygen evolution electrode, an anode channel and an anode shell, a micro-channel network through which a cathode solution flows is arranged in the micro-channel carbon felt electrode; the oxygen evolution electrode and the carbon felt channel electrode are arranged in parallel and are separated by a diaphragm; the current collector clings to the outer surface of the micro-channel carbon felt electrode; the insulating spacer clings to the outer surface of the current collector; the cathode shell clings to the outer surface of the insulating spacer; an anode channel is arranged between the oxygen evolution electrode and the anode shell, and an anode solution channel is arranged in the anode channel; and heat exchange pipelines are arranged in the cathode shell and the anode shell. The invention further provides an indigo electrochemical reduction reaction method based on the reactor. According to the invention, direct electro-reduction of indigo can be realized in the presence of a chemical reducing agent.

The invention relates to a coal chemical wastewater treatment device with nano-catalysis coupled with bioelectrochemistry. The invention belongs to the technical field of coal chemical wastewater treatment. The device comprises a pretreatment area, a bioelectrochemical treatment area, a catalyst recovery area and a clear water area which are connected in sequence, a nano Fe3O4 / TiO2 composite catalyst filling layer and a microporous aeration device are arranged in the pretreatment area; a biological anode region of the biological electrochemical treatment region adopts a graphene modified carbon brush, and a biological cathode region of the biological electrochemical treatment region adopts a sulfur-doped carbon felt; and the catalyst recovery area adopts a high-gradient permanent magnetic roller and is matched with a pulse backwashing system. The treatment cost of each ton of water is reduced to 25-35 yuan, and the cycle life of the catalyst is gt; the time is 200 times; the sulfur can be reused in a desulfurization process of a sewage treatment plant, so that the medicament cost is reduced; the carbon emission is reduced by 60%; the COD removal rate is not less than 95%, the total phenol removal rate is not less than 98%, and the total nitrogen removal rate is not less than 90%; energy consumption is reduced by 40% compared with a traditional electrochemical method, and the catalyst recovery rate is gt; 95%.

The invention provides a self-supporting carbon-based material loaded with iron nanoparticles as well as a preparation method and application of the self-supporting carbon-based material, and belongs to the technical field of preparation and application of an electrocatalyst for removing nitrate in sewage. The preparation method of the self-supporting carbon-based material loaded with the iron nanoparticles comprises the following steps: providing a carbon felt subjected to acid pickling and water bath heating; the method comprises the following steps: mixing an iron precursor and urea in a solvent to obtain a mixed solution containing iron salt; and mixing the carbon felt with the mixed solution containing the iron salt, and carrying out a hydrothermal reaction to obtain the self-supporting carbon-based material loaded with the iron nanoparticles. When the iron nanoparticle-loaded self-supporting carbon-based material provided by the invention is used as a cathode for electro-catalysis of nitrate-containing wastewater, a good removal rate and ammonia nitrogen selectivity are achieved, and the catalyst can keep relatively high nitrate nitrogen removal and ammonia nitrogen production effects under the conditions of acidity, neutrality, alkalinity and different initial nitrate concentrations; the method has the advantages of high removal efficiency, good ammonia nitrogen selectivity, strong stability and the like.

The invention discloses a flow battery packaging method which comprises the following steps: step 1, uniformly spraying hot melt adhesive layers on two sides of all electrode frames respectively to obtain an adhesive frame assembly A; 2, the hot melt adhesive layers on the two sides of the rubber frame assemblies A are heated to the bonding temperature, proton membranes are bonded between every two adjacent rubber frame assemblies A through the hot melt adhesive layers in a press fit mode, and bipolar plates are bonded on the two sides, away from each other, of the two rubber frame assemblies A located on the outermost side through the hot melt adhesive layers in a press fit mode; and meanwhile, a carbon felt is mounted in the frame body of the rubber frame assembly A, so that the flow battery packaging structure is obtained.

The invention discloses a preparation method of a modified zinc-bromine flow battery carbon felt negative electrode and the carbon felt negative electrode prepared by the method, and belongs to the field of zinc-bromine flow batteries. According to the method, after the carbon felt is soaked in a mixed solution of cuprous sulfate, water and acetonitrile, the acetonitrile is gradually evaporated from the solution through heating, the cuprous sulfate is gradually subjected to disproportionation reaction, and the copper elementary substance generated by the disproportionation reaction of the cuprous sulfate is deposited on the surface of the carbon felt, so that the purpose of loading the modified carbon felt with the copper elementary substance is achieved. The copper elementary substance is relatively stable in chemical property and has good zinc affinity, and the copper elementary substance is loaded on the surface of the carbon felt, so that the overpotential of zinc nucleation can be reduced, and reaction active sites on the surface of the carbon felt are increased. Besides, relatively strong acting force exists between copper and zinc, so that uniform deposition / stripping of zinc in the charging and discharging process is facilitated, a more uniform zinc deposition layer is formed on the surface of the carbon felt, formation of zinc dendrites is reduced, and the electrochemical performance of the zinc-bromine flow battery is improved.

The invention provides silicon nitride and aluminum nitride powder and a preparation method, and relates to the technical field of ceramic powder. The preparation method of the silicon nitride and aluminum nitride powder comprises the following steps: mixing aluminum powder and aluminum nitride raw powder to obtain a first mixture; mixing silicon powder, silicon nitride raw powder and ammonium salt to obtain a second mixture; paving the first mixture and the second mixture in a material frame padded with a carbon felt, and separating the first mixture from the second mixture by using the carbon felt; the material frame is placed in a self-propagating reaction kettle, nitrogen is introduced after vacuumizing, and the first mixture is ignited so as to induce a combustion synthesis reaction of the second mixture; and after the combustion synthesis reaction, cooling to room temperature, releasing the pressure in the self-propagating reaction kettle, taking out a synthetic product, and grinding the synthetic product to obtain silicon nitride powder and aluminum nitride powder. The purity of the powder material can be improved.

The invention relates to the technical field of alkaline zinc-manganese flow batteries, in particular to an alkaline flow battery based on carbon felt surface functionalization and electrolyte additive collaborative optimization. The surface functionalization of the carbon felt is that the carbon felt is modified by nitrogen-doped carbon dots, so that the pore size of the carbon felt is increased, the pore volume, the specific surface area and the hydrophilicity of the carbon felt are improved, the wettability of an electrolyte and the adsorption capacity to zinc atoms can be enhanced, and more zinc deposition sites are provided. Sodium gluconate is selected as an additive and is coordinated with zinc ions in the negative electrode electrolyte, so that the solvation structure of the zinc ions is changed. Through cooperative regulation and control of carbon felt modification and sodium gluconate, the zinc deposition morphology is changed, the zinc deposition is compact and uniform, the performance of the battery is improved, and the cycle life of the battery is prolonged. The invention has the advantages of outstanding performance, safety, environmental protection, low price and the like.

The invention discloses a treatment method for synchronously removing ammonia nitrogen and organic matters in biogas slurry, which comprises the following steps: the biogas slurry is subjected to electrochemical treatment and ultraviolet radiation treatment at the same time, the anode adopted in the electrochemical treatment comprises a ruthenium iridium titanium electrode, and the cathode comprises an iron-doped modified carbon felt electrode. The preparation method of the iron-doped modified carbon felt electrode comprises the following steps: a, carrying out ultrasonic cleaning on a carbon felt; b, the cleaned carbon felt is soaked in acid liquor to be activated; c, dipping the activated carbon felt in a polytetrafluoroethylene solution; d, coating one side of the carbon felt treated in the step c with a solution containing carbon powder and polytetrafluoroethylene, and drying to obtain a carbon felt containing a catalyst layer; and e, dropwise adding an iron-containing precursor solution onto the carbon felt catalyst layer, and calcining to obtain the iron-doped modified carbon felt electrode. The treatment method provided by the invention realizes in-situ generation and activation of hydrogen peroxide, enhances removal of organic pollutants, reduces consumption of active chlorine by organic matters, and realizes synchronous removal of ammonia nitrogen and organic matters in the biogas slurry.

The invention belongs to the technical field of redox flow batteries, and particularly discloses a high-performance hierarchical pore carbon felt electrode for a flow battery and a preparation method of the high-performance hierarchical pore carbon felt electrode for the flow battery. Zinc salt or bismuth salt is dissolved in a solvent, and a precursor solution is obtained through stirring and ultrasonic treatment; dipping the pre-oxidized felt into the precursor solution, performing ultrasonic treatment, taking out and drying; and carbonizing the dried carbon felt at a high temperature in a protective atmosphere, treating with nitric acid, cleaning with deionized water, and drying to obtain the hierarchical porous carbon felt electrode with high activity and high specific surface area. The prepared high-performance hierarchical pore carbon felt electrode has a multi-scale pore structure and rich active sites, the specific surface area, the conductivity and the catalytic activity are remarkably improved, meanwhile, the hydrophilicity is optimized, and the electrolyte wettability is enhanced. The method is short in technological process, high in efficiency, low in cost and suitable for large-scale production and industrial application of the high-performance carbon felt electrode.

The invention discloses a composite material and application thereof in electrochemical carbon dioxide capture, and belongs to the technical field of electrochemistry and carbon dioxide capture. The composite material provided by the invention comprises a carbon felt and a 1, 4-naphthoquinone compound, the 1, 4-naphthoquinone compound is loaded on the carbon felt; the 1, 4-naphthoquinone compound comprises at least one of 1, 4-naphthoquinone, 2-methyl-1, 4-naphthoquinone or 2, 3-dimethyl-1, 4-naphthoquinone, and the compound is a compound of the 1, 4-naphthoquinone, the 2-methyl-1, 4-naphthoquinone and the 2, 3-dimethyl-1, 4-naphthoquinone. In the composite material disclosed by the invention, a 1, 4-naphthoquinone structure of the 1, 4-naphthoquinone compound can realize specific capture of CO2 through a reversible oxidation-reduction reaction, a carbon felt three-dimensional porous framework provides a smooth channel for CO2 mass transfer and electron transmission, and the 1, 4-naphthoquinone structure and the carbon felt three-dimensional porous framework cooperate with each other to solve the problems of low capture capacity, poor stability and high energy consumption of a traditional carbon material; therefore, the method has a good application prospect in electrochemical carbon dioxide capture.

The invention belongs to the technical field of microbial fuel cells, and particularly relates to a microbial fuel cell, a carbon-based anode and a preparation method of the carbon-based anode. Preparing a polyaniline / dopamine modifier from an aniline monomer and dopamine hydrochloride, and modifying the polyaniline / dopamine modifier on a carbon felt electrode to form a PANI-DA / CF anode; the preparation method comprises the following steps: preparing flower-like Fe2O3 nanoparticles by adopting a hydrothermal method, and electrochemically depositing the flower-like Fe2O3 nanoparticles on a PANI-DA / CF electrode to prepare a Fe2O3 / PANI-DA / CF anode; according to the microbial fuel cell disclosed by the invention, the maximum power density of the phenol wastewater anolyte reaches 4594 + / -97 mW / m < 2 > and is improved by 83.1% compared with that of a carbon felt anode MFC (Microbial Fuel Cell); after operation for 96 hours, the phenol degradation rate reaches 99.4%; and the electricity generation performance is still kept stable after three months of operation. The Fe2O3 / PANI-DA / CF anode provided by the invention improves the power density output of the microbial fuel cell and the wastewater treatment efficiency.

The invention discloses a carbon felt electrode for a zinc-bromine flow battery as well as a preparation method and application, and belongs to the technical field of zinc-bromine flow battery production, the method comprises the following steps: immersing a carbon felt into an acid solution for chemical etching, etching uniform grooves in the carbon fiber surface of the carbon felt, cleaning and drying to obtain a pretreated carbon felt; the preparation method comprises the following steps: dissolving tin salt and nickel salt in deionized water, and adding a hydrolysis inhibitor to obtain a precursor solution; and immersing the pretreated carbon felt into the precursor solution, carrying out electro-deposition under constant current by adopting a direct-current power supply by taking the re-selected untreated carbon felt as a counter electrode, washing the pretreated carbon felt subjected to electro-deposition with water, and drying for the second time to obtain the carbon felt electrode for the zinc-bromine flow battery. By utilizing the zinc affinity of Sn and Ni, zinc is preferentially deposited on Sn and Ni sites of the carbon felt electrode, the deposition depth is obviously enlarged, the zinc deposition space is optimized, the zinc deposition area capacity is effectively improved, and the problem that the surface capacity of the carbon felt electrode is limited is solved.

The invention belongs to the field of batteries, and provides a high-current-density long-circulation zinc-bromine flow battery negative electrode electrolyte and battery preparation. The battery comprises a positive electrode, a negative electrode, a diaphragm, positive and negative electrolyte, a current collector and an end plate, the diaphragm is a cation exchange membrane; and the negative electrode electrolyte comprises a metal salt, a supporting electrolyte, an organic carboxylate complexing agent and deionized water. The organic carboxylate complexing agent disclosed by the invention can be adsorbed on a porous electrode, and by increasing zinc deposition sites, inhibiting two-dimensional interface diffusion and promoting zinc mass transfer, zinc dendrites are relieved, and the zinc-bromine flow battery with high current density and long circulation stability is realized.

The embodiment of the invention relates to the technical field of flow batteries, and provides a carbon felt electrode for a flow battery and a preparation method thereof, and the preparation method comprises the following steps: preparing a mixed salt solution containing first metal ions and second metal ions; preparing an alcohol solution containing 2-methylimidazole; adding the mixed salt solution into the alcohol solution, and uniformly mixing to obtain a precursor solution; immersing the cleaned carbon felt into the precursor solution for a first time, then taking out the carbon felt, cleaning the carbon felt with an alcohol solvent, and drying the carbon felt to obtain a ZIF carbon felt; and putting the ZIF carbon felt into a tube furnace protected by inert gas, and carrying out heat treatment at a preset temperature for a preset second time to obtain the carbon felt electrode. The invention provides a novel bimetallic catalyst, and the interaction between metals can promote the adsorption and activation of reactants on metal atoms and promote the proceeding of the reaction. In the nitrogen-carbon catalyst formed by carbonizing ZIF, metal ions are uniformly dispersed, and agglomeration of the metal ions in the synthesis process is prevented.

The present disclosure provides a bipolar plate for a flow battery and a flow battery. The flow battery comprises a first carbon felt, a second carbon felt, and a bipolar plate, and the bipolar plate is located between the first carbon felt and the second carbon felt. Surfaces of the bipolar plate in contact with the first carbon felt and the second carbon felt are provided with grooves, and the grooves are filled with an adhesive. Fibers extending out of the grooves are provided in the grooves. The technical solution provided in the present invention forms fiber layers on the flocked surfaces of the bipolar plate. The fiber layers serve as contact surfaces with the carbon felts, and can significantly increase the friction therebetween. After 5,000 cycles of charge and discharge in a stack, the carbon felts did not slip or shift. The fiber layers can further reduce the contact resistance between the carbon felts and the bipolar plate by 30% or more, and improve the energy efficiency of the stack by 3% to 5%.

The invention discloses a TiO2 / carbon felt photo-thermal-catalytic material, a preparation method and a photo-thermal interface evaporation purification device applying the TiO2 / carbon felt photo-thermal-catalytic material, and the preparation method comprises the following steps: S1, slowly adding glacial acetic acid and Ti (OC4H9) 4 into absolute ethyl alcohol to form a solution A; adding deionized water into the other part of absolute ethyl alcohol to form a solution B; s2, uniformly spraying the solution A onto the CF by using a spray gun, and standing for 2 hours, so that the solution A is fully absorbed by the CF; s3, after standing, a B solution is sprayed to the CF on the heating plate by using the spray gun, Ti (OC4H9) 4 in the CF and the B solution are subjected to a hydrolysis reaction, and then high-temperature aging is performed for 8 h; and S4, completely drying the aged CF in a drying oven, and finally carrying out high-temperature calcination in a tubular furnace for 2 hours to obtain the TiO2 / carbon felt photo-thermal-catalytic material. The TiO2 / carbon felt photo-thermal-catalytic material synthesized in the limited range is firm in catalyst loading, not prone to falling off and high in photocatalytic degradation capacity and light absorption capacity; and the applied photo-thermal interface evaporation purification device has the advantages of high evaporation efficiency, high purification capacity and the like.

The invention relates to a carbon felt for a flow battery as well as a preparation method and application thereof, and belongs to the technical field of production of organic energy storage flow batteries. The method comprises the following steps: activating a carbon felt in a concentrated nitric acid solution to obtain a carbon felt I; dipping the carbon felt I in a transition metal salt solution, and then carrying out drying treatment to obtain a carbon felt II; in the presence of hydrogen, carrying out reduction treatment on the carbon felt II to obtain a carbon felt III; growing carbon nanotubes on the surface of the carbon felt III through a CVD method to obtain a carbon felt IV; and purifying the carbon felt IV in a halogen atmosphere to obtain the carbon felt for the flow battery. The method provided by the invention is simple and easy to implement, low in cost and high in controllability, the carbon felt material with a high specific area can be prepared, when the carbon felt material is used for preparing the flow battery, the coulombic efficiency, the voltage efficiency and the energy efficiency of the flow battery can be remarkably improved, and the cycle performance of the battery is better.

The invention relates to an electrochemical generation device and a method for preparing hydrogen peroxide, the electrochemical generation device comprises an electrolysis module, and the electrolysis module comprises an electrolytic tank, an anode and an amphiphilic cathode; the amphiphilic cathode comprises a carbon felt substrate and active components loaded on the carbon felt substrate, and the active components comprise oxidized carbon black and polytetrafluoroethylene. According to the electrochemical generation device, under the condition that gas compression equipment is not additionally arranged, the interface mass transfer and three-phase interface catalytic performance of the amphiphilic cathode in the electrocatalytic oxygen reduction process is effectively improved, the electrode catalytic efficiency is improved, meanwhile, electrode surface denaturation and inactivation are reduced, and the yield of hydrogen peroxide is effectively improved.

The invention discloses a redox flow battery stack and an electrode frame, which are applied to the technical field of redox flow batteries, and comprise a main body plate with a liquid inlet and a liquid outlet, a shunting flow channel which is arranged on the main body plate and is provided with a plurality of shunting ports, and an electrochemical reaction area which is arranged between a liquid inlet shunting flow channel and a liquid outlet shunting flow channel, the liquid inlet is communicated with the liquid inlet end of the electrochemical reaction area through the liquid inlet shunting flow channel, and the liquid outlet is communicated with the liquid outlet end of the electrochemical reaction area through the liquid outlet shunting flow channel; the at least one uniform distribution pipe is arranged in the electrochemical reaction area and is used for supporting a carbon felt electrode, a liquid inlet opening of each uniform distribution pipe is connected with a shunting opening of the liquid inlet shunting flow channel, and a liquid outlet opening of each uniform distribution pipe is connected with a shunting opening of the liquid outlet shunting flow channel; and the side wall of the uniform distribution pipe is provided with a liquid separation port communicated with the electrochemical reaction area. And the uniform contact between the electrolyte and the carbon felt electrode can be realized, and the fastening support of the carbon felt electrode can also be realized.

The invention discloses a method for preparing component-adjustable crude synthesis gas through high-temperature pyrolysis of an out-of-service fan blade. The method comprises the following steps: crushing the out-of-service fan blade, and filtering to obtain blade powder; the blade powder obtained in the step (1) is wrapped in a conductive carbon felt, Joule heat high-temperature treatment is conducted on the conductive carbon felt, the fan blade powder is pyrolyzed, the pyrolysis temperature is 800-2500 DEG C, gas generated by pyrolysis is collected, and crude synthesis gas is obtained and comprises hydrogen, methane, small molecule hydrocarbon gas, carbon monoxide and carbon dioxide; along with the increase of the pyrolysis temperature, the volume ratio of the carbon monoxide in the crude synthesis gas is increased in a gradient manner. According to the method, the retired fan blade can be efficiently pyrolyzed, the component proportion of the crude synthesis gas can be regulated and controlled, and the yield of the synthesis gas is relatively high.