641results about "Fuel cell details" patented technology

The invention relates to the technical field of hydrogen fuel cells, in particular to a high-power hydrogen fuel cell with an efficient heat dissipation structure. Comprising a limiting module, and the limiting module is provided with a plurality of groups of limiting bins capable of installing the hydrogen fuel cell, and a leading-in channel and a leading-out channel capable of leading a cooling medium into the limiting bins and leading the cooling medium out of the limiting bins respectively; the cooling module is fixedly arranged at the top of the limiting module, the output end of the cooling module communicates with the leading-in channel, and the cooling module is used for inputting a cooling medium into the leading-in channel; the heat dissipation module is installed in the limiting module in an embedded mode, and the heat dissipation module is composed of a plurality of sets of heat dissipation frames which are spliced with one another; each heat dissipation frame is provided with a lead-in port and a lead-out port which are used for leading in and leading out a cooling medium; heat energy can be effectively gathered, and dynamic heat dissipation can be conducted according to the use state.

The invention provides a low-cost flow battery and an application thereof, a redox active substance of a positive electrode electrolyte of the low-cost flow battery contains a hydroxylamine cyclic structure group with hindered amine, and the hydroxylamine cyclic structure group with hindered amine is preferably selected from 1-hydroxy-2, 2, 6, 7, 8-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, one or more of a 1-oxo-2, 2, 6, 6-tetrasubstituted piperidine group, a 1-oxo-2, 2, 6, 6-tetrasubstituted piperidine group, a 1-oxo-2, 2, 6, 6-tetrasubstituted piperidine group, and a 1-oxo-2, 2, 6, 6-tetrasubstituted piperidinium group; a redox active substance of the negative electrode electrolyte contains one or more of a titanium element, a vanadium element, a chromium element, an iron element and a zinc element. The low-cost flow battery has the advantages of high output voltage, high energy density, environment friendliness and low cost, and has good application prospects and large-scale popularization potential in the field of energy storage.

The invention provides a platinum-carbon catalyst taking hollow carbon nanospheres as a carrier and a preparation method of the platinum-carbon catalyst. The method comprises the following steps: adding a polymer monomer into a nano template dispersion liquid with a uniform size; then adding a proper amount of platinum salt into the solution to obtain a mixed solution, and stirring to react for 0.5-30 hours to obtain a reaction product; and annealing the reaction product, and then removing the nano template to obtain the platinum-carbon catalyst. The obtained platinum-carbon catalyst takes the hollow carbon nanospheres as a carrier and has a larger specific surface area, the platinum catalyst is loaded on the surfaces of the carbon nanospheres and can be in better contact with an electrolyte, and the obtained catalyst has good electrochemical activity and shows excellent electro-catalytic hydrogen evolution performance and oxygen reduction performance; and the related preparation method is simple and reliable, is suitable for preparation of an electrocatalytic hydrogen evolution electrode and an oxygen reduction electrode, and has a good application prospect in the fields of proton exchange membrane electrolytic cells, hydrogen fuel cells and the like.

To provide an electrolyte for a redox flow battery that can reduce deposition of a metal forming an organometallic complex.SOLUTION: There is provided the electrolyte for a redox flow battery, including: an organometallic complex; and an auxiliary complexing agent including at least one type selected from the group consisting of a polycarboxylic acid, a polyol, and an aminocarboxylic acid.SELECTED DRAWING: Figure 1

The invention discloses a thermally stable gas diffusion layer material and a fuel cell, and relates to the field of fuel cells. When the heat-stable gas diffusion layer material is prepared, short-cut polyacrylonitrile carbon fibers are subjected to papermaking and then cured, and 3-aminothiophene is oxidized and grafted to prepare a modified carbon paper base layer; the preparation method comprises the following steps: carrying out a reaction on a single-layer graphene oxide nanosheet, 6-amino-2-mercaptobenzothiazole and 3-aminoethyl thiophene to prepare a modified single-layer graphene oxide nanosheet; the preparation method comprises the following steps: reacting polyvinylidene fluoride powder, 3-allyl thiophene and single-ended vinyl silicone oil to prepare a modified polyvinylidene fluoride emulsion; and uniformly mixing the modified single-layer graphene oxide nanosheet, a modified polyvinylidene fluoride emulsion and isopropanol, spraying on the modified carbon paper base layer, and reacting with 3, 4-ethylenedioxythiophene to prepare the thermally stable gas diffusion layer material. The thermally stable gas diffusion layer material prepared by the method has excellent porosity, thermal stability, conductivity and corrosion resistance.

The invention relates to an electrolyte precursor of an iron-chromium flow battery, an electrolyte, a preparation method and an application. The electrolyte precursor comprises a basic electrolyte and a stabilizer; the stabilizer comprises an indium-containing compound and amino acid. According to the electrolyte precursor of the iron-chromium flow battery, provided by the invention, the combination of the indium-containing compound and the amino acid is used as a stabilizer of the electrolyte, and under the synergistic matching condition of the indium-containing compound, the amino acid and chromium ions can be subjected to complex reaction, so that the inactivated hydrated chromium ions are converted into active chromium ions, and the chromium ions are converted into active chromium ions. Therefore, the reaction activity of the electrolyte is improved, and the cycling stability of the electrolyte is improved.

To provide a fuel cell in one-compartment.SOLUTION: In a fuel cell, a cathode electrode made of metallic copper and a metal anode having a lower electrode potential than copper are opposed to each other in an electrolytic solution containing hydrogen peroxide, hydrogen gas is generated on the surface of the copper cathode in an electrolyte containing hydrogen peroxide, and reacts with oxygen supplied from hydrogen peroxide, and causes power generation reaction without supplying hydrogen from the outside. The configuration of the present invention can provide a novel and useful configuration as a one-compartment hydrogen fuel cell or a hydrogen peroxide fuel cell.SELECTED DRAWING: Figure 1

The utility model discloses a packaging structure of an air-cooled galvanic pile system, and relates to the technical field of air-cooled fuel cells. The device comprises a packaging housing, two adjusting mechanisms and a configuration mechanism, wherein the two adjusting mechanisms and the configuration mechanism are arranged on the packaging housing. According to the utility model, by arranging the adjusting mechanism, during cold start, the auxiliary heating assembly can be started, so that the air-cooled galvanic pile system can quickly reach the required temperature and the loss is reduced, and then, a hydraulic cylinder I can be started to be matched with a U-shaped block and a connecting rod I, so that a plurality of rotating blocks can rotate; during high-power operation, the large opening and closing angle of the fan can be adjusted, the motor is started at the same time, the motor drives the rotating shaft and the fan blades to rotate, meanwhile, when the fan blades rotate, the fan blades can rotate, and the fan blades can be driven to rotate. And air outside the packaging housing can be sucked into the packaging housing to cool the air-cooled galvanic pile system, so that the heat dissipation efficiency is improved.

The application provides a low-cost flow battery and application thereof, and the low-cost flow battery contains a hydroxylamine cyclic structure group with a hindered amine in a redox active material of a positive electrolyte of the low-cost flow battery, the hydroxylamine cyclic structure group with the hindered amine is preferably one or more of a 1-hydroxyl-2,2,6,6-tetrasubstituted piperidine group, a 1-oxygen radical-2,2,6,6-tetrasubstituted piperidine group and a 1-oxo-2,2,6,6-tetrasubstituted piperidinium group; and the redox active material of a negative electrolyte of the low-cost flow battery contains one or more of titanium elements, vanadium elements, chromium elements, iron elements and zinc elements. The low-cost flow battery has the advantages of high output voltage, high energy density, environmental friendliness and low cost, and has good application prospect and large-scale promotion potential in the field of energy storage.

The invention relates to the technical field of high polymer materials, and discloses a double quaternized QPVBC / QBPEI anion exchange membrane and a preparation method and application thereof.The preparation method comprises the steps that 4-vinyl benzyl chloride, an azo initiator and a free radical polymerization reaction solvent are subjected to free radical polymerization, then quenching, sedimentation and drying are conducted, and poly 4-vinyl benzyl chloride is obtained; the preparation method comprises the following steps: carrying out quaternization on poly (4-vinylbenzyl chloride), a first quaternization reagent and a first organic solvent, and then curing to obtain quaternized poly (4-vinylbenzyl chloride); carrying out condensation reflux on the branched polyethyleneimine, a second quaternization reagent and a second organic solvent, and then carrying out rotary evaporation and drying to obtain quaternized branched polyethyleneimine; and carrying out stirring and cross-linking reaction on the quaternized poly (4-vinyl benzyl chloride), the quaternized branched polyethyleneimine and a third organic solvent to obtain the double quaternized QPVBC / QBPEI anion exchange membrane. The double quaternized QPVBC / QBPEI anion exchange membrane disclosed by the invention has excellent anion transmission capacity and has potential application value in the field of fuel cells.

An electrochemical cell (e.g., a rechargeable solid state battery) includes a cathode, an anode, and a solid state electrolyte disposed between the cathode and the anode. The anode includes an anode material having a plurality of voids. In some embodiments, the cathode comprises lithium, and the anode is configured such that lithium metal is deposited in the plurality of voids during charging of the electrochemical cell. In some embodiments, the anode includes a shrinkage sensitive surface that controls the interaction between lithiation and lithium plating. The electrochemical cells disclosed herein are advantageous in that they provide improved battery cycle performance as well as excellent power and energy density.

The disclosure provides batteries that have long-duration or long-lifetime for energy storage applications. In one aspect, the disclosure provides perylene diimide molecules that are water soluble and can be used as energy storage materials. In operation, the perylene diimide molecules are oxidized in an anode chamber and the electrons released in the oxidation process flow to the cathode chamber where they reduce a molecule in the cathode chamber. The perylene diimide molecules in accordance with many embodiments are highly compatible with polymeric materials that are inexpensive and easy to process, hence allowing for significantly reduced manufacturing costs.

Method for disassembling a fuel cell Method for disassembling a fuel cell comprising: a) providing a fuel cell comprising at least one stack comprising two membrane-electrode assemblies and a bipolar plate sandwiched between the membrane-electrode assemblies, each membrane-electrode assembly comprising an anode comprising an anodic gas diffusion layer and an anodic layer, a cathode comprising a cathodic gas diffusion layer and a cathodic layer, and a proton exchange membrane sandwiched between the anode and the cathode; b) introducing into the fuel cell a mixture comprising a disassembly fluid in the gaseous state capable of inducing a volume expansion of the membrane and a gas inert with respect to the anodic layer and the cathodic layer;and c) bringing the membrane-electrode assemblies into contact with the mixture, the absolute disassembly pressure of the mixture being strictly greater than 100 kPa. Figure for abstract: None;

The utility model discloses an integrated liquid storage barrel based on a zinc-bromine flow battery, and belongs to the field of zinc-bromine flow batteries, the integrated liquid storage barrel comprises a liquid storage barrel shell, a liquid storage barrel upper cover, a zinc side pipeline group and a bromine side pipeline group, an isolation plate is arranged in the liquid storage barrel shell, and the liquid storage barrel is divided into two independent spaces, namely a zinc side liquid storage barrel and a bromine side liquid storage barrel, by the isolation plate; an overflow port is formed in the upper end of the isolation plate; the zinc side pipeline group and the bromine side pipeline group are arranged on the upper cover of the liquid storage barrel; a pipeline extending downwards is arranged on the back surface of the upper cover of the liquid storage barrel; a rotational molding processing technology is changed into an injection molding technology, so that the downward extending pipeline in the barrel can be subjected to injection molding; and the injection molding process can improve the size precision, and subsequent automatic assembly is facilitated.

The invention discloses a hydrogen fuel cell bipolar plate with a convenient installation assembly and an installation method, which are applied to the technical field of hydrogen fuel cell bipolar plates, and the technical scheme is characterized in that the hydrogen fuel cell bipolar plate comprises an anode plate, a cathode plate and a membrane electrode; each of the anode plate and the cathode plate comprises a base body and inclined guide blocks, the inclined guide blocks are symmetrically and fixedly connected to two sides of the base body in an outward expanding and inclined manner, a positioning fixing block parallel to the base body is fixedly connected to each inclined guide block, and a positioning interlocking structure is arranged on each positioning fixing block; the membrane electrode comprises a base membrane part and self-stretching blocks which are symmetrically and fixedly connected to the two sides of the base membrane part in a protruding mode and are of a polygonal structure, and a base body is provided with self-stretching grooves matched with the self-stretching blocks; the invention has the technical effects of simple structure and convenience in installation.

The invention discloses a negative electrode electrolyte in an aqueous organic flow battery and the aqueous organic flow battery, and belongs to the technical field of aqueous flow batteries. According to the invention, one or more inorganic cations are introduced into the negative electrode active material system of the neutral aqueous organic flow battery to serve as the functional additive, so that the overall conductivity of the electrolyte and the cycling stability of the battery in the operation process are remarkably improved. The inorganic cation addition strategy not only enhances the migration speed of ions in an electric field, but also effectively inhibits possible side reactions in the charge-discharge process, and reduces the irreversible loss of active substances, thereby significantly prolonging the cycle life and improving the stability of the battery. The cathode electrolyte optimization method provided by the invention provides a brand new design thought and a feasible solution for constructing the aqueous organic flow battery with high performance and long service life, and has important application value and practical engineering significance.

The present invention discloses a mobile hydrogen emergency power generation system, which belongs to the technical field of hydrogen emergency power generation. It includes a main body, a protective mechanism, a power generation mechanism and a system body, the main body includes a chassis, a pair of mounting frames are fixedly installed on both sides of the chassis, the outer sides of the mounting frames are rotatably connected with moving wheels, shock absorbers are installed at the four corners of the upper end face of the chassis, the protective mechanism includes a placement frame, the four corners of the bottom end of the placement frame are connected to the top of the shock absorber, a panel is installed on the outer side of one end of the placement frame, a pair of storage tanks are installed on one side of the upper end face of the placement frame, and the pair of storage tanks are connected by pipelines, the power generation mechanism includes a power generation box, the power generation box is arranged on one side of the upper end face of the placement frame, and a fuel cell is installed at the bottom end of the internal part of the power generation box; the invention can effectively improve the practicality of the mobile hydrogen emergency power generation system and has high practical value.

The invention relates to the technical field of all-vanadium redox flow batteries, and particularly discloses a composition for promoting continuous production of a vanadium electrolyte and application of the composition. The invention discloses a composition for promoting continuous production of a vanadium electrolyte, which is characterized by specifically comprising the following components in parts by weight: 32-42 parts of concentrated sulfuric acid, 0.8-1.2 parts of a sulfonic acid compound, 0.05-0.15 part of sodium sulfate and 60-66 parts of water, the sulfonic acid compound is selected from any one or more of methanesulfonic acid, ethanesulfonic acid, benzenesulfonic acid, sulfamic acid and p-toluenesulfonic acid. When the composition provided by the invention is used in continuous production of the vanadium electrolyte, the use amount of concentrated sulfuric acid is reduced, vanadium pentoxide can be effectively activated, and the reaction rate is increased; and the produced vanadium electrolyte has excellent electrochemical performance.

The present invention relates to a laminate of multiple perforated layers each having a two-dimensional periodic structure of openings with said openings having different dimensions. Moreover, the present invention relates to an assembly comprising a bipolar plate and the laminate according to the present invention as well as an electrochemical apparatus comprising the laminate or the assembly according to the present invention.

The utility model discloses a flexible connection heat dissipation fan and a fuel cell, the flexible connection heat dissipation fan comprises a motor and fan blades, the motor comprises a motor assembly, a load switching assembly and an electric control assembly, the motor assembly comprises a stator assembly, a rotor assembly, a front end cover and a rear end cover, the stator assembly is embedded in the front end cover, and the rotor assembly is embedded in the rear end cover. The rotor assembly is located in the stator assembly, the end of a rotating shaft of the rotor assembly extends out of the front end cover and is provided with a permanent magnet assembly A, and the permanent magnet assembly A is covered with a sealing cover; the load switching assembly comprises a load rotating shaft and a permanent magnet assembly B, the permanent magnet assembly B is close to the sealing cover and corresponds to the permanent magnet assembly A, the front shaft end of the load rotating shaft is connected with the permanent magnet assembly B, and the front shaft end of the load rotating shaft is connected with the fan blades. According to the principle of a permanent magnet coupler, the load rotating shaft rotates along with the rotating shaft through the magnetic field effect of the permanent magnet assembly A and the permanent magnet assembly B, then power is transmitted to the fan blades, the sealing effect of the motor is good, and the service life is long.

The invention provides a catalyst coating proton membrane and a preparation method thereof, a membrane electrode and a fuel cell, and belongs to the technical field of fuel cells, the catalyst coating proton membrane comprises a proton exchange membrane and a catalytic material coating attached to the proton exchange membrane; the preparation slurry of the catalytic material coating comprises graphene aerogel, a catalyst, perfluorinated sulfonic acid resin and a dispersing solvent; the doping amount of the graphene aerogel in the preparation slurry of the catalytic material coating is 1-3wt%. By coupling the characteristics of the graphene carbon aerogel, the catalyst and the perfluorosulfonic acid resin, the rapid dynamic response of the fuel cell to the variable load is realized, and the dynamic response problem is solved from the membrane electrode level.

The invention discloses a semi-open type deep sea subsurface buoy sodium borohydride fuel cell cabin which comprises a pressure-resistant shell, and a seawater desalination membrane separation device, an anode fuel raw material storage cabin, a spiral conveyor, an anode fuel dissolution reaction cabin, a direct sodium borohydride fuel cell, a cathode solution storage cabin, a waste liquid storage bag and a lithium battery are arranged in the pressure-resistant shell. The cruising ability of the deep-sea subsurface buoy is greatly improved, the operation ability boundary of the deep-sea subsurface buoy is greatly expanded, and an excellent solution thought is provided for the requirement of deep-sea long-period exploration operation of the base type subsurface buoy. Besides, the advantage of rich water resources in the marine environment is fully utilized, the sodium borohydride powder raw material with very stable physicochemical properties is carried, and seawater is continuously obtained as a solvent, so that the utilization rate of the internal space of the battery cabin is greatly improved.

An electrochemical cell (10) comprises a support body (11), an active hydrogen electrode layer (12), an electrolyte layer (13), and an oxygen electrode layer (15). The support body (11) comprises a hydrogen electrode current collecting layer (20) and a first beam portion (31) and a second beam portion (32) embedded in the hydrogen electrode current collecting layer (20). The active hydrogen electrode layer (12) has an overlapping portion (12a) that overlaps the first beam portion (31) or the second beam portion (32) in a Z-axis direction, and a non-overlapping portion (12b) that does not overlap the first beam portion (31) or the second beam portion (32) in the Z-axis direction.The average particle size of Ni particles contained in the overlapping portion (12a) is smaller than the average particle size of Ni particles contained in the non-overlapping portion (12b).

The invention belongs to the technical field of solid oxide fuel cells, and discloses a perovskite-spinel composite material and application thereof. The perovskite-spinel composite material is prepared from the following raw materials: perovskite powder, spinel powder, an adhesive and a dispersing agent, the structural formula of the perovskite powder is LaxSr (1-x) CoO3, and x is more than or equal to 0.6 and less than or equal to 0.8; the mass ratio of the perovskite powder to the spinel powder is (3-1): 1. The perovskite-spinel composite material provided by the invention can be used in the assembly of a solid oxide fuel cell stack, can be used as a cathode collector layer of a cell and a protective layer of a connector, can effectively improve the electrochemical performance and long-term stability of the solid oxide fuel cell stack, has wide application potential in the field of power generation devices, and can be widely applied to the field of power generation devices. The perovskite-spinel composite material and the solid oxide fuel cell stack can be applied to preparation of auxiliary or power sources of distributed power generation and fixed power stations, vehicles or unmanned aerial vehicles, and the preparation process of the perovskite-spinel composite material and the solid oxide fuel cell stack is simple, easy to operate, low in cost, short in period and suitable for mass production.

The present invention provides an apparatus for homogenizing one or more regions within a plurality of electrochemical cells, the apparatus comprising a plurality of magnetic flux generators, each configured to generate a respective varying magnetic field through at least one of the plurality of electrochemical cells, the plurality of magnetic flux generators and the plurality of electrochemical cells are arranged in an alternating manner.

To suppress bending of an insulating member because the insulation between the separators may not be ensured and misalignment may occur between the layers when the insulating member is bent due to an external force.SOLUTION: A fuel battery cell includes a membrane electrode-gas diffusion layer assembly, a frame-shaped insulating member in contact with the outer periphery of the membrane electrode-gas diffusion layer assembly, and a pair of separators that sandwich the membrane electrode-gas diffusion layer assembly and the insulating member. The separator and the insulating member have protrusions on their outer peripheries within a range where their surfaces contact each other, protruding in a direction perpendicular to the surfaces of the area.SELECTED DRAWING: Figure 3

The application discloses a vanadium-bromine flow battery electrolyte, a preparation method thereof and a flow battery. The electrolyte comprises a positive electrolyte and a negative electrolyte. The positive electrolyte contains water, bromine ions and an additive. The additive is a pyridine derivative and / or an imidazole derivative. The negative electrolyte contains an acid, vanadium ions and water. The preparation method comprises the following steps: mixing a bromine source with water, and then adding the pyridine derivative and / or the imidazole derivative to obtain the positive electrolyte; dissolving a vanadium source with an acid, and then filtering to obtain a filtrate; adding water to the filtrate, and then adjusting the concentration of vanadium ions to a target final concentration to obtain the negative electrolyte. The flow battery comprises the above-mentioned vanadium-bromine flow battery electrolyte, a positive electrode, an ion-conducting membrane and a negative electrode. The application solves the problems of low energy density, high price and cost, zinc dendrite and positive bromine volatilization of the current flow battery by introducing the coupling of a vanadium-based energy storage medium and a bromine oxygen reduction-oxidation couple.

To provide an electrochemical cell, an electrochemical cell device, a module, and a module housing device capable of improving durability.SOLUTION: An electrochemical cell includes a metal plate, an element portion, a porous portion, a sealing material, and a first intermediate portion. The porous portion is located between the metal plate and the element portion. The sealing material is in contact with the metal plate. The first intermediate portion is located between the porous portion and the sealing material. The porous portion includes first particles having a first material. The sealing material includes a second material different from the first material. The first intermediate portion includes the first particles and a second material positioned between the first particles.SELECTED DRAWING: Figure 3

The invention discloses a connector for a flat tube solid oxide fuel cell and a preparation method thereof, belonging to the technical field of fuel cell materials. The preparation method comprises the following steps: (1) mixing ceramic material, nickel oxide, binder, plasticizer, polyethylene glycol, triethanolamine and anhydrous ethanol uniformly to obtain a spray slurry; (2) spraying the spray slurry obtained in step (1) on the surface of a substrate material and drying it, repeating the spraying and drying, and then sintering to obtain the connector. The invention can achieve controllable thickness of the connector by adjusting the slurry ratio and superimposing spraying and drying, and can achieve low-temperature sintering densification at 1350°C, which can greatly reduce losses and save costs in industrial production. The obtained connector has a dense surface without cracks, a tight interface, a uniform thickness, and no penetrating gas pores, and has the characteristics of high air tightness, high density, and high operating voltage.

Liquid membrane cell assemblies are disclosed. In some embodiments, the liquid membrane cell assembly includes an elongate base having opposed first and second end portions and a central portion disposed therebetween. The first and second end portions each includes an elongate body, an electrolyte channel within the body, an electrolyte port fluidly connected to the electrolyte channel, a fuel channel within the body, and a fuel port fluidly connected to the fuel channel. The central portion includes spaced and opposed first and second members that connect the bases of the first and second portions and that horizontally define an open area therebetween. The liquid membrane cell assembly additionally includes an anode adjacent the first and second members, and a cathode adjacent the first and second members such that the base is disposed between the anode and the cathode. The anode and cathode vertically define the open area therebetween.