988results 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 present invention discloses a fuel cell hydrogen circulation component, including a shell, a one-way valve, a position sensor, a circulation pump and a controller. A first cavity, a second cavity, a main channel and a branch channel are provided inside the shell, a first interface and a second interface are provided on the side wall of the first cavity, and a third interface is provided on the side wall of the branch channel. The upper end of the one-way valve is hingedly mounted on the side wall of the second cavity, so that the one-way valve completely blocks the first connecting hole when it droops naturally. The position sensor is installed in the second cavity for sensing the angle of the one-way valve. The position sensor is electrically connected to the controller, and the controller is electrically connected to the circulation pump. Compared with the prior art, the fuel cell hydrogen circulation component of the present invention can not only realize the basic function of the one-way valve to prevent gas backflow, but also be used to monitor the hydrogen flow through the one-way valve. It is not only convenient to calculate the hydrogen utilization rate, but also convenient to realize the closed-loop control of the circulation pump speed according to the hydrogen flow.

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.

The present invention provides a method and use of preparing vanadium electrolyte by extracting vanadium without ammonium and liquid circulation, and the method of preparing vanadium electrolyte by extracting vanadium without ammonium and liquid circulation comprises the following steps: step 1, sodium roasting; step 2, leaching and filtration; step 3, acidification and impurity removal; step 4, reduction; step 5, extraction-stripping and vanadium extraction; step 6, cooling and crystallization; step 7, valence state adjustment of vanadium electrolyte. The vanadium-containing raw materials of the present invention include but are not limited to stone coal, vanadium slag, and vanadium-titanium magnetite. The method of preparing vanadium electrolyte by extracting vanadium without ammonium and liquid circulation of the present invention has the advantages of short production process, low energy consumption, and no wastewater discharge, and can achieve the effect of green and efficient vanadium extraction, providing support for China's goal of achieving carbon neutrality.

To provide a novel microorganism having higher current generating ability, a microbial fuel cell composition and microbial electrolysis cell composition comprising the microorganism, as well as a microbial electrolysis cell and microbial electrolysis cell using the microorganism.SOLUTION: Provided are: a microorganism, a Geobacter sp. strain 60473; a microbial fuel cell composition comprising the Geobacter sp. strain 60473 and an organic substance; a microbial fuel cell in which the Geobacter sp. strain 60473 is used to decompose the organic substance as a fuel; a microbial electrolysis cell composition comprising the Geobacter sp. strain 60473 and the organic substance; and a microbial electrolysis cell in which the Geobacter sp. strain 60473 is used to decompose the organic substance as the fuel.SELECTED DRAWING: None

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 relates to a marine fuel cell system with both power generation and water generation functions and a ship, the system comprises a hydrogen energy fuel cell subsystem, a ship power device, a water storage device, a purification device, a dosing tank, a disinfection device and two water pipelines, electricity and water generated by the hydrogen energy fuel cell subsystem are utilized, and the water pipelines are used for water supply. Electric energy is supplied to a power system of the boat, and water is treated by the purification device, the dosing tank and the disinfection device and is distributed to different water pipelines so as to meet the water quality requirements of different purposes on the boat; by integrating the power generation function and the water generation function, a traditional water generator and a diesel generator are replaced, the operation and maintenance cost is reduced, meanwhile, the energy utilization efficiency is improved, dependence on traditional energy and environmental pollution are reduced, the self-sufficiency of the boat is enhanced, and economical efficiency and environmental protection performance are improved.

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 present invention relates to a cell stack (1) of electrochemical cells (2). The cell stack (1) is connected to a water tank (10), wherein a valve (13, 14) between the water tank (10) and an anode (3) and / or cathode (4) of the electrochemical cells (2) is open. The cell stack (1) is in a resting state.

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.

The invention discloses a metal-air flow battery device based on an ultrasonic air focusing method. A metal-air flow battery belongs to the technical field of mutual crossing of ultrasound and electrochemistry and comprises a piezoelectric plate, a piezoelectric plate and acoustic lens fixing support, an acoustic lens, a metal-air flow battery fixing platform, a connecting platform of the whole device, a metal-air flow battery unit, an electrolyte inlet pipe and an electrolyte outlet pipe. According to the device, a sound field generated by ultrasound acts on the surface of the cathode electrode, so that sound pressure and sound stream jointly act on a three-phase reaction interface, and the oxidation-reduction reaction rate at the three-phase reaction interface is increased. The battery device comprises a piezoelectric plate, a piezoelectric plate driving power supply, an electrolytic bath, a metal anode, an air cathode, an acoustic lens and a peristaltic pump, the device can be combined with other traditional methods for improving the performance of the metal-air battery; the device for improving the performance of the battery can be used as an external component and does not influence the internal structure and the stability of the battery.

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 utility model discloses a preposed hydrogen filter of a hydrogen fuel cell, which comprises a shell, a partition plate, filter components, a sealing plate, a gas inlet pipeline, a gas outlet pipeline and a drainage component, the partition plate is arranged at the upper part of a cavity of the shell, the upper part of the cavity is divided into two parts by the partition plate, the filter components are vertically arranged in the cavity at the two sides of the partition plate, and the sealing plate is arranged in the cavity. The left side and the right side of the filtering assembly are provided with ventilation openings, the lower end of the filtering assembly and the ventilation opening close to the partition plate are sealed through a sealing plate, an air inlet pipeline and an air outlet pipeline which are communicated with the ventilation opening close to the partition plate are further installed on the upper portion of the shell, and a drainage assembly is installed at the lower end of the shell. According to the mode, impurities in hydrogen can be effectively removed, secondary filtration can be carried out in a limited space, the treatment effect is good, and the problems of high reversibility, low selectivity and the like in the existing hydrogen filtration process are solved.

The invention relates to a pressure control device and method, a solid fuel cell system and a control device. The pressure control device comprises control equipment, a buffer container and pressure adjusting equipment, the control equipment is used for acquiring pressure fluctuation information and temperature information of a working medium in the solid fuel cell system and determining a control mode of the pressure control device according to the pressure fluctuation information and the temperature information; and the pressure adjusting equipment is used for controlling the pressure of the working medium flowing through the buffer container in the solid fuel cell system based on the control mode under the control of the control equipment. In the embodiment of the invention, due to the addition of the buffer container in the solid fuel cell system, when the pressure of the working medium in the solid fuel cell system fluctuates, the inherent space provided by the buffer container can provide a certain amount of buffer capacity, so that the pressure fluctuation is buffered. And the pressure of the working medium flowing through the buffer container can be controlled by controlling the pressure adjusting equipment, so that a pressure fluctuation inhibiting effect is achieved.

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.

To provide those usable as coolants and antifreeze agents for cooling systems.SOLUTION: A ready-to-use antifreeze composition for cooling systems contains: (A) at least one alkylene glycol derivative of formula (I); and (B) at least one corrosion inhibitor selected from the group consisting of (Bb) azole derivatives selected from the group consisting of benzotriazole, tolyltriazole and / or hydrogenated tolyltriazole, and (Bc) compounds of general formula (II).SELECTED DRAWING: None

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.

To provide a method for recovering a precious metal and a device for recovering a precious metal capable of facilitating dissolution and recovery of a precious metal embedded in a solid polymer membrane of a membrane electrode junction when recovering the precious metal included in a fuel cell and a water electrolysis device to improve the recovery efficiency of the precious metal.SOLUTION: The method for recovering a precious metal from a fuel cell or a water electrolysis device has a cooling step for cooling a membrane electrode junction of the fuel cell or water electrolysis device to a temperature below the freezing point at which water included in the membrane electrode junction is frozen, a solution supply step for supplying a solution and bringing the solution in contact with the membrane electrode junction, a precious metal dissolving step for dissolving a precious metal included in a cathode and anode into the solution by applying a voltage to the membrane electrode junction in contact with the solution.SELECTED DRAWING: Figure 1

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.