512results about "Fuel cell details" patented technology

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.

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.

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 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 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.

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.

The present invention relates to redox flow battery system. In particular, the present invention relates to low-cost Zinc-polyiodide redox flow battery (ZIFBs) with a low-cost electrolyte additive and a composite membrane comprising a microporous membrane and a cation conducting membrane.

The invention relates to an electrolyte membrane and a manufacturing method thereof. Provided is an electrolyte membrane which exhibits high proton conductivity even at low humidity. An electrolyte membrane comprising a composite membrane provided with: a polyolefin microporous membrane which has an average pore diameter of 1-1000 nm and a porosity of 50-90%, and which can be impregnated with a solvent having a surface free energy of 28 mJ / m2 or more; the composite membrane comprises a polyolefin microporous membrane and an electrolyte, the electrolyte contains a perfluorosulfonic acid polymer with EW250-850, pores of the polyolefin microporous membrane are filled with the electrolyte, and the membrane thickness of the composite membrane is 1-20 microns.

The utility model relates to an anti-tilt fuel cell system, which comprises a vehicle body and a fuel cell system arranged in the vehicle body, fuel cell system mounting racks are arranged on two sides of the fuel cell system, and the fuel cell system mounting racks are in running fit with the fuel cell system. Therefore, the fuel cell system is always adjusted to be in a vertical state under the action of gravity when the vehicle is in an inclined state. The system is simple in structure and reasonable in design, when a vehicle is located on a ramp with a gradient, a fuel cell system can still be in a vertical state, so that the drainage strategy of a fuel cell is consistent with that of the fuel cell on a horizontal road surface, the complexity of system control is not increased, and compared with a complex multi-drainage-valve scheme, the system is simple in structure and convenient to use. The device is easy to implement and maintain, and has high practicability and economical efficiency.

The invention belongs to the technical field of flow battery energy storage, and particularly relates to a modularized electric pile structure and a flow battery, the modularized electric pile structure comprises a plurality of electric pile units which are arranged in a stacking mode, and the electric pile units are sequentially arranged in the stacking direction; each electric pile unit comprises a plurality of stacked single batteries, a first end plate and a second end plate, the single batteries are sequentially arranged along the stacking direction, the first end plate and the second end plate are respectively and tightly pressed on two sides of the stacked single batteries, the first end plate is provided with a first inflow port and a first outflow port, and the second end plate is provided with a second inflow port and a second outflow port. The second end plate is provided with a second inflow port and a second outflow port, and the first end plate and the second end plate are provided with a fluid short-circuit port and a circuit short-circuit port. According to the modular electric pile structure disclosed by the invention, through modular design, rapid short circuit, isolation and replacement of a circuit and a flow path of a local fault unit of the flow battery are realized, continuous operation of a system is guaranteed, and maintenance efficiency and operation reliability are improved.

To provide a cell unit capable of enhancing the degree of freedom in design and assembly.SOLUTION: A cell unit 2 comprises a substrate 10 defining first and second surfaces 11 and 12 opposite to each other, a hole 13 that passes through the substrate 10 from the first surface 11 to the second surface 12, a membrane 21 disposed in the hole 13 to separate it into a first space 15 on the side of the first surface 11 and a second space 16 on the side of the second surface 12, and conductive members 28, 29 arranged on the first space 15 or the second space 16 along the membrane 21.SELECTED DRAWING: Figure 1

The utility model belongs to bipolar plate technical field, concretely relates to a kind of composite corrosion-resistant bipolar plate, including titanium nitride layer, titanium oxide layer and graphite layer sequentially arranged on substrate from inside to outside;Transition layer is equipped between titanium nitride layer and substrate, between titanium oxide layer and titanium nitride layer and between graphite layer and titanium oxide layer. Titanium oxide layer can be effectively set to enhance the corrosion resistance of metal bipolar plate;And setting titanium nitride layer can further enhance the corrosion resistance of metal bipolar plate. The graphite layer set can effectively enhance the conductivity of metal bipolar plate, while reducing contact resistance. Through the above structure setting, focus on improving the corrosion resistance of composite bipolar plate and reducing its contact resistance, thereby prolonging the service life of composite bipolar plate in fuel cell. Titanium layer is used as transition layer in composite bipolar plate, thereby effectively improving the bonding force between the multilayer film of bipolar plate.

In redox flow batteries (RFBs), the base solvent of the electrolyte has a tendency to migrate from one electrode to the other across the barrier layer. This can result in a volume and concentration imbalance between the electrolytes that adversely affects the efficiency and capacity of the battery. Compatible electrolytes can be mixed to rebalance the system, but for incompatible electrolytes, mixing is not a viable option. To this end, the RFB herein includes a separator that recovers the base solvent from the vapor phase of one electrolyte and returns the recovered base solvent to the other electrolyte, thereby reversing the imbalance.

The invention relates to an electrochemical cell, in particular a fuel cell or an electrolytic cell, comprising a membrane (3), on both sides of which a gas diffusion layer (1, 2) having openings (6) for the supply of a medium is attached, the contact surface of at least one gas diffusion layer (1, 2) attached to the membrane (3) being partially, in particular in the region outside the three-phase boundary, in particular in the region outside the three-phase boundary. An electrically insulating material (4) is coated. The invention also relates to a method for producing an electrochemical cell.