304results about "Fuel cell details" patented technology

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 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 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 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 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 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.

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.

An amphoteric ion exchange separator for a redox battery according to various embodiments of the present invention may comprise a polymer matrix into which a zwitterionic functional group having a quaternary ammonium group and a sulfonic acid group is introduced.

Provided is a hybrid propulsion vessel that may be environmentally friendly and propelled with high efficiency by utilizing both electric power and heat, two energy forms generated in a fuel cell simultaneously, and by obtaining propulsive force as a propeller is rotated by any one or both of a steam turbine power source driven by heat as a primary power source and an electric motor power source driven by electric power as a secondary power source.

An electrolyte cell (1) comprises a metal support (10) with a plurality of connection holes (11) formed in a first main surface (12) and a cell body (20). The cell body (20) has a gas diffusion layer (5) arranged on the first main surface (12) of the metal support (10) and a hydrogen electrode layer (6) arranged on the gas diffusion layer (5). The gas diffusion layer (5) has through holes (51) that are connected to the connection holes (11). The through holes (51) each have a gap region (51a) formed as a gap extending between the first main surface (12) and the hydrogen electrode layer (6).

Aspects of the present disclosure include a membrane electrode assembly (MEA) having a tailored proton consuming electrode. An exemplary vehicle includes an electric motor, a battery, and a proton exchange membrane electrochemical cell. An electrochemical cell includes a proton-generating electrode, a proton-consuming electrode, and a membrane between the proton-generating electrode and the proton-consuming electrode (the proton-generating electrode, the proton-consuming electrode, and the membrane collectively define a membrane-electrode assembly), and a gas diffusion layer in direct contact with the proton-consuming electrode. The proton consuming electrode is trimmed relative to a first edge of the membrane and relative to a second edge of the membrane. The first edge is orthogonal to the second edge. The proton consuming electrode is tailored at a depth of focus that bypasses the membrane using laser ablation.

The invention relates to a catalytic material layer for an anionically conductive membrane (10) for an electrochemical device; the catalytic material layer comprises metallic nanoparticles bonded by a polymer binder. In one embodiment, the metallic nanoparticles are nickel particles, metal oxide particles, molybdenum particles, particles of a mixture of nickel and metal oxide, particles of a mixture of nickel and molybdenum, or particles of a mixture of nickel, metal oxide, and molybdenum. Such a layer is preferably deposited on the anode side of the membrane. Figure 1.

A dispersion comprising a polyarylene polymer comprising sulfonic acid ester functional groups and its use in the preparation of polymer electrolyte membranes.

The application provides a modularized all-vanadium redox flow battery system, which comprises a positive electrode pressing frame, a negative electrode pressing frame, a plurality of conductive plates, a plurality of single cells and a plurality of locking mechanisms. The plurality of conductive plates are located between the positive electrode pressing frame and the negative electrode pressing frame. The single cell is installed between any two adjacent conductive plates. The single cell comprises a positive electrode frame, a plurality of positive electrode variable regions, a plurality of positive electrodes, a plurality of positive electrode adjusting components, a negative electrode frame, a plurality of negative electrode variable regions, a plurality of negative electrodes, a plurality of negative electrode adjusting components and an ion exchange component. The positive electrode adjusting component is configured to drive two positive electrodes in the corresponding positive electrode variable region to move towards each other or move away from each other along a first direction. The negative electrode adjusting component is configured to drive two negative electrodes in the corresponding negative electrode variable region to move towards each other or move away from each other along the first direction. The reaction rate of electrolyte at each electrode of the modularized all-vanadium redox flow battery system is substantially consistent.

The utility model relates to the technical field of environmental protection and new energy, and particularly discloses a microalgae-mediated power generation energy storage and sewage purification coupling device which comprises a microalgae sewage treatment mechanism and a microalgae biological fuel cell coupling mechanism assembled on one side of the microalgae sewage treatment mechanism, the microalgae sewage treatment mechanism comprises a supporting frame and a supporting seat, an S-shaped glass tube is fixedly mounted on the inner wall of the supporting frame, reflecting covers corresponding to the S-shaped glass tube are fixedly mounted at the front end and the rear end of the supporting frame, and a reactor is fixedly mounted at the top of the supporting seat; pollutants in sewage can be absorbed in the snakelike glass pipeline through microalgae to purify the sewage, meanwhile, the treated microalgae biomass is conveyed into the microalgae biofuel cell coupling mechanism, chemical energy is converted into electric energy, power can be generated in the sewage treatment process, and the sewage treatment efficiency is improved. Economical and efficient sewage purification and energy production are effectively realized.

A hydrogen fuel cell forklift truck with a distributed architecture includes a frame, and, a hydrogen storage system, a fuel cell, a cooling system and an energy storage system arranged on the frame, and the fuel cell is connected with the hydrogen storage system and the energy storage system for charging the energy storage system and providing kinetic energy; the hydrogen storage system is located outside the fuel cell and exposed to the frame for supplying hydrogen to the fuel cell; the cooling system is located outside the fuel cell and connected to the fuel cell for cooling the fuel cell; the energy storage system is located outside the fuel cell and connected to the fuel cell for recovering braking energy and providing kinetic energy together with the fuel cell.

The present invention provides an apparatus for homogenising 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 changing magnetic field through at least one of the plurality of electrochemical cells, wherein the plurality of magnetic flux generators and the plurality of electrochemical cells are arranged in an alternating manner.

The present invention provides a misconnection prevention structure that can easily prevent misconnections of connectors connected to a single stack. [Solution] The connection auxiliary member X1 is attached to the fuel cell A, and the connector B and connection auxiliary member X1 are connected to the stack S of the fuel cell A via the connection auxiliary member X1. The connector auxiliary member X1 is provided on the connector B and has a fitting portion X2 that extends along the connection direction of the connector B. The connection auxiliary member X1 has a main body X1a through which the connector B is inserted, and the fitting portion X2 has a key groove p (first fitting portion) provided on the connector B and a key projection q (second fitting portion) provided on the inner circumferential surface of the through groove h. The key projection q fits in correspondence with the key groove p provided on one of the connector B.

A method for a redox flow battery includes using a redox flow battery cell to store and release stored electrical energy. The using includes circulating a first electrolyte solution through a first circulation loop in fluid communication with a first electrode of the cell and a second electrolyte solution through a second circulation loop in fluid communication with a second electrode of the cell, where at least one first element from the first electrolyte solution of the first electrode permeates a separator layer and deposits in the second electrode as a first solid product, and a second element from the second electrolyte solution permeates the separator layer and deposits in the second electrode as a second solid product. The method also includes removing at least a portion of the first solid product or the second solid product from the first electrode and the second electrode, respectively.

The present invention relates to an end plate for a fuel cell. In order to provide for an improved fuel cell with a high stability, low weight and wide range of deployability an end plate (10) for a fuel cell is provided. The end plate comprises a first layer forming an outer end plate layer (12), a second layer forming an abutting layer (14) for a cell assembly of the fuel cell and a core (16) between the first layer and the second layer. The outer end plate layer comprises a first fibre composite structure providing structural tensile strength in a plane orientation of the outer end plate layer and forming a supporting structure to the abutting layer and the core. The abutting layer comprises a second fibre composite structure providing structural tensile strength in a plane orientation of the abutting layer. The abutting layer provides an electrical insulation for the abutting cell assembly, the abutting layer also providing a leak-tightness for media during operation of the fuel cell. The first fibre composite structure comprises a first fibre material (18) and the second fibre composite structure comprises a second fibre material (20) that is different than the first material. The core is provided as a sandwich core between the outer end plate layer and the abutting layer. The core along with the outer end plate layer provides the torsional and / or bending stiffness to the end plate. The core comprises a porous structure (22) of a dielectric material comprising a plurality of volumes, the porous structure providing compressive strength. The outer end plate layer and the abutting layer are each connected to the core in a laminar manner (24), such that a sandwich plate is formed.

The invention relates to a device (1, 51, 101, 151, 201, 251) for supplying energy to at least one field device (15, 22, 59, 111, 209) of a process plant (3, 53, 103, 153, 203, 253), comprising a process plant (3, 53, 103, 153, 203, 253) through which a main flow (7) of a process medium (9) can flow, with at least one field device (15, 22, 59, 111, 209), and a fuel cell (21) for generating electrical energy from at least one partial flow (17) of the process medium (9), wherein the at least one field device (15, 22, 59, 111, 209) is used for controlling and / or regulating the main flow (7) and / or of at least one partial flow (17) of the process medium (9). The fuel cell (21) is coupled to the at least one field device (15, 22, 59, 111, 209) in such a way that the generated electrical energy can be used at least partially to supply energy to at least one component of the at least one field device (15, 22, 59, 111, 209).