38results about How to "Reduce current density" patented technology

The invention provides a rapid activation method of a proton exchange membrane fuel cell, and belongs to the technical field of fuel cells. The rapid activation method comprises a hydrogen pump activation stage and a variable load activation stage. In the hydrogen pump activation process, a current with the current density of 50-200mA / cm < 2 > is applied to the fuel cell in a constant current mode for 5-30 minutes, so that the utilization rate of an electrode catalyst is improved, and the generation of surface oxides of a cathode catalyst can be removed or avoided; in the variable load activation process, low current density and high current density are alternately changed, the ratio of the high current density to the rated current density of the battery is 0.8-1.2, and the ratio of the low current density to the high current density is less than or equal to 0.2, so that establishment of water, gas, electron and proton channels in the membrane electrode is facilitated. By adopting the activation method provided by the invention, the activation time of the proton exchange membrane fuel cell is effectively shortened, the hydrogen consumption is reduced, and the manufacturing cost of the fuel cell is reduced.

This invention relates to the field of perovskite solar cell technology, and discloses a method for preparing a low-dimensional perovskite thin film and its solar cell. The method for preparing the low-dimensional perovskite thin film is as follows: Step 1, weighing p-fluorophenylethylamine iodine, methyl iodide, lead iodide, formamidine iodide, methyl ammonium chloride, and lead chloride, and dispersing them in a mixed solution composed of dimethylformamide and dimethyl sulfoxide to obtain a low-dimensional perovskite precursor solution; Step 2, dropping the low-dimensional perovskite precursor solution onto a substrate, rapidly spin-coating for 10-20 seconds, and then subjecting it to reverse-order cooling annealing to obtain a low-dimensional perovskite thin film. This invention rapidly forms a low-dimensional perovskite wet film through high-speed spin-coating, followed by reverse-order cooling annealing, which not only enables the preparation of low-dimensional perovskite thin films with vertically grown multiphase structures, but also has good repeatability and reduces the manufacturing cost of battery devices. The reverse-order cooling annealing process described in this invention is simple and suitable for industrial production.

The utility model relates to the technical field of breast pumps, in particular to a heating breast pump which comprises a cover body and a main machine connected with the cover body, the cover body is provided with a heating assembly used for heating and a cover body connector connected with the heating assembly, and the main machine is provided with a main machine connector communicated with the cover body connector. And the cover body connector and / or the host connector are / is provided with an annular conducting end for increasing the conducting contact area. According to the utility model, the conductive contact area is increased by arranging the annular conductive connection end, so that a wider and stable path can be provided when current passes through, the current density of the current at a contact point can be effectively reduced, the situation that the contact point is broken down due to overlarge local current is avoided, the current can continuously and stably pass through the connector, and the service life of the connector is prolonged. Normal power-on work of the heating assembly is maintained, and the problem of heating function failure caused by poor contact is reduced.

The invention belongs to the technical field of electrocatalytic hydrolysis, and particularly relates to a preparation method and application of high-activity NiCe (OH) n / NF. A noble metal catalyst is not used, so that the use cost is greatly reduced. The positive electrode obtains glucaric acid in an electrooxidation mode, meanwhile, the active center NiOOH can stably exist in an alkaline environment in a circulation mode, and the negative electrode produces hydrogen. And due to the redox cycle between Ni (OH) 2 and NiOOH, the overpotential can be effectively reduced, and the electric energy loss is reduced. And due to the synergistic effect of a small amount of cerium, the system can realize high-efficiency hydrogen production while obtaining the glucaric acid with high additional value. According to the method, glucose is catalyzed by using a circulating system to obtain glucaric acid, meanwhile, the anode glucose yield reaches 70%, and the cathode hydrogen evolution efficiency is close to 100%. Compared with a traditional water electrolysis hydrogen production process, the glucose oxidation assisted low-potential couple circulation coupling hydrogen production method conforms to'green chemistry 'and is lower in cost, and harsh reaction conditions and complex separation steps are avoided.

This invention relates to the field of hydrogen production technology through water electrolysis, and provides a low-energy-consumption constant-temperature water supply system for ultrapure water electrolysis hydrogen production. The system includes a PEM electrolyzer, an ultrapure water supply unit, a circulating water supply loop, a local purification and bypass unit, a data acquisition module, a data analysis module, an energy consumption determination module, and an energy consumption control module. The data analysis module determines the heat load matching parameters based on current, voltage, circulating flow rate, and inlet and outlet water temperatures, and determines the water quality characterization state and flow characterization state. The energy consumption determination module first determines whether the temperature rise represents the actual heat load. Under non-actual heat load conditions, the energy consumption control module determines the cause of abnormal energy consumption based on water quality and flow state, and performs pump reduction and cooling, short-term flow correction, local purification, or current density reduction control to reduce the additional energy consumption of the constant-temperature water supply.

The application discloses the technical field of electroplating wastewater treatment high-value metal recovery system for electroplating wastewater, including electrolytic cell and electrolytic mechanism, electrolytic cell is connected with infusion tube, infusion tube is connected with electronic flowmeter, electrolytic cell top is detachably connected with cover body, cover body is provided with observation ring groove, cover body is fixedly connected with camera unit; The inside lower side of the electrolytic cell is provided with a sedimentation plate and a stirring unit, the sedimentation plate is in sliding fit with the inner side wall of the electrolytic cell, the bottom of the electrolytic cell is fixedly connected with a first weighing sensor, and the detection end of the first weighing sensor is in abutment with the bottom of the sedimentation plate; The electrolytic mechanism includes a controller, a driving unit, an adjusting unit and an electrolytic unit. The application reduces the generation of concentration polarization and activation polarization phenomenon in the process of electroplating wastewater metal treatment and recovery, recovers the wastewater metal in an efficient state, estimates the treatment and recovery effect of the wastewater metal, and improves the qualified rate of wastewater metal treatment and recovery.

The invention discloses a cathode protection method for an aluminum electrolysis cell, which solves the problem of serious non-uniform abrasion of a cathode caused by physical abrasion and electrochemical corrosion of the aluminum electrolysis cell, and adopts the technical scheme of implementing integral protection on a cathode abrasion area. The cathode protection frame is arranged above the cathode abrasion area, the filling material is arranged in the cathode protection frame, the flow speed of molten aluminum in the cathode abrasion area is reduced by means of the flow choking characteristic of the cathode protection frame, a material sediment accumulation protection layer is formed above the cathode abrasion area, a cathode is protected against erosion abrasion of the molten aluminum, and the service life of the cathode is prolonged. And the current density, the temperature and the aluminum carbide generation speed of a cathode abrasion area are reduced, the cathode abrasion deepening process is delayed, and the purposes of prolonging the safe operation life of the electrolytic cell and reducing the solid waste discharge amount are achieved.

The utility model provides a light emitting diode, comprising a substrate, an epitaxial layer, a first electrode and a second electrode, the epitaxial layer is located on a first surface of the substrate and comprises a first semiconductor layer, a light emitting layer and a second semiconductor layer which are sequentially arranged from top to bottom, the first electrode is electrically connected with the second semiconductor layer, and the second electrode is electrically connected with the light emitting layer. The second electrode is electrically connected with the first semiconductor layer. In the utility model, the epitaxial layer comprises the first part and the at least one second part, and the second part is arranged at the periphery of the first part, so that the area of the epitaxial layer can be increased on the basis of ensuring that enough electrodes can be arranged in other areas except the epitaxial layer; the brightness of the light-emitting diode is increased, the current density of the light-emitting diode can be reduced so as to relieve the problem that the light-emitting efficiency is reduced, and the working performance of the light-emitting diode under the condition of ultra-large current density is remarkably improved.

The invention relates to the technical field of fused salt energy storage, and provides an electrode type fused salt heating device, which comprises a first fused salt pond, a second fused salt pond and a heating device, the second molten salt pond is used for storing the heated molten salt; the fused salt heating pipe is connected between the first fused salt pond and the second fused salt pond, and the fused salt heating pipe is connected with the heating electrode; the third molten salt pond is used for mixing the cold salt and the heated molten salt to form molten salt to be heated; the first conveying pipe is communicated with the third molten salt pond and is used for conveying cold salt into the third molten salt pond; the second conveying pipe is communicated with the second molten salt pond and the third molten salt pond and is used for conveying the heated molten salt into the third molten salt pond; and the third conveying pipe is communicated with the first molten salt pond and the third molten salt pond and is used for conveying the molten salt to be heated to the first molten salt pond. According to the technical scheme, the problems of local overheating, fused salt overtemperature decomposition and high electrode corrosion rate in related technologies can be effectively solved.

This disclosure provides a display processing method, apparatus, and display device, belonging to the field of display technology. The display processing apparatus is applied to a display device, the display area of ​​which includes color sub-pixels and white sub-pixels. The apparatus includes: an acquisition module, configured to, when the display device is in video playback mode, acquire a first value of at least one first parameter of a preset area of ​​the display area, the first parameter corresponding to a driving transistor of a pixel driving circuit of the preset area, the value of the first parameter being proportional to the threshold voltage of the corresponding driving transistor; after a first preset time period, acquire a second value of each first parameter; a determination module, configured to determine a target area based on the difference between the second value and the first value, wherein at least a portion of the first parameters of the target area have a difference greater than a first preset threshold; and a processing module, configured to reduce the brightness of the color sub-pixels of the target area. The technical solution of this disclosure can eliminate image retention in display devices.

This utility model relates to the field of lithium battery technology, and proposes a soldering structure and a cylindrical lithium-ion battery. The soldering structure includes multiple parallel and spaced solder lines, and the solder lines are wavy in shape. The width W1 of the soldering structure is 1.6-3.4 mm; the minimum distance W10 between two adjacent solder lines is 0.6-1.1 mm. By controlling the reasonable size of the soldering, problems such as welding explosions and discoloration of solder lines caused by heat concentration due to excessively small soldering can be avoided. At the same time, excessively large soldering can prevent the increase in laser travel, the reduction in welding efficiency and production capacity, and the decrease in welding reliability caused by the expansion of the solder line area, thereby effectively improving welding quality and efficiency.

The utility model belongs to the field of smelting, and particularly relates to a six-electrode ferroalloy submerged arc furnace which comprises a first electrode group, a second electrode group, a first transformer group and a second transformer group, the first electrode group comprises three first electrodes which are arranged in a triangular shape, the first transformer group comprises three first transformers, and every two first electrodes are connected through one first transformer; the second electrode group comprises three triangular second electrodes, the second transformer group comprises three second transformers, and every two second electrodes are connected through one second transformer; the first electrodes and the second electrodes are uniformly arranged at intervals around the same axis, and through the arrangement of the six electrodes, the diameters of the electrodes can be effectively reduced, and heating points are increased, so that a better heating effect is obtained.

The present invention belongs to the technical field of lithium batteries, and discloses a lithium alloy negative electrode with a reserved space and an integrated conductive skeleton and a preparation method thereof. A lithium-rich alloy layer is provided at the lower layer of the alloy skeleton layer, and the lithium-rich alloy layer contains a three-dimensional skeleton formed by a lithium solid solution / intermetallic compound. The upper layer of the lithium alloy negative electrode is a reserved space formed by the three-dimensional alloy skeleton remaining after the lithium single phase is selectively removed by an organic solvent and the gaps between the skeletons. The skeleton in the surface reserved space and the skeleton in the lithium alloy are both three-dimensional integrated skeleton structures formed in situ by lithium solid solution or intermetallic compound, which significantly improve the cycle performance of the battery. At the same time, the thickness of the reserved space skeleton layer can be strictly controlled by the concentration of the organic solution and the immersion time, which is suitable for rapid preparation by the roll-to-roll method, and is convenient for commercial mass production applications.

The application provides a semiconductor device with more uniform thermal stress distribution on the chip surface, which comprises a substrate of a first conductive type, a plurality of rows of units arranged along the longitudinal direction on the substrate, and a plurality of units arranged along the transverse direction in each row, wherein the units are active units, dummy units or dummy gate units; the active units, the dummy units and the dummy gate units are arranged in any proportion in the transverse direction and the longitudinal direction; the thermal stress on the surface of the semiconductor device is customized by adjusting the proportion of the active units, the dummy units and the dummy gate units in different regions or the length of the source region of the active units or the spacing of the units or the mesa width of the units. The semiconductor device adopts a non-repetitive unit structure layout, and the chip surface temperature is adjusted according to the designer's requirements by adjusting the unit layout or the unit structure; the thermal gradient on the chip surface can be reduced, the large thermal mechanical stress borne by the semiconductor package can be reduced, and the service life and reliability of the device and the interconnection structure thereof can be prolonged.

The embodiment of the present invention discloses a display panel and a display device, comprising a first display area and a second display area, wherein the second display area comprises a first sub-display area and a second sub-display area, and the transmittance of the second sub-display area is greater than that of the first display area; the first pixel circuit is located in the first display area, and the second pixel circuit is located in the first sub-display area; the first light-emitting repeating unit is located in the first display area and comprises at least one first light-emitting unit; the second light-emitting repeating unit is located in the second display area and comprises at least two second light-emitting units; in the same first light-emitting repeating unit, all first sub-light-emitting elements of at least one color are electrically connected to the same first pixel circuit; in the same second light-emitting repeating unit, all second sub-light-emitting elements of at least one color are electrically connected to the same second pixel circuit. Thus, the transmittance of the second display area is improved, and the split screen phenomenon is improved.

This invention relates to the field of metal surface treatment technology, specifically to a low-cost, high-corrosion-resistant micro-arc oxidation film for magnesium alloys and its preparation method. First, the magnesium alloy workpiece is pretreated. Then, an electrolyte for the micro-arc oxidation process is prepared. The pretreated magnesium alloy workpiece is used as the anode, and stainless steel as the cathode, placed in the electrolyte for micro-arc oxidation, ultimately yielding a dense oxide film. This invention utilizes an externally controlled electrical parameter process of "online monitoring and regulation control + composite carrier wave," combined with a low-energy-consumption electrolyte system, to achieve the desired dense oxide film. The main components of the oxide film are magnesium silicate, magnesium phosphate, magnesium oxide, magnesium fluoride, and zirconium oxide, resulting in high film hardness and improved wear resistance. It achieves a neutral salt spray test rating of ≥480h (10μm) at level 9, meeting the performance requirements of automotive parts and suitable for large-scale industrial production, with a comprehensive energy consumption reduction of 50%~60%.

This invention relates to the field of motor design and manufacturing technology, and provides a motor structure that solves the problems of poor heat dissipation and easy local overheating in the end windings. The motor structure includes a stator core and windings. The windings include a winding slot portion assembled within a stator core slot and a winding end portion extending beyond the end face of the stator core. The cross-sectional width W of the winding end portion is... end The cross-sectional width W of the portion inside the winding slot is greater than the width of the winding slot. slot And W end >W end,min W end,min This refers to the minimum cross-sectional width of the end winding, determined based on the target temperature difference constraint between the end winding and the slot winding. This invention achieves axial temperature uniformity of the winding without adding a cooling system, eliminating localized hot spots and improving power density and insulation life.

The utility model provides a kind of pole piece structure, roll core pole group and cylindrical battery, including pole piece body, pole piece body has coating area, several pole lug areas are arranged at interval along the length direction of pole piece body, at least one pole lug area is equipped with at least 2 pole lug arranged at interval between pole lug area, and pole lug is connected to the long side of pole piece body;Pole piece structure is after participating in winding and forms roll core pole group, and the pole lug area on pole piece structure is arranged at radial in the center hole of roll core pole group towards one end surface of roll core pole group. It improves the space utilization of battery shell, improves the infiltration problem of electrolyte, improves internal resistance and heat dissipation, and improves electrochemical performance.

The invention discloses a display panel, a preparation method and a display device, relates to the technical field of display, and can prolong the service life of the display panel. The display panel comprises a light-emitting backboard and a light conversion layer. The light conversion layer is arranged on the light-emitting side of the light-emitting back plate; the light conversion layer comprises a first hollowed-out part, and a light shading structure is arranged in the first hollowed-out part; the light conversion layer comprises a plurality of light conversion units, different light conversion units are used for emitting light of different colors, and the light conversion units are located between the adjacent first hollowed-out parts. The preparation method of the display panel comprises the following steps: arranging a light-emitting back plate; a light conversion layer is arranged on the light-emitting side of the light-emitting back plate, first hollowed-out parts are arranged on the light conversion layer, the light conversion layer comprises a plurality of light conversion units, the different light conversion units are used for emitting light of different colors, and the light conversion units are located between the adjacent first hollowed-out parts. And a shading structure is arranged in the first hollowed-out part.

This invention discloses a coil design method, a coil, and a transformer. The method includes dividing the coil into at least a first coil and a second coil; and placing the second coil above the first coil along the height direction of the transformer. The first coil is made of a first conductor, and the second coil is made of a second conductor. The width of the second conductor is greater than the width of the first conductor, and / or the thickness of the second conductor is greater than the thickness of the first conductor. This invention can reduce temperature unevenness in the coil, improve the overall temperature rise of the coil, increase material utilization, reduce costs, improve the operating quality of the transformer, and extend the service life of the coil.

The application relates to a phase shifter and an antenna. The phase shifter comprises a substrate, a main feed line and at least one first sub-feed line are arranged on the substrate, the first sub-feed line comprises an arc-shaped line segment, and the main feed line passes through the center of the arc-shaped line segment of each first sub-feed line; a phase shift plate is arranged and comprises at least one phase shift line, each phase shift line is correspondingly coupled with the arc-shaped line segment of each first sub-feed line; and a limiting assembly is arranged and comprises a first limiting piece and a second limiting piece which are connected to the phase shift plate; the substrate is provided with a first matching part and a second matching part which are arranged at intervals; the first limiting piece is guided and matched with the first matching part, and the second limiting piece is guided and matched with the second matching part along the circumferential direction of the arc-shaped line segment, so that the phase shift plate is connected to the substrate by rotating around the first axis, and the coupling position of each phase shift line and the corresponding arc-shaped line segment can be changed when the phase shift plate rotates relative to the substrate. The phase shifter and the antenna have high reliability.

The invention relates to the technical field of motor control, in particular to a three-phase six-wire motor controller, which comprises an independently researched and developed motor driving chip P2850, a power supply module, a sensor group, a communication interface, a driving circuit, a power module and a heat dissipation system. The P2850 chip integrates a special hardware accelerator and an MCU core, executes a hardware FOC algorithm, and accurately regulates and controls six-path phase current in real time; according to the power module, 12 power semiconductor switching devices form two independent three-phase full-bridge inverter circuits. By the adoption of the technical scheme, high-order harmonic current can be effectively restrained, the operation efficiency of the motor is improved, vibration noise is reduced, the torque output and speed regulation range is widened, and the system reliability and the fault-tolerant capability are enhanced.

This utility model belongs to the field of lithium-ion battery technology and discloses a composite current collector and battery electrode. The composite current collector includes a base film and a first conductive layer disposed on a first surface and a second conductive layer disposed on a second surface of the base film. The first and second surfaces are disposed opposite to each other. Along the width direction of the base film, the thickness of the base film decreases from the middle position in the width direction to both sides of the width direction. The base film is axially symmetrically disposed in the width direction. The total thickness of the composite current collector remains consistent throughout the entire composite current collector. When the polymer film is electroplated in an electroplating bath, it can avoid the surface undulation of the base film along the width direction caused by the difference in current density in the electroplating solution. This avoids the situation where the surface of the base film wrinkles or slips and cannot be rolled up, thus reducing the difficulty of subsequent application of the current collector inside the lithium-ion battery.

The invention provides a zinc negative electrode conductive electric field shielding layer and a preparation method and application thereof, and belongs to the technical field of zinc negative electrode conductive electric field shielding layer materials. The conductive electric field shielding layer with specific components and content is constructed on the surface of the zinc negative electrode, and the Faraday cage type space is formed between the zinc negative electrode and the conductive electric field shielding layer, so that an external electric field is shielded in a zinc negative electrode stripping process; zinc acid salt aggregation caused by the effect of a zinc negative electrode interface electric field is inhibited, formation of zinc oxide on the surface of the zinc negative electrode is remarkably slowed down, uniform stripping of zinc is achieved, and the utilization rate and energy density of the zinc negative electrode in an alkaline primary battery are greatly improved. The problem of serious passivation caused by zinc oxide generated on the surface of the zinc negative electrode in the alkaline electrolyte is effectively solved, and the long-term cycling stability and the service life of the alkaline secondary battery are remarkably improved.

The present invention belongs to the field of metallurgy technology, and relates to a conductive circuit control device and method for electroslag fusion welding, the device comprising: a combined crystallizer is arranged on the side and bottom of a welding part; a plate-type consumable electrode is arranged between two welding parts, and the bottom of the plate-type consumable electrode is immersed in a preset depth of a slag pool; a power supply connects the plate-type electrode and a conductive disk; the top / side conductive disk is fixedly pressed on the top / side of the welding part; a top / side conductive circuit switch is arranged between the industrial AC power supply and the top / side conductive disk; during the electroslag fusion welding process, the current density and Joule heat inside the slag pool and the lower part of the fusion zone are reduced by controlling the on-off of the conductive circuit. Its beneficial effect is that the Joule heat in the slag pool is concentrated near the plate-type consumable electrode, the melting rate inside the welding part is reduced, and then the horizontal width of the slag pool is reduced, which is conducive to maintaining the depth of the slag pool, reducing the total volume of the fusion zone, making the stress distribution during the solidification process more uniform, and reducing element segregation.

The invention relates to a passive structure for reducing corrosion in a connector. A connector structure that can help reduce contact corrosion in a connector receptacle and can reduce liquid entering an electronic device that houses the connector receptacle. One example may increase the effective width between adjacent contacts. The example and other examples may force dendritic growth to occur in a location where the dendritic growth may be at least partially cleared by inserting a corresponding connector into the connector receptacle.

The invention relates to a membrane-free electrodeionization device, in particular to a resin electroregeneration and deep desalination dynamic balance control method and system of the membrane-free electrodeionization device. According to the method, operation data such as produced water resistivity / conductivity, concentrated water conductivity / ion concentration, flow, temperature, power supply voltage and current and the like are collected on line, an electric field-flow field-ion concentration field multi-field coupling model is constructed and solved, and the interface water dissociation generation rate, the resin ion exchange transformation rate and the foreign ion discharge rate are predicted in real time. Three-rate matching is used as a control criterion, and the current density, apparent velocity and split ratio are adjusted in a linkage manner, so that the device maintains the dynamic balance of the coordination of resin in-situ electric regeneration and ion discharge, inhibits side reaction and ion accumulation, realizes continuous and stable deep desalination under the conditions of no membrane and no additional acid and alkali, reduces energy consumption and improves the reliability of long-period operation.

The present disclosure provides a complex formed by metal lithium and a network skeleton material having a lithiophilic modification layer, a preparation method therefor and application thereof. The method of the present application can realize the industrial preparation of a complex of metal lithium and a network skeleton material having a highly lithiophilic modification layer, and the metal lithium and the carbon material in the complex as prepared are completely infiltrated with each other, such that there is no delamination or void in the complex. The conductive 3D carbon skeleton structure in the complex can provide a reserved space for metal lithium deposition, thereby alleviating the volume expansion of the metal lithium negative electrode. The conductivity of the carbon skeleton structure can reduce the current density on the electrode surface, thereby reducing the generation and growth of lithium dendrites. The electrode prepared with the complex has a stable structure, facilitating the preparation of an electrode with a long cycling lifetime.

This invention discloses a high-Q tuned filter, belonging to the field of tuned filter technology. The tuned filter includes two symmetrically arranged resonant cavities, each connected in parallel with an inductor. This invention reduces the current density of a single coil, suppresses high-frequency skin and proximity effects, significantly reduces the high-frequency loss resistance of the inductor, and significantly improves the Q value at the same operating frequency. It directly reduces in-band insertion loss and improves out-of-band rejection depth, resulting in a significant improvement in filtering accuracy and anti-interference capability.

The invention discloses an electrode suitable for a zinc-bromine flow battery and a preparation method of the electrode. The invention relates to an electrode suitable for a zinc-bromine flow battery, which is characterized in that the electrode is provided with pore channels which are periodically arranged, the pore channels are circular or square, the size of the pore channels is 0.4-0.6 mm, and the interval between the pore channels is 0.4-0.6 mm; the electrode is prepared by using a mixture of titanium alloy matrix powder and nano conductive particles as a material, the particle size of the titanium alloy matrix powder is 15-53 [mu] m, the titanium alloy matrix powder is selected from one of TA1, TA2 and TC4, the particle size of the nano conductive particles is 100-200 nm, the nano conductive particles are selected from one or more of TiN, silver and graphene, and the particle size of the nano conductive particles is 100-200 nm. And the mass ratio of the nano conductive particles to the titanium alloy matrix powder is 0.5%-2.0%. Based on the SLM printing technology, the electrode with the periodically arranged three-dimensional pore channels is prepared, the electrode has the extremely high specific surface area, the low current density is kept in the charging process of the zinc-bromine flow battery, and zinc is promoted to be deposited on the surface of the electrode in a three-dimensional instantaneous nucleation mode.