87 results about "Electrode corrosion" patented technology

The invention discloses a modified zinc negative electrode and an aqueous zinc ion battery comprising the same, the modified zinc negative electrode comprises a negative electrode current collector, at least one surface of the negative electrode current collector is provided with a modified coating, and the modified coating comprises a rare earth-based metal organic framework material and a binder. In the modified coating, the rare earth-based metal organic framework material changes the microstructure of the zinc negative electrode and homogenizes the surface electric field and ion flow of the zinc negative electrode, so that disordered deposition of zinc ions can be blocked, a uniform transmission channel can be provided for the zinc ions, growth of zinc dendritic crystals and dead zinc accumulation on the surface are inhibited, and the zinc negative electrode has the advantages of high corrosion resistance and high corrosion resistance. And meanwhile, direct contact between the electrolyte and the zinc negative electrode can be effectively avoided, and hydrogen evolution side reaction and electrode corrosion are inhibited, so that the cycle performance of the aqueous zinc battery is improved.

The invention belongs to the field of electrochemical energy storage, and particularly relates to a water-based zinc ion battery electrolyte, a battery and a zinc negative electrode protection method of the battery, zinc negative electrode corrosion, hydrogen evolution reaction and dendritic crystal growth are effectively inhibited by regulating and controlling the electrolyte, changing a hydrogen bond network of the electrolyte and optimizing a zinc ion solvation structure, and the cycle life of the zinc negative electrode is prolonged. The solvent of the electrolyte is water, and the solute is zinc sulfate and shikimic acid. When the prepared electrolyte is used for assembling the zinc symmetric battery, the interface impedance is obviously reduced, the deposition morphology is optimized, the formation of dendritic crystals is inhibited, hydrogen evolution reaction and side reaction are inhibited, and the cycle life of a zinc negative electrode can be effectively prolonged.

The invention provides a stretchable in-situ soaking double-network hydrogel electrolyte as well as a preparation method and application thereof. The method comprises the following steps: preparing a uniformly mixed solution of a first monomer, a second monomer, an initiator, a cross-linking agent and an accelerator; adjusting the pH value of the mixed solution, and uniformly stirring to obtain a precursor solution; removing bubbles in the precursor solution, and carrying out free radical polymerization at a preset temperature to form hydrogel; and cutting the hydrogel, dropwise adding a trace amount of a salt solution containing zinc ions to two sides of the cut hydrogel, and clamping the hydrogel between two pole pieces for in-situ soaking to obtain the hydrogel electrolyte. By using the independent hydrogel electrolyte, side reaction on the surface of the zinc negative electrode, growth of dendritic crystals and electrode corrosion can be inhibited, and meanwhile, the electrochemical performance of the zinc ion battery is improved.

The invention relates to the field of electrochemical energy storage, in particular to an aqueous zinc battery diaphragm based on mesoporous MOF and a preparation method and application thereof. The aqueous zinc battery diaphragm based on the mesoporous MOF has the capabilities of lightening and thinning, high wettability of an aqueous electrolyte, strong liquid retention, promotion of ion desolvation, acceleration of ion transmission and the like, is beneficial to realizing high utilization rate of a zinc negative electrode, and improves weight and volume energy density, rapid charge and discharge performance and long service life of an aqueous zinc battery; the obtained aqueous zinc battery diaphragm based on the mesoporous MOF is low in cost, and the battery cost can be effectively reduced; according to the invention, a mesoporous UIO-66 MOF functional group is used for regulating and controlling an ion coordination environment, pore channels bind water molecules to reduce water activity, an additive is cooperated for corrosion inhibition, corrosion of zinc dendrites and an electrode is accurately inhibited, interface compatibility is optimized, the problems of dendrites, corrosion, side reactions and the like in a water-based battery are effectively solved, and the service life of the water-based battery is prolonged. Therefore, the rate capability and the cycling stability of the battery are remarkably improved.

The invention provides a method for stripping an electrode of a solar cell, and relates to the technical field of photovoltaics. The method comprises the following steps: putting a battery piece into a container, putting the container on an electric heating table, pouring an acid liquor reagent into the container, and submerging the battery piece by the acid liquor reagent to soak the battery piece; after a grid line and an electrode on the surface of the battery piece are corroded and fall off by the acid liquor reagent, carefully taking out the battery piece along the direction of the grid line, and putting the battery piece into a container filled with ultrapure water; transferring the container to a water tank, carefully wiping grid lines and electrodes on the surface of the battery piece by using a scouring pad under the washing of ultrapure water, and cleaning corroded residues attached to the surface of the battery piece; after the silicon wafer is cleaned, the silicon wafer is placed on dust-free paper to wipe off residual moisture on the peeled silicon wafer; transferring the silicon wafer to an ultrasonic cleaning machine for ultrasonic cleaning; wherein the acid liquor reagent is formed by mixing sulfuric acid and hydrochloric acid, and the heating temperature of the electric heating table is 50 + / -0.5 DEG C. The method is simple and convenient to operate, and can be used for stripping a complete battery piece without a damaged blue film.

The application discloses a kind of bioelectrochemical reactor and the method for processing low concentration wastewater using it, belong to low concentration wastewater treatment technical field.The bioelectrochemical reactor of the application includes reactor top cover and reactor tank body;Gas inlet hole is provided on the reactor top cover, anode, cathode and aeration device are arranged in the reactor tank body, and anode and cathode are connected with external direct-current power supply through titanium wire respectively;Aeration device is connected with gas inlet hole;Anode and cathode are both carbon nanotube modified titanium electrode.When the above-mentioned bioelectrochemical reactor is used to process low concentration wastewater, first, electroactive bacteria are cultivated on the surface of electrode using aerobic sludge, then bioelectrochemical aerobic reaction is carried out, and under aeration condition and low voltage, COD and NH4 + -N removal efficiency can reach more than 95%, electrode corrosion is low, the treatment method is simple and efficient, and no secondary pollution is generated, and has wide application prospect.

The invention relates to the field of square aluminum shell batteries, in particular to a modularized square aluminum shell battery device of an energy storage station, which comprises a supplementing mechanism used for filling a graphite layer and a passive film; a storage shell is arranged below the top cover, and the storage shell is used for storing and connecting a plurality of square aluminum shell batteries; the bottom of an inner cavity of the storage shell is fixedly provided with a suspension platform, the suspension platform is provided with a battery shell, and the suspension platform is used for suspending the battery shell, so that heat dissipation is more sufficient. And at the moment, the coating sheet can replace the dissolved separation film to block the electrolyte and the negative electrode material, so that the effects of preventing the passivation film from being broken and enabling the electrolyte to be in contact with the positive electrode and the negative electrode are achieved. And meanwhile, the effects of avoiding the problems of electrode corrosion, battery self-discharge and gas production are also achieved.

The invention relates to the field of flow metering, in particular to a mine electromagnetic flowmeter which comprises a shell, a lining and an electrode, the lining is arranged in the shell, the electrode is rotatably mounted in the lining, a water storage cavity is formed in the shell, a water spraying opening communicated with the water storage cavity is formed in the lining, the water spraying opening faces the electrode, and the water spraying opening is communicated with the water storage cavity. And the water storage cavity is connected with an energy storage device. The electrode is driven to rotate by flowing water flow in a pipeline, so that multiple sides of the electrode can be flushed by the water flow, energy and water are stored by water pressure, stored energy is released when the water flow stops, and water is drained and stored through the released energy to flush dirt remaining on the electrode, so that the scaling speed of the electrode is slowed down, and the cleaning frequency of the electrode is reduced; the problems that the electrode scaling speed of the mine electromagnetic flowmeter is high, the electrode cleaning period is frequent, electrode abrasion is accelerated, the electrode corrosion rate is increased, and the service life of the mine electromagnetic flowmeter and the electrode measurement accuracy are affected are solved.

The present invention relates to the field of square aluminum shell batteries, specifically a modular square aluminum shell battery device for an energy storage station, comprising a replenishing mechanism for filling a graphite layer and a passivation film; a top cover, below which is provided a storage shell for storing and connecting a plurality of square aluminum shell batteries; a suspended platform fixedly mounted at the bottom of the inner cavity of the storage shell, on which a battery shell is provided, wherein the suspended platform is used to suspend the battery shell for more efficient heat dissipation. The modular square aluminum shell battery device of the energy storage station is perfectly embedded with a fitting plate through the bottom of a covering sheet. At this time, the covering sheet replaces the dissolved separator to block the electrolyte from the negative electrode material, thereby preventing the passivation film from rupturing and allowing the electrolyte to contact the positive and negative electrodes. It also helps to prevent electrode corrosion, battery self-discharge, and gas production.

The invention discloses an extra-high voltage direct current grounding electrode corrosion hidden danger early warning method, device and equipment and a medium, and relates to the technical field of electric power system grounding electrode corrosion monitoring. The method comprises the following steps: acquiring operation parameters and environmental parameters of the extra-high voltage direct current grounding electrode in real time and preprocessing the parameters to obtain standardized data; wherein the operation parameters at least comprise at least one of a decay time constant and grounding resistance; constructing a corrosion prediction model based on the convolutional neural network, and inputting the standardized data to obtain a corrosion development trend prediction result of the grounding electrode; and performing time sequence analysis on the corrosion development trend prediction result to identify an abnormal change mode in the grounding electrode corrosion process, and generating and outputting graded early warning information based on the corrosion development trend prediction result and the abnormal change mode. According to the technical scheme, the problems that traditional manual inspection lags behind, an existing monitoring means lacks a prediction function and the like are solved, and early warning and fine management of corrosion risks are achieved.

The application belongs to the technical field of aqueous zinc ion batteries, and specifically discloses an aqueous zinc ion battery electrolyte additive, an electrolyte and application thereof. The application provides application of a compound as shown in structure (I) as an electrolyte additive in an aqueous zinc ion battery, wherein R + represents one or more of H + , Na + and K + . The compound as an electrolyte additive in the aqueous zinc ion battery can improve the interface environment between the electrolyte and the zinc negative electrode, promote uniform distribution of an electric field and a zinc ion concentration field, reduce nucleation potential, and make the zinc deposition process more uniform. The compound can effectively solve the problems of zinc dendrite growth, zinc negative electrode corrosion and surface passivation, effectively reduce the consumption of the electrolyte, improve the utilization rate of zinc, and thus improve the rate performance and cycle performance of the aqueous zinc ion battery.

The invention relates to an integrated non-alkaline gel zinc air battery and a preparation method thereof, and belongs to the technical field of zinc air batteries. The battery comprises a zinc negative electrode, an air positive electrode, a gel electrolyte and a packaging body, and the gel electrolyte is formed by in-situ gelation of a liquid precursor containing a non-alkaline zinc salt solution and a gelling agent in the packaging body, so that an integrated close contact structure is formed between the electrodes and the electrolyte. According to the invention, the problems of easy carbonation failure and electrode corrosion of the traditional alkaline electrolyte are solved through a non-alkaline system, and the long-term stability and cycle life of the battery in the air are obviously improved and prolonged. Meanwhile, the process of combining liquid perfusion and in-situ gelation solves the problems of poor interface contact of the solid electrolyte and easy leakage of the liquid electrolyte, and realizes low interface impedance and high ion transmission efficiency. The method is simple in process, does not need a cross-linking agent, can be completed through the steps of heating, stirring and cooling, is suitable for large-scale production, and has high safety and excellent electrochemical performance.

The invention relates to the technical field of water-based zinc ion batteries, in particular to a water-based zinc ion battery and a protection method and a protection layer of a negative electrode of the water-based zinc ion battery. The method comprises the following steps: coating the surface of a zinc negative electrode of the aqueous zinc ion battery with a layer of polybenzimidazole, and curing to form a film; the coated zinc negative electrode is soaked in a soluble zinc salt solution, so that polybenzimidazole and zinc salt are subjected to a metal coordination reaction, and a protective layer is formed after drying; and performing laser carbonization treatment on the protective layer subjected to metal coordination to form a carbonized protective layer. The thickness of the protective layer is 50-100 [mu] m, preferably 70 [mu] m, zinc negative electrode corrosion, dendritic crystal growth and hydrogen evolution reaction can be effectively inhibited, and the cycle stability of the battery is remarkably improved. The battery adopting the protective layer shows excellent performance in a long-cycle test, the interface impedance is reduced, and the electrochemical stability is enhanced.

The invention provides an aqueous zinc ion battery electrolyte containing a phosphate salt type anionic surfactant as well as a preparation method and application of the aqueous zinc ion battery electrolyte. The electrolyte consists of soluble zinc salt, a phosphate salt type anionic surfactant additive and chromatographic water, the phosphate salt type anionic surfactant additive is adopted to modify the traditional aqueous zinc ion battery electrolyte, so that the zinc negative electrode is protected, and the cycle life of the zinc negative electrode is greatly prolonged under the condition of high utilization efficiency. The phosphate salt type anionic surfactant and water molecules in the zinc ion solvation shell layer form hydrogen bonds, so that the activity of the water molecules is inhibited, the hydrogen evolution reaction is reduced, and the utilization efficiency of the zinc negative electrode of the aqueous zinc ion battery is improved; positive ions in the phosphate salt type anionic surfactant are preferentially adsorbed on the surface of a zinc negative electrode, so that dendritic crystal growth caused by a point effect is inhibited, and the cycle life of the water-based zinc ion battery is prolonged. The problems of hydrogen evolution reaction and electrode corrosion on the zinc negative electrode side of the water-based zinc ion battery are solved, and the practical application of the water-based zinc ion battery is promoted.

The invention discloses an electrolyte and a nickel-zinc battery. The electrolyte comprises alkali liquor and an additive, the concentration of the alkali liquor is not lower than 13mol / L and does not exceed the saturation concentration of the alkali liquor at 25 DEG C; the additive comprises one or more of an organic corrosion inhibitor, titanate, a carbon-based nano material and a buffering agent. The performance of the nickel-zinc battery is improved by adding the corrosion inhibitor, the titanate, the carbon-based nano material and / or the buffering agent into the electrolyte. Specifically, the corrosion inhibitor can form a layer of compact adsorption film on the surface of the zinc electrode, so that zinc is effectively prevented from being in contact with alkali liquor in electrolyte, dissolution and corrosion of zinc are reduced, and the service life of the battery is prolonged; the titanate can form a protective layer on the surface of the electrode, so that the growth of zinc dendrites is reduced, and the service life of the battery is prolonged; the carbon-based nano material can improve the conductivity and uniformity of the electrolyte, reduce the local current density on the electrode and prevent dendritic crystal formation. The buffer agent can adjust the pH value of the electrolyte and reduce electrode corrosion and gassing reaction.

The invention provides an anti-interference broadband load, a preparation method and a circuit system, the anti-interference broadband load comprises an outer conductor, an inner conductor and a load sheet, the inner conductor is arranged in the outer conductor, one end is communicated with the outside, and the other end is provided with a slot; and the load sheet is also arranged in the outer conductor and comprises a circuit substrate, a resistive film, a grounding electrode and a butt joint electrode, the butt joint electrode can be inserted into the slot, the resistive film is in contact with the butt joint electrode, and the grounding electrode is connected with the circuit substrate and the outer conductor to be grounded. Through accurate design and stable connection of the three components, a closed microwave energy absorption system is constructed, exposure of a load sheet is avoided, resistance value drift caused by resistance film oxidation and electrode corrosion can be prevented, and the outer conductor can shield electromagnetic interference and ensure accurate energy absorption; the relative positions of all the structures are accurate, and impedance matching abnormity and linear distortion are avoided; meanwhile, the absorption precision is improved, the problem that the precision of an exposed structure is insufficient is solved, wide-band high-performance, high-stability and high-precision work is achieved, and adaptability, practicability and reliability are high.

To suppress corrosion of electrodes.SOLUTION: An electrode type boiler 1 includes: a water pipe 2; at least a pair of electrodes 6 disposed inside of the water pipe 2; and a water supply line 8 connected to an upper part of the water pipe 2.SELECTED DRAWING: Figure 1

This application relates to the field of conductivity measurement technology, specifically to a non-contact conductivity measurement device. It includes a measurement unit, a signal processing unit, a temperature compensation unit, a power supply unit, and a sample container. The measurement unit includes a solenoid, a resistor, and a capacitor connected in series to form an RLC circuit module. The signal processing unit includes an analog-to-digital converter (ADC) and a processor, with the processor connected to the measurement unit via the ADC. The temperature compensation unit is connected to the processor and used to monitor the ambient temperature. The power supply unit is connected to the measurement unit, the signal processing unit, and the temperature compensation unit. The sample container is arranged at intervals between the measurement unit and the sample container and is used to hold reference samples. This application enables non-contact conductivity measurement, avoiding the electrode corrosion and cleaning problems inherent in contact measurements.

The invention discloses a double-aeration circulating type gas-liquid mixed dielectric barrier discharge wastewater degradation device. The device comprises a double-aeration circulating type gas-liquid mixed dielectric barrier discharge reactor, a high-voltage alternating current power supply, a peristaltic pump, a flow controller and a gas generator, the reactor comprises a discharge area and a rear area; the discharge area is provided with a dielectric tube and a high-voltage electrode which are coaxial, and the gap is a gas discharge area; the space between the medium pipe and the container 1 is used for storing a wastewater solution; a check valve and a microporous aeration head are arranged at an outlet of the medium pipe; the rear area comprises an aeration disc and a container 2; according to the device, gas enters the discharge area to generate active substances, primary gas-liquid mixing is performed through the microporous aeration head, then the gas flows out of the reactor, enters the aeration disc, is subjected to secondary mixing and then is discharged, and a wastewater solution is circularly degraded in the reactor through the peristaltic pump. The method has the advantages of capability of degrading large-volume wastewater, low electrode corrosion rate, high energy utilization rate and the like.

The invention relates to a new energy technology, belongs to the technical field of preparation of novel aqueous batteries, and particularly relates to a preparation method of a stable molybdenum trioxide-zinc metal battery in an acidic system. Molybdenum trioxide is used as a positive electrode active material, a mixed solution of aluminum salt and zinc salt is used as an electrolyte, zinc metal is used as a negative electrode, the existence of the aluminum salt can maintain the pH stability of the electrolyte, molybdenum trioxide is used as a positive electrode under an acidic condition, a large amount of protons are provided, and then reversible proton exchange of molybdenum trioxide is ensured. And meanwhile, the influence on zinc negative electrode corrosion under the acidic condition is relieved. Molybdenum trioxide is used as an electrochemical reaction of a battery positive electrode, an electrochemical oxidation-reduction reaction can be rapidly carried out in an environment in which aluminum salt exists, and meanwhile, the existence of the aluminum salt is beneficial to uniform deposition of zinc ions. Furthermore, the molybdenum trioxide-zinc battery is higher in specific capacity, higher in energy density, better in rate capability and longer in service life.

The application discloses a zinc battery negative electrode modified electrolyte, a preparation method and application, and belongs to the field of electrochemical energy storage materials. The preparation raw materials of the modified electrolyte include zinc salt, additive meldonium and solvent, and the raw materials can be dissolved and mixed at normal temperature to obtain the modified electrolyte. The application regulates the solvation structure of zinc ions by meldonium, weakens the direct action of active water molecules and the zinc negative electrode, and meanwhile, meldonium can spontaneously adsorb on the surface of the zinc negative electrode to form a stable interface protection layer, isolate free water molecules and guide the uniform nucleation of zinc, so that the zinc dendrite growth, hydrogen evolution side reaction and negative electrode corrosion passivation can be simultaneously inhibited, and the cycle stability and charge-discharge reversibility of the zinc battery are improved. The electrolyte preparation process is simple, the formula is compatible, is suitable for various mainstream aqueous zinc battery systems, and is suitable for large-scale energy storage rechargeable aqueous zinc ion batteries.

The utility model relates to the technical field of charging equipment, in particular to a charging device. The charging device comprises a shell, a fixed frame, a sliding frame, an electrode and a driving assembly. A containing cavity is formed in the shell, an avoiding hole is formed in the shell, and the avoiding hole is communicated with the containing cavity and the exterior of the shell. The fixing frame is arranged in the containing cavity and connected with the shell. The sliding frame is slidably arranged on the fixed frame. The electrode is arranged on the sliding frame. The driving assembly is arranged on the fixing frame, the driving assembly is in transmission connection with the sliding frame, and the driving assembly is used for driving the sliding frame to slide relative to the fixing frame in the first direction so as to drive at least part of the electrode to stretch out of the shell from the avoiding hole or drive the electrode to retract into the containing cavity from the avoiding hole. According to the charging device provided by the embodiment of the invention, when the charging device does not need to charge the to-be-charged equipment, the driving assembly can drive the electrode to retract to the accommodating cavity from the avoiding hole, so that the time of exposing the electrode out of the shell is shortened, and the problems of corrosion damage of the electrode and existence of potential safety hazards are solved.

The invention discloses an organic photovoltaic thin film battery assembly structure and a preparation method thereof. The preparation method comprises the following steps: etching a P1 wire slot on a transparent substrate, cutting off a bottom electrode layer, and then carrying out wet slit coating or dry vacuum coating; for a forward device, preparing a hole transport layer and an organic active layer in sequence; for a reverse device, preparing an electron transport layer and an organic active layer in sequence; a P1.5 wire duct and a P2.5 wire duct are sequentially etched on one side of the P1 wire duct, then slit coating or vacuum coating is carried out, and an electron transport layer is prepared for a forward device; for a reverse device, preparing a hole transport layer; a P2 trunking is etched in the middle position in the P1.5 trunking, and vacuum coating or coating of a top electrode layer is carried out; a P3 wire duct is etched at the middle position in the P2.5 wire duct, and an electron transport layer or a hole transport layer is used as a buffer layer, so that the organic active layer or the top electrode is prevented from being corroded, carrier recombination, ion migration and water-oxygen diffusion are blocked, and the risk of decomposition of the organic active layer is reduced.

The invention relates to the technical field of batteries, and discloses a nickel-zinc battery gel electrolyte capable of improving high-temperature performance and a battery preparation method, which comprises the following steps: mixing a monomer mixed solution containing potassium acrylate, polyethylene glycol methyl ether methacrylate, a cross-linking agent and an initiator with a mixed alkali solution system to prepare a pre-polymerized solution; assembling the positive plate, the negative plate and the diaphragm, and injecting the prepolymerization liquid; and heating to initiate in-situ polymerization to form the gel electrolyte. The functional monomer PMEM is introduced to construct a three-dimensional polymer network with a flexible polyether side chain together with KAA, the network structure effectively binds water molecules, and side reactions such as positive electrode material structure collapse, oxygen evolution and zinc negative electrode corrosion caused by too high activity of the water molecules at high temperature are inhibited; meanwhile, PMEM ether oxygen atoms slow down diffusion and dissolution of the zinc negative electrode in the storage process; according to the prepared nickel-zinc battery, the high-temperature cycle life, the high-temperature floating charge life and the high-temperature charge retention rate are improved, and the problem that an existing nickel-zinc battery is poor in high-temperature performance is solved.

The invention discloses an electrolyte containing an imidazolyl compound as well as a preparation method and application of the electrolyte. The invention provides an electrolyte containing an imidazolyl compound, which comprises the following components in percentage by mass: 15-20% of lithium salt, 1-3% of imidazolyl compound, 0.5-1% of sulfur additive, 0.2-0.5% of carbonic ester additive, 0.5-1% of lithium salt additive and the balance of organic solvent. Multifunctional protection is achieved through the synergistic effect of imidazole rings and carboxylic ester groups in molecules; uniform and compact low-impedance CEI / SEI double-interface films can be formed on the surfaces of the positive electrode and the negative electrode respectively, and continuous decomposition of an electrolyte and non-uniform Li < + > embedding are reduced; the electrolyte can be used as an electrolyte, HF generated by hydrolysis of LiPF6 in the electrolyte can be efficiently removed by virtue of alkalescence of nitrogen atoms of an imidazole ring, electrolyte acidification and electrode corrosion are inhibited, and meanwhile, positive electrode metal dissolution is remarkably reduced by virtue of coordination of the nitrogen atoms and transition metal ions such as Ni < 2 + >, Co < 3 + > and Mn < 4 + >, so that the stable electrode structure is maintained.

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.

The invention discloses a wide-temperature-range wide-voltage eutectic gel electrolyte for a zinc ion battery as well as a preparation method and application of the eutectic gel electrolyte, and belongs to the field of zinc ion battery electrolytes. Zinc salt and ethylene glycol are blended to form a deep eutectic solution to dissolve polyvinyl alcohol, and the eutectic gel electrolyte is prepared through a freeze-thaw method. According to the gel electrolyte, under the conditions that an aqueous solution is not introduced to dissolve the polyvinyl alcohol and the gel electrolyte does not need to be soaked in an aqueous electrolyte, the freezing point of the gel electrolyte is effectively reduced, and adverse side reactions such as hydrogen evolution, zinc negative electrode corrosion and dendritic crystal growth induced by active water molecules are inhibited. The eutectic gel electrolyte has the characteristics of wide voltage window and wide temperature range, when the eutectic gel electrolyte is used for the zinc ion battery, the stability of a zinc negative electrode can be improved, the working voltage (2.6 V) of the zinc ion battery is widened, and the normal use of the zinc ion battery at the ultralow temperature (-80 DEG C and below) is met.

The utility model discloses a kind of self-cleaning dry-type electrostatic precipitators, including shell, the inside transverse of shell is passed through and is provided with dust collecting electrode, several corona poles are longitudinally arranged between the dust collecting electrode, the upper and lower ends of the shell are respectively provided with exhaust pipe, air inlet pipe and dust removal port, driving slide rail is symmetrically arranged on the inner wall of the shell, symmetrically slidingly connected with mounting seat between the driving slide rail, lifting mechanism is arranged on the mounting seat, the upper end of the lifting mechanism is provided with scraping assembly for cleaning the surface of the dust collecting electrode. The utility model is simple in structure, reasonable in design, dust particles on the surface of dust collecting electrode are cleaned by scraping, compared with mechanical vibration, secondary dust raising will not be produced, and the cleaning of dust with strong viscosity is also more thorough, can effectively prevent the generation of stubborn dust, effectively improve dust removal efficiency, avoid the occurrence of electrode corrosion and the like.

The invention relates to the technical field of lithium ion batteries, in particular to a lithium ion battery ferrous oxalate composite material and a preparation method thereof. Carrying out cold separation on the ferrous sulfate solution to obtain ferrous sulfate heptahydrate crystals, and dissolving after centrifugal dewatering; the raw material utilization rate and purity are improved, impurities such as oil stains, silicon fibers, heavy metal and zinc salt are removed through the alkali washing and acidification purification process of the zinc smelting secondary iron powder, the purity of the final ferrous oxalate product is improved, and the negative influence of the impurities on the electrochemical performance is reduced; the ferrous sulfate cold separation crystallization and multi-stage washing process reduces sulfate radical residues, electrode corrosion caused by sulfate radicals is avoided, inert gas protection is adopted in the whole process, ferrous oxalate is prevented from being oxidized, and washing wastewater can be recycled after being simply treated.

The invention belongs to the technical field of wastewater treatment production, and discloses electrolyte production equipment which comprises a mixing assembly, a turning assembly and a triggering assembly, the mixing assembly is of a groove-shaped structure and comprises a titanium-based platinum-plated anode and a stainless steel cathode, the titanium-based platinum-plated anode and the stainless steel cathode work at regular time, the voltage is lower than the electrolyte decomposition voltage, and the turning assembly is connected with the stirring assembly. The double electric layers on the surfaces of the bubbles are disturbed through an alternating electric field, tiny bubbles are prompted to be combined into large bubbles to be gathered towards the anode, and the bubbles move towards the titanium-based platinum-plated anode and are gathered. High-frequency square-wave pulses are applied through a titanium-based platinum-plated anode and a stainless steel cathode through a mixing assembly, under a non-equilibrium electric field, double electric layers on the surfaces of bubbles are disturbed, and tiny bubbles are combined into large bubbles and move towards the anode. The square wave pulse voltage is lower than the decomposition voltage, side reaction is avoided, the electrode corrosion rate is reduced, and bubbles and gas in the bubbles are effectively eliminated.