20 results about "ZINC PASTE" patented technology

The invention discloses an alkaline zinc-manganese battery capable of preventing top short circuit, which comprises a steel shell internally and coaxially provided with an isolation pipe; an annular cavity is formed between the isolation pipe and the steel shell, and the annular cavity is filled with an annular positive electrode; a center cavity of the isolation tube is filled with negative electrode zinc paste; an insulating layer for electronic insulation is further arranged in the annular cavity, the insulating layer is in an annular sheet shape, the insulating layer is attached to the top face of the annular positive electrode and completely covers the top face, the inner edge of the insulating layer is tightly attached to the outer wall of the isolation pipe, and the outer edge of the insulating layer is tightly attached to the inner wall of the steel shell. According to the invention, the insulating layer is additionally arranged at the top of the annular positive electrode, so that negative electrode zinc paste overflowing out of the isolation tube after vibration can be prevented from being in contact with the top end of the annular positive electrode under the condition of violent vibration or over-discharge, and the risk of internal short circuit is effectively reduced; moreover, the formula and dosage of the annular anode zinc paste and the annular cathode zinc paste are kept unchanged, the operation is simple, and the electrical property is not sacrificed.

The invention discloses a low-temperature-resistant negative electrode zinc paste and a low-temperature alkaline zinc-manganese battery containing the zinc paste. The negative electrode zinc paste comprises the following components in parts by weight: 60-65 parts of zinc powder, 1-2 parts of a composite conductive agent, 0.1-0.3 part of a composite corrosion inhibitor and 35-38 parts of a low-temperature electrolyte; the low-temperature electrolyte comprises a multi-element nonionic surfactant system, a multi-element nano anti-freezing agent system and a mixed solution A, the 3.9 ohm discharge capacity of the battery under the condition of-40 DEG C is larger than or equal to 60% compared with the capacity retention rate at normal temperature, the interface impedance amplification is smaller than or equal to 15%, the hydrogen evolution amount is reduced by 80% on year-on-year basis, the process is compatible with an existing production line, and the battery is suitable for polar scientific investigation and electronic equipment in plateau and cold regions.

The invention relates to the technical field of zinc-air power banks, and particularly discloses an integrated soft-package zinc-air battery series connection structure and method and a zinc-air battery power bank.The integrated soft-package zinc-air battery series connection structure comprises a first battery cell and a second battery cell, and the first battery cell comprises a first positive electrode, a first diaphragm, a first negative electrode current collector and zinc paste; the second battery cell comprises a second positive electrode, a second diaphragm, a second negative electrode current collector and zinc paste; the second positive electrode comprises a third gas-permeable membrane, a second positive electrode current collector, a fourth gas-permeable membrane and a second catalytic membrane which are sequentially stacked and compounded; according to the integrated soft package zinc-air battery series connection structure and method and the zinc-air battery power bank, through the integrated design of the second positive electrode current collector and the first battery cell negative electrode current collector, key procedures such as purchasing and assembling of connecting pieces and special-shaped cutting of the current collectors are omitted, the production period is greatly shortened, and the integrated soft package zinc-air battery series connection structure and method are suitable for a large-scale automatic production process.

The present invention relates to the technical field of zinc-air batteries, and in particular to a zinc-air battery. The air electrode sheet in the zinc-air battery of the present invention is waterproof and breathable, and the structural design of the zinc-air battery ensures the ingress of more air, maximizing the contact area between the air electrode sheet and the electrolyte, and allowing sufficient reaction on both sides of the negative electrode of the metal zinc paste battery cell. This results in excellent discharge performance for the zinc-air battery with this structure. When the voltage is maintained at a constant voltage of 0.9V, the specific capacity can reach over 700Ah / kg, the discharge energy density reaches over 670Wh / kg, the 24h current is over 3A, and the 72h current is over 1A.

The utility model provides an alkaline zinc-manganese battery which comprises a battery steel shell, a cathode current collector assembly is assembled at the upper end of the battery steel shell, an anode ring is coaxially embedded in the battery steel shell, an isolation tube is sleeved in a central cavity of the anode ring, and cathode zinc paste is filled in the isolation tube; an annular closed cavity is defined by the top surface of the positive electrode ring, the bottom surface of the negative electrode current collector assembly, the outer circumferential surface of the isolation tube and the inner circumferential surface of the battery steel shell, a hydrogen storage piece is embedded in the closed cavity, and the hydrogen storage piece is formed by pressing a hydrogen storage material. According to the alkaline zinc-manganese battery disclosed by the utility model, hydrogen generated in the battery can be transferred and stored in the hydrogen storage material in time, so that air pressure change in the battery caused by hydrogen evolution in the battery and side effects caused by the air pressure change are prevented.

The invention provides a soft package zinc-air battery with a single-layer shell. The soft package zinc-air battery with the single-layer shell comprises an air positive electrode, a diaphragm, a negative electrode current collector and the shell which are sequentially stacked from top to bottom, the air positive electrode comprises a first gas-permeable membrane, a positive electrode current collector, a second gas-permeable membrane and a catalytic membrane which are sequentially stacked from top to bottom, and the overall size of the air positive electrode is larger than the size of the diaphragm, so that the electrolyte is prevented from permeating outwards from the diaphragm; the edge of the shell is fixedly connected with the edge of the catalytic membrane, and a closed zinc paste accommodating cavity is formed between the shell and the diaphragm; and tab glue is arranged between the tab of the negative current collector and the air positive electrode. According to the soft package zinc-air battery with the single-layer shell, the air positive electrode has no special size limitation, the positive electrode current collector can be directly overlapped with the breathable film and the catalytic film and then integrally cut, the soft package zinc-air battery is adaptive to coiled material automatic production equipment, the material cost of the shell is also reduced, and the energy consumption and the production period of the equipment are reduced.

The application discloses a soft package zinc-air battery exhaust method and a soft package zinc-air battery, and relates to the technical field of zinc-air batteries. The application aims to solve the technical problem that, after the traditional soft package zinc-air battery is sealed by vacuum, the negative pressure in the battery causes the backflow of air to generate air bubbles, and the zinc paste is easy to contaminate the sealing position to cause poor sealing. The exhaust method comprises the following steps: combining an air positive electrode with a plastic film to make a bagged soft package zinc-air battery; injecting zinc paste to deposit it at the bottom of the battery, and leaving air at the upper part; sealing the upper end of the battery; and extruding the zinc paste from the bottom of the battery upwards to completely exhaust the internal air. The application utilizes the waterproof and air-permeable function of the air positive electrode, does not need to seal by vacuum, can realize that there is no zinc paste at the sealing position and no air bubbles in the battery core, improves the sealing reliability and discharge performance of the battery, and has a simple process and is suitable for large-scale production.

The present invention belongs to the field of battery preparation, and specifically relates to a low molecular weight sodium polyacrylate binder alkaline manganese battery negative electrode and a preparation method thereof. The negative electrode of the alkaline manganese battery is mainly made of zinc paste, and the zinc paste is composed of zinc powder, electrolyte, polyacrylic acid cross-linked resin and low molecular weight sodium polyacrylate (PAANa-L). The preparation steps are as follows: (1) 100g of zinc powder is mixed with 0.1-1g of polyacrylic acid cross-linked resin and stirred evenly; (2) 0.1-1g of sodium polyacrylate is added to the mixture in (1) and continued to stir thoroughly; (3) the mixed material in (2) is added to 40-60g of electrolyte, continuously stirred, and accompanied by negative pressure degassing to form a qualified zinc paste. The present invention selects PAANa with low molecular weight to fundamentally solve the problem of product drawing, and at the same time, it is matched with polyacrylate products with high viscosity to ensure product viscosity while having a stable diffusion effect.

The invention discloses a preparation process of zinc paste of an alkaline zinc-manganese battery, the zinc paste comprises the following raw materials: zinc powder, a binder, a corrosion inhibitor and an electrolyte, the binder comprises polyacrylic acid and low-acyl gellan gum, the mass percentage of the polyacrylic acid is 0.1-1%, and the mass percentage of the low-acyl gellan gum is 0.1-1%; the preparation method of the zinc cream comprises the following steps: 1) preparing low-acyl gellan gum; (2) preparing gellan gum mother liquor; (3) premixing the powder; and (4) dropwise adding the gellan gum mother liquor obtained in the step (2) into the premixed powder, stirring until the gellan gum mother liquor is uniformly dispersed, adding 25-30wt.% of KOH electrolyte, continuously stirring for 5-40 minutes, and carrying out vacuum defoaming to obtain the zinc paste. The low-acyl gellan gum prepared by the process has stability in a strong alkali environment, and zinc powder can be fixed by forming a rigid three-dimensional network structure, so that the rheological property, suspension stability and thixotropy of the zinc paste are improved, and the problems of solid-liquid separation and vibration resistance are solved.

The utility model discloses a kind of resistance testing devices of alkaline battery negative pole zinc paste, it is a sealed storage tank, it includes storage barrel, bucket cover and two electrodes;Storage barrel and bucket cover are both insulating products;The inner chamber of storage barrel is as zinc paste storage cavity;Bucket cover detachably fixed cover is located at the top of storage barrel, and the sealing of zinc paste storage cavity is carried out;Sealing washer is equipped at the connecting position of bucket cover and storage barrel;Two electrodes are respectively inserted and fixed on sealed storage tank;The inner end of each electrode is inserted into zinc paste storage cavity, and the outer end of electrode is all extended from the sealed storage tank.The utility model can directly, quickly measure the internal resistance of the measured alkaline battery negative pole zinc paste, realize the merit and shortcoming of directly evaluating zinc paste, avoid the trouble and waste of assembling into battery;Moreover, it provides airtight storage space for zinc paste, avoids zinc paste and air long-time contact to occur chemical reaction and influence the accuracy of measurement result;It is easy to operate.

The invention belongs to the technical field of zinc-manganese batteries, and particularly relates to an alkaline zinc-manganese battery and a preparation method thereof. The alkaline zinc-manganese battery comprises a shell, a positive electrode ring, a negative electrode zinc paste, a diaphragm and an electrolyte, the positive electrode ring consists of the following components in percentage by weight: 90-93 wt% of electrolytic manganese dioxide, 3-6 wt% of a composite additive, 0.5-1.5 wt% of a binder and the balance of electrolyte; the composite additive is prepared by the following preparation processes: uniformly mixing scandium and carbon powder, carrying out gradient sintering in an argon atmosphere, cooling, washing and drying to obtain scandium carbide; mixing sodium borohydride and scandium carbide, calcining in an argon atmosphere, cooling, washing and drying to obtain the composite additive. The alkaline zinc-manganese battery prepared by the invention is excellent in discharge performance and long in service life.

The application provides a non-flammable zinc paste for zinc powder anticorrosive paint and a preparation method thereof, and the preparation method comprises the following steps: step S1, preparing surface passivation treated flaky zinc powder; and step S2, putting the flaky zinc powder and a wetting agent into a kneader, and mixing and kneading under vacuum to obtain a paste-like zinc powder material; the wetting agent is at least one of dipropylene glycol butyl ether, dipropylene glyyl, and an epoxy resin additive; and the mass percentage of the flaky zinc powder is 67-82%. The zinc paste prepared by the technical scheme of the application is non-flammable, reduces the harm of fine zinc powder dust to human body and the risk coefficient of flammability and explosiveness in the process of use, storage and transportation, and can be universally applied to oil-based epoxy zinc powder paint, water-based epoxy zinc powder paint and Dacromet and other coatings.

The utility model discloses a limited special resistor constant resistance discharge silver oxide button cell, which comprises an outer shell, an inner shell, a positive electrode cake, a negative electrode zinc paste and a diaphragm layer, and adopts granulated silver oxide as a main component of a positive electrode powder material. Granulated silver oxide particles are high in porosity, transfer of electrolyte is facilitated, so that the discharge performance of the battery is improved, the stirring time of a positive electrode powder material in the manufacturing process can be shortened through the granulated silver oxide, a four-layer diaphragm structure of a common silver oxide button battery is simplified into a three-layer diaphragm structure, and the production efficiency is improved. According to the three-layer diaphragm structure, the internal resistance of the battery is effectively reduced, the discharge of the battery in a high-voltage region is facilitated, the discharge time is prolonged, and a limited special resistor is arranged in the battery in order to meet the requirement of a specific application scene on constant-resistance discharge of the battery. The resistor can ensure that the battery keeps a constant resistance value in the discharging process, so that the discharging stability and reliability of the battery are improved.

The utility model discloses a stirring device for improving the uniformity of zinc paste of an alkaline manganese battery, which comprises a zinc paste tank, zinc paste is arranged in the zinc paste tank, an upper cover is rotatably arranged on the upper side of the zinc paste tank, a clamp capable of rotating and driving the zinc paste tank to rotate is arranged on the lower side of the zinc paste tank, the upper cover is connected with a vacuum pump, and the vacuum pump is connected with a motor. The upper cover is connected with the zinc paste tank through a rotatable structure with sealing performance, the upper cover is connected with the vacuum pump through a gas guide pipe, gas generated by zinc powder self-dissolution and gas brought in in the stirring process are exhausted by increasing vacuum conditions, and meanwhile, centrifugal stirring and gravity-dependent mixing are carried out, so that the zinc paste can be fully mixed. The retaining structures of the adhesive and the zinc powder are not damaged.

The invention relates to the technical field of alkaline batteries, in particular to a negative electrode material for reducing internal resistance increase in the vibration process of an alkaline zinc-manganese battery and a preparation method of the negative electrode material. The negative electrode material is composed of the following components: 60 to 63 wt% of mercury-free alloy zinc powder, 9 to 11 wt% of potassium hydroxide, 22 to 24 wt% of deionized water, 2 to 4 wt% of carbon nanotube, 0.5 to 1.5 wt% of sodium polyacrylate, 0.5 to 1.5 wt% of bismuth oxide, and 0.04 to 0.06 wt% of a betaine surfactant. The preparation method of the negative electrode material comprises the following steps: mixing potassium hydroxide and deionized water to obtain a solution, ball-milling and mixing mercury-free alloy zinc powder, two carbon nanotubes, sodium polyacrylate, bismuth trioxide and dodecyl ethyoxyl sulphobetaine, adding a potassium hydroxide solution, carrying out wet stirring treatment, and carrying out vacuum defoaming, so as to obtain the mercury-free alloy zinc-based negative electrode material. The alkaline zinc-manganese battery negative electrode material is obtained. Through the effective implementation of the invention, the carbon nanotubes are introduced into the zinc paste to form a three-dimensional conductive network; a compact interface layer is formed through in-situ reaction of bismuth trioxide and zinc, and dendritic crystal growth is inhibited; and in combination with a flexible binder sodium polyacrylate, vibration energy is absorbed, the internal resistance increase of the battery in the vibration process can be remarkably reduced, and the open-circuit voltage and the internal resistance of the prepared battery before and after vibration are basically kept consistent.

The invention discloses an alkaline battery negative electrode material and a preparation method thereof, and the preparation method comprises the following steps: S1, zinc powder pretreatment: after zinc powder is cleaned by supercritical carbon dioxide, boron-containing gas is introduced for gas-phase coating passivation; s2, preparation of a composite surfactant mother solution: preparing the composite surfactant mother solution composed of polyether modified siloxane and the like; s3, performing vacuum wet mixing on zinc paste: performing dry mixing and pre-wetting on zinc powder and a surfactant, and performing wet mixing on the zinc powder and a KOH electrolyte in a vacuum kettle to prepare the paste; s4, paste injection and compaction: injecting the zinc paste into a negative electrode cup of the zinc-manganese alkaline battery, and performing compaction molding; impurities on the surface of the zinc powder are removed through supercritical carbon dioxide treatment, and a nano passive film is formed in the atmosphere of triethyl borane or methyl borate, so that corrosion and hydrogen evolution reaction are effectively inhibited; the composite surfactant can improve the wetting and dispersing performance of the zinc powder, and is matched with vacuum stirring and nitrogen defoaming processes to reduce bubble residues and improve the compactness of the zinc paste, so that the capacity stability of the alkaline battery is improved.

The utility model relates to the technical field of zinc paste adding machines, in particular to a zinc paste adding machine for zinc-manganese battery production. According to the technical scheme, the device comprises a supporting block, a box body, a rotating disc, a material injection pipe, a connecting plate, a material storage box and a support, a pneumatic pump is fixed to the lower end in the box body, a motor is fixed to the middle of the upper end in the box body, a rotating shaft is movably installed at the output end of the upper end of the motor, and the upper end of the rotating shaft extends to the outer side of the upper end of the box body; a bearing is fixed to the middle of the upper end face of the box body, a limiting plate is fixed to the upper end face of the bearing, the upper end of a rotating shaft is fixed to the middle of the limiting plate through the middle of the bearing, the support is fixed to the middle of one end of the upper end face of the box body, and a hydraulic cylinder is fixed to the middle of the lower side of the upper end of the support. A hydraulic rod is movably mounted at the lower end of the hydraulic cylinder, and the middle of one end of the upper end face of the connecting plate is welded to the lower end of the hydraulic rod. The calamine paste filling device has the advantage of being beneficial to filling the calamine paste.

The invention discloses a primary alkaline zinc-manganese battery negative electrode zinc paste. The zinc paste comprises the following components in percentage by mass: 0.02%-4% of a binder, 60%-75% of zinc powder, 25%-35% of an electrolyte and 0.01%-5% of a corrosion inhibitor, wherein the binder is composed of polyacrylic acid and potassium polyacrylate, the addition amount of the polyacrylic acid is 0.01%-2% of the total mass of the zinc cream, the addition amount of the potassium polyacrylate is 0.01%-2% of the total mass of the zinc cream, and the proportion of the rest raw materials in the total mass of the zinc cream is a conventional numerical value. When the zinc paste obtained by the invention is applied to the primary alkaline manganese battery, the ion conductivity of the battery can be effectively improved, and the impedance of the battery is reduced, so that the large-current mode performance is remarkably improved.

The utility model discloses a low-current constant-current discharge silver oxide button cell which comprises a positive pole shell, a first soldering lug is fixedly connected to the outer side of the positive pole shell, a protective shell is fixedly connected to the interior of the positive pole shell, and a polyethylene-acrylic acid grafting film is fixedly connected to the interior of the first soldering lug. Silver oxide used by a positive electrode filler material in the battery is granulated, that is, the silver oxide is granulated, the porosity of silver oxide particles is high, electrolyte is easy to transfer, the battery can maintain discharge in a high-voltage region and the discharge time is prolonged, and the used diaphragm comprises three layers, namely, one layer of polyethylene-acrylic acid grafted film and two layers of cellophane, so that the service life of the battery is prolonged. The polyethylene-acrylic acid grafted film is in contact with the positive electrode cake, the glass paper is in contact with the negative electrode filler, the negative electrode filler is zinc paste, and the three-layer diaphragm reduces the internal resistance of the battery, and is also beneficial to maintaining high-voltage region discharge and prolonging the discharge time of the battery.

The present application relates to a kind of flowable conductive zinc slurry and its preparation method and hydrogen production application, and the conductive zinc slurry includes zinc salt aqueous solution, conductive agent, dispersant and organic ligand, the mass ratio of zinc salt aqueous solution, conductive agent, dispersant and organic ligand is (50-280) :(10-60) :(5-50) :(5-40), the conductive zinc slurry is used as cathode slurry electrode liquid, for two-step hydrogen production.Compared with prior art, the present application provides a kind of efficient, safe, low-cost cycle process route to realize electrochemical efficient step-by-step water splitting hydrogen production, the coulomb efficiency of hydrogen production reaches more than 98%, while oxygen and zinc metal by-products can be obtained, and it has very high application value in the field of electrochemical water splitting hydrogen production technology.