65 results about "ZINC PASTE" patented technology

The invention discloses a zinc air battery with a miroporous membrane. Compared with the prior art, the zinc air battery overcomes the shortcoming of high water loss rate caused by the exposure to air of a gas diffusion electrode of a zinc air battery in a discharging process under environmental influence. The zinc air battery comprises a battery jar (6) and a current collector (5) on the upper part of the battery jar (6). Zinc paste (4) is laid on the current collector (5). An air electrode is arranged on the zinc paste (4) through a diaphragm, and is formed by covering the gas diffusion electrode (2) by the microporous membrane (1). The microporous membrane is a unique passage for oxygen and water vapor exchange between the zinc air battery and the outside, so that the normal passage of oxygen is ensured, water vapor is difficult to lose, the performance of the battery is improved, and the service life of the battery is prolonged.

The invention provides an overstocked type zinc-air cell monomer, which comprises a pedestal frame, an alkali resistant metal negative plate is hermitically fixed at one side surface of a pedestal frame, the alkali resistant metal negative plate and the pedestal frame form an openmouthed fuel bunker, zinc paste is provided in the fuel bunker, a separator paper is hermitically provided on the fuel bunker; a fluid replacement port is provided on the pedestal frame, a fluid replacement bath communicated with the fluid replacement port is provided on the pedestal frame, a group of liquid inlet ports communicated with the fuel bunker are provided on the pedestal frame at the inner side of the fluid replacement bath, a seal groove is provided on the pedestal frame at outside of the fluid replacement bath, a sealing strip is provided in the seal groove, air electrode is provided over the sealing strip, an overstocking device is arranged on the air electrode in a compaction mode. The overstocked type zinc-air cell monomer solves the problems that the conductive path of the zinc-air cell electron is long, the recovery and regeneration waste time and labor, and the volume is large and easy to deform. The conductive path of cell pack assembled by the cell monomer can be effectively shortened, the flowing cross-sectional area of source is increased, and the internal resistance is reduced. The invention has the advantage of simple components installation and operation, and the loss of the components is reduced.

The invention discloses a production method and device for a pasty zinc flake pigment. Spherical zinc powder, a grinding modifier and a grinding aid solvent are compounded, the compounded material is put into a grinder for grinding, and the material obtained after grinding is ground. The slurry is sent to the solid-liquid separator for the initial solid-liquid separation to obtain the initial paste zinc flakes, put the initial paste zinc flakes into the mixing tank, add an organic solvent containing a surface modifier, and treat the initial paste zinc flakes surface For modification, send the surface-modified primary paste zinc flake slurry into a solid-liquid separator for solid-liquid separation again to obtain a secondary paste zinc flake, and send the secondary paste zinc flake and dispersant into the In the kneader, high-speed kneading is carried out to obtain pasty zinc flake pigments. By adopting the technical solution of the invention, it is possible to produce paste-like zinc flakes with high metal zinc content and good quality.

The invention discloses a zinc-manganese battery, and particularly relates to a zinc-oxide-containing alkaline zinc-manganese battery and a preparation method thereof. The zinc-oxide-containing alkaline zinc-manganese battery comprises a negative electrode zinc paste, a positive electrode ring, a separation membrane, and electrolytic solutions respectively used for the positive electrode ring, thenegative electrode zinc paste and the separation membrane, wherein the negative electrode zinc paste is prepared from zinc powder, zinc oxide, sodium silicate and a binder, the positive electrode ring is prepared from electrolytic manganese dioxide and an electric conduction agent, the separation membrane is prepared from a paper pulp or fiber mixture, all the electrolytic solutions are potassiumhydroxide aqueous solutions, and the electrolytic solution for the negative electrode zinc paste contains zinc oxide. According to the present invention, the zinc-oxide-containing alkaline zinc-manganese battery is provided under the premise of the increasing demand of the market on the high-power alkaline zinc-manganese batteries, such that the utilization rate of the zinc powder is increased while the hydrogen evolution of the zinc powder is inhibited to a certain extent; and by matching the optimized battery positive electrode, the optimized battery negative electrode and the alkali liquidconcentration ratio, the alkaline zinc-manganese battery produced according to the formula has the significantly-increased high-current discharge performance.

The invention relates to a mercury-free lead-free alkaline button battery. The battery comprises a negative electrode cover, a negative electrode current collector, a sealing rubber ring, negative electrode zinc paste, a separator, a positive electrode material and a positive electrode housing, wherein the negative electrode current collector is arranged on the inner side of the negative electrode cover, the shape and size of the outer side of the negative electrode current collector are the same as those of the inner side of the negative electrode cover, the outer surface of the negative electrode current collector is in close fit with the inner surface of the negative electrode cover, and the inner surface of the negative electrode current collector is in contact with the negative electrode zinc paste. Aluminum, copper, aluminum alloy or copper alloy sheet with good conductive properties are utilized for manufacturing the negative electrode current collector, the surface of the aluminum, copper, aluminum alloy or copper alloy sheet is coated with indium, tin, indium alloy or tin alloy plating, and the collector is made by stamping. According to the invention, the negative electrode current collector is capable of effectively preventing the self-discharge hydrogen evolution of the battery, and also effectively avoiding phenomena such as gaseous distention, liquid leakage, cover blasting and even an explosion of the battery, which are caused by contact between the negative electrode zinc paste and the negative electrode cover, so that the safety performance and storage performance of the battery are improved. According to the invention, no deplating is needed, so that resources are saved, and the battery achieves environment-friendly and pollution-free effects.

The invention provides a mercury-free zinc paste of a button alkaline zinc-manganese dioxide cell and a preparation method for the mercury-free zinc paste. The preparation method comprises the following steps of: preparing the following raw materials in percentage by mass: 98 to 99.05 percent of mercury-free zinc powder, 0.4 to 1.9 percent of an adhesion agent, 0.01 to 0.6 percent of indium hydroxide and 0.05 to 1.5 percent of zinc oxide, wherein the adhesion agent comprises sodium carboxymethylcellulose and sodium polyacrylate, and the mass ratio of the sodium carboxymethylcellulose to the sodium polyacrylate is 0.1 to 10; grinding the raw materials in three-dimensional nonmetal ball milling mixing equipment for 5 to 100 minutes; adding electrolyte of which the mass is 38 to 43 percent of that of the mixture into the ball milling mixing equipment; vacuumizing the ball milling mixing equipment to be below 0.01 MPa; and mixing for 10 to 100 minutes to obtain the zinc paste. According to the preparation method, the used substances are mixed into a paste and treated under a vacuum condition, gases generated during the preparation of the zinc paste are exhausted, and the indium hydroxide is added to replace mercury so as to prevent the generation of gases, so that the environment is not polluted. Moreover, the sodium carboxymethylcellulose is added to prevent dispersed zinc powder from sedimentation and agglomeration because the viscosity of a zinc electrode is reduced, and the sodium carboxymethylcellulose acts together with the indium hydroxide to ensure that the cell shows high discharge performance. Therefore, the cell cannot deform by swelling, so that the cell can be conveniently stored, and the environment is not polluted because the indium hydroxide is added into the zinc paste to replace the mercury so as to prevent the generation of gases. The zinc paste prepared by the preparation method can be applied to mercury-free button cells.

The invention discloses an alkaline zinc-manganese battery containing modified nano zinc powder. The alkaline zinc-manganese battery includes a positive electrode ring, negative electrode zinc paste,a separator, and an electrolyte. The positive electrode ring is made of electrolytic manganese dioxide, a conductive agent and an electrolyte. The negative electrode zinc paste is composed of, by mass, 52 to 68 wt% of modified nano zinc powder, 2 to 5 wt% of binder, 27 to 45 wt% of electrolyte, and 1 to 2.5 wt% of compound additive. According to the invention, the zinc-manganese battery does not contain any lead-containing and mercury-containing materials, and prevents problems such as battery expansion, leakage, and gas evolution during use; and the prepared battery is environmentally safe and stable in performance, and has a long service life. The invention further discloses a preparation method of the alkaline zinc-manganese battery containing modified nano zinc powder.

The invention discloses an alkali button cell and a negative electrode combination. The alkali button cell comprises a positive electrode cup, a negative electrode top, an annular sealing ring, a positive electrode cake, a diaphragm and zinc paste, wherein the positive electrode cup and the negative electrode top are insulated through the annular sealing ring; the positive electrode cake and the zinc plate are isolated through the diaphragm; the negative electrode top comprises an integrally-formed central region, and an annular bending part on the periphery of the central region; the annular bending part comprises an annular inner wall, an annular outer wall and an annular connecting part between the annular inner wall and the annular outer wall; the lower end plane of the annular connecting part is an annular plane which is 0.2-0.4mm in width; and the lower end plane of the annular connecting part is immersed with glue and then fixed with the annular sealing ring through gluing. The alkali button cell has the advantages as follows: the lower end plane of the annular connecting part of the negative electrode top is the annular plane which is 0.2-0.4mm in width; and by designing the circular-arc-shaped lower end of the negative electrode top into the planar shape, when the lower end plane of the negative electrode top is immersed with glue, the planar-shaped contact part can be glued with more glue, so that the gluing effect between the negative electrode top and the sealing ring can be better.