40results about How to "Reduce Sulfation" patented technology

A lead powder coated with metal element doped with carbon as negative electrode material of lead-carbon battery is characterized in that carbon containing metal element is coated on the surface of lead oxide particles constituting the lead powder. The preparation method of the material is as follows: first, add the soluble salt solution of the metal element as the hydrogen evolution inhibitor into the complexing agent solution, and mix evenly; after the metal ion and the complexing agent react completely to form a metal ion complex solution, the lead Add the powder into the complex solution and stir well, heat to remove water, so that the complex is coated on the surface of the lead powder particles; finally, the product is carbonized in an inert gas to obtain a metal element-doped carbon-coated lead powder . The feature of this method is that the carbon coating of lead powder and the suppression of hydrogen evolution modification of the coated carbon can be realized at one time through in-situ compounding. The metal element-doped carbon-coated lead powder composite lead-carbon battery negative electrode material has good electrochemical performance.

The invention relates to a superbattery negative plate and a manufacturing method thereof. A front surface coating adopting lead powder as a main component is coated on the front surface of a substrate, and a carbon material coating is coated on the back surface of the substrate. The front surface coating comprises the following components by weight percent relative to the content of the lead powder: 0.2 to 2.0(wt)% of acetylene black, 1.0 to 2.0 (wt)% of barium sulfate, 0.2 to 0.5 (wt)% of lignin, 0.3 to 0.5 (wt)% of humic acid, 0.1 to 0.8 (wt)% of short fibers and 1 to 5.0(wt)% of adhesives. The carbon material coating 3 comprises the following components by weight percent: 65 to 90(wt)% of carbon material, 5 to 25(wt)% of acetylene black and 1 to 10(wt)% of adhesives. The carbon layer having a double-electric-layer structure is introduced onto the traditional storage battery negative plate, so that the superbattery has high specific power and can be charged and discharged at a large current, the sulfation of the lead paste on the front surface of a cathode at the HRPSOC (high-rate partial state of charge) state can be reduced, and the HEV (hybrid electrical vehicle) application can be met.

The invention relates to a high-temperature heavy-load negative lead paste for a start-stop battery and a preparation method of the negative lead paste, and belongs to the technical field of electrochemistry. The high-temperature heavy-load negative lead paste for the start-stop battery is prepared from the following components: dilute sulfuric acid with the density rho of 1.38g / mL, deionized water, a high-performance organic additive Expander 1, a high-performance organic additive Expander 2, a conductive polyester staple fiber, barium sulfate, a carbon material additive Carbon A and lead powder. The invention provides the high-temperature heavy-load negative lead paste for the start-stop battery with long service lifetime and deep discharge cycle performance under the partial state of charge and a preparation method of the negative lead paste. The negative electrode produced by the formula can significantly improve sulfation of the negative electrode under the partial state of charge, reduces the electrochemical polarization phenomenon of the battery in the high-temperature deep circulating charge and discharge processes, and improves the conductivity and the electrochemical property of the negative electrode and the thermodynamic structure stability, so that the high-temperature deep discharge cycle lifetime of the negative electrode under the partial state of charge is prolonged.

The invention relates to the field of lead carbon batteries, and discloses lead carbon battery negative electrode lead plaster for energy storage and a preparation method thereof. The negative electrode lead plaster is prepared from the following components in parts by weight: 100 parts of lead powder, 6-9 parts of sulfuric acid, 8-13 parts of deionized water, 0.5-1.0 part of barium sulfate, 0.1-0.3 part of lignin, 0.1-0.5 part of graphite, 0.1-0.3 part of carbon black, 0.01-0.10 part of stearic acid, 0.2-0.5 part of polyethylene glycol, 0.5-1.0 part of activated carbon, 0.1-0.6 part of carbonnano tube doped graphene nanosheet, 0.01-0.06 part of indium oxide and 0.08-0.15 part of short fibers. Through improving a formula of the negative electrode lead plaster of the lead carbon battery and the preparation method thereof, the charging receptivity of the battery is improved, the sulfation of a negative electrode is slowed down, the water consumption of the battery is reduced, and the practical service life of the lead carbon battery is further prolonged.

The present invention relates to the technical field of lead-acid batteries, in particular to a tubular battery positive lead paste and a preparation method thereof. The tubular battery positive lead paste comprises the following components in parts by weight: 25-80 parts of lead powder, Pb 3 o 4 20 to 75 parts, 8 to 12 parts of sulfuric acid, 8 to 13 parts of deionized water, 0.2 to 2.0 parts of tetrabasic lead sulfate, 0.2 to 0.8 parts of sodium sulfate, 0.05 to 1.8 parts of stannous sulfate, and 0.01 to 0.1 parts of carbon nanotubes and 0.1 to 0.6 parts of polyethylene glycol. The cathode lead paste of the tubular battery of the present invention can significantly improve the pass rate of extruded paste of the tubular positive plate, reduce the manufacturing process cost of the battery; significantly improve the formation effect of the tubular positive plate, and reduce the gap between the upper and lower parts of the plate. The formation difference; the improvement of the formation effect and the decrease of the internal resistance of the positive electrode active material increase the utilization rate of the positive electrode active material and the capacity of the battery; further enhance the charging acceptance capacity of the battery, and effectively slow down the sulfuric acid on the positive electrode of the tubular battery. Salinization significantly improves the cycle life of tubular batteries.

The invention relates to a partially-graphitized active carbon-based lead-carbon battery composite additive, a preparation method and applications thereof, wherein graphite ribbons are distributed inactive carbon particles, the graphite ribbon content in the carbon particles is 0.1-50 wt%, the active carbon particles contain lead as a hydrogen evolution inhibitor, the specific surface area of thematerial is 10-3000 m<2> / g, the electrical conductivity is 0.01-100 S / cm, and the lead content is 0.01-30 wt%. According to the present invention, the preparation process has advantages of simple steps, low energy consumption, low water consumption, low production cost and the like; and the lead-carbon battery with the negative electrode doped with the lead poisoning partially-graphitized activecarbon has excellent charging / discharging reaction reversibility, excellent charging / discharging cycle life and excellent charging receiving capability compared to the traditional lead acid battery.