55results about How to "Inhibition of sulfation" patented technology

The invention provides a low-temperature SCR (Selective Catalytic Reduction) catalyst based on an active coke loaded active component and a preparation method of the low-temperature SCR catalyst. The catalyst is suitable for SCR reaction of nitrogen oxides under the condition of low temperature. A Mn and Ce composite oxide is loaded on an active coke particle with a relatively high special surface area and mechanical strength, so that the SCR reaction temperature is reduced, the adsorption capability and mechanical wear resistance of the catalyst are improved, and the whole sulfate resistance and regeneration capability of the catalyst are improved. The preparation method provided by the invention is simple in step, artful in process design and convenient for industrial production. The catalyst provided by the invention takes the active coke particle as a carrier on which the Mn and Ce composite oxide is loaded. Oxides of modified elements can also be loaded on the carrier of the catalyst, wherein the modified elements are selected from one or more of the following elements: Fe, Zr, Si, Ti, V, Mo, W, Cr, Au, Ag, Pt, Pd, Rh and Co.

The invention discloses a mixing accumulator system, which is composed of a lead acid accumulator (1) constituted by at least one lead acid battery and a battery pack (3) composed of at least one ferric phosphate lithium battery, wherein, the ferric phosphate lithium battery pack (3) is connected in parallel with a first balanced protection control device (4). Compared with existing products, the products of this invention can prolong the service life of the lead acid battery under adverse behavior for more than three times, and can avoid the sulfation of the lead acid battery due to undercharging. The invention not only reduces the accumulator volume and weight when various systems adopts the lead acid battery alone, to save space for storing the accumulator, but also significantly reduces the cost of single use of ferric phosphate lithium battery.

The invention provides a lead-acid cell which belongs to the field of lead-acid cells, and can be used for solving the problems of poor large current performance and short cycle life of the existing lead-acid cell. Through adding conductive additive and carbon materials to a negative pole of the lead-acid cell, the lead-acid cell solves the problems of the poor large current performance, the short cycle life and the like of the existing lead-acid cell.

The invention discloses a repairing liquid of a lead-acid storage battery, which is prepared through the following steps: preparing materials according to the following formula (weight percent): 90-94.5% of de-ionized water, 2.5-4.0% of nano silicon nitride powder, 0.5-1.0% of poly N-vinyl pyrrolidone, 0.5-1.0% of polyethylene glycol, 0.5-1.0% of relative low molecular sodium polyacrylate dispersing agent, 0.5-1.0% of polyvinyl alcohol, 0.5-1.0% of polyethylene amide, 0.5-1.0% of preservative; placing the materials in a glass or enamel heating kettle, heating up to 80-85 DEG, preserving temperature to obtain a semitransparent solution so as to obtain the repairing liquid. The repairing liquid can effectively dissolve and remove the lead sulfate crystal on a battery polar plate, recovers the function of the polar plate, repairs the failed lead-acid storage battery, and forms a protecting film on the surface of the battery polar plate, so that the battery polar plate does not crystallize the lead sulfate, and the service life of the battery is prolonged.

The invention discloses a preparation method of a cathode active substance for a lead carbon battery, and belongs to the technical field of the manufacturing of lead-acid storage batteries. The special lead carbon battery and a paste device are adopted, the components are mixed in the optimum proportion, and the dry mixing time, the wet mixing time and the acid mixing time in all steps are controlled, so that cathode lead paste for the lead carbon battery, which is good in production quality (the dispersity of carbon material is good), is controllable in process, and satisfies the requirements for battery performance, is obtained. Through the adoption of the lead paste, the large-current charging and discharging receptivity of the battery, and the cycle performance of the battery under a partial state of charge can be obviously improved, and the sulfation of the surfaces of electrodes can be inhibited, so that the battery has high power capacity and long cycle life.

The present invention relates to agents for suppressing pulmonary emphysematous lesions and agents for suppressing emphysematous lesions which are suitable for treating and/or preventing COPD, which comprise as an active ingredient a substance having an activity of promoting CSPG degradation, inhibiting CSPG synthesis, or inhibiting CSPG sulfation (examples of such agents are: chondroitinase ABC, C6ST antisense agents, and GalNAc antisense agents); agents for treating and/or preventing COPD; methods for suppressing emphysematous lesions; and methods for treating and/or preventing COPD.

The invention provides a low-temperature anti-sulfur SCR denitration catalyst by taking an organic porous material as a carrier and a preparation method thereof. The method is characterized in that an immersion method is employed, one or more than two of metal element oxides of Mn, Fe, Cu, Co, Ce, and Zr can be loaded on the organic porous material, the material is subjected to silicatization, and the operating temperature of the catalyst is 120-250 DEG C. The catalyst takes the organic porous material with large specific surface area as the carrier, disperse optimization of the active components and catalysis cooperation among the components are realized, so that good low temperature denitration activity can be obtained, after silicatization, active site contact of SO2 and the catalyst can be effectively isolated, problem of easy SO2 poisoning of the low temperature denitration catalyst can be effectively solved, and the method has good prospect in denitration industrialization application of low temperature sulfur-containing flue gas.

The invention discloses a tubular negative plate of a lead-carbon battery. The negative plate comprises a negative plate grid and filled active substance powder, wherein the negative plate grid is of a fence structure consisting of transverse beams and conductive cores perpendicular to the transverse beams; a sleeve layer is arranged outside the negative plate grid; the gaps among the sleeve layer and the conductive cores is filled with the active substance; the active substances consist of the following substances in percentage by weight: 57-95% of lead powder, 1-40% of a capacitive carbon material, 0.1-0.5% of carbon black, 0.3-2% of barium sulfate, 0-1.2% of sodium lignin sulfonate, 0.5-2% of humic acid, 0.05-0.1% of short fiber. The tubular negative plate of the lead-carbon battery is simple in manufacturing process and easy to realize, a diachylon structure is stabilized and prevented from dropping off, and the service life of the battery is prolonged.

The invention relates to a graphitized active carbon-based composite additive, a preparation method and applications thereof, wherein the additive is metal-element-containing graphitized active carbonparticles, the carbon particles contain 0.1-50 wt% of carbon with a graphite structure, the specific surface area of the active carbon particles is 100-3000 m<2>/g, the electric conductivity of the active carbon particles is 0.01-100 S/cm, the metal element is one or more than two selected from Sn, Pb, Bi, Ce, In and Zn, and the metal element content in the additive is 0.01-30 wt%. According to the present invention, the lead-carbon battery negative electrode prepared by using the graphitized active carbon as the additive has advantages of high charge and discharge reversibility, high chargeand discharge cycle life and high charge acceptance compared to the conventional lead acid battery negative electrode.

The invention relates to a lead-acid storage battery repair fluid and a preparation method thereof. The lead-acid storage battery repair fluid comprises, by mass, 95%-98% of deionized water, 0.5%-2.5%of nanometer silicon nitride powder, 0.3%-0.8% of polyethylene glycol, 0.3%-0.8% of polyvinyl alcohol, 0.3%-0.8% of sodium polyacrylate, 0.3%-0.8% of polyvinylamide and 0.03%-0.2% of salicylic acid.The lead-acid storage battery repair fluid can effectively dissolve to remove lead sulfate crystals on the battery plate, recover the battery plate functions, repair the lead-acid storage battery losing efficacy because of sulfation and prolong the service life of the battery.

The invention discloses a preparation method of a high-power external application type lead-carbon battery negative electrode. The negative electrode consists of three parts, namely, lead plaster, a carbon plate and gel. The structure that the carbon plate is attached to the surface of the lead plaster can improve electrode potential distribution, inhibit surface sulfation and improve the effective utilization rate of active substances. When lead ions in an electrolyte contact with the carbon plate of the negative electrode, lead and lead sulfate oxidation-reduction circulation occurs on the surface of the carbon plate under the electrochemical action, sulfation is generated, and the power density and the cycling stability of the electrode are reduced. The gel can inhibit lead ions from contacting the surface of the carbon material, avoid reduction of the lead ions, inhibit sulfation of the surface of the carbon material, ensure normal exertion of beneficial effects of the carbon material, improve the charge-discharge efficiency of the electrode and prolong the cycle service life of the electrode. The external application type lead-carbon battery composed of the negative electrodehas higher large-current bearing capacity and cycling stability, and is suitable for the fields of start-stop automobiles, solar energy, wind energy storage and the like.

The present invention relates to an inner mixed and inner parallel hybrid lead-carbon battery. The structural feature of the battery is that a negative electrode of a lead-carbon battery is replaced with a negative electrode of an inner mixed lead-carbon battery. Since the charge acceptance capability, deep discharge capability and charge-discharge cycle stability of the negative electrode of theinner mixed lead-carbon battery are much higher than that of the negative electrode of the lead-carbon battery, the negative electrode of the inner mixed lead-carbon battery is introduced into an inner parallel lead-carbon battery, and the improvement of the output performance and stability of the battery is facilitated. An inner mixed and inner parallel hybrid lead-carbon super battery with different layout forms of negative electrodes has different properties, and different application requirements can be satisfied. The charge-discharge reaction reversibility, charge-discharge cycle life, and the charge acceptance capacity of the inner mixed and inner parallel hybrid lead-carbon battery are significantly better than that of a conventional lead-acid battery.

The invention discloses a method for preparing the cathode of an external applied lead-carbon battery. The cathode comprises an external applied carbon paste, wherein an electrode plate consists of lead powder, the carbon paste, humic acid, a short fiber, barium sulfate, sodium lignin sulfonate and acetylene black. An additive which can play a physical connection network function in a preparationprocess and can be polymerized in sulfuric acid to generat ester gel is added into the carbon paste, and the whole external applied electrode is wrapped in the gel with ion permeability, so that the physical connection of a carbon phase and a lead phase is enhanced. By adopting the electrode plate comprising the carbon paste, the carbon paste dropping velocity is effectively reduced, the advantages of an external applied electrode structure are sufficiently brought into play, the effective utilization rate of active substances is increased, a cathode sulfation phenomenon at a high magnification part charge state is alleviated, the energy density of the whole battery is improved, and the circulation service life of the battery is prolonged.

The invention discloses a negative electrode plate material of a tubular lead-carbon battery. The negative electrode plate material is prepared by mixing the following raw materials in parts by weight: 100 parts of lead powder, 8-14 parts of sulfuric acid, 0.7-1.8 parts of barium sulfate, 0.5-10 parts of nano capacitance carbon, 0.1-1 part of nano conductive carbon fibers, 0.5-5 parts of graphene, 0.1-5 parts of expanded graphite, 0.1-2 parts of humic acid, 0.1-1 part of polyester fibers, 10-20 parts of water, 0.1-2 parts of lignin and 0.1-1 part of barium stearate. The negative electrode plate material has the technical effects that the conductive carbon fibers dispersed in a negative electrode plate play a role in a conductive framework; the activated carbon is introduced into the negative electrode plate, so that the sulfation phenomenon of the negative electrode plate is suppressed; meanwhile, a super capacitor is formed in the battery, so that the circulating performance of the battery is greatly improved. In a conclusion, the specific energy of the battery is greater than 45Wh/kg, and 80 percent of the DOD can be recycled by over 1400 times under normal temperature.

The invention discloses a negative electrode carbon additive for improving charging acceptance of a lead-carbon battery, which belongs to the technical field of lead-acid battery manufacturing. In numerous biomass materials, the content of nanoscale silicon dioxide in the rice husks is as high as 20%. The rice husk is subjected to alkali treatment to remove most of nanoscale silicon dioxide on thesurface, and carbonization is performed to obtain the rice husk-based porous carbon mainly comprising macropores/mesopores. Macroporous and mesoporous structures of the rice husk-based porous carboncan provide a good ion conductor for an energy storage device, so that the kinetic activity of electrochemical reaction is improved. The rice husk-based porous carbon is uniformly mixed with one or more of activated carbon, carbon black, graphite, expanded graphite, graphene, single-walled carbon nanotubes, multi-walled carbon nanotubes and the like, so that the conductivity of the negative electrode carbon additive is further enhanced. The carbon additive for the negative electrode of the lead-carbon battery can effectively improve the charging acceptance of the lead-carbon battery, inhibit the sulfation phenomenon of the negative electrode of the lead-acid battery in a partial state of charge (PSoC) and prolong the cycle life of the battery in the PSoC.

The invention discloses a preparation method of a carbon-based additive used for a lead-carbon negative electrode, and belongs to the technical field of lead-carbon battery manufacturing. A lead layeron the surface of the carbon-based additive used for the lead-carbon negative electrode prepared through carbon material sensitization, activation and chemical lead plating is uniform and compact indistribution, the hydrogen evolution overpotential of carbon material can be obviously improved, and the hydrogen evolution reaction of the negative electrode of a lead acid battery is inhibited; andthe compatibility of carbon material and lead is promoted, so that a good lead and carbon connecting structure is constructed. The high rate part state-of-charge (HRPSoC) simulation test charge-discharge cycles of the lead acid battery with the negative electrode containing the carbon-based additive used for the lead-carbon negative electrode can reach 10555 circles, and is 11 times of that of a contrast lead acid battery. According to the preparation method, sulfation of the negative electrode of the part state-of-charge (PSoC) can be inhibited obviously, and the cycle life of the lead acid battery is prolonged.

A new type of battery electrode plate preparation method is described. The method can include the following steps: a) a mixing process; b) a milling and polishing process; c) an extrusion shearing and extending process; d) cutting to obtain an electrode membrane; and e) pressing at a high temperature and a high pressure to obtain a battery electrode plate. The method can adopt the active material of different electrochemical batteries as the main body to prepare a thick type battery electrode plate with a high conductivity, a high capacity and a high active material loading, which has a viscoelastic body. The electrode plate can have a flexible organic network structure and an excellent mechanical strength, and can still exist in a variety of electrolytes after hundreds of times or even thousands of times of deep charge and discharge cycles. The thick electrode plate prepared by using the method can be applied to a variety of batteries such as lead-acid battery positive and negative electrode plates, a lead carbon battery electrode plate, a lithium ion battery electrode plate, a supercapacitor electrode plate, a Ni-MH battery electrode plate, and others.

The object of the present invention is to provide a class of novel highly conductive doped oxides and their use as an electrode plate additive for batteries. With tungsten oxide or molybdenum oxide as the precursor, the controllable metal doping leads to the formation of highly conductive oxide materials with high hydrogen evolution and high oxygen evolution potential, and can be stable in the sulfuric acid solution. This material can be used as additive materials for the battery positive and negative electrodes and can effectively reduce the electrode internal resistance, improve the utilization efficiency of active materials, increase charge and discharge rate performance, stabilize the electrode structure and improve cycling life.

The invention discloses a green low-temperature denitration catalyst and a preparation method thereof. The method comprises the following steps: adding ethyl orthosilicate and tetrabutyl titanate to absolute ethyl alcohol to obtain a solution A; mixing deionized water, absolute ethyl alcohol, 98% by mass concentration of sulfuric acid, CTAB and 85wt% by mass concentration of phosphoric acid to obtain a solution B; pouring the solution A into the solution B to obtain uniform sol; drying; roasting; grinding; screening to obtain PO43-SO42-/SiO2-TiO2; dissolving 1,3-propane suhone into acetone toobtain a solution C; dropwise adding N-methylimidazole to obtain a primary white product; performing pressure-reduced suction filtration, washing and drying to obtain 1-(3-sulfonyl)-methyl-3-methylimidazole; dissolving phosphotungstic acid in distilled water; then adding ferric nitrate, 1-(3-sulfonyl)-methyl-3-methylimidazole and PO43-SO42-/SiO2-TiO2 to obtain a solution E; and performing pressure-reduced distilling and drying to obtain the green low-temperature denitration catalyst in which PO43-SO42-/SiO2-TiO2 is used as a carrier, and Fe0.33[MIMPS]2PW12O40 or Fe0.66[MIMPS]2PW12O40 is used as an active component. The catalyst is high in specific area, and high in catalyzing activity and SO2 poisoning resistance within the temperature of 100-300 DEG C.

The invention discloses low-temperature-resisting storage battery electrolyte and a preparation method thereof and belongs to the technical field of manufacturing of storage batteries. The storage battery electrolyte is prepared from the following components in percentage by mass: 60 to 65 percent of water, 30 to 35 percent of sulfuric acid, 0.1 to 0.5 percent of tannin, 0.05 to 0.3 percent of magnesium lignosulphonate, 0.02 to 0.1 percent of lithium sulfite, 0.02 to 0.1 percent of stannous sulfate, 3 to 10 percent of polyepoxysuccinic acid or sodium polyepoxysuccinate and 0.05 to 0.3 percentof hydroxymethyl cellulose. According to the electrolyte disclosed by the invention, a polar plate sulfated new component, i.e., polyepoxysuccinic acid or sodium polyepoxysuccinate, is added into theelectrolyte to alleviate the utilization invalidation of lignin components in a negative electrode additive, so that the service life of a storage battery is prolonged; meanwhile, the low-temperatureperformance of the storage battery is increased; the special tannin for the storage battery is added into the storage battery in an another way, so that the low-temperature performance of the storagebattery is improved; magnesium lignosulphonate and metal salt components are added to avoid short circuit of storage battery dendritic crystal and prevent a polar plate from being sulfated.

The invention provides a carbon material in-situ deposited nanometer lead crystal grain/lead oxide composite material and a preparation method thereof. A final product is obtained through processes of mixing, chemical precipitation, solid-liquid separation, washing and drying and high-temperature sintering and the like with the carbon materials and soluble lead salts serving as raw materials. Themethod is simple in process, convenient to operate and low in production cost, is conducive to realizing large-scale production and is convenient for popularization and application; and the product prepared through the method has the advantages of high conductivity, high hydrogen evolution overpotential, high capacitance and excellent electrochemical performance and the like. The method can be widely applied to electrochemical power sources of lead-carbon batteries, lithium-ion batteries and supercapacitors and the like.