CN115939397A - Lead-acid storage battery negative electrode lead paste and preparation method thereof - Google Patents
Lead-acid storage battery negative electrode lead paste and preparation method thereof Download PDFInfo
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- CN115939397A CN115939397A CN202211675945.4A CN202211675945A CN115939397A CN 115939397 A CN115939397 A CN 115939397A CN 202211675945 A CN202211675945 A CN 202211675945A CN 115939397 A CN115939397 A CN 115939397A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The invention belongs to the technical field of new energy batteries, and particularly relates to a lead-acid storage battery negative electrode lead plaster and a preparation method thereof. The composite material is prepared from the following raw materials in percentage by weight: 80-85% of lead powder, 9-12% of sulfuric acid, 0.3-0.5% of lignosulfonate, 0.02-0.06% of stannous sulfate, 0.9-1.5% of barium sulfate, 0.2-0.3% of carbon and the balance of deionized water. The lead-acid storage battery negative lead plaster is added with carbon, the carbon can be incorporated into the branches of the main skeleton of the negative lead crystal or adsorbed on the surface of the lead phase, and during the formation of the polar plate, lead nuclei can be generated on the surfaces of the activated carbon particles and can grow into new branches, so that a lead-carbon active substance is formed, and the electrical property of the negative plate is greatly improved.
Description
Technical Field
The invention belongs to the technical field of new energy batteries, and particularly relates to a lead-acid storage battery negative electrode lead plaster and a preparation method thereof.
Background
In order to protect the environment, the current nation supports the new energy power automobile greatly, and the new energy automobile is increasing. The low-speed lead-acid storage battery meets the requirement of rapid development of the automobile industry due to the characteristics of low material price, continuous innovation of process technology, low self-discharge, less maintenance workload and the like, and continuous aging of manufacturing process equipment, and addition of technologies of net punching and continuous casting of grid. The technical progress of the lead-acid storage battery in the field of new energy automobiles makes a real contribution to improving the national competitiveness and makes a contribution to reducing the pollution of fuel automobiles and fuel motorcycles. The demand for small mobile power sources in the industries such as electric tools and electric bicycles has stimulated rapid growth in the power battery industry.
In the future, the storage battery products for the electric moped will be developed vigorously for a long time. And more than 95% of power batteries of electric bicycles, electric tricycles and four-wheel vehicles in China adopt lead-acid storage batteries, which is a huge market.
Most of batteries configured for low-speed electric vehicles are valve-controlled sealed lead-acid storage batteries, and have breakthrough in the aspects of specific energy and cycle life through performance improvement, but the low-speed electric vehicles have the defects of low specific energy at medium and high speed, short deep cycle life, low capacity retention rate and the like so far, and the high-speed growth of the electric vehicle industry is influenced to a great extent. The invention discloses an invention patent application with application publication number CN105140474A, and discloses a negative electrode lead paste of a power lead-acid storage battery, which comprises the following components in parts by mass: 1000 parts of lead powder, 90-110 parts of deionized water, 70-100 parts of 50% sulfuric acid solution by mass, 0.6-0.9 part of synthetic fiber, 10-30 parts of barium sulfate, 0.5-3 parts of lignin, 0.5-2 parts of stannous sulfate, 0.5-3 parts of sodium lignosulfonate and 5-20 parts of polyaniline. The invention can effectively improve the low-temperature performance of the power lead-acid storage battery and solve the problem of short cycle life of the power lead-acid storage battery in a low-temperature state. The polyaniline used in the method can be doped to conduct electricity, but the polyaniline is doped into a lead substance under certain conditions, so that the conductivity is not mature.
Disclosure of Invention
The invention provides a lead-acid storage battery cathode lead paste and a preparation method thereof, aiming at prolonging the cycle life, discharging with large current, capacity at low temperature of-18 ℃ and initial capacity of a lead-acid battery. The lead-acid storage battery negative electrode lead plaster is added with carbon, so that the electrical property of a negative electrode plate is greatly improved, the charge acceptance of the lead-acid storage battery can be obviously improved, and the sulfation condition of a high-rate discharge cycle negative electrode active substance is prevented.
The invention is realized by the following technical scheme:
the invention relates to a lead-acid storage battery cathode lead plaster, which adds carbon into a cathode active substance. The lead-acid storage battery cathode lead plaster is prepared from the following raw materials in percentage by weight: 80-85% of lead powder, 9-12% of sulfuric acid, 0.3-0.5% of lignosulfonate, 0.02-0.06% of stannous sulfate, 0.9-1.5% of barium sulfate, 0.2-0.3% of carbon and the balance of deionized water; wherein the carbon is a TDA type carbon.
TDA type carbon: is a carbon polymer that is distinguished from other carbon particle sizes. The carbon material is mainly characterized in that the grain diameter of the carbon material is less than or equal to 44 mu m, and the BET (specific surface area test method) specific surface area is 1615m 2 /g。
In a further preferred scheme, the lead-acid storage battery negative electrode lead paste is prepared from the following raw materials: 83% of lead powder, 10% of sulfuric acid, 0.4% of lignosulfonate, 0.05% of stannous sulfate, 1% of barium sulfate, 0.25% of carbon and the balance of deionized water.
The preparation method of the lead-acid storage battery negative electrode lead paste comprises the following steps:
uniformly stirring and mixing lead powder, sulfuric acid, lignosulfonate, stannous sulfate, barium sulfate, carbon and deionized water to obtain the lead-acid storage battery cathode lead plaster, wherein the sum of the weight percentages of the raw materials is 100%, and the apparent density of the lead plaster measured after stirring is 4.43-4.32 g/cm 3 。
The invention has the beneficial effects that:
the lead-acid storage battery negative lead plaster is added with carbon, the carbon can be incorporated into the branches of the main skeleton of the negative lead crystal or adsorbed on the surface of the lead phase, and during the formation of the polar plate, lead nuclei can be generated on the surfaces of the activated carbon particles and can grow into new branches, so that a lead-carbon active substance is formed, and the electrical property of the negative plate is greatly improved.
The negative active material can obviously improve the charge acceptance of the lead-acid storage battery, prevent the sulfation of the negative active material in high-rate discharge cycle, and obviously improve the initial capacity, large-current discharge and cycle performance of the lead-acid storage battery.
Detailed Description
The present invention will be described in more detail with reference to the following embodiments for understanding the technical solutions of the present invention, but the present invention is not limited to the scope of the present invention.
Example 1
The negative electrode lead paste of the lead-acid storage battery is prepared from the following raw materials in percentage by weight: 83 percent of lead powder, 10 percent of sulfuric acid, 0.4 percent of lignosulfonate, 0.05 percent of stannous sulfate, 1 percent of barium sulfate, 0.25 percent of carbon and the balance of deionized water, wherein the sum of the weight percentages of the raw materials is 100 percent.
The raw materials are stirred and mixed evenly to obtain the lead-acid storage battery cathode lead plaster, and the apparent density of the lead plaster is measured to be 4.32g/cm after the stirring is finished 3 。
Comparative example 1
The negative electrode lead paste of the conventional lead-acid storage battery is prepared from the following raw materials in percentage by mass: 83% of lead powder, 10% of sulfuric acid, 0.4% of lignosulphonate, 0.05% of stannous sulfate, 1% of barium sulfate, 0.05% of acetylene black and the balance of deionized water, wherein the sum of the weight percentage of the raw materials is 100%. The raw materials are stirred and mixed evenly to obtain the cathode lead plaster 1 of the conventional lead-acid storage battery.
Comparative example 2
The conventional lead-acid battery negative electrode lead paste of the embodiment 2 is prepared from the following raw materials in percentage by mass: 83% of lead powder, 6% of sulfuric acid, 0.17% of lignosulfonate, 1.0% of barium sulfate, 0.03% of short fiber and 10.0% of deionized water. And (3) uniformly stirring and mixing the raw materials to obtain the cathode lead plaster 2 of the conventional lead-acid storage battery.
Comparative example 3
The negative electrode lead paste of the conventional lead-acid storage battery is prepared from the following raw materials in percentage by mass: 84% of lead powder, 9% of sulfuric acid, 0.3% of lignosulfonate, 0.04% of stannous sulfate, 1% of barium sulfate, 0.04% of acetylene black and the balance of deionized water, wherein the sum of the weight percentages of the raw materials is 100%. And (3) uniformly stirring and mixing the raw materials to obtain the cathode lead plaster 3 of the conventional lead-acid storage battery.
Comparative example 4
The negative electrode lead paste of the conventional lead-acid storage battery is prepared from the following raw materials in percentage by mass: 82% of lead powder, 8% of sulfuric acid, 0.25% of lignosulfonate, 0.035% of stannous sulfate, 1% of barium sulfate, 0.03% of acetylene black and the balance of deionized water, wherein the sum of the weight percentages of the raw materials is 100%. And (3) uniformly stirring and mixing the raw materials to obtain the cathode lead plaster 4 of the conventional lead-acid storage battery.
Lead-acid batteries were respectively prepared using the lead pastes of example 1 and comparative example 1, and the performance of the obtained lead-acid batteries was measured as in table 1 below.
TABLE 1 Performance of lead-acid batteries prepared with different negative lead pastes
Lead-acid batteries were prepared using the lead pastes of example 1 and comparative example 2, respectively, and the performance of the obtained lead-acid batteries was measured as in table 2 below.
TABLE 2 Performance of lead-acid batteries prepared with different negative electrode lead pastes
Lead-acid batteries were respectively prepared from the lead pastes of example 1 and comparative example 3, and the performance of the obtained lead-acid batteries was tested as shown in table 3 below.
TABLE 3 Performance of lead-acid batteries prepared with different negative lead pastes
Lead-acid batteries were prepared using the lead pastes of example 1 and comparative example 4, respectively, and the performance of the obtained lead-acid batteries was measured as shown in table 4 below.
TABLE 4 Performance of lead-acid batteries prepared with different negative lead pastes
As can be seen from tables 1 to 4, the main electrical properties of the lead-acid batteries prepared from the negative electrode lead paste containing carbon according to the present invention were significantly improved, as compared to the lead-acid batteries prepared from the negative electrode lead pastes of comparative examples 1, 2, 3, and 4.
The above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the invention, so that equivalent changes or modifications in the structure, features and principles described in the present invention should be included in the claims of the present invention.
Claims (5)
1. The lead-acid storage battery negative electrode lead paste is characterized by being prepared from the following raw materials in percentage by weight: 80 to 85 percent of lead powder, 9 to 12 percent of sulfuric acid, 0.3 to 0.5 percent of lignosulfonate, 0.02 to 0.06 percent of stannous sulfate, 0.9 to 1.5 percent of barium sulfate, 0.2 to 0.3 percent of carbon, and the balance of deionized water.
2. The negative electrode lead paste of a lead-acid storage battery according to claim 1, wherein the carbon is TDA type carbon, the particle size is less than or equal to 44 μm, and the BET specific surface area is 1615m 2 /g。
3. The lead-acid battery negative electrode lead paste according to claim 1, characterized in that the lead-acid battery negative electrode lead paste is prepared from the following raw materials in percentage by weight: 83% of lead powder, 10% of sulfuric acid, 0.4% of lignosulfonate, 0.05% of stannous sulfate, 1% of barium sulfate, 0.25% of carbon and the balance of deionized water.
4. The preparation method of the lead-acid storage battery negative electrode lead paste, which is characterized by comprising the following steps:
the lead powder, sulfuric acid, lignosulfonate, stannous sulfate, barium sulfate, carbon and deionized water are uniformly stirred and mixed to obtain the lead-acid storage battery cathode lead plaster.
5. The preparation method of the lead-acid storage battery negative electrode lead plaster according to claim 4, characterized in that the apparent density of the lead-acid storage battery negative electrode lead plaster obtained by stirring is 4.43-4.32 g/cm 3 。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211675945.4A CN115939397A (en) | 2022-12-26 | 2022-12-26 | Lead-acid storage battery negative electrode lead paste and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211675945.4A CN115939397A (en) | 2022-12-26 | 2022-12-26 | Lead-acid storage battery negative electrode lead paste and preparation method thereof |
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| CN115939397A true CN115939397A (en) | 2023-04-07 |
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