CN109148844B - Lead-acid storage battery negative electrode lead paste suitable for being used in ultralow temperature environment and preparation method - Google Patents
Lead-acid storage battery negative electrode lead paste suitable for being used in ultralow temperature environment and preparation method Download PDFInfo
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- CN109148844B CN109148844B CN201810886918.9A CN201810886918A CN109148844B CN 109148844 B CN109148844 B CN 109148844B CN 201810886918 A CN201810886918 A CN 201810886918A CN 109148844 B CN109148844 B CN 109148844B
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- 239000002253 acid Substances 0.000 title claims abstract description 37
- 238000003860 storage Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 60
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000011505 plaster Substances 0.000 claims abstract description 25
- 239000000835 fiber Substances 0.000 claims abstract description 21
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000006230 acetylene black Substances 0.000 claims abstract description 15
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229920001732 Lignosulfonate Polymers 0.000 claims abstract description 14
- 239000004021 humic acid Substances 0.000 claims abstract description 14
- 239000004094 surface-active agent Substances 0.000 claims abstract description 14
- 239000004117 Lignosulphonate Substances 0.000 claims abstract description 8
- 235000019357 lignosulphonate Nutrition 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 12
- 229920001864 tannin Polymers 0.000 claims description 11
- 235000018553 tannin Nutrition 0.000 claims description 11
- 239000001648 tannin Substances 0.000 claims description 11
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 229920000728 polyester Polymers 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 230000035515 penetration Effects 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 238000007580 dry-mixing Methods 0.000 claims description 4
- 239000011149 active material Substances 0.000 abstract description 2
- 241000872198 Serjania polyphylla Species 0.000 description 3
- 239000013543 active substance Substances 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 229920005552 sodium lignosulfonate Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/56—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of lead
- H01M4/57—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of lead of "grey lead", i.e. powders containing lead and lead oxide
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Composite Materials (AREA)
- Inorganic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a lead-acid storage battery negative electrode lead paste suitable for being used in an ultralow temperature environment and a preparation method thereof. Belongs to the technical field of lead-acid storage batteries. The method mainly solves the problem that the existing large-size batteries (such as 120Ah products) can not meet the requirement of a data acquisition instrument on a specified continuous working period at the ultralow temperature of-40 ℃ in the field. It is mainly characterized in that: the negative lead plaster formula comprises: 81.3% -83.5% of lead powder; 0.10% -0.15% of lignosulphonate; short fiber 0.05-0.08%; 0.06% -0.07% of barium sulfate; 0.40 to 0.45 percent of humic acid; 0.17 to 0.19 percent of acetylene black; 0.25 to 0.40 percent of surfactant; 7.0 to 8.0 percent of dilute sulfuric acid; 8.5 to 9.5 percent of pure water. The invention improves the interface structure between the grid and the active material, improves the heavy current discharge performance of the large-size battery under the ultralow temperature environment, and is mainly used for the lead-acid battery cathode lead plaster used under the ultralow temperature environment and used for vehicle starting.
Description
Technical Field
The invention belongs to the technical field of lead-acid storage batteries, and particularly relates to negative lead plaster applicable to a lead-acid storage battery product used in an ultralow temperature environment and a preparation method thereof.
Background
The conventional negative pole lead paste formula is mainly applied to small batteries, and has the problems of good low-temperature performance, poor discharge performance and capacity performance of large batteries (such as 120Ah products) and vehicle-started lead-acid storage batteries at ultralow temperature (such as-40 ℃) in the field, incapability of meeting the requirement of a data acquisition instrument on a specified continuous working period, incapability of meeting the GJB516B standard and the like.
The name is' lead capable of being recycled in low-temperature environmentThe application of the Chinese invention patent application of acid storage battery cathode lead plaster and the preparation method thereof (CN 105789618A)' mainly applies to the field of valve-controlled energy storage batteries, and specifically uses carbon black with high specific surface area (the specific surface area is more than or equal to 14 m)2The/g) replaces the traditional acetylene black or colloidal graphite, and simultaneously uses the superfine barium sulfate and optimizes the using amount of the sodium lignosulfonate in the formula, thereby improving the capacity of the battery at low temperature (-20 ℃) and prolonging the cycle service life. The aim of improving the low-temperature performance of the battery is achieved by mainly using carbon black with large specific surface area and superfine barium sulfate and optimizing a lignin formula.
Disclosure of Invention
The invention aims to provide a negative pole lead paste suitable for a lead-acid storage battery product used in an ultralow temperature environment and a preparation method thereof, and solves the problems that large-size batteries (such as 120Ah products) and vehicle-started lead-acid storage batteries have poor discharge performance and capacity performance at ultralow temperature (such as-40 ℃) in the field and cannot meet the requirement of a data acquisition instrument on a specified continuous working period, so that the negative pole lead paste can meet the GJB516B standard.
The technical scheme of the negative lead plaster of the invention is as follows: the lead-acid storage battery negative electrode lead plaster suitable for being used in the ultralow temperature environment is characterized by comprising the following components in percentage by mass:
81.3% -83.5% of lead powder;
0.10% -0.15% of lignosulphonate;
short fiber 0.05-0.08%;
0.06% -0.07% of barium sulfate;
0.40 to 0.45 percent of humic acid;
0.17 to 0.19 percent of acetylene black;
0.25 to 0.40 percent of surfactant;
7.0 to 8.0 percent of dilute sulfuric acid;
8.5% -9.5% of pure water;
mixing the paste: dry mixing for 2-5min, wet mixing for 1-3 min, adding acid for 10-16min, and final mixing for 2-5 min.
The preferred technical scheme of the negative pole lead paste is as follows: the lead-acid storage battery negative electrode lead plaster suitable for being used in the ultralow temperature environment is characterized by comprising the following components in percentage by mass:
82.1% -82.9% of lead powder;
0.12% -0.14% of lignosulphonate;
short fiber 0.06-0.07%;
0.06% -0.07% of barium sulfate;
0.41 to 0.44 percent of humic acid;
0.18 to 0.19 percent of acetylene black;
0.31% -0.38% of surfactant;
7.2 to 7.8 percent of dilute sulfuric acid;
8.8% -9.2% of pure water;
mixing the paste: dry mixing for 2-4min, wet mixing for 2-3 min, adding acid for 13-14 min, and final mixing for 2-4 min.
The optimal technical solution of the negative lead plaster of the invention is as follows: the lead-acid storage battery negative electrode lead plaster suitable for being used in the ultralow temperature environment is characterized by comprising the following components in percentage by mass:
100kg of lead powder;
0.1kg of lignosulphonate;
0.1kg of short fibers;
0.9kg of barium sulfate;
0.5kg of humic acid;
0.3kg of acetylene black;
0.4kg of surfactant;
10kg of dilute sulfuric acid;
11kg of pure water;
mixing the paste: dry mixing for 120s, wet mixing for 120s, adding acid for 13min and final mixing for 3 min.
The concentration of the dilute sulfuric acid in the technical scheme of the negative electrode lead paste is 40-50%.
The technical scheme of the negative pole diachylon of the invention is that the surfactant is an acorn tannin extract, which is a specific natural tannin extract substance.
The technical scheme of the negative pole lead plaster of the invention is that the short fiber is nano-polyester, the length is 2-5 mm, and the diameter is 5-13 nm.
The technical scheme of the cathode lead plaster of the invention is that the barium sulfate is nano-scale barium sulfate with the particle size of 12-18 nm.
The degree of oxidation of the lead powder in the technical solution of the negative electrode lead paste of the present invention is 70-80%, and the specific surface area is 8000-.
The technical scheme of the preparation method of the cathode lead plaster comprises the following steps: a method for preparing a negative lead plaster of a lead-acid storage battery suitable for being used in an ultralow temperature environment is characterized by comprising the following steps:
(a) weighing lead powder, barium sulfate, short fiber, humic acid, lignosulfonate and acetylene black with corresponding mass according to the component ratio, and mechanically premixing for 2-5 min;
(b) adding the premixed components, a surfactant and pure water into a paste mixer, and quickly stirring for 1-3 min;
(c) slowly adding dilute sulfuric acid into the system, controlling the temperature of the system between 30 and 15 ℃ in the acid adding process, and continuously stirring for 10 to 16min in the whole process;
(d) stirring the above system for 2-5min, and fine-adjusting the apparent density of the lead paste to 4.35-4.55g/cm with trace deionized water3The penetration degree is 18-22 mm;
(e) the lead plaster is coated on a negative grid plate, and when the plate is dried and cured, a low-temperature high-humidity curing process is adopted, wherein the curing time is 25-50 h, the drying temperature is 40 ℃, the relative humidity is 85-95%, the drying time is 30-40 h, and the drying temperature is 60-70 ℃.
The concentration of the dilute sulfuric acid in the technical scheme of the preparation method of the cathode lead paste is 40-50%; the surfactant is an oak cup tannin extract; the short fiber is nano-polyester, the length is 2-5 mm, and the diameter is 5-13 nm; the barium sulfate is nano-scale barium sulfate with the particle size of 12-18 nm; the degree of oxidation of the lead powder is 70-80%, and the specific surface area is 8000-.
The invention has the beneficial effects that: by adding a surfactant, the interface structure of the negative grid and the active material is improved, so that a good electronic exchange interface oxide film is formed, sulfate deposition is delayed, capacity loss is reduced, and the electron transfer efficiency is improved. Meanwhile, the additive has the functions of agglomeration and adsorption, and can improve the interface structure between active substances and improve the binding force between the active substances. On the basis of the existing lead plaster formula, the interface structure between the grid and the active substance is improved, so that the large-size battery has high-current discharge performance in an ultralow-temperature environment.
The invention is mainly used for the lead-acid battery cathode lead plaster used in the ultra-low temperature environment and for vehicle starting.
Detailed Description
The following detailed description of specific embodiments of the invention.
The negative lead plaster for the lead-acid storage battery suitable for being used in the ultralow temperature environment comprises the following components in percentage by mass:
81.3% -83.5% of lead powder;
0.10% -0.15% of lignosulphonate;
short fiber 0.05-0.08%;
0.06% -0.07% of barium sulfate;
0.40 to 0.45 percent of humic acid;
0.17 to 0.19 percent of acetylene black;
0.25 to 0.40 percent of oak cup tannin extract;
7.0 to 8.0 percent of dilute sulfuric acid;
8.5% -9.5% of pure water;
the concentration of the dilute sulfuric acid is 40-50%; the short fiber is nano-polyester, the length is 2-5 mm, and the diameter is 5-13 nm; the barium sulfate is nano-scale barium sulfate with the particle size of 12-18 nm; the degree of oxidation of the lead powder is 70-80%, and the specific surface area is 8000-;
the preparation method comprises the following steps:
(a) weighing lead powder, barium sulfate, short fiber, humic acid, lignosulfonate and acetylene black according to the component ratio, and mechanically premixing for 2-5 min;
(b) adding the premixed components, a surfactant and pure water into a paste mixer, and quickly stirring for 1-3 min;
(c) slowly adding dilute sulfuric acid into the system, controlling the temperature of the system between 30 and 45 ℃ in the acid adding process, and continuously stirring for 10 to 13min in the whole process;
(d) stirring the above system for 2-5min, and fine-adjusting the apparent density of the lead paste to 4.35-4.55g/cm with trace deionized water3The penetration degree is 18-22 mm;
(e) the lead plaster is coated on a negative grid plate, and when the plate is dried and cured, a low-temperature high-humidity curing process is adopted, wherein the curing time is 25-50 h, the drying temperature is 40 ℃, the relative humidity is 85-95%, the drying time is 30-40 h, and the drying temperature is 60-70 ℃.
The lead-acid storage battery negative electrode lead plaster suitable for being used in the ultralow temperature environment comprises the following components in percentage by mass:
82.1% -82.9% of lead powder;
0.12% -0.14% of lignosulphonate;
short fiber 0.06-0.07%;
0.06% -0.07% of barium sulfate;
0.41 to 0.44 percent of humic acid;
0.18 to 0.19 percent of acetylene black;
0.31% -0.38% of oak extract;
7.2 to 7.8 percent of dilute sulfuric acid;
8.8% -9.2% of pure water;
the concentration of the dilute sulfuric acid is 40-50%; the short fiber is nano-polyester, the length is 2-5 mm, and the diameter is 5-13 nm; the barium sulfate is nano-scale barium sulfate with the particle size of 12-18 nm; the degree of oxidation of the lead powder is 70-80%, and the specific surface area is 8000-;
the preparation method comprises the following steps:
(a) weighing lead powder, barium sulfate, short fiber, humic acid, lignosulfonate and acetylene black according to the component ratio, and mechanically premixing for 2-4 min;
(b) adding the premixed components, a surfactant and pure water into a paste mixer, and quickly stirring for 2-3 min;
(c) slowly adding dilute sulfuric acid into the system, controlling the temperature of the system between 30 and 45 ℃ in the acid adding process, and continuously stirring for 13 to 14min in the whole process;
(d) stirring the above system for 2-5min, and fine-adjusting the apparent density of the lead paste to 4.35-4.55g/cm with trace deionized water3The penetration degree is 18-22 mm;
(e) the lead plaster is coated on a negative grid plate, and when the plate is dried and cured, a low-temperature high-humidity curing process is adopted, wherein the curing time is 25-50 h, the drying temperature is 40 ℃, the relative humidity is 85-95%, the drying time is 30-40 h, and the drying temperature is 60-70 ℃.
Example 1: the lead-acid storage battery negative electrode lead plaster suitable for being used in the ultralow temperature environment comprises the following components in percentage by mass:
100kg of lead powder;
0.1kg of lignosulphonate;
0.1kg of short fibers;
0.9kg of barium sulfate;
0.5kg of humic acid;
0.3kg of acetylene black;
0.4kg of oak cup tannin extract;
10kg of dilute sulfuric acid;
11kg of pure water;
the concentration of the dilute sulfuric acid is 40-50%; the short fiber is nano-polyester, the length is 2-5 mm, and the diameter is 5-13 nm; the barium sulfate is nano-scale barium sulfate with the particle size of 12-18 nm; the degree of oxidation of the lead powder is 70-80%, and the specific surface area is 8000-;
the preparation method comprises the following steps:
(a) weighing lead powder, barium sulfate, short fibers, humic acid, lignosulfonate and acetylene black according to the component ratio, and mechanically premixing for 120 s;
(b) adding the premixed components, a surfactant and pure water into a paste mixer, and quickly stirring for 2 min;
(c) slowly adding dilute sulfuric acid into the system, controlling the system temperature between 30-15 ℃ in the acid adding process, and continuously stirring for 13min in the whole process;
(d) stirring the above system for 3min, and fine-adjusting the apparent density of the lead paste to 4.35-4.55g/cm with trace amount of deionized water3The penetration degree is 18-22 mm;
(e) the lead plaster is coated on a negative grid plate, and when the plate is dried and cured, a low-temperature high-humidity curing process is adopted, wherein the curing time is 25-50 h, the drying temperature is 40 ℃, the relative humidity is 85-95%, the drying time is 30-40 h, and the drying temperature is 60-70 ℃.
Example 1 the final apparent density was 4.43g/ml, which in combination with a conventional positive plate, achieved the following practical effects for starting the cell:
the invention has the following obvious characteristics by verification of comparative experiments:
1) the invention can completely meet the technical index requirements of the bidding party, and the product has better product characteristics than competitors through the actual field application of the bidding party;
2) under the condition of specified discharge current, the termination voltage of the product with the same structure is obviously higher than that of the existing sample;
3) the product of the invention completely meets the requirements of the newly revised GJB516C-XXXX standard at the structure with the lowest material consumption (9 +/9-).
Claims (8)
1. The application of the lead-acid storage battery negative lead plaster in the ultralow temperature environment is-40 ℃, and is characterized in that the lead-acid storage battery negative lead plaster comprises the following components in percentage by mass:
100kg of lead powder;
0.1kg of lignosulphonate;
0.1kg of short fibers;
0.9kg of barium sulfate;
0.5kg of humic acid;
0.3kg of acetylene black;
0.4kg of surface active agent is added,
the surfactant is an oak cup tannin extract;
10kg of dilute sulfuric acid;
11kg of pure water;
mixing the paste: dry mixing lead powder, barium sulfate, short fiber, humic acid, lignosulfonate and acetylene black for 2-5min, wet mixing the premixed components with surfactant and pure water for 1-3 min, adding acid for 10-16min, and final mixing for 2-5 min.
2. The application of the negative lead paste of the lead-acid storage battery in the ultralow temperature environment according to claim 1 is characterized in that: the concentration of the dilute sulfuric acid is 40-50%.
3. The application of the negative lead paste of the lead-acid storage battery in the ultralow temperature environment according to claim 1 is characterized in that: the oak cup tannin extract is natural tannin extract.
4. The application of the negative lead paste of the lead-acid storage battery in the ultralow temperature environment according to claim 1 is characterized in that: the short fiber is nano-polyester, the length is 2-5 mm, and the diameter is 5-13 nm.
5. The application of the negative lead paste of the lead-acid storage battery in the ultralow temperature environment according to claim 1 is characterized in that: the barium sulfate is nano-scale barium sulfate with the particle size of 12-18 nm.
6. The application of the negative lead paste of the lead-acid storage battery in the ultralow temperature environment according to claim 1 is characterized in that: the degree of oxidation of the lead powder is 70-80%, and the specific surface area is 8000-.
7. The application of the negative lead paste of the lead-acid storage battery in the ultralow temperature environment according to claim 1, wherein the preparation method of the negative lead paste comprises the following steps:
(a) weighing lead powder, barium sulfate, short fiber, humic acid, lignosulfonate and acetylene black in corresponding mass according to the component ratio, and mechanically premixing for 2-5 min;
(b) adding the premixed components, the oak cup tannin extract and the pure water into a paste mixer, and quickly stirring for 1-3 min;
(c) slowly adding dilute sulfuric acid into the system, controlling the temperature of the system between 30 and 45 ℃ in the acid adding process, and continuously stirring for 10 to 16min in the whole process;
(d) stirring the above system for 2-5min, and fine-adjusting the apparent density of the lead paste to 4.35-4.55g/cm with trace deionized water3The penetration degree is 18-22 mm;
(e) the lead plaster is coated on a negative grid plate, and when the plate is dried and cured, a low-temperature high-humidity curing process is adopted, wherein the curing time is 25-50 h, the drying temperature is 40 ℃, the relative humidity is 85-95%, the drying time is 30-40 h, and the drying temperature is 60-70 ℃.
8. The application of the negative lead paste of the lead-acid storage battery in the ultralow temperature environment according to claim 7 is characterized in that: the concentration of the dilute sulfuric acid is 40-50%; the oak cup tannin extract is natural tannin extract; the short fiber is nano-polyester, the length is 2-5 mm, and the diameter is 5-13 nm; the barium sulfate is nano-scale barium sulfate with the particle size of 12-18 nm; the degree of oxidation of the lead powder is 70-80%, and the specific surface area is 8000-.
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| CN201810886918.9A CN109148844B (en) | 2018-08-06 | 2018-08-06 | Lead-acid storage battery negative electrode lead paste suitable for being used in ultralow temperature environment and preparation method |
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| CN111600018A (en) * | 2019-10-23 | 2020-08-28 | 骆驼集团蓄电池研究院有限公司 | Negative lead paste suitable for high-temperature and low-temperature environments, lead-acid storage battery and preparation method |
| CN112103497B (en) * | 2020-10-22 | 2021-08-03 | 骆驼集团(安徽)再生资源有限公司 | Lead paste for negative plate of lead storage battery and preparation method thereof |
| CN112467089B (en) * | 2020-11-25 | 2022-07-05 | 河北超威电源有限公司 | Method for solidifying and drying accumulator plate and special equipment |
| CN112563460B (en) * | 2020-12-10 | 2023-01-17 | 淄博火炬能源有限责任公司 | Low-temperature power battery and preparation method thereof |
| CN118472263A (en) * | 2024-07-11 | 2024-08-09 | 天能电池集团股份有限公司 | Ultralow-temperature lead storage battery negative electrode lead plaster and preparation method thereof |
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