CN104659425A - Method for preparing composite coating negative plate lead-acid storage battery - Google Patents
Method for preparing composite coating negative plate lead-acid storage battery Download PDFInfo
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- CN104659425A CN104659425A CN201310607818.5A CN201310607818A CN104659425A CN 104659425 A CN104659425 A CN 104659425A CN 201310607818 A CN201310607818 A CN 201310607818A CN 104659425 A CN104659425 A CN 104659425A
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- negative plate
- composite coating
- paste
- lead acid
- acid accumulator
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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
- 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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention relates to a method for preparing a composite coating negative plate lead-acid storage battery. According to the method, a positive plate and a negative plate are isolated by virtue of a separator, and composite coatings are arranged on two sides of the negative plate. The composite coating is prepared by the following steps: (1) preparing a paste composite material from a powdered mixture; (2) coating the paste composite material on two sides of the negative plate; and (3) further drying the negative plate until the total weight of the composite coatings is 3.3 percent of the weight of active substances in the negative plate, and cooling. According to the method, powdered mixed carbon is prepared into paste, and a paste composite material is manufactured and is arranged on two surfaces of the negative plate to form high-conductivity composite coatings on the two surfaces of the negative plate, so that the reaction pathway of converting lead ions into lead metal is increased, the conversion speed of converting lead ions into lead metal is increased, sulfation caused by lead sulfate aggregation is prevented, and environmental pollution caused by material spraying is avoided. The method is simple in process and low in manufacture cost, is environment-friendly, and is easily industrialized.
Description
Technical field
The invention belongs to Lead-acid Battery Technology field, particularly relate to the preparation method of composite coating negative plate lead acid accumulator.
Background technology
Lead-acid battery is widely used in all fields of national economy, has abundant raw materials, cheap, fail safe high.The lead acid accumulator being applied to the fields such as wind-powered electricity generation accumulation power supply, the pulse power, hybrid electric vehicle is in partial state of charge state fast charging and discharging operating state.
Lead acid accumulator is in fast discharge process, reversible process and irreversible process is there is: the plumbum ion concentration in active material micropore is high in the dissolving of lead sulfate and forming process, because little lead sulfate crystal is soluble, therefore, this process is a reversible process; And part lead ion enters in large lead sulfate particle, large lead sulfate particle is not soluble and be reduced into lead, and this is an irreversible process.The ratio of two kinds of process reactions determines the cycle-index of battery under partial state of charge state fast charging and discharging state.
Current known lead acid accumulator, under partial state of charge state high magnification operating state, due to the charge acceptance problem of negative plate, lead ion is that plumbous speed is comparatively slow at plumbous surface reduction, causes the gathering of lead sulfate, thus define large lead sulfate particle, this large lead sulfate particle is not easily converted into lead ion, loses electro-chemical activity, causes the sulfation of pole plate, limit the cycle life of battery, finally cause the inefficacy of battery.
Find that application number is 200910221354.8 through retrieval, publication number is CN101710627A, name is called: the patent of invention of negative plate capacitive character lead acid accumulator, a kind of negative plate capacitive character lead acid accumulator is disclosed in its specification, comprise spaced apart positive plate and negative plate, one deck porous carbon compound that sprayed active material surface on described negative plate sandblasts layer, this porous carbon compound layer that sandblasts is: porous carbon materials 45-75%, carboxymethyl cellulose 5-15%, acetylene black 5-15%, graphite 6-15%, the mixture of polytetrafluoroethylene 6-18% is made graininess and to be sprayed behind moistening positive and negative pole active matter surface drying again, solidification is made.The present invention is based on the principle of ultracapacitor interfacial electrochemistry electric double layer, negative plate introduces the porous carbon materials with electrochemical double-layer energy storage characteristic, electrochemical double-layer storing energy can be formed on electrolyte/electrode material two-phase interface, negative plate is made to have the performance of super capacitor, battery is made to have the feature of capacitance energy storage concurrently with this, possessed high-specific-power simultaneously, can the characteristic of rapid large-current discharge and recharge, its weak point is that operating equipment cost is higher, operating process is complicated, and adopt and spray the problem that technique exists sprays materials, easily cause environmental pollution, not easily realize in practical operation.
Summary of the invention
The present invention provides one can improve battery specific power, realizes rapid large-current discharge and recharge, extends circulating battery useful life for solving in known technology the technical problem that exists, and technique is simple, cost of manufacture is cheap, environmental protection, be easy to the preparation method of the composite coating negative plate lead acid accumulator realizing industrialization.
The technical solution adopted in the present invention is:
The preparation method of composite coating negative plate lead acid accumulator, comprises and keeping apart with the negative plate of dividing plate by positive plate and positive plate two sides, be characterized in: make composite coating on negative plate two sides; The manufacturing process of described composite coating comprises:
(1) active carbon and conductive black are mixed into powder-mixed carbon, solubilizer stirs into mixing carbon paste body, then adds binding agent and dispersant in mixing carbon paste body, stirs into paste composite material;
(2) paste composite material step (1) made is formed on negative plate two sides, and the drying of paste composite material is become composite coating;
(3) the total weight continuing the composite coating on negative plate two sides to be dried to composite coating accounts for 3.3% of active material weight in negative plate, after cooling, namely completes the manufacturing process of composite coating negative plate lead acid accumulator.
The present invention can also adopt following technical scheme:
The ratio of described active carbon and solvent is 1g active carbon: 4-5mL; The time 10-50min stirred after solubilizer;
Described binding agent is polytetrafluoroethylene, described for dispersant carboxycellulose; The weight ratio of described active carbon, conductive black, binding agent, dispersant is 10-15:8-10:2-3:1; Add binding agent and the thick mixing time of dispersant is 20-40min.
Described drying is dry 1-24 hour in the dry kiln of 40 DEG C-60 DEG C or drying box.
The specific area of described active carbon is greater than 1500m
2the commercialization active carbon powder of/g.
Described conductive black is the one in acetylene black, section's qin carbon, graphite.
Described solvent is water or alcohol.
The advantage that the present invention has and good effect are:
1, the present invention is by after making paste by powder-mixed carbon, carry out the making of paste composite material again, paste composite material is coated in negative plate surface, drying, roll extrusion, negative plate two sides forms the composite coating with high conductivity, both the reaction path that lead ion is converted into lead metal had been added, improve the conversion rate that lead ion is converted into lead metal, lead sulfate is prevented to assemble the sulfation caused, effectively prevent again the environmental pollution because sprays materials causes, and technique is simple, cost of manufacture is cheap, environmental protection, is easy to realize industrialization.
2, the present invention adopts the lead acid accumulator made with composite coating negative plate, there is the operating characteristic of small area analysis energy storage, the normal use under big current shape discharge and recharge state can be ensured, be conducive to energy-storage system safety, stable, long-time running, extend the useful life of lead acid accumulator, the fields such as wind-powered electricity generation energy storage, hybrid electric vehicle can be widely used in.
3, the total weight of composite coating of the present invention accounts for 3.3% of positive and negative pole active matter formula weight, significantly improves the power density of battery, extends the cycle life of battery charge state.
Accompanying drawing explanation
Fig. 1 is flat composite coating negative plate lead acid accumulator side cross sectional views prepared by the present invention;
Fig. 2 is Fig. 1 charging and discharging power density contrast schematic diagram.
In figure: 1-positive plate, 2-dividing plate, 3-negative plate, 4-composite coating.
Embodiment
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
The preparation method of composite coating negative plate lead acid accumulator, comprises and keeping apart with the negative plate of dividing plate by positive plate and positive plate two sides, be characterized in: make composite coating on negative plate two sides; The manufacturing process of described composite coating comprises:
(1) active carbon and conductive black are mixed into powder-mixed carbon, solubilizer stirs into mixing carbon paste body, then adds binding agent and dispersant in mixing carbon paste body, stirs into paste composite material;
(2) paste composite material step (1) made is formed on negative plate two sides, the drying of paste composite material is become composite coating, the paste thickness of composite material of every one side coating is 0.2-0.4mm, again by thick to 0.10-0.3mm for each surface composite material roll-in after the drying of paste composite material;
(3) the total weight continuing the composite coating on negative plate two sides to be dried to composite coating accounts for 3.3% of active material weight in negative plate, after cooling, namely completes the manufacturing process of composite coating negative plate lead acid accumulator.
The ratio of described active carbon and solvent is 1g active carbon: 4-5mL; The time 10-50min stirred after solubilizer;
Described binding agent is polytetrafluoroethylene, described dispersant is carboxycellulose; The weight ratio of described active carbon, conductive black, binding agent, dispersant is 10-15:8-10:2-3:1; Add binding agent and the thick mixing time of dispersant is 20-40min.
Described drying is dry 1-24 hour in the dry kiln of 40 DEG C-60 DEG C or drying box.
The specific area of described active carbon is greater than 1500m
2the commercialization active carbon powder of/g.
Described conductive black is the one in acetylene black, section's qin carbon, graphite.
Described solvent is water or alcohol.
Embodiment:
Step 1: adopt plumbous or containing the calcium of 0.5-2%, the tin of 0.5-2% and 0.01-0.5% aluminium lead alloy to make positive plate 1; Glass mat, polyvinyl chloride (PVC), polyethylene (PE) or polypropylene (PP) make dividing plate 2, and dividing plate is made flat tubbiness, and positive plate is placed in dividing plate;
Step 2: make negative plate
Plumbous or containing the calcium of 0.5-2%, the tin of 0.5-2% and 0.01%-0.5% aluminium lead alloy is adopted to make negative plate matrix; Take percentage by weight be 22% lead powder, 68% lead oxide powder, 4% water, 4.5% sulfuric acid, 0.8% barium sulfate, 0.2% acetylene black, the lignin of 0.2%, the humic acid of 0.3% as preparation negative material batching; Manufacturing process comprises:
(1) after the lead powder taken and lead oxide powder being ground to form mixture in ball milling formula lead-power machine, mixture is inserted paste mixing machine, adds barium sulfate, acetylene black, lignin, humic acid simultaneously, mix about 5 minutes;
(2) the sulfuric acid taken and water were slowly joined in paste mixing machine in 15 minutes and carry out mixing in 30 minutes, make paste negative material;
(3) paste negative material is coated in negative plate matrix one side, 80-120 DEG C of drying 10 minutes in continuous stove; Again at the another side coating paste negative material of negative plate matrix, 80-120 DEG C of drying 10 minutes in continuous stove; Gross thickness 0.8-2.5mm is depressed at roll squeezer top roll after taking-up; Complete the manufacturing process of negative plate 3;
Step 3: make paste composite material
(1), according to percentage by weight, the specific area taking 50% is respectively 1900m
2the commercialization active carbon powder of/g, the acetylene black of 36%, 10% as the polytetrafluoroethylene and 4% of binding agent as the carboxymethyl cellulose of dispersant;
With powder mixer by step 3 (1) in active carbon powder and conductive black stir 30min, be mixed into powder-mixed carbon;
By step 3 (2) in powder-mixed carbon insert in high speed paste mixer, the ratio simultaneously adding 4-5mL water with 1g active carbon adds water, mix and blend 5min in high speed paste mixer in powder-mixed carbon, makes mixing carbon paste body;
By step 3 (1) in the polytetrafluoroethylene that takes and carboxymethyl cellulose join step 3 and (3) mix in carbon paste body, stir 30min, complete the manufacturing process of paste composite material;
Step 4: make the composite coating on negative plate
The paste composite material adopting coating machine step 3 to be made is coated in the negative plate one side that step 2 makes, after the drying of paste composite material, paste composite material step 3 made again is coated in described negative plate another side, after the drying of paste composite material, with roll squeezer by dried paste composite material on negative plate two sides, continuous drying kiln or in drying box with temperature 55 DEG C of dryings, negative plate two sides respectively forms composite coating 4, the total weight of composite coating is made to account for 3.3% of active material weight in negative plate, naturally cool to room temperature, namely the manufacturing process of composite coating on negative plate is completed,
Step 5: step 4 is made the negative plate with composite coating and be attached at dividing plate two sides, completes the manufacturing process of flat composite coating negative plate lead acid accumulator as shown in Figure 1.
Carry out large current density electric test to the sealed lead acid storage battery made, as shown in Figure 2: result shows, the discharge energy density of battery improves more than 20%, and power charge density improves more than 50%.
The present invention can also adopt the composite coating negative plate made to make common pregnant solution type lead acid accumulator, flat valve-control sealed lead acid battery, tube type sealed lead acid storage battery and takeup type sealed lead acid storage battery.
Although be described the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing under the ambit that present inventive concept and claim protect, a lot of form can also be made.These structures all belong within protection scope of the present invention.
Claims (7)
1. the preparation method of composite coating negative plate lead acid accumulator, comprises and keeping apart with the negative plate of dividing plate by positive plate and positive plate two sides, it is characterized in that: make composite coating on negative plate two sides; The manufacturing process of described composite coating comprises:
(1) active carbon and conductive black are mixed into powder-mixed carbon, solubilizer stirs into mixing carbon paste body, then adds binding agent and dispersant in mixing carbon paste body, stirs into paste composite material;
(2) paste composite material step (1) made is formed on negative plate two sides, and the drying of paste composite material is become composite coating;
(3) the total weight continuing the composite coating on negative plate two sides to be dried to composite coating accounts for 3.3% of active material weight in negative plate, after cooling, namely completes the manufacturing process of composite coating negative plate lead acid accumulator.
2. the preparation method of composite coating negative plate lead acid accumulator according to claim 1, is characterized in that: the ratio of described active carbon and solvent is 1g active carbon: 4-5mL; The time 10-50min stirred after solubilizer.
3. the preparation method of composite coating negative plate lead acid accumulator according to claim 1, is characterized in that: described binding agent be polytetrafluoroethylene, described be dispersant carboxycellulose; The weight ratio of described active carbon, conductive black, binding agent, dispersant is 10-15:8-10:2-3:1; Add binding agent and the thick mixing time of dispersant is 20-40min.
4. the preparation method of composite coating negative plate lead acid accumulator according to claim 1, is characterized in that: described drying is dry 1-24 hour in the dry kiln of 40 DEG C-60 DEG C or drying box.
5. the preparation method of composite coating negative plate lead acid accumulator any one of claim 1-3, is characterized in that: the specific area of described active carbon is greater than 1500m
2the commercialization active carbon powder of/g.
6. the preparation method of composite coating negative plate lead acid accumulator according to claim 1 or 3, is characterized in that: described conductive black is the one in acetylene black, section's qin carbon, graphite.
7. the preparation method of composite coating negative plate lead acid accumulator according to claim 2, is characterized in that: described solvent is water or alcohol.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310607818.5A CN104659425A (en) | 2013-11-25 | 2013-11-25 | Method for preparing composite coating negative plate lead-acid storage battery |
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| CN201310607818.5A CN104659425A (en) | 2013-11-25 | 2013-11-25 | Method for preparing composite coating negative plate lead-acid storage battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104851595A (en) * | 2015-06-04 | 2015-08-19 | 遂宁宏成电源科技有限公司 | Super capacitor battery |
| CN106463681A (en) * | 2014-06-17 | 2017-02-22 | Ocv智识资本有限责任公司 | Anti-sulphation pasting mats for lead-acid batteries |
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| US20060263692A1 (en) * | 2002-05-22 | 2006-11-23 | Firefly Energy Inc. | Carbon coated battery electrodes |
| CN101710627A (en) * | 2009-11-05 | 2010-05-19 | 苏州大学 | Cathode capacitive lead-acid accumulator |
| CN102263254A (en) * | 2011-06-22 | 2011-11-30 | 吉林汇能科技有限公司 | Method for producing composite anode of lead acid battery |
| CN202159736U (en) * | 2011-08-13 | 2012-03-07 | 中国船舶重工集团公司第七一二研究所 | Lead-acid storage battery with bipolarity negative plate |
| CN102856528A (en) * | 2012-10-12 | 2013-01-02 | 天能集团江苏科技有限公司 | Preparation method of super storage battery lead-carbon negative plate |
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2013
- 2013-11-25 CN CN201310607818.5A patent/CN104659425A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060263692A1 (en) * | 2002-05-22 | 2006-11-23 | Firefly Energy Inc. | Carbon coated battery electrodes |
| CN101710627A (en) * | 2009-11-05 | 2010-05-19 | 苏州大学 | Cathode capacitive lead-acid accumulator |
| CN102263254A (en) * | 2011-06-22 | 2011-11-30 | 吉林汇能科技有限公司 | Method for producing composite anode of lead acid battery |
| CN202159736U (en) * | 2011-08-13 | 2012-03-07 | 中国船舶重工集团公司第七一二研究所 | Lead-acid storage battery with bipolarity negative plate |
| CN102856528A (en) * | 2012-10-12 | 2013-01-02 | 天能集团江苏科技有限公司 | Preparation method of super storage battery lead-carbon negative plate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106463681A (en) * | 2014-06-17 | 2017-02-22 | Ocv智识资本有限责任公司 | Anti-sulphation pasting mats for lead-acid batteries |
| CN104851595A (en) * | 2015-06-04 | 2015-08-19 | 遂宁宏成电源科技有限公司 | Super capacitor battery |
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