CN1337751A - Manufacture of lead accumulator modified by nanometer silicon-base oxide - Google Patents
Manufacture of lead accumulator modified by nanometer silicon-base oxide Download PDFInfo
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- CN1337751A CN1337751A CN00122188A CN00122188A CN1337751A CN 1337751 A CN1337751 A CN 1337751A CN 00122188 A CN00122188 A CN 00122188A CN 00122188 A CN00122188 A CN 00122188A CN 1337751 A CN1337751 A CN 1337751A
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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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Abstract
The present invention discloses a method for producing lead accumulator (plate) by using nanometer silicon base oxide. Said lead accumulator plate is a paste-coated powder porous plate made up by using powdered active substance lead powder and nanometer silicon base oxide, i,e, in the powder paste of plate the lead paste is made according to the weight ratio of 90-98.5% of lead powder and 1.5-10% of nanometer silicon base oxide. It can effectively reduce autoxidation extract of lead powder and self-discharge quantity of accumulator, can increase accumulation capacity by 20%, reduce plate crack and prolong its service life. It is specially suitable for using in lead acid battery.
Description
The invention relates to a manufacturing process of a storage battery.
Existing lead-acid batteries, including lead-acid batteries and alkaline batteries, have a wide range of applications. The former includes fixed DC power supply for machine room, such as acid-proof and explosion-proof accumulator, and movable lead-acid accumulator and sealed lead-acid accumulator for vehicle starting, lighting and communication; the latter is a series of iron-nickel batteries, cadmium-nickel batteries, silver-zinc batteries, lithium batteries and hydrogen-nickel batteries. They are similar in structure and composed of positive and negative plates, battery jar, separator and electrolyte, and the plates are immersed in the electrolyte. Due to the chemical change between the electrode and the electrolyte, a potential difference is generated between the two electrode plates, and power can be supplied to the outside by utilizing the potential difference. The conversion from chemical energy to electric energy is realized in the power supply process. In fact, the charge and discharge process of a lead storage battery is a chemical reaction process between a polar plate and an electrolyte, and is a reversible change process between chemical energy and electric energy. The active material contained or its product plays a decisive role in the electrochemical reaction. The active substance is lead powder for lead-acid battery, i.e. lead oxide or lead tetraoxide, which is mixed with dilute sulfuric acid to form lead paste, and the lead paste is electrolyzed in the dilute sulfuric acid. In addition, the plate has the functions of conducting electricity, distributing and supporting active substances through the plate grid. Meanwhile, if the active material and the electrolyte have as many contact opportunities as possible, the utilization rate of the active material can be improved. Therefore, if the polar plate has better porosity, the change of the concentration of the electrolyte can be reduced, and the charge and discharge performance of the storage battery can be improved. The applications within the subject matter are not documented.
The invention aims to provide a method for manufacturing a lead storage battery modified by nano silicon-based oxide. The nano silicon-based oxide is added, the fine structure of the pasted polar plate is improved, and the high-performance polar plate is manufactured, so that the overall performance of the lead storage battery is improved.
The invention is based on the basic method of adding nano-scale silicon-based oxide powder into lead powder in a paste coating formula and then preparing a high-performance polar plate, and the 'disulfate theory' relates to the flow reaction of a lead storage battery, namely paste-type electrode reaction and battery reaction. The reaction formula is as follows:
putting lead powder with certain fineness into a sealed container, adding nano silicon-based oxide materials according to the weight ratio, fully stirring and mixing, then putting into a paste mixer, adding sulfuric acid and other auxiliary materials to prepare paste for the plate, then coating the paste, filling and coating the lead paste on a grid, rolling the lower surface of the grid to prepare a green plate, carrying out pickling treatment and curing, drying to meet the drying requirement, forming active substances on the plate into lead dioxide and velvet lead during formation, finally clustering or coating, and carrying out assembly. The method is characterized in that a nano silicon-based oxide material formula is added into the powder paste of the polar plate. The nano silicon-based oxide has the minimum requirement that the primary particle size is less than 100nm, specific surface area>300m2(ii) in terms of/g. Specific formulation examples are given below.
Example 1: paste-coating type positive plate lead paste modification formula
Lead powder 850 + -50 KG
NMSiO2-x100±50KG
Sulfuric acid (density 1.070kg/L) 37L
(or density 1.100kg/L) 30L
Wherein NMSiO2-xThe MNIP brand product produced and sold by the factory has a wide relative value range and a good effect.
Example 2: negative plate lead plaster modified formula
A. Lead powder 225 +/-15 KG
NMSiO2-x25±15KG
1.0-1.5KG barium sulfate
Humic acid 2.5-3.0KG
Rosin 0.075KG
Sulfuric acid (density 1.07kg/L) 37L
(or density 1.100kg/L) 30L
B. Lead powder 225 +/-15 KG
NMSiO2-x25±15KG
1.0-1.5KG barium sulfate
Humic acid 1.75-2.25KG
α -hydroxy β -naphthoic acid 0.75KG
Sulfuric acid (density 1.070kg/L) 37L
(or density 1.100kg/L) 30L
The negative plate lead paste modified formula in the example 2 is used for negative plates of lead-acid storage batteries for automobiles and motorcycles, which are less than 3mm in thickness, and is used for dry charged negative plates.
In which the HSO takes part in the reaction4 -Is a negatively charged "hydrogen sulfate radical", which is a polyvalent acid H2OS4First generated upon ionization in aqueous solutions.
As seen from the above equation, the charged sulfuric acid not only conducts current, but also participates in the battery reaction. The state of charge of the lead storage battery can be judged by measuring the density of sulfuric acid with a densitometer. Therefore, the structural properties of the pasted plate and the active material thereof, and the quantity and density of the sulfuric acid stored in the maximum effective surface area play a main role in the storage capacity of the dry lead storage battery.
The invention relates to a method for manufacturing a lead storage battery modified by nano silicon-based oxide, which is used for manufacturing the lead storage battery comprising a positive plate, a negative plate, a battery jar, a separator and electrolyte according to the conventional process and is characterized in that the plate is a paste-coated powder porous plate made of lead powder of a powdery active substance and the nano silicon-based oxide; in the lead plaster preparation process, adding the nano silicon-based oxide before adding water and acid liquor, fully stirring uniformly, and then manufacturing a positive plate and a negative plate according to the traditional method, wherein: according to the weight ratio
Lead powder of powdery active substance 90-98.5%
1.5 to 10 percent of nano silicon-based oxide.
The fineness of the lead powder is 10-20 mu m.
The average grain diameter of the nano silicon-based oxide is 10 +/-5 nm.
The nano silicon-based oxide is NMSiO2-xAnd x is 0.4-0.8 of the coordination shortage number of the oxygen atom.
The invention has the following positive effects: because the nano silicon-based oxide is added into the lead powder, the lead powder (pbo) with the fineness of 10 mu m to 20 mu m after ball milling is used2) The core is coated with nanometer silicon-based oxide (NMSiO)2-x) The nano-scale powder reduces the autoxidation degree of the lead powder, and reduces the quality problems of plate cracking and short service life caused by the autoxidation degree. At the same time, the nano silicon-based oxide nano-grade powder with high oxidation degree coated outside is stirred and mixedThe lead paste is inserted into the powdery active substance of the electrode reaction, so that the density and the proportion of the lead paste are changed, and the utilization rate of the active substance is improved; the nanometer silicon-based oxide nanometer powder has the acid absorption capacity of more than 300 percent of that of the lead powder, so that the capacity of sulfuric acid is increased, the permeation of the sulfuric acid to active substances is enhanced, and the flow reaction of the sulfuric acid in the lead storage battery is promoted. The test shows that it can effectively reduce the self-discharge capacity of accumulator and increase the accumulating capacity by 20%.
The nano silicon-based oxide material can be purchased from the market. The shape of the product is flocculent and reticular particle structure, a large amount of unsaturated residual bonds and hydroxyl groups in different bonding states exist on the surface, and the molecular formula is SiO2-xAnd the value of X is 0.4-0.8. The average particle diameter is 10 +/-5 nm, and the active specific surface area is 640-700m2In terms of/g, purity>99%, the phase being amorphous.
The production process of the modified lead-acid battery is similar to that of the conventional method (taking a lead-acid battery as an example), and comprises the steps of manufacturing or purchasing basic structural components and components thereof, assembling, adding acid and packaging. The manufacture of the polar plate is as follows:
Claims (5)
1. a method for preparing lead accumulator modified by nano silicon-based oxide, which is prepared by conventional process, comprises positive and negative plates, battery jar, separator and electrolyte, and is characterized in that the plate is a paste-type powder porous plate prepared from lead powder of powdery active substance and nano silicon-based oxide; in the lead plaster preparation process, adding the nano silicon-based oxide before adding water and acid liquor, fully stirring uniformly, and then manufacturing a positive plate and a negative plate according to the traditional method, wherein: according to the weight ratio
The lead powder of the powdery active substance is 90-98.5%
The content of the nano silicon-based oxide is 1.5-10%.
2. The method for manufacturing nano silicon-based oxide modified lead storage battery according to claim 1, wherein the fineness of the lead powder is 10 μm to 20 μm.
3. The method for manufacturing lead-acid battery modified by nano-silica-based oxide according to claim 1, wherein said nano-silica-based oxide has a primary particle size of less than 100nm and a specific surface area of more than 300m2/g。
4. The method for manufacturing a lead-acid battery modified with nano-silica-based oxide according to claim 1, wherein the nano-silica-based oxide has an average particle size of 10 ± 5 nm.
5. The method for manufacturing lead-acid battery modified by nano-silica-based oxide according to claim 1, wherein said nano-silica-based oxide is NMSiO2-xAnd x is 0.4-0.8 of the coordination shortage number of the oxygen atom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001221884A CN1200470C (en) | 2000-08-04 | 2000-08-04 | Manufacture of lead accumulator modified by nanometer silicon-base oxide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001221884A CN1200470C (en) | 2000-08-04 | 2000-08-04 | Manufacture of lead accumulator modified by nanometer silicon-base oxide |
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| Publication Number | Publication Date |
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| CN1337751A true CN1337751A (en) | 2002-02-27 |
| CN1200470C CN1200470C (en) | 2005-05-04 |
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| CNB001221884A Expired - Fee Related CN1200470C (en) | 2000-08-04 | 2000-08-04 | Manufacture of lead accumulator modified by nanometer silicon-base oxide |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100557863C (en) * | 2005-11-24 | 2009-11-04 | 江苏双登集团有限公司 | Lead-acid storage battery and paste mixing process for electric moped |
| CN101958417A (en) * | 2010-07-26 | 2011-01-26 | 武汉银泰科技电源股份有限公司 | Anode additive of lead acid storage battery |
| CN106450325A (en) * | 2016-08-31 | 2017-02-22 | 浙江平湖华龙实业股份有限公司 | Modified nanometer silicon-based oxide composite lead-acid battery of electric baby carriage |
-
2000
- 2000-08-04 CN CNB001221884A patent/CN1200470C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100557863C (en) * | 2005-11-24 | 2009-11-04 | 江苏双登集团有限公司 | Lead-acid storage battery and paste mixing process for electric moped |
| CN101958417A (en) * | 2010-07-26 | 2011-01-26 | 武汉银泰科技电源股份有限公司 | Anode additive of lead acid storage battery |
| CN106450325A (en) * | 2016-08-31 | 2017-02-22 | 浙江平湖华龙实业股份有限公司 | Modified nanometer silicon-based oxide composite lead-acid battery of electric baby carriage |
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| Publication number | Publication date |
|---|---|
| CN1200470C (en) | 2005-05-04 |
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Owner name: ZHEJIANG HONGSHENG MATERIAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHOUSHAN TOMORROW NANOMATERIALS CO., LTD. Effective date: 20080516 |
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Effective date of registration: 20080516 Address after: No. 150 Xinqiao Road, Dinghai, Zhejiang, Zhoushan Patentee after: Gelante Special Paint Co., Ltd., Zhoushan City Address before: No. 1, Shenjiamen Industrial Zone, Putuo District, Zhoushan, Zhejiang, Pingyang Patentee before: Zhoushan Mingri Nanometer Techn Co., Ltd. |
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