CN1482695A - Positive and negative electrode active substance formulation for valve controlled and sealed lead-acid accumulator - Google Patents
Positive and negative electrode active substance formulation for valve controlled and sealed lead-acid accumulator Download PDFInfo
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- CN1482695A CN1482695A CNA021382506A CN02138250A CN1482695A CN 1482695 A CN1482695 A CN 1482695A CN A021382506 A CNA021382506 A CN A021382506A CN 02138250 A CN02138250 A CN 02138250A CN 1482695 A CN1482695 A CN 1482695A
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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
A positive and negative electrode active compound formulation for valve control type sealed lead-acid accumulator, wherein sodium dioxide is used to replace sulfuric acid, and right amount of PTEF is added into the positive electrode formulation, plumping agent is added into the negative electrode formulation. The invention realizes low cost of manufacture, high production efficiency and improved utilization ratio of active compound, the invention also reduces the equipment corrosion and environmental pollution, the battery made thereby can be used in the field of floating charge and circulation application.
Description
Technical Field
The invention relates to a formula of lead plaster used as an active material of a positive electrode and a negative electrode of a sealed lead-acid storage battery, belonging to the technical field of sealed lead-acid storage batteries.
Background
In the traditional lead-acid battery production process, the used lead powder is Baton powder or ball milling powder, the lead powder is not powdery pure lead particles, but is a two-phase granular powder material of metal lead with a layer of lead oxide covering the surface, the degree of oxidation is generally between 70 and 85 percent, and about 15 to 30 percent of the residual free lead in the lead powder is further oxidized in the subsequent paste mixing and curing processes until the content of the free lead is reduced to below 5 percent, preferably not more than 1 percent. If the content of free lead in the cured polar plate is more than 5 percent, the formation is difficult, and the capacity of the polar plate is influenced. The curing process generally requires about 48 to 72 hours and is carried out under strictly controlled temperature and humidity conditions. The traditional lead plaster formula is a mixture of lead powder, sulfuric acid, deionized water and an additive, the temperature is strictly controlled in the plaster mixing process (the temperature cannot be higher than 70 ℃), and the density of the sulfuric acid used in the plaster is higher, so that the corrosion to plate coating equipment is accelerated, and the environmental pollution and the harm to the health condition of an operator are caused by acid mist.
Disclosure of Invention
The invention aims to provide a positive and negative electrode active material formula for a valve-regulated sealed lead-acid storage battery, which shortens the production period, reduces the production cost, reduces the environmental pollution, and improves the initial capacity and the cycle life of the battery.
Thetechnical scheme of the invention is as follows: the formula of the positive active material comprises the following components in percentage by weight:
70-80% of lead powder and 5-10% of sodium peroxide
5-8% of PTFE emulsion and 8-12% of deionized water
Wherein the concentration of the PTFE emulsion is 6%, which has the effect of increasing the binding force between the active substance particles.
The formula of the negative active material comprises the following components in percentage by weight:
70-80% of lead powder and 5-12% of sodium peroxide
3-8% of swelling agent and 8-10% of deionized water
The expanding agent is a mixture of barium sulfate, sodium lignosulphonate, humic acid and carbon black, and aims to prevent the shrinkage of the negative active material in the charging and discharging processes.
The sodium peroxide powder in the positive and negative electrode active material formula plays a vital role, and the functions of the sodium peroxide powder mainly comprise:
1. and completely oxidizing free lead in the lead powder into lead oxide in the paste mixing process. Chemical reactions occurring when mixing paste:
2. the sodium hydroxide in the formula reacts with sulfuric acid in the subsequent acid filling and formation processes to generate sodium sulfate, and the presence of the sodium sulfate can refine 4 PbO. PbSO formed in the acid filling process4The crystal grains are beneficial to the formation reaction, thereby not only improving the initial capacity of the battery (the initial discharge after formation is more than one hundred percent of rated capacity), but also ensuring longer cycle life.
3. The sodium sulfate generated in the reaction increases the activity of ions and reduces the resistance to charging.
4. The sodium sulfate generated in the reaction can prevent lead sulfate formed in the discharge from depositing in the separator, thereby avoiding the occurrence of lead dendrite short circuit.
The novel lead plaster formula adopted as the anode and cathode active material has the following characteristics and advantages:
(1) can obtain lead plaster with lower apparent specific gravity, and the apparent specific gravity of common lead plaster is generally 3.8g/cm3～4.2g/cm3The apparent specific gravity of the novel lead paste can be as low as 3.0g/cm3～3.2g/cm3The lower apparent specific gravity of the lead paste can improve the porosity of the polar plate, so that more sulfuric acid can be diffused to the deep part of the polar plate, and the reaction depth and the utilization rate of active substances are greatly improved.
(2) In the traditional lead-acid battery production process, the quality of the pole plates is not uniform due to the difference of the oxidation degrees of lead powder, so that the voltage consistency of the grouped batteries is influenced; when the novel lead paste formula is adopted as an electrode active substance, free lead does not exist basically, so that the uniformity of the polar plate is ensured.
(3) The production process can be simplified, and the production time can be shortened. If the novel lead paste formula is used as an electrode active substance to prepare the lead paste, the steps of oxidation of free lead in the lead paste, recrystallization of basic lead sulfate and the like in the curing process can be omitted, the time of the curing process is greatly shortened, the period for producing the battery is shortened, electric energy, manpower, equipment depreciation and the like consumed in the traditional long curing process are saved, and the production cost is reduced.
(4) When the novel lead plaster formula is adopted as an active substance for pasting, sulfuric acid is not needed, so that a large amount of heat is avoided, the corrosion of the sulfuric acid to equipment is reduced, and the paste mixing time is saved.
Detailed Description
Example 1: the formula comprises the following components in percentage by weight: 80% of lead powder and Na2O25 percent of PTFE5 percent and 10 percent of deionized water, carrying out positive electrode paste mixing, firstly mixing and stirring lead powder and sodium peroxide powder for 3 minutes, then adding PTFE emulsion and stirring for 5 minutes, then adding deionized water, and fully stirring for 30 minutes to obtain a positive electrode plate; the formula comprises the following components: lead powder 77% and Na2O28 percent of expanding agent and 10 percent of deionized water, mixing and stirring the lead powder and the sodium peroxide powder for 3 minutes, and then adding the expanding agentStirring for 5 minutes, then adding deionized water, and fully stirring for 30 minutes to obtain the negative plate. The coated pole plate can be dried for 10-12 hours at room temperature or dried for 4-6 hours in a drying room at 60 ℃ without curing, and then the assembly and internal formation procedures can be carried out, and the rest processes can completely adopt the existing production process of the valve-regulated sealed lead-acid storage battery. The valve-controlled sealed lead-acid storage battery assembled into 2V200Ah is subjected to performance test, the 10h rate-to-weight ratio energy reaches 33.9Wh/kg, the 1h rate-to-weight ratio energy reaches 24.5Wh/kg, the 100 percent DOD cycle life reaches 300 times, and other performance indexes all meet the specifications in YD/T799-1996 'technical requirements and test methods for valve-controlled sealed lead-acid storage batteries for communication'. The result proves that the valve-controlled sealed lead-acid storage battery prepared by the positive and negative electrode active material formula can be completely applied to the fields of floating charge use, recycling use and the like, simultaneously reduces the production cost, shortens the production time, and can save the time of 40-50 h compared with the time of adopting the common formula.
Examples 2,3 only the positive and negative electrode formulations were changed as shown in the following table:
| fruit of Chinese wolfberry Applying (a) to Example (b) | The positive active substance formula% | The formulation of the negative active material% | ||||||
| Lead powder | Na2O2 | PTFE | Deionized water | Lead powder | Na2O2 | Expanding agent | Deionized water | |
| 2 | 76 | 7 | 6 | 11 | 74 | 12 | 6 | 8 |
| 3 | 72 | 10 | 8 | 10 | 75 | 11 | 5 | 9 |
Claims (4)
1. The positive active material formula for the valve-controlled sealed lead-acid storage battery comprises lead powder and deionized water, and is characterized in that the formula contains sodium peroxide and PTFE emulsion, and the weight percentages of the components in the total amount of the active materials are as follows: 70-80% of lead powder, 5-10% of sodium peroxide, 5-8% of PTFE emulsion and 8-12% of deionized water.
2. The positive electrode active material formulation for valve regulated lead acid batteries according to claim 1, wherein the PTFE emulsion has a concentration of 6%.
3. The negative active material formula for the valve-controlled sealed lead-acid storage battery comprises lead powder and deionized water, and is characterized in that the formula contains sodium peroxide and an expanding agent, and the weight percentage of each component in the total amount of the active materials is as follows: 70-80% of lead powder, 5-12% of sodium peroxide, 3-8% of an expanding agent and 8-10% of deionized water.
4. The formulation of negative active material for valve-regulated lead-acid battery according to claim 3, wherein said expanding agent is a mixture of barium sulfate, sodium lignosulfonate, humic acid and carbon black.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021382506A CN1286197C (en) | 2002-09-11 | 2002-09-11 | Positive and negative electrode active substance formulation for valve controlled and sealed lead-acid accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021382506A CN1286197C (en) | 2002-09-11 | 2002-09-11 | Positive and negative electrode active substance formulation for valve controlled and sealed lead-acid accumulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1482695A true CN1482695A (en) | 2004-03-17 |
| CN1286197C CN1286197C (en) | 2006-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021382506A Expired - Fee Related CN1286197C (en) | 2002-09-11 | 2002-09-11 | Positive and negative electrode active substance formulation for valve controlled and sealed lead-acid accumulator |
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| CN (1) | CN1286197C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882681A (en) * | 2010-06-21 | 2010-11-10 | 冯家齐 | Positive and negative plate additive of lead-acid accumulator and preparation method thereof |
| CN103000883A (en) * | 2012-12-26 | 2013-03-27 | 江苏苏中电池科技发展有限公司 | Formula of positive active material for lead-acid power battery and preparation method of positive active material |
| CN103633331A (en) * | 2013-11-28 | 2014-03-12 | 江苏科能电源有限公司 | Positive active material for lead-acid power battery and preparation method of positive active material |
| CN103779557A (en) * | 2014-01-03 | 2014-05-07 | 河北超威电源有限公司 | Lead plaster for low temperature resistant lead storage battery for electric scooter and preparation method of lead plaster |
| CN105552364A (en) * | 2016-01-07 | 2016-05-04 | 超威电源有限公司 | Preparation method for lead paste used for lead-acid storage battery positive electrode and capable of saving curing process |
| CN112002876A (en) * | 2020-07-23 | 2020-11-27 | 天能电池集团股份有限公司 | Quick manufacturing process for lead storage battery pole plate |
-
2002
- 2002-09-11 CN CNB021382506A patent/CN1286197C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882681A (en) * | 2010-06-21 | 2010-11-10 | 冯家齐 | Positive and negative plate additive of lead-acid accumulator and preparation method thereof |
| CN103000883A (en) * | 2012-12-26 | 2013-03-27 | 江苏苏中电池科技发展有限公司 | Formula of positive active material for lead-acid power battery and preparation method of positive active material |
| CN103633331A (en) * | 2013-11-28 | 2014-03-12 | 江苏科能电源有限公司 | Positive active material for lead-acid power battery and preparation method of positive active material |
| CN103779557A (en) * | 2014-01-03 | 2014-05-07 | 河北超威电源有限公司 | Lead plaster for low temperature resistant lead storage battery for electric scooter and preparation method of lead plaster |
| CN103779557B (en) * | 2014-01-03 | 2016-01-27 | 河北超威电源有限公司 | A kind of electric boosted automobile-used low temperature resistant lead accumulator lead plaster and preparation method thereof |
| CN105552364A (en) * | 2016-01-07 | 2016-05-04 | 超威电源有限公司 | Preparation method for lead paste used for lead-acid storage battery positive electrode and capable of saving curing process |
| CN105552364B (en) * | 2016-01-07 | 2017-12-29 | 超威电源有限公司 | A kind of lead acid battery positive electrode exempts to solidify the preparation method of lead plaster |
| CN112002876A (en) * | 2020-07-23 | 2020-11-27 | 天能电池集团股份有限公司 | Quick manufacturing process for lead storage battery pole plate |
| CN112002876B (en) * | 2020-07-23 | 2022-03-01 | 天能电池集团股份有限公司 | Quick manufacturing process for lead storage battery pole plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1286197C (en) | 2006-11-22 |
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