CN103078083A - Lead and carbon mixture and method for manufacturing lead-acid battery electrode plate - Google Patents
Lead and carbon mixture and method for manufacturing lead-acid battery electrode plate Download PDFInfo
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- CN103078083A CN103078083A CN2013100150589A CN201310015058A CN103078083A CN 103078083 A CN103078083 A CN 103078083A CN 2013100150589 A CN2013100150589 A CN 2013100150589A CN 201310015058 A CN201310015058 A CN 201310015058A CN 103078083 A CN103078083 A CN 103078083A
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- lead
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- carbon mixture
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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
Abstract
The invention discloses a lead and carbon mixture for manufacturing a lead-acid battery electrode plate. The lead and carbon mixture is prepared from the following materials by weight percentage: 20-80 percent of carbon mixture and 20-80 percent of lead power, wherein the carbon mixture is prepared from the following materials by weight percentage: 10-80 percent of activated carbon, 10-50 percent of conductive carbon material, 5-50 percent of adhesive and 0.1-1 percent of fiber. The invention discloses a method for manufacturing the lead-acid battery electrode plate with the lead and carbon mixture. The bonding strength of a coating and the surface of the electrode plate is high, the effect of a hydrogen evolution inhibitor is good, and the coating can be coated onto the surface of a grid and can also be coated onto the surface of the electrode plate. The method is more flexible than the traditional process for manufacturing lead-acid batteries.
Description
Technical field
The present invention relates to the lead carbon battery field, relate in particular to the method that the plumbous carbon mixture of a kind of plumbous carbon mixture for the lead-acid battery pole plate and employing is made the lead-acid battery pole plate.
Background technology
Australian Union's Council Scient Ind Res (CSIRO) has obtained considerable progress with Japanese ancient river battery Co., Ltd. in plumbous carbon battery field, and has applied for Patents in various countries.How these patents makes active carbon and positive and negative pole active matter good combination if relating generally to.
Furukawa company mentions in EP2424011 and CN102484245A, the negative plate that has applied activated carbon coating is immersed in the sulfuric acid solution of the 1.30g/L that has dissolved 18 water and aluminum sulfate, by dipping, meeting absorbed portion lead ion in the activated carbon coating micropore, in the charging process process before changing into, lead ion reduction in the micropore generates plumbous, the network good with the plumbous formation of the reduction of polar board surface.This network can guarantee that activated carbon coating is combined well with polar board surface.This method is improved the adhesive property of coating and polar board surface when reducing active carbon layer bonding agent consumption, improved the performance of active carbon than electric capacity.But this patent has following defective:
The one,, the interior adsorpting lead ion of active carbon is limited in the pole plate carbon-coating.
Applied the dip time of pole plate in sulfuric acid solution of activated carbon coating by prolongation, the lead ion method that reaches absorption more amount in the activated carbon capillary is not very reliable.In sulfuric acid solution, the oxide of the lead in the pole plate and sulfuric acid reaction generate lead sulfate, and the lead sulfate solubility in the pole plate is very low, is difficult to enough lead ions and is diffused into carbon-coating, and be adsorbed in the activated carbon capillary.
The 2nd,, lead itself is reasonable liberation of hydrogen inhibitor, if but do not have relatively large lead to be adsorbed in activated carbon surface and the micropore, just can't play obvious liberation of hydrogen inhibition.So through process like this active carbon and lead plaster compound polar plate, also need other liberation of hydrogen inhibitor of interpolation in carbon-coating or the electrolyte.
Summary of the invention
The technical problem that the present invention makes in order to solve above-mentioned existing lead-acid battery, open up simultaneously the manufacture craft of new lead-acid battery pole plate, propose that a kind of bond strength is high, the liberation of hydrogen inhibitor effect reaches well the flexibly method of plumbous carbon mixture and making lead-acid battery pole plate of making.
A kind of plumbous carbon mixture that the present invention proposes, its percentage by weight by following material is prepared:
Carbon mixture: 20% ~ 80%, lead powder: 20% ~ 80%;
Wherein, described carbon mixture is prepared by the percentage by weight of following material:
Active carbon: 10% ~ 80%, conduction Carbon Materials: 10 ~ 50%, bonding agent: 5% ~ 50%, fiber: 0.1% ~ 1%.
Described bonding agent comprises: gather a kind of of inclined to one side tetrafluoroethene (PVDF), polytetrafluoroethylene (PTFE) and butadiene-styrene rubber (SBR); Described fiber is short fiber or various conductive carbon fibre.
A kind of method that adopts plumbous carbon mixture to make lead-acid battery pole plate (grid) that the present invention proposes, its step is as follows:
The mixing of step 1, plumbous carbon mixture and solvent
Weigh in proportion the raw material of plumbous carbon mixture: lead powder, active carbon, conduction Carbon Materials, bonding agent, fiber.Weigh again percentage by weight and be 30% ~ 50% plumbous carbon mixture, percentage by weight and be 50% ~ 70% solvent.First active carbon, conduction Carbon Materials, bonding agent, fiber and solvent are dropped in the mixer, mix with 1000 rev/mins of rotating speeds, mixed one hour, add again lead powder and proceeded to stir one hour, make plumbous charcoal mixed slurry.
Described solvent is: deionized water, acetone, absolute ethyl alcohol, 1-METHYLPYRROLIDONE a kind of.
The coating of step 2, plumbous charcoal mixed slurry and typing
Plumbous charcoal mixed slurry is coated in the battery pole plates surface, after pole plate is placed 40 ℃ ~ 120 ℃ baking oven, after dry tack free, take out and carry out roll-in, the pressure of roll-in is 0.1 ~ 1 MPa;
The lead plaster that perhaps will prepare first is coated in the battery pole plates surface, again pole plate is cured, toasts and dewater; Then with described plumbous charcoal mixed slurry, be coated in the surface of the lead plaster layer of pole plate, pole plate is placed 40 ℃ ~ 120 ℃ baking oven, after dry tack free, take out and carry out roll-in, the pressure of roll-in is 0.1 ~ 1 MPa.
The present invention sneaks into lead powder in active carbon, conduction Carbon Materials, bonding agent and the fiber, is made into the coating that is coated on grid or polar board surface with solvent again.Lead powder by the q.s in the coating is reduced when battery charges, and with the plumbous comparatively network of densification that forms of the reduction on pole plate lead plaster surface or grid surface, has significantly improved the adhesive strength of coating and grid or polar board surface; Behind the lead powder and the sulfuric acid reaction in the electrolyte in the coating, can form comparatively sufficient lead ion in coating, the lead ion of q.s can be adsorbed in the hole in the active carbon and surface, and is reduced into lead, plays obvious liberation of hydrogen inhibitor effect; Coating both can be coated in the grid surface, also can be coated in polar board surface, and was more more flexible than the technique of traditional fabrication lead-acid battery.
Embodiment
The present invention will be described in detail below by embodiment:
A kind of plumbous carbon mixture that the present invention proposes, its percentage by weight by following material is prepared:
Carbon mixture: 20% ~ 80%, lead powder: 20% ~ 80%;
Wherein, described carbon mixture is prepared by the percentage by weight of following material:
Active carbon: 10% ~ 80%, conduction Carbon Materials: 10 ~ 50%, bonding agent: 5% ~ 50%, fiber: 0.1% ~ 1%.
Active carbon requires its specific area at 1000 ~ 3000m2/g, preferred 1500 ~ 1800m2/g.The conduction Carbon Materials comprises: acetylene black, Ketjen black, electrically conductive graphite etc. can form the conduction Carbon Materials of conductive network structure.Bonding agent comprises: gather a kind of of inclined to one side tetrafluoroethene (PVDF), polytetrafluoroethylene (PTFE) and butadiene-styrene rubber (SBR); Described fiber is short fiber or various conductive carbon fibre.
Carbon mixture accounts for 20% ~ 80% of coating gross weight, and namely when carbon mixture content surpassed 20%, lead powder fully was wrapping in the coating, the bonding main dependence of coating be the cementability of bonding agent, adhesive strength obtains to improve on the contrary.When lead powder content be less than gross weight 20% the time, grid, the bonding force between the lead plaster of coating and pole plate can weaken, and peel off easily.Therefore, lead powder content is no less than 20% of gross weight.
Adopt plumbous carbon mixture to make the preferred embodiment of the method for lead-acid battery pole plate (grid), step is as follows:
The mixing of step 1, plumbous carbon mixture and solvent
Weigh in proportion the raw material of plumbous carbon mixture: lead powder, active carbon, conduction Carbon Materials, bonding agent, fiber weigh percentage by weight and are 30% ~ 50% plumbous carbon mixture, percentage by weight and be 50% ~ 70% solvent again.First active carbon, conduction Carbon Materials, bonding agent, fiber and solvent are dropped in the mixer, mix with 1000 rev/mins of rotating speeds, mixed one hour, add again lead powder and proceed to stir and make plumbous charcoal mixed slurry after one hour.
Wherein, solvent comprises: deionized water, acetone, absolute ethyl alcohol, 1-METHYLPYRROLIDONE (NMP) etc.The bonding agent that is suitable for deionized water is polytetrafluoroethylene and butadiene-styrene rubber; What be fit to acetone and other organic solvent is poly-inclined to one side tetrafluoroethene.
In the specific embodiment, the preparation of plumbous carbon mixture and solvent, can adopt following proportioning:
Plumbous carbon mixture: 30%, solvent: 70%; Or plumbous carbon mixture: 40%, solvent: 60%; Or plumbous carbon mixture: 50%, solvent: 50%.
The carbon mixture of the plumbous carbon mixture of preparation and the preparation of lead powder in the specific embodiment, can adopt following proportioning:
Carbon mixture: 20%, lead powder: 80%; Or carbon mixture: 80%, lead powder: 20%; Or
Carbon mixture: 50%, lead powder: 50%;
And carbon mixture is wherein prepared by the percentage by weight of following material:
(1) active carbon: 80%, acetylene black: 10 %, bonding agent PVDF:9%, short fiber: 1%.
Or (2) active carbon: 10%, Ketjen black: 50%, bonding agent PTFE:39.4%, short fiber: 0.6%.
Or (3) active carbon: 45 %, electrically conductive graphite: 30%, bonding agent SBR:024.9%, short fiber: 0.1%.
Or (4) active carbon: 29%, acetylene black: 20%, bonding agent PTFE:50%, short fiber: 1%.
Or (5) active carbon: 54.5%, electrically conductive graphite: 40%, bonding agent PVDF:5%, short fiber: 0.5%.
Short fiber in the specific embodiment also can substitute with various conductive carbon fibres.
The coating of step 2, plumbous charcoal mixed slurry and typing
The plumbous charcoal mixed slurry that stirs is taken out, be coated in pole plate (grid) surface.Coating layer thickness is consistent with electrode thickness, and the coating porosity is 70%.Pole plate is placed the baking oven of 40 ℃ ~ 120 ℃ (preferred 60 ℃ ~ 100 ℃) again, after dry tack free, take out and carry out roll-in, the pressure of roll-in is 0.1 ~ 1(preferred 0.2 ~ 0.5) MPa.In the better enforcement, pole plate is placed 80 ℃ of lower bakings 10 hours, then put into hydraulic press to push, pressure is 0.2 MPa, makes utter misery pole plate (grid).
To be coated in by the lead plaster that prior art is made the surface of the complete utter misery pole plate of drying, the flow process according to existing polar plate solidification is cured again.Then will solidify complete pole plate and assemble according to the storage battery assembly technology, and inject the sulfuric acid solution of 1.30g/L, leave standstill 1 ~ 8 as a child, preferred 2 ~ 4 hours.Charge charging current 0.01C ~ 0.5C, preferred 0.05C ~ 0.15C, 1 ~ 10 hour charging interval, preferred 2 ~ 5 hours.Then change normal lead-acid battery chemical synthesis technology over to battery is carried out formation charging.By this process, the lead oxide of the lead oxide in the coating and the lead oxide in the lead plaster, polar board surface is reduced into lead, and mutual bonding formation network, greatly strengthened the cementability between coating and pole plate, the lead plaster surface.Simultaneously, after pole plate enters electrolyte, partial oxidation lead and sulfuric acid reaction, produce a certain amount of free lead ion, be adsorbed to hole and activated carbon surface in the active carbon, be reduced simultaneously the hole and the activated carbon surface that deposit in the active carbon, formed good liberation of hydrogen and suppressed ability.
Another embodiment will be coated in by the lead plaster that prior art is made pole plate (grid) surface first, be cured according to the technique of existing polar plate solidification, and the pole plate (grid) that solidifies after complete dewaters through overbaking again.Then with step 1, the plumbous charcoal mixed slurry made, be coated in the surface through the lead plaster of the pole plate of super-dry.80 ℃ of lower bakings 10 hours, push with hydraulic press again, pressure is in 0.2 MPa.The pole plate that is disposed is assembled according to the storage battery assembly technology, and inject the sulfuric acid solution of 1.30g/L, leave standstill 4 and as a child charge, electric current is 0.1C, charges 2 hours.Then change normal lead-acid battery chemical synthesis technology over to battery is carried out formation charging.
The above is the preferred embodiments of technical solution of the present invention only, is not for limiting protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a plumbous carbon mixture is characterized in that, is prepared by the percentage by weight of following material:
Carbon mixture: 20% ~ 80%, lead powder: 20% ~ 80%;
Wherein, described carbon mixture is prepared by the percentage by weight of following material:
Active carbon: 10% ~ 80%, conduction Carbon Materials: 10 ~ 50%, bonding agent: 5% ~ 50%, fiber: 0.1% ~ 1%.
2. plumbous carbon mixture as claimed in claim 1 is characterized in that, described bonding agent comprises: gather a kind of of inclined to one side tetrafluoroethene, polytetrafluoroethylene and butadiene-styrene rubber; Described fiber is short fiber or various conductive carbon fibre.
3. method that adopts plumbous carbon mixture claimed in claim 1 to make the lead-acid battery pole plate, it comprises the steps:
The mixing of step 1, plumbous carbon mixture and solvent
Weigh in proportion the raw material of plumbous carbon mixture: lead powder, active carbon, conduction Carbon Materials, bonding agent, fiber weigh percentage by weight and are 30% ~ 50% plumbous carbon mixture, percentage by weight and be 50% ~ 70% solvent again; First active carbon, conduction Carbon Materials, bonding agent, fiber and solvent are dropped in the mixer, mix with 1000 rev/mins of rotating speeds, mixed one hour, add again lead powder and proceeded to stir one hour, make plumbous charcoal mixed slurry;
The coating of step 2, plumbous charcoal mixed slurry and typing
Plumbous charcoal mixed slurry is coated in the battery pole plates surface, after pole plate is placed 40 ℃ ~ 120 ℃ baking oven, after dry tack free, take out and carry out roll-in, the pressure of roll-in is 0.1 ~ 1 MPa;
Or
The lead plaster that will prepare first is coated in the battery pole plates surface, rear pole plate is cured, toasts and dewater; After with described plumbous charcoal mixed slurry, be coated in the surface of the lead plaster layer of pole plate, pole plate is placed 40 ℃ ~ 120 ℃ baking oven, after dry tack free, take out and carry out roll-in, the pressure of roll-in is 0.1 ~ 1 MPa.
4. method as claimed in claim 3 is characterized in that, described solvent is: deionized water, acetone, absolute ethyl alcohol, 1-METHYLPYRROLIDONE a kind of.
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| CN201310015058.9A CN103078083B (en) | 2013-01-16 | 2013-01-16 | Lead and carbon mixture and method for manufacturing lead-acid battery electrode plate |
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| CN201310015058.9A CN103078083B (en) | 2013-01-16 | 2013-01-16 | Lead and carbon mixture and method for manufacturing lead-acid battery electrode plate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103618114A (en) * | 2013-12-16 | 2014-03-05 | 中国船舶重工集团公司第七一二研究所 | Lead-acid battery and manufacturing method of negative plate thereof |
| CN105140466A (en) * | 2015-07-17 | 2015-12-09 | 浙江南都电源动力股份有限公司 | Lead-carbon battery negative plate |
| CN105489887A (en) * | 2015-11-05 | 2016-04-13 | 中国电力科学研究院 | Negative lead paste for lead-carbon battery |
| CN105845898A (en) * | 2016-04-01 | 2016-08-10 | 中国电力科学研究院 | Lead-carbon battery negative plate and preparation method therefor |
| CN107611353A (en) * | 2017-09-26 | 2018-01-19 | 安徽轰达电源有限公司 | A kind of accumulator plate and its preparation technology |
| TWI679795B (en) * | 2018-06-22 | 2019-12-11 | 楊玉琳 | Electrode plate and preparation method thereof |
| CN112640153A (en) * | 2018-05-07 | 2021-04-09 | 提卜斯研发有限公司 | Method of forming carbon-based active layer for anode of lead-carbon battery and active layer formed thereby |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074702A (en) * | 2010-12-28 | 2011-05-25 | 株洲冶炼集团股份有限公司 | Lead-carbon composite material |
| WO2012083358A1 (en) * | 2010-12-21 | 2012-06-28 | Commonwealth Scientific And Industrial Research Organisation | Electrode and electrical storage device for lead-acid system |
| CN102677093A (en) * | 2012-05-30 | 2012-09-19 | 合肥工业大学 | Lead dioxide powder porous electrode and preparation method thereof |
-
2013
- 2013-01-16 CN CN201310015058.9A patent/CN103078083B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012083358A1 (en) * | 2010-12-21 | 2012-06-28 | Commonwealth Scientific And Industrial Research Organisation | Electrode and electrical storage device for lead-acid system |
| CN102074702A (en) * | 2010-12-28 | 2011-05-25 | 株洲冶炼集团股份有限公司 | Lead-carbon composite material |
| CN102677093A (en) * | 2012-05-30 | 2012-09-19 | 合肥工业大学 | Lead dioxide powder porous electrode and preparation method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103618114A (en) * | 2013-12-16 | 2014-03-05 | 中国船舶重工集团公司第七一二研究所 | Lead-acid battery and manufacturing method of negative plate thereof |
| CN105140466A (en) * | 2015-07-17 | 2015-12-09 | 浙江南都电源动力股份有限公司 | Lead-carbon battery negative plate |
| CN105140466B (en) * | 2015-07-17 | 2018-05-08 | 浙江南都电源动力股份有限公司 | A kind of lead carbon battery negative plate |
| CN105489887A (en) * | 2015-11-05 | 2016-04-13 | 中国电力科学研究院 | Negative lead paste for lead-carbon battery |
| CN105489887B (en) * | 2015-11-05 | 2020-07-24 | 中国电力科学研究院 | Negative lead paste of lead-carbon battery |
| CN105845898A (en) * | 2016-04-01 | 2016-08-10 | 中国电力科学研究院 | Lead-carbon battery negative plate and preparation method therefor |
| CN107611353A (en) * | 2017-09-26 | 2018-01-19 | 安徽轰达电源有限公司 | A kind of accumulator plate and its preparation technology |
| CN112640153A (en) * | 2018-05-07 | 2021-04-09 | 提卜斯研发有限公司 | Method of forming carbon-based active layer for anode of lead-carbon battery and active layer formed thereby |
| TWI679795B (en) * | 2018-06-22 | 2019-12-11 | 楊玉琳 | Electrode plate and preparation method thereof |
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| CN103078083B (en) | 2015-01-07 |
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Effective date of registration: 20220223 Address after: 431800 Jingshan Economic Development Zone, Jingmen City, Hubei Province Patentee after: HUBEI CENTER POWER TECH CO.,LTD. Address before: Dapeng town Longgang District of Shenzhen City, Guangdong province 518000 with ambitious science and Technology Park rich industrial zone Patentee before: SHENZHEN CENTER POWER TECH. Co.,Ltd. |