CN100362688C - Method for reducing power type columnar sealed zinc-nickel alkaline accumulator internal pressure - Google Patents
Method for reducing power type columnar sealed zinc-nickel alkaline accumulator internal pressure Download PDFInfo
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- CN100362688C CN100362688C CNB2005100512477A CN200510051247A CN100362688C CN 100362688 C CN100362688 C CN 100362688C CN B2005100512477 A CNB2005100512477 A CN B2005100512477A CN 200510051247 A CN200510051247 A CN 200510051247A CN 100362688 C CN100362688 C CN 100362688C
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- active carbon
- zinc
- graphite
- nickel
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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
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Abstract
The present invention relates to a method for reducing internal pressure of a power type column sealed zinc, nickel and alkaline accumulator. The present invention is characterized in that water solution of 0.5% to 5% of sodium polyacrylate is used for making colloidal graphite or activated carbon milk after superfine graphite or activated carbon is processed, and then, the colloidal graphite or the activated carbon milk is coated at the surface of a zinc cathode, and the power type column sealed zinc nickel and alkaline accumulator is formed by that a corresponding nickel electrode and a diaphragm are assembled after the surface of the zinc cathode is parched. The accumulator is made according to the method of the present invention, the phenomena of steam leakage and liquid leakage are not found through that the accumulator is charged and discharged with different multiplying rate and through the lifetime circulations for more than 100 times. The method of the present invention has the advantages of simpleness, convenience and low cost.
Description
Technical field
The present invention relates to the alkaline battery technical field, more particularly, is a kind of method that reduces power type columnar sealed zinc-nickel alkaline accumulator internal pressure.
Background technology
The dynamic column sealed Zn-Ni alkaline battery sealing problem is insoluble key problem in technology, its reason be because zinc-nickel cell in charge and discharge cycles with deposit the generation that usually is accompanied by hydrogen and oxygen in the process, if do not take measures and to cause the rising of accumulator internal pressure, produce inflatable and burst (" power technology " 2004,24 (3), 178-180; " battery " 2002,32 (6), 361-364).
Dynamic column sealed Zn-Ni alkaline battery produces hydrogen and oxygen has four reaction equations:
Charging follows following formula to take place on nickel electrode latter stage:
4OH--4e→H
2O+O
2↑ (1)
Nickel electrode is at the NiO of charging generation in latter stage simultaneously
2Decompose:
2NiO
2+H
2O→2NiOOH+1/2O
2↑ (2)
If the imbalance of charging both positive and negative polarity Capacity Ratio in latter stage, following reaction takes place in negative pole:
2H
2O+2e→2OH
-+H
2?↑ (3)
The zinc electrode of Charging state is in depositing process, and zinc self-dissolving in alkali produces hydrogen:
Zn+2OH+H
2O→2Zn(OH)
4 2-+H
2?↑ (4)
Dynamic column sealed Zn-Ni alkaline battery is at the O of charging generation in latter stage
2[above-mentioned reaction equation (1) (2)] can see through barrier film to the zinc negative pole, though also can be absorbed by the spongiform metallic zinc that the charging of zinc negative pole produces as reaction equation (5):
Zn+1/2O
2→ZnO (5)
But the spongiform cadmium metal of charging product that the speed that absorbs can not show a candle on the cadmium electrode of ickel-cadmium cell absorbs O
2Fast like that.Must on zinc electrode, add catalyst and impel carrying out fast of reaction equation (5).
Summary of the invention
The objective of the invention is by method at zinc electrode surface sprayed coating one deck aquadag or active carbon breast, impel carrying out fast of above-mentioned (5) formula, the oxygen that (1) (2) two formulas are produced can be absorbed by metallic zinc rapidly, has solved the problem that power type columnar sealed zinc-nickel alkaline accumulator internal pressure raises.
Method of the present invention may further comprise the steps:
(1) selects the graphite or the active carbon of 16 microns of grain finenesses, in weight concentration is to soak 24-48 hour under the room temperature in the HCL solution of 5-10%, make impurity particularly dissolved ferric iron in hydrochloric acid, in immersion process, often stir, after soaking end, outwell hydrochloric acid, with deionized water flush away graphite or the residual hydrochloric acid of activated carbon surface, being washed till its pH value is 7, again at 60-70 ℃ of oven dry, crushing screening;
(2) be in the aqueous solution of Sodium Polyacrylate of 0.5-5% in weight concentration, slowly add graphite or active carbon that step (1) is handled well, stir and be aquadag or active carbon breast, the weight ratio of described polyacrylic acid sodium water solution and graphite or active carbon is 100: 2-15;
(3) aquadag for preparing in step (2) or active carbon Ruzhong add 95% industrial alcohol, mix, evenly be sprayed on the zinc negative terminal surface with sprayer, its thickness is the 0.5-2 micron, be ptfe emulsion (ptfe emulsion with 60% adds the water preparation) spray one deck of 2-15% again with weight concentration after drying, its thickness is the 0.3-1 micron, can make dynamic column sealed Zn-Ni alkaline battery with corresponding nickel electrode and barrier film assembling after the oven dry, the volume ratio of the industrial alcohol of described aquadag or active carbon breast and 95% is 1: 1-5, described ptfe emulsion is that ptfe emulsion (Shanghai Sanaifu New Material Co., Ltd produces, and the trade mark the is FR301B) adding distil water with 60% is formulated.
Advantage of the present invention:
The present invention adopts the method at zinc electrode surface sprayed coating one deck aquadag or active carbon breast, has quickened the O of dynamic column sealed Zn-Ni alkaline battery inside
2Compound rapidly with metallic zinc reduced the interior pressure of storage battery, provides a kind of easy, approach that cost is low for producing dynamic column sealed Zn-Ni alkaline battery.The column sealed Zn-Ni alkaline battery of making by the inventive method passes through discharging and recharging of different multiplying and more than 100 life-span circulation, and none leaks vapour phenomenon of leakage.
Embodiment
Further specify characteristics of the present invention below by instantiation
Embodiment 1
Select the graphite of grain fineness 2-4 micron, be immersed in 5% the hydrochloric acid solution 25 hours taking-up under the room temperature, being washed till pH value with deionized water is 7, again 65 ± 5 ℃ of oven dry, crushing screenings down in baking oven.Take by weighing the 1g Sodium Polyacrylate, add water 99g and be made into 1% polyacrylic acid sodium water solution, add the graphite of the above-mentioned processing of 8g, stir, add 95% industrial alcohol 100ml again and mix, obtain aquadag; Sprayed coating is on the zinc electrode surface equably with aquadag with sprayer at last, and its thickness is 1 micron, the ptfe emulsion of sprayed coating one deck 5% again after the oven dry, and its thickness is 0.5 micron, oven dry forms the zinc negative plate once more.Be assembled into dynamic column sealed Zn-Ni alkaline battery through the discharging and recharging and more than 100 life-span circulation of different multiplying with this zinc negative plate and nickel electrode and barrier film, find to leak the vapour phenomenon of leakage (seeing Table 1).
Embodiment 2
Select the active carbon of 4-6 micron, be immersed under room temperature in 8% the hydrochloric acid solution, take out after 35 hours, being washed till pH value with deionized water is 7, again at 65 ± 5 ℃ of oven dry, crushing screenings down; Take by weighing 1.5 Sodium Polyacrylates, add water 98.5g and be made into 1.5% polyacrylic acid sodium water solution, add the above-mentioned processed active carbon of 8g, stir, add 95% industrial alcohol 200ml again and mix, obtain the active carbon breast, sprayed coating is on the zinc electrode surface equably with the active carbon breast with sprayer at last, and its thickness is 1 micron, the ptfe emulsion of sprayed coating one deck 10% again after the oven dry, thickness is 1 micron, and oven dry forms the zinc negative plate once more.The dynamic column sealed Zn-Ni alkaline battery made from this zinc negative plate circulated through more than 100 life-span that discharge and recharge of different multiplying, found to leak the vapour phenomenon of leakage (seeing Table 2).
Table 1
Table 2
Claims (1)
1. method that reduces power type columnar sealed zinc-nickel alkaline accumulator internal pressure, it is characterized in that adopting following technical process: (1) selects the graphite or the active carbon of grain fineness 1-6 micron, in weight concentration is to soak 24-48 hour under the room temperature in the HCL solution of 5-10%, make dissolved ferric iron in hydrochloric acid, in immersion process, often stir, after soaking end, outwell hydrochloric acid, with deionized water flush away graphite or the residual hydrochloric acid of activated carbon surface, being washed till its pH value is 7, again at 60-70 ℃ of oven dry, crushing screening;
(2) be in the aqueous solution of Sodium Polyacrylate of 0.5-5% in weight concentration, slowly add graphite or active carbon that step (1) is handled well, stir and be aquadag or active carbon breast, the weight ratio of described polyacrylic acid sodium water solution and graphite or active carbon is 100: 2-15;
(3) aquadag for preparing in step (2) or active carbon Ruzhong add 95% industrial alcohol, mix, evenly be sprayed on the zinc negative terminal surface with sprayer, its thickness is the 0.5-2 micron, be ptfe emulsion spray one deck of 2-15% again with weight concentration after drying, its thickness is the 0.3-1 micron, can make dynamic column sealed Zn-Ni alkaline battery with corresponding nickel electrode and barrier film assembling after the oven dry, the volume ratio of the industrial alcohol of described aquadag or active carbon breast and 95% is 1: 1-5, described ptfe emulsion are formulated with 60% ptfe emulsion adding distil water.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100512477A CN100362688C (en) | 2005-03-03 | 2005-03-03 | Method for reducing power type columnar sealed zinc-nickel alkaline accumulator internal pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100512477A CN100362688C (en) | 2005-03-03 | 2005-03-03 | Method for reducing power type columnar sealed zinc-nickel alkaline accumulator internal pressure |
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| Publication Number | Publication Date |
|---|---|
| CN1828993A CN1828993A (en) | 2006-09-06 |
| CN100362688C true CN100362688C (en) | 2008-01-16 |
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| CNB2005100512477A Expired - Fee Related CN100362688C (en) | 2005-03-03 | 2005-03-03 | Method for reducing power type columnar sealed zinc-nickel alkaline accumulator internal pressure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449827C (en) * | 2007-06-21 | 2009-01-07 | 江苏奇能电池有限公司 | Making method of alkalescent accumulator anode and cathode board |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002367613A (en) * | 2001-04-03 | 2002-12-20 | Hitachi Ltd | Lead storage battery |
| CN1396669A (en) * | 2002-09-03 | 2003-02-12 | 南开大学 | Zinc electrode material for secondary battery using Zn as negative electrode and its preparing process |
| CN1467868A (en) * | 2002-07-08 | 2004-01-14 | 比亚迪股份有限公司 | Preparation method of cathode active material of zinc-nickel battery |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002367613A (en) * | 2001-04-03 | 2002-12-20 | Hitachi Ltd | Lead storage battery |
| CN1467868A (en) * | 2002-07-08 | 2004-01-14 | 比亚迪股份有限公司 | Preparation method of cathode active material of zinc-nickel battery |
| CN1396669A (en) * | 2002-09-03 | 2003-02-12 | 南开大学 | Zinc electrode material for secondary battery using Zn as negative electrode and its preparing process |
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| CN1828993A (en) | 2006-09-06 |
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