CN103531850A - Electrolyte of lead-acid storage battery - Google Patents
Electrolyte of lead-acid storage battery Download PDFInfo
- Publication number
- CN103531850A CN103531850A CN201310435582.1A CN201310435582A CN103531850A CN 103531850 A CN103531850 A CN 103531850A CN 201310435582 A CN201310435582 A CN 201310435582A CN 103531850 A CN103531850 A CN 103531850A
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- Prior art keywords
- lead
- electrolyte
- acid
- battery
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
- H01M10/08—Selection of materials as electrolytes
-
- 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 an electrolyte of a lead-acid storage battery. The electrolyte comprises the following components in percentage by weight of 35-40 percent of sulfuric acid, 0.5-2 percent of sodium sulfate, 0.1-5 percent of polyaspartic acid, 0.05-1 percent of stannous mono-sulphate and the balance of water. The polyaspartic acid and the stannous mono-sulphate are mixed according to a certain proportion to be used as a sulfuric acid electrolyte additive; and through an absorption function of the polyaspartic acid and the function of of tin and lead serving as isomorphism crystals, the electrochemical performance of the battery is improved and the cycle service life of the battery is prolonged. According to the storage battery made from the electrolyte, the primary capacity, the charge receiving capacity, the cycle service life and the like of the battery are improved to a certain degree.
Description
Technical field
The invention belongs to Lead-acid Battery Technology field, relate to a kind of lead-acid accumulator electrolyte.
Background technology
Up to the present, lead acid accumulator is still very extensive in the application of automobile and other energy field.Although it has obtained significant progress in performance and design, lead acid accumulator still has some problems to need to solve, and comprises and improves aspects such as continuing battery capacity, low temperature performance, prolongation cycle life.Lead acid accumulator exists the caused electrode surface passivation of negative pole sulfation always, and electrolyte lags behind to the diffusion in electrode micropore, and the lead sulfate that nexine active material is not yet utilized be generated covers and causes.The lead button forming after charging is larger, and intergranular structure is tight, and intergranular space is few, and just like long nadel as passage, battery cycle life early stage, the amplitude that discharge capacity of the cell declines with the increase of cycle-index is less; Along with the increase of cycle-index, the difference between each cell discharge performance is obvious gradually.To the battery cycle life later stage, capacity declines to a great extent, the discharge capacity of battery and cycle life while having had a strong impact on heavy-current discharge.
In lead acid accumulator, using electrolysis additive is to improve one of battery performance main path, selects suitable electrolysis additive, is to improve battery performance requirement on the one hand, improves high-rate battery discharge capacity and cycle life; Also be the market application needs that expand the vehicles such as power assist vehicle on the other hand.
Summary of the invention
Technical problem to be solved by this invention is just to provide a kind of lead-acid accumulator electrolyte, adopts poly-aspartic-acid to mix by a certain percentage as sulfuric acid electrolyte additive with stannous sulfate; Suction-operated by poly-aspartic-acid and tin and lead are the effect of isomorphism crystal, improve battery performance and improve circulating battery useful life.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of lead-acid accumulator electrolyte, comprise following component, and each weight percentages of components is:
Compared with prior art, lead-acid accumulator electrolyte of the present invention, except containing aqueous sulfuric acid, sodium sulphate, also adds poly-aspartic-acid and stannous sulfate.Aqueous sulfuric acid proportion in formula is 1.26g/cm
3(1.03～1.3g/cm
3).
The poly-aspartic-acid adding is yellow powder, and content >=93% is soluble in water, stable chemical nature.
Poly-aspartic-acid is a kind of artificial synthetic water-soluble high-molecular substance, is amphiphilic adsorbent, and lead sulfate is had to good dispersing and disintegrating effect.When lead acid storage battery tank discharge, the active material on positive/negative plate is converted into lead sulfate crystallization, newly-generated in lead sulfate crystallization meeting constantly growth on the preferential nucleus generating.Add poly-aspartic-acid can on lead sulfate crystal, form absorption, stop lead sulfate crystal to be grown up, along with new lead sulfate nucleus constantly generates, form tiny lead sulfate crystal, be conducive to the diffusion in sulfuric acid electrolyte active material, the active matter quality of participating in electrochemical reaction is increased, thereby improve battery capacity, improve charge acceptance, improve circulating battery useful life.
Stannous sulfate used is white crystalline powder, is dissolved in dilute sulfuric acid.
Adding of stannous sulfate, at charge and discharge process, can occur between electrolyte and active material and shift, under larger multiplying power discharging condition, on the one hand by its solution transfer, increase electrode porosity and improve electrode discharge performance, on the other hand, the stannous sulfate in positive pole is easily oxidized to and β-PbO in charging process
2with the SnO with Buddha's warrior attendant three stone structures
2, improved electronic conductance between discharging product cover layer and grid and conductivity and the structure of active material particle, thereby improved more significantly electrode active material utilance.Its effect in electrolyte is to have accelerated mass transfer in liquid phase process, effectively improves the conductive capability of the final ion of electric discharge, is conducive to the further utilization of active material and the increase of battery capacity.
Preferably, each weight percentages of components is:
Preferably, each weight percentages of components is:
Preferably, each weight percentages of components is:
Preferably, each weight percentages of components is:
Preferably, the mass percent concentration of described sulfuric acid is 45%.
Compared with prior art, advantage of the present invention is: adopt poly-aspartic-acid to mix by a certain percentage as sulfuric acid electrolyte additive with stannous sulfate; Suction-operated by poly-aspartic-acid and tin and lead are the effect of isomorphism crystal, improve battery performance and improve circulating battery useful life.The storage battery that uses the electrolyte of this formula to make, the initial capacity of battery, charge acceptance and service life cycle etc. are all improved to some extent.
Below in conjunction with embodiment, the invention will be further described:
Embodiment
A kind of lead-acid accumulator electrolyte embodiment 1 of the present invention, comprises following component, and each weight percentages of components is:
A kind of lead-acid accumulator electrolyte embodiment 2 of the present invention, comprises following component, and each weight percentages of components is:
A kind of lead-acid accumulator electrolyte embodiment 3 of the present invention, comprises following component, and each weight percentages of components is:
A kind of lead-acid accumulator electrolyte embodiment 4 of the present invention, comprises following component, and each weight percentages of components is:
The poly-aspartic-acid adding is yellow powder, and content >=93% is soluble in water, stable chemical nature.
Poly-aspartic-acid is a kind of artificial synthetic water-soluble high-molecular substance, is amphiphilic adsorbent, and lead sulfate is had to good dispersing and disintegrating effect.When lead acid storage battery tank discharge, the active material on positive/negative plate is converted into lead sulfate crystallization, newly-generated in lead sulfate crystallization meeting constantly growth on the preferential nucleus generating.Add poly-aspartic-acid can on lead sulfate crystal, form absorption, stop lead sulfate crystal to be grown up, along with new lead sulfate nucleus constantly generates, form tiny lead sulfate crystal, be conducive to the diffusion in sulfuric acid electrolyte active material, the active matter quality of participating in electrochemical reaction is increased, thereby improve battery capacity, improve charge acceptance, improve circulating battery useful life.
Stannous sulfate used is white crystalline powder, is dissolved in dilute sulfuric acid.
Adding of stannous sulfate, at charge and discharge process, can occur between electrolyte and active material and shift, under larger multiplying power discharging condition, on the one hand by its solution transfer, increase electrode porosity and improve electrode discharge performance, on the other hand, the stannous sulfate in positive pole is easily oxidized to and β-PbO in charging process
2with the SnO with Buddha's warrior attendant three stone structures
2, improved electronic conductance between discharging product cover layer and grid and conductivity and the structure of active material particle, thereby improved more significantly electrode active material utilance.Its effect in electrolyte is to have accelerated mass transfer in liquid phase process, effectively improves the conductive capability of the final ion of electric discharge, is conducive to the further utilization of active material and the increase of battery capacity.
Formula according to above embodiment 1 to 4 is made lead-acid accumulator electrolyte, after being assembled into 12V12Ah battery, test, and contrast with existing lead acid accumulator, battery initial capacity of the present invention, charge acceptance and service life cycle etc. all improve 20～30%, effect is quite remarkable, has revolutionary significance.
The foregoing is only specific embodiments of the invention, but technical characterictic of the present invention is not limited to this, any those skilled in the art is in the field of the invention, and the variation of doing or modification are all encompassed among the scope of the claims of the present invention.
Claims (6)
1. a lead-acid accumulator electrolyte, is characterized in that: comprise following component, each weight percentages of components is:
2. a kind of lead-acid accumulator electrolyte as claimed in claim 1, is characterized in that: comprise following component, each weight percentages of components is:
3. a kind of lead-acid accumulator electrolyte as claimed in claim 1, is characterized in that: comprise following component, each weight percentages of components is:
4. a kind of lead-acid accumulator electrolyte as claimed in claim 1, is characterized in that: comprise following component, each weight percentages of components is:
5. a kind of lead-acid accumulator electrolyte as claimed in claim 1, is characterized in that: comprise following component, each weight percentages of components is:
6. a kind of lead-acid accumulator electrolyte as described in claim 1 to 5 any one, is characterized in that: the mass percent concentration of described sulfuric acid is 45%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310435582.1A CN103531850A (en) | 2013-09-23 | 2013-09-23 | Electrolyte of lead-acid storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310435582.1A CN103531850A (en) | 2013-09-23 | 2013-09-23 | Electrolyte of lead-acid storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103531850A true CN103531850A (en) | 2014-01-22 |
Family
ID=49933674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310435582.1A Pending CN103531850A (en) | 2013-09-23 | 2013-09-23 | Electrolyte of lead-acid storage battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064816A (en) * | 2014-05-14 | 2014-09-24 | 超威电源有限公司 | Electrolyte additive for hydrogen evolution suppression of lead-acid storage battery and preparation method for electrolyte additive |
| CN104766999A (en) * | 2015-02-13 | 2015-07-08 | 超威电源有限公司 | Lead-acid storage battery used in low temperature environment |
| CN106816643A (en) * | 2017-03-23 | 2017-06-09 | 福建省闽华电源股份有限公司 | A kind of lead-acid battery electrolyte containing betaine type amphoteric surfactant |
| CN113555611A (en) * | 2021-06-30 | 2021-10-26 | 河南超威电源有限公司 | Nano-colloid electrolyte for lead-acid battery and preparation method thereof |
| CN114256465A (en) * | 2021-11-11 | 2022-03-29 | 安徽力普拉斯电源技术有限公司 | Storage battery with high-current discharge and low heat loss |
Citations (5)
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|---|---|---|---|---|
| US5738596A (en) * | 1996-02-12 | 1998-04-14 | Prince Sports Group, Inc. | Iron-type golf clubhead |
| CN101499536A (en) * | 2008-12-05 | 2009-08-05 | 晋江华威电源有限公司 | Auxiliary additive for gelled-electrolyte |
| CN102593533A (en) * | 2012-03-15 | 2012-07-18 | 超威电源有限公司 | Method for internalizing valve-regulated lead acid storage battery |
| CN103199308A (en) * | 2013-03-25 | 2013-07-10 | 超威电源有限公司 | Gel feeding process of AGM (Glass Fiber Separator) storage battery |
| CN103296318A (en) * | 2013-05-30 | 2013-09-11 | 江西新威动力能源科技有限公司 | Lead-acid storage battery quantitative closed intermittent container formation device and process |
-
2013
- 2013-09-23 CN CN201310435582.1A patent/CN103531850A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5738596A (en) * | 1996-02-12 | 1998-04-14 | Prince Sports Group, Inc. | Iron-type golf clubhead |
| CN101499536A (en) * | 2008-12-05 | 2009-08-05 | 晋江华威电源有限公司 | Auxiliary additive for gelled-electrolyte |
| CN102593533A (en) * | 2012-03-15 | 2012-07-18 | 超威电源有限公司 | Method for internalizing valve-regulated lead acid storage battery |
| CN103199308A (en) * | 2013-03-25 | 2013-07-10 | 超威电源有限公司 | Gel feeding process of AGM (Glass Fiber Separator) storage battery |
| CN103296318A (en) * | 2013-05-30 | 2013-09-11 | 江西新威动力能源科技有限公司 | Lead-acid storage battery quantitative closed intermittent container formation device and process |
Non-Patent Citations (2)
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|---|
| G. PETKOVA等: "Influence of polymer additive on the performance of lead-acid battery negative plates", 《JOURNAL OF POWER SOURCES》 * |
| 贾旭平: "第八届国际铅酸电池会议", 《电源技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064816A (en) * | 2014-05-14 | 2014-09-24 | 超威电源有限公司 | Electrolyte additive for hydrogen evolution suppression of lead-acid storage battery and preparation method for electrolyte additive |
| CN104064816B (en) * | 2014-05-14 | 2016-10-05 | 超威电源有限公司 | A kind of electrolysis additive of lead-acid accumulator suppression liberation of hydrogen and preparation method thereof |
| CN104766999A (en) * | 2015-02-13 | 2015-07-08 | 超威电源有限公司 | Lead-acid storage battery used in low temperature environment |
| CN106816643A (en) * | 2017-03-23 | 2017-06-09 | 福建省闽华电源股份有限公司 | A kind of lead-acid battery electrolyte containing betaine type amphoteric surfactant |
| CN113555611A (en) * | 2021-06-30 | 2021-10-26 | 河南超威电源有限公司 | Nano-colloid electrolyte for lead-acid battery and preparation method thereof |
| CN114256465A (en) * | 2021-11-11 | 2022-03-29 | 安徽力普拉斯电源技术有限公司 | Storage battery with high-current discharge and low heat loss |
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Application publication date: 20140122 |