CN113782822A - Electrolyte for long-life colloid storage battery and preparation method thereof - Google Patents
Electrolyte for long-life colloid storage battery and preparation method thereof Download PDFInfo
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- CN113782822A CN113782822A CN202110907221.7A CN202110907221A CN113782822A CN 113782822 A CN113782822 A CN 113782822A CN 202110907221 A CN202110907221 A CN 202110907221A CN 113782822 A CN113782822 A CN 113782822A
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- electrolyte
- sulfate
- sulfuric acid
- acid solution
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 31
- 239000000084 colloidal system Substances 0.000 title claims abstract description 26
- 238000003860 storage Methods 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 50
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 47
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 32
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 21
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 16
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 16
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 16
- INHCSSUBVCNVSK-UHFFFAOYSA-L lithium sulfate Inorganic materials [Li+].[Li+].[O-]S([O-])(=O)=O INHCSSUBVCNVSK-UHFFFAOYSA-L 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 16
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 16
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims abstract description 16
- 229910052939 potassium sulfate Inorganic materials 0.000 claims abstract description 16
- 235000011151 potassium sulphates Nutrition 0.000 claims abstract description 16
- RCIVOBGSMSSVTR-UHFFFAOYSA-L stannous sulfate Chemical compound [SnH2+2].[O-]S([O-])(=O)=O RCIVOBGSMSSVTR-UHFFFAOYSA-L 0.000 claims abstract description 16
- RBTVSNLYYIMMKS-UHFFFAOYSA-N tert-butyl 3-aminoazetidine-1-carboxylate;hydrochloride Chemical compound Cl.CC(C)(C)OC(=O)N1CC(N)C1 RBTVSNLYYIMMKS-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910000375 tin(II) sulfate Inorganic materials 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims description 25
- 239000002245 particle Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 238000005303 weighing Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 abstract description 2
- 235000011187 glycerol Nutrition 0.000 description 12
- 239000000499 gel Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
Classifications
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
- H01M10/0562—Solid materials
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0085—Immobilising or gelification of electrolyte
-
- 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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- Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides an electrolyte for a long-life colloid storage battery, which consists of 4-6.5% of fumed silica, 35-45% of sulfuric acid solution, 0.5-1% of anhydrous sodium sulfate, potassium sulfate and lithium sulfate mixture, 0.5-1.5% of phosphoric acid, 0.05-0.15% of polyvinyl alcohol, 0.05-0.15% of glycerol, 0.05-0.15% of stannous sulfate and pure water by mass fraction. The invention has the advantages that the prepared colloid electrolyte has high crosslinking degree and good stability, and simultaneously has stronger thixotropy and rheological property, and compared with the common colloid battery, the battery prepared by the colloid electrolyte has low self-discharge, strong high and low temperature resistance, high capacity and excellent deep cycle performance.
Description
Technical Field
The invention relates to the technical field of colloid storage batteries, in particular to electrolyte for a long-life colloid storage battery and a preparation method thereof.
Background
In the case of a gel-sealed lead-acid battery, the silica gel molecules within the battery are connected to each other to form a three-dimensional porous network-like skeleton structure, which houses the electrolyte therein. After the electrolyte is filled into the battery, gel reaction can continuously occur in the charging process, at the moment, the framework is further dehydrated and contracted, so that cracks are formed in the system and penetrate between the positive plate and the negative plate, and a channel reaching the negative electrode is provided for oxygen separated out from the positive electrode, thereby realizing cathode absorption. Compared with the traditional storage battery, the colloid battery has the characteristics of strong high and low temperature resistance, low self-discharge, long cycle life and wide application environment range.
The electrolyte preparation process is one of core processes for manufacturing the gel battery, and the currently prepared gel still has the problems of hydration delamination in different degrees, poor thixotropic property, weak rheological property and low capacity.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an electrolyte for a long-life colloid storage battery and a preparation method thereof.
The invention solves the technical problems through the following technical means:
the electrolyte for the long-life colloid storage battery consists of 4 to 6.5 mass percent of fumed silica, 35 to 45 mass percent of sulfuric acid solution, 0.5 to 1 mass percent of anhydrous sodium sulfate, potassium sulfate and lithium sulfate mixture, 0.5 to 1.5 mass percent of phosphoric acid, 0.05 to 0.15 mass percent of polyvinyl alcohol, 0.05 to 0.15 mass percent of glycerol, 0.05 to 0.15 mass percent of stannous sulfate and pure water.
Preferably, the fumed silica particles have a specific surface area of 200m2Per g, and the particle diameter requires D50≤60nm,Dmax≤120nm。
Preferably, the temperature of the sulfuric acid solution is less than 10 ℃, and the density of the sulfuric acid solution is 1.290-1.320 g/cm3In the meantime.
A preparation method of electrolyte for a long-life colloid storage battery comprises the following steps:
s1, confirming the temperature and density of the sulfuric acid solution required by the formula: the temperature is less than 10 ℃, and the density is 1.290-1.320 g/cm3To (c) to (d);
s2, calculating and weighing the required amounts of fumed silica, sulfuric acid solution, anhydrous sodium sulfate, potassium sulfate, lithium sulfate mixture, phosphoric acid, polyvinyl alcohol, glycerol, stannous sulfate and pure water according to the formula proportion of claim 1;
s3, adding the sulfuric acid solution weighed in the step S2, the anhydrous sodium sulfate, the potassium sulfate, the lithium sulfate mixture, the phosphoric acid, the polyvinyl alcohol, the glycerol, the stannous sulfate and the pure water into a stirring kettle, stirring and dissolving, and adding the amount of the fumed silica required by the formula under the stirring state.
Preferably, the rotating speed of the stirring kettle is set to 3000r/min, and the stirring time is 15-30 min.
The invention has the advantages that: the colloid electrolyte prepared by the invention has high crosslinking degree, good stability, and stronger thixotropy and rheological property, and compared with the common colloid battery, the battery prepared by the colloid electrolyte has low self-discharge, strong high and low temperature resistance, high capacity and excellent deep cycle performance.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Preparing an electrolyte for a long-life colloid storage battery, wherein the colloid storage battery comprises the following components in percentage by mass: 4 percent of fumed silica, 35 percent of sulfuric acid solution, 0.5 percent of anhydrous sodium sulfate, potassium sulfate and lithium sulfate mixture, 0.5 percent of phosphoric acid, 0.05 percent of polyvinyl alcohol, 0.05 percent of glycerol, 0.05 percent of stannous sulfate and the balance of pure water. Meanwhile, the particle diameter D of the fumed silica particles used in the present embodiment50=58nm,Dmax110nm, and the density was measured at 10 ℃ in a sulfuric acid solution of 1.300g/cm3。。
Calculating and weighing the components of the materials required by the electrolyte of the colloidal storage battery: 40kg of fumed silica, 350kg of sulfuric acid solution, 5kg of anhydrous sodium sulfate, potassium sulfate and lithium sulfate mixture, 5kg of phosphoric acid, 0.5kg of polyvinyl alcohol, 0.5kg of glycerol, 0.5kg of stannous sulfate and 598.5kg of pure water.
And adding the weighed sulfuric acid solution, the anhydrous sodium sulfate, the potassium sulfate and the lithium sulfate mixture, phosphoric acid, polyvinyl alcohol, glycerol, stannous sulfate and pure water into a stirring kettle, stirring and dissolving, setting the rotating speed of the stirring kettle to be 3000r/min, adding fumed silica required by the formula under the stirring state, and continuously stirring for 15-30 min to obtain the colloidal electrolyte.
Example 2
Preparing an electrolyte for a long-life colloid storage battery, wherein the colloid storage battery comprises the following components in percentage by mass: 6.5 percent of fumed silica, 45 percent of sulfuric acid solution, 1 percent of anhydrous sodium sulfate, potassium sulfate and lithium sulfate mixture, 1.5 percent of phosphoric acid, 0.15 percent of polyvinyl alcohol, 0.15 percent of glycerol, 0.15 percent of stannous sulfate and the balance of pure water. Meanwhile, the particle diameter D of the fumed silica particles used in the present embodiment50=58nm,Dmax110nm, and the density was measured at 10 ℃ in a sulfuric acid solution of 1.300g/cm3。。
Calculating and weighing the components of the materials required by the electrolyte of the colloidal storage battery: 65kg of fumed silica, 450kg of sulfuric acid solution, 10kg of anhydrous sodium sulfate, potassium sulfate and lithium sulfate mixture, 15kg of phosphoric acid, 1.5kg of polyvinyl alcohol, 1.5kg of glycerol, 1.5kg of stannous sulfate and 455.5kg of pure water.
And adding the weighed sulfuric acid solution, the anhydrous sodium sulfate, the potassium sulfate and the lithium sulfate mixture, phosphoric acid, polyvinyl alcohol, glycerol, stannous sulfate and pure water into a stirring kettle, stirring and dissolving, setting the rotating speed of the stirring kettle to be 3000r/min, adding fumed silica required by the formula under the stirring state, and continuously stirring for 15-30 min to obtain the colloidal electrolyte.
Example 3
Preparation of long-life colloid accumulatorThe electrolyte for the battery, wherein the colloid storage battery comprises the following components in percentage by mass: 5.25 percent of fumed silica, 40 percent of sulfuric acid solution, 0.75 percent of anhydrous sodium sulfate, potassium sulfate and lithium sulfate mixture, 1 percent of phosphoric acid, 0.1 percent of polyvinyl alcohol, 0.1 percent of glycerol, 0.1 percent of stannous sulfate and the balance of pure water. Meanwhile, the particle diameter D of the fumed silica particles used in the present embodiment50=58nm,Dmax110nm, and the density was measured at 10 ℃ in a sulfuric acid solution of 1.300g/cm3。。
Calculating and weighing the components of the materials required by the electrolyte of the colloidal storage battery: 52.5kg fumed silica, 400kg sulfuric acid solution, 7.5kg anhydrous sodium sulfate, potassium sulfate, lithium sulfate mixture, 10kg phosphoric acid, 1kg polyvinyl alcohol, 1kg glycerin, 1kg stannous sulfate, 527kg pure water.
And adding the weighed sulfuric acid solution, the anhydrous sodium sulfate, the potassium sulfate and the lithium sulfate mixture, phosphoric acid, polyvinyl alcohol, glycerol, stannous sulfate and pure water into a stirring kettle, stirring and dissolving, setting the rotating speed of the stirring kettle to be 3000r/min, adding fumed silica required by the formula under the stirring state, and continuously stirring for 15-30 min to obtain the colloidal electrolyte.
The colloidal electrolyte prepared in the examples 1, 2 and 3 is poured into a battery (both positive and negative plates are pasted plates), the obtained sample battery is subjected to 25 ℃ normal temperature capacity, -18 ℃ low temperature capacity, capacity preservation rate and 100% DOD cycle life test (firstly, the battery with qualified 10h rate is fully charged, and is discharged to 10.8V/battery in the environment of 25 ℃ at 5.5A, secondly, 14.1V/battery is charged at constant voltage and current limited 8.25A for 16h, thirdly, standing for 2h, fourthly, the steps are repeated until the 10h rate discharge capacity is lower than 44 Ah), and the detection result is compared with the common colloidal battery with the same model as the following result:
the above comparative data show that: the sample battery prepared by the colloidal electrolyte has greatly improved normal temperature capacity, low temperature resistance and cycle service life, and simultaneously has low self-discharge.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. The electrolyte for the long-life colloid storage battery is characterized in that: the electrolyte consists of 4 to 6.5 mass percent of fumed silica, 35 to 45 mass percent of sulfuric acid solution, 0.5 to 1 mass percent of anhydrous sodium sulfate, potassium sulfate and lithium sulfate mixture, 0.5 to 1.5 mass percent of phosphoric acid, 0.05 to 0.15 mass percent of polyvinyl alcohol, 0.05 to 0.15 mass percent of glycerol, 0.05 to 0.15 mass percent of stannous sulfate and pure water.
2. The long-life colloid storage battery electrolyte as set forth in claim 1, wherein: the fumed silica particle ratioArea of 200m2Per g, and the particle diameter requires D50≤60nm,Dmax≤120nm。
3. The long-life colloid storage battery electrolyte as set forth in claim 1, wherein: the temperature of the sulfuric acid solution is less than 10 ℃, and the density of the sulfuric acid solution is 1.290-1.320 g/cm3In the meantime.
4. The method for producing an electrolyte for a long-life colloid secondary battery as claimed in claim 1, wherein: the method comprises the following steps:
s1, confirming the temperature and density of the sulfuric acid solution required by the formula: the temperature is less than 10 ℃, and the density is 1.290-1.320 g/cm3To (c) to (d);
s2, calculating and weighing the required amounts of fumed silica, sulfuric acid solution, anhydrous sodium sulfate, potassium sulfate, lithium sulfate mixture, phosphoric acid, polyvinyl alcohol, glycerol, stannous sulfate and pure water according to the formula proportion of claim 1;
s3, adding the sulfuric acid solution weighed in the step S2, the anhydrous sodium sulfate, the potassium sulfate, the lithium sulfate mixture, the phosphoric acid, the polyvinyl alcohol, the glycerol, the stannous sulfate and the pure water into a stirring kettle, stirring and dissolving, and adding the amount of the fumed silica required by the formula under the stirring state.
5. The method for producing an electrolyte for a long-life colloid secondary battery as claimed in claim 4, wherein: the rotating speed of the stirring kettle is set to 3000r/min, and the stirring time is 15-30 min.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2817056C1 (en) * | 2023-11-21 | 2024-04-09 | Акционерное общество "Северный пресс" (АО "Северный пресс") | Method of producing gel electrolyte based on polyvinyl alcohol |
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2021
- 2021-08-09 CN CN202110907221.7A patent/CN113782822A/en active Pending
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KR20030049115A (en) * | 2001-12-14 | 2003-06-25 | 한국전지주식회사 | Method of manufacturing inorganic gel electrolyte for lead-acid battery by adding of binding agent and the electrolyte |
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RU2817056C1 (en) * | 2023-11-21 | 2024-04-09 | Акционерное общество "Северный пресс" (АО "Северный пресс") | Method of producing gel electrolyte based on polyvinyl alcohol |
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