CN111640588A - Preparation method of co-soluble electrolyte for ultrahigh-voltage electrolytic capacitor - Google Patents
Preparation method of co-soluble electrolyte for ultrahigh-voltage electrolytic capacitor Download PDFInfo
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- CN111640588A CN111640588A CN202010513664.3A CN202010513664A CN111640588A CN 111640588 A CN111640588 A CN 111640588A CN 202010513664 A CN202010513664 A CN 202010513664A CN 111640588 A CN111640588 A CN 111640588A
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- electrolyte
- electrolytic capacitor
- voltage electrolytic
- soluble electrolyte
- solution
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/54—Electrolytes
- H01G11/56—Solid electrolytes, e.g. gels; Additives therein
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/0029—Processes of manufacture
- H01G9/0036—Formation of the solid electrolyte layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
- H01G9/025—Solid electrolytes
Abstract
The invention relates to the technical field of electric storage devices, in particular to a preparation method of a co-soluble electrolyte for an ultrahigh-voltage electrolytic capacitor. The novel electrolyte is particularly a novel cementing electrolyte, compared with the traditional lithium ion water-soluble electrolyte and solid electrolyte, zinc is used as a conductive ion, compared with the lithium ion zinc physical and chemical properties, the novel cementing electrolyte is more stable, the reaction process is more controllable, meanwhile, because the lithium chemical property is too active, explosion can be caused when the combustion is serious easily during use, conductive polymeric polymers are doped in the electrolyte, the conductive capability of the electrolyte is further improved, and a gel additive is added into the electrolyte, so that the electrolyte is flocculated to form a jelly,the stability of the electrolyte is improved, and simultaneously PVA is added into the gel electrolyte and a large amount of OH in the PVA is utilized‑The polymerization capacity of the electrolyte is improved, the structural stability of the electrolyte in a glue state is further enhanced, and therefore the conductivity of the electrolyte is improved, and the service life of the electrolyte is prolonged.
Description
Technical Field
The invention relates to the technical field of electric storage devices, in particular to a preparation method of a co-soluble electrolyte for an ultrahigh-voltage electrolytic capacitor.
Background
The electrolyte is a broad term, and the content represented by the electrolyte is greatly different when the electrolyte is used in different industries. There are electrolytes (also called electrolytes) in organisms, and also electrolytes applied to the battery industry, and electrolytes in the industries of electrolytic capacitors, super capacitors and the like.
The components of the electrolyte applied in different industries are different greatly and even are completely different.
For example, the electrolyte of human body mainly comprises water, sodium chloride, PH buffer substance, etc., the electrolyte of aluminum electrolyte capacitor contains main solvent such as GBL, etc., the electrolyte of super capacitor contains main solvent such as propylene carbonate or acetonitrile, the electrolyte of lithium manganese primary battery contains main solvent such as propylene carbonate, ethylene glycol dimethyl ether, etc., the electrolyte of lithium ion battery contains main solvent such as ethylene carbonate, dimethyl carbonate, ethyl methyl carbonate and diethyl carbonate, etc. their respective conductive salts are completely different, for example, sodium chloride in human body, tetraethylammonium tetrafluoroborate in super capacitor electrolyte, lithium perchlorate or lithium trifluoromethanesulfonate are commonly used in lithium manganese primary battery, and lithium hexafluorophosphate is used in lithium ion battery. The existing electrolyte used in the capacitor has low conductive capability and insufficient structural strength, and cannot be recycled.
Disclosure of Invention
The invention aims to provide a preparation method of a co-soluble electrolyte for an ultrahigh-voltage electrolytic capacitor, which aims to solve the problems in the background technology.
A preparation method of a co-soluble electrolyte for an ultrahigh-voltage electrolytic capacitor comprises the following steps:
step 1: filling a sufficient amount of rare gas shielding gas into the reaction container, wherein the rare gas shielding gas is one of helium or argon;
step 2: adding zinc salt powder into a reaction container, adding a proper amount of organic solvent and deionized water, and then opening a stirring device to stir for 20-40 min;
and step 3: adding a gel additive into the reaction solution after the stirring of the stirring device is finished to prepare an electrolyte primary solution;
and 4, step 4: adding appropriate amount of PVA solution into the prepared electrolyte primary solution to make the electrolyte in the form of glue solution, and performing low temperature water bath at 30-50 deg.C for 30-40 min;
and 5: and opening the reaction container to filter solid impurities in the reaction container to obtain the co-soluble electrolyte for the ultrahigh-voltage electrolytic capacitor.
Preferably, the zinc salt powder in the step 2 is specifically one of ZnCl2, ZnSO4, Zn (NO3)2, Zn (ClO4)2 and Zn (BF4) 2.
Preferably, the organic solvent in step 2 is at least one of Dihexyl Ester (DEC), Propylene Carbonate (PC), dimethyl carbonate (DMC) and Ethylene Carbonate (EC).
Preferably, the gel additive in the step 3 is one of beta-cyclodextrin, nano-silica and fumed silica, and the mass fraction of the gel additive is 1-3%.
Preferably, the concentration of zinc ions in the solution prepared in the step 2 is 1.5-2.8mol/L, and the mass fraction of the organic solvent is 20-28%.
Preferably, the stirring device in the step 2 and the step 3 is a magnetic stirrer, and the stirring speed is 1500 rpm/min.
Preferably, the mass fraction of PVA in the step 4 is 5-8%.
Compared with the prior art, the invention has the beneficial effects that: adopt zinc as conductive ion, it is more stable to compare in lithium ion zinc physicochemical property, the reaction flow is more controllable, simultaneously because lithium chemical property is too active, easily take place the burning when using, then can lead to the explosion when serious, adopt simultaneously to dope in electrolyte and have electrically conductive polymerization polymer, further improve the conductive ability of electrolyte, and add the gel additive in electrolyte, make electrolyte flocculation formation jelly, improve the stability of electrolyte, add PVA in the mucilage binding electrolyte simultaneously, utilize a large amount of OH in the PVA-The polymerization capacity of the electrolyte is improved, the stability of the structure of the electrolyte in a glue state is further enhanced, the electrolyte can be repeatedly charged and discharged, and the conductive capacity and the service life of the electrolyte are improved.
Detailed Description
The invention discloses a preparation method of a co-soluble electrolyte for an ultrahigh-voltage electrolytic capacitor, which is further detailed by specific examples.
Example 1
A preparation method of a co-soluble electrolyte for an ultrahigh-voltage electrolytic capacitor comprises the following steps:
step 1: filling sufficient rare gas shielding gas into the reaction container, wherein the rare gas shielding gas is one of helium or argon;
step 2: adding zinc salt powder into a reaction container, adding a proper amount of organic solvent and deionized water, and then opening a stirring device to stir for 20-40 min;
and step 3: adding a gel additive into the reaction solution after the stirring of the stirring device is finished to prepare an electrolyte primary solution;
and 4, step 4: adding appropriate amount of PVA solution into the prepared electrolyte primary solution to make the electrolyte in the form of glue solution, and performing low temperature water bath at 30-50 deg.C for 30-40 min;
and 5: and opening the reaction container to filter solid impurities in the reaction container to obtain the co-soluble electrolyte for the ultrahigh-voltage electrolytic capacitor.
The zinc salt powder in the step 2 is ZnCl2、ZnSO4、Zn(NO3)2、Zn(ClO4)2、Zn(BF4)2One kind of (1).
In the step 2, the organic solvent is at least one of Dihexyl Ester (DEC), Propylene Carbonate (PC), dimethyl carbonate (DMC) and Ethylene Carbonate (EC).
In the step 3, the gel additive is one of beta-cyclodextrin, nano silicon dioxide and fumed silica, and the mass fraction of the gel additive is 1%.
The concentration of zinc ions in the solution prepared in the step 2 is 1.5mol/L, and the mass fraction of the organic solvent is 20%.
The stirring device in the step 2 and the step 3 is specifically a magnetic stirrer, and the stirring speed is 1500 rpm/min.
The mass fraction of PVA in step 4 was 5%.
Example 2
A preparation method of a co-soluble electrolyte for an ultrahigh-voltage electrolytic capacitor comprises the following steps:
step 1: filling sufficient rare gas shielding gas into the reaction container, wherein the rare gas shielding gas is one of helium or argon;
step 2: adding zinc salt powder into a reaction container, adding a proper amount of organic solvent and deionized water, and then opening a stirring device to stir for 20-40 min;
and step 3: adding a gel additive into the reaction solution after the stirring of the stirring device is finished to prepare an electrolyte primary solution;
and 4, step 4: adding appropriate amount of PVA solution into the prepared electrolyte primary solution to make the electrolyte in the form of glue solution, and performing low temperature water bath at 30-50 deg.C for 30-40 min;
and 5: and opening the reaction container to filter solid impurities in the reaction container to obtain the co-soluble electrolyte for the ultrahigh-voltage electrolytic capacitor.
The zinc salt powder in the step 2 is ZnCl2、ZnSO4、Zn(NO3)2、Zn(ClO4)2、Zn(BF4)2One kind of (1).
In the step 2, the organic solvent is at least one of Dihexyl Ester (DEC), Propylene Carbonate (PC), dimethyl carbonate (DMC) and Ethylene Carbonate (EC).
In the step 3, the gel additive is one of beta-cyclodextrin, nano silicon dioxide and fumed silica, and the mass fraction of the gel additive is 3%.
The concentration of zinc ions in the solution prepared in the step 2 is 2.8mol/L, and the mass fraction of the organic solvent is 28%.
The stirring device in the step 2 and the step 3 is specifically a magnetic stirrer, and the stirring speed is 1500 rpm/min.
The mass fraction of PVA in step 4 was 8%.
Example 3
A preparation method of a co-soluble electrolyte for an ultrahigh-voltage electrolytic capacitor comprises the following steps:
step 1: filling sufficient rare gas shielding gas into the reaction container, wherein the rare gas shielding gas is one of helium or argon;
step 2: adding zinc salt powder into a reaction container, adding a proper amount of organic solvent and deionized water, and then opening a stirring device to stir for 20-40 min;
and step 3: adding a gel additive into the reaction solution after the stirring of the stirring device is finished to prepare an electrolyte primary solution;
and 4, step 4: adding appropriate amount of PVA solution into the prepared electrolyte primary solution to make the electrolyte in the form of glue solution, and performing low temperature water bath at 30-50 deg.C for 30-40 min;
and 5: and opening the reaction container to filter solid impurities in the reaction container to obtain the co-soluble electrolyte for the ultrahigh-voltage electrolytic capacitor.
The zinc salt powder in the step 2 is ZnCl2、ZnSO4、Zn(NO3)2、Zn(ClO4)2、Zn(BF4)2One kind of (1).
In the step 2, the organic solvent is at least one of Dihexyl Ester (DEC), Propylene Carbonate (PC), dimethyl carbonate (DMC) and Ethylene Carbonate (EC).
In the step 3, the gel additive is one of beta-cyclodextrin, nano silicon dioxide and fumed silica, and the mass fraction of the gel additive is 2%.
The concentration of zinc ions in the solution prepared in the step 2 is 2.3mol/L, and the mass fraction of the organic solvent is 24%.
The stirring device in the step 2 and the step 3 is specifically a magnetic stirrer, and the stirring speed is 1500 rpm/min.
The mass fraction of PVA in step 4 was 6.5%.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A preparation method of a co-soluble electrolyte for an ultrahigh-voltage electrolytic capacitor is characterized by comprising the following steps: the method comprises the following steps:
step 1: filling a sufficient amount of rare gas shielding gas into the reaction container, wherein the rare gas shielding gas is one of helium or argon;
step 2: adding zinc salt powder into a reaction container, adding a proper amount of organic solvent and deionized water, and then opening a stirring device to stir for 20-40 min;
and step 3: adding a gel additive into the reaction solution after the stirring of the stirring device is finished to prepare an electrolyte primary solution;
and 4, step 4: adding appropriate amount of PVA solution into the prepared electrolyte primary solution to make the electrolyte in the form of glue solution, and performing low temperature water bath at 30-50 deg.C for 30-40 min;
and 5: and opening the reaction container to filter solid impurities in the reaction container to obtain the co-soluble electrolyte for the ultrahigh-voltage electrolytic capacitor.
2. The method for preparing a co-soluble electrolyte for an ultra-high voltage electrolytic capacitor according to claim 1, wherein: the zinc salt powder in the step 2 is ZnCl2、ZnSO4、Zn(NO3)2、Zn(ClO4)2、Zn(BF4)2One kind of (1).
3. The method for preparing a co-soluble electrolyte for an ultra-high voltage electrolytic capacitor according to claim 4, wherein: the organic solvent in the step 2 is at least one of Dihexyl Ester (DEC), Propylene Carbonate (PC), dimethyl carbonate (DMC) and Ethylene Carbonate (EC).
4. The method for preparing a co-soluble electrolyte for an ultra-high voltage electrolytic capacitor according to claim 1, wherein: the gel additive in the step 3 is one of beta-cyclodextrin, nano silicon dioxide and fumed silica, and the mass fraction of the gel additive is 1-3%.
5. The method for preparing a co-soluble electrolyte for an ultra-high voltage electrolytic capacitor according to claim 1, wherein: the concentration of zinc ions in the solution prepared in the step 2 is 1.5-2.8mol/L, and the mass fraction of the organic solvent is 20-28%.
6. The method for preparing a co-soluble electrolyte for an ultra-high voltage electrolytic capacitor according to claim 1, wherein: the stirring device in the step 2 and the step 3 is specifically a magnetic stirrer, and the stirring speed is 1500 rpm/min.
7. The method for preparing a co-soluble electrolyte for an ultra-high voltage electrolytic capacitor according to claim 1, wherein: the mass fraction of PVA in the step 4 is 5-8%.
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| CN202010513664.3A CN111640588A (en) | 2020-06-08 | 2020-06-08 | Preparation method of co-soluble electrolyte for ultrahigh-voltage electrolytic capacitor |
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| CN202010513664.3A CN111640588A (en) | 2020-06-08 | 2020-06-08 | Preparation method of co-soluble electrolyte for ultrahigh-voltage electrolytic capacitor |
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Citations (8)
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| CN103840198A (en) * | 2012-11-20 | 2014-06-04 | 中国科学院宁波材料技术与工程研究所 | Lithium ion battery gel polymer electrolyte and preparation method thereof |
| CN105938759A (en) * | 2016-06-01 | 2016-09-14 | 广东黄宝石电子科技有限公司 | Electrolytic capacitor middle-high voltage electrolyte and preparation method thereof |
| US20170288266A1 (en) * | 2016-03-31 | 2017-10-05 | Interstellar Solid-State Li-ion Batteries Technology (Chengdu) Co., Ltd | Gel Electrolyte Membrane and Method for Forming the Same, Electrode Assembly, Gel Polymer Lithium-Ion Battery and Electric Vehicle |
| US20190140317A1 (en) * | 2017-11-07 | 2019-05-09 | City University Of Hong Kong | Gel polymer electrolytes comprising electrolyte additive |
| US20190371535A1 (en) * | 2018-05-29 | 2019-12-05 | City University Of Hong Kong | Robust electrical component and an electrolyte for use in an electrical component |
| CN111133543A (en) * | 2017-09-28 | 2020-05-08 | 日本贵弥功株式会社 | Gel electrolytic capacitor |
| CN111164807A (en) * | 2017-09-29 | 2020-05-15 | Ａｔｔａｃｃａｔｏ合同会社 | Binder for lithium ion battery, and electrode and separator using same |
| CN111211360A (en) * | 2018-11-22 | 2020-05-29 | 浙江浙能中科储能科技有限公司 | Additive modified aqueous zinc ion colloidal electrolyte and preparation method thereof |
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2020
- 2020-06-08 CN CN202010513664.3A patent/CN111640588A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840198A (en) * | 2012-11-20 | 2014-06-04 | 中国科学院宁波材料技术与工程研究所 | Lithium ion battery gel polymer electrolyte and preparation method thereof |
| US20170288266A1 (en) * | 2016-03-31 | 2017-10-05 | Interstellar Solid-State Li-ion Batteries Technology (Chengdu) Co., Ltd | Gel Electrolyte Membrane and Method for Forming the Same, Electrode Assembly, Gel Polymer Lithium-Ion Battery and Electric Vehicle |
| CN105938759A (en) * | 2016-06-01 | 2016-09-14 | 广东黄宝石电子科技有限公司 | Electrolytic capacitor middle-high voltage electrolyte and preparation method thereof |
| CN111133543A (en) * | 2017-09-28 | 2020-05-08 | 日本贵弥功株式会社 | Gel electrolytic capacitor |
| CN111164807A (en) * | 2017-09-29 | 2020-05-15 | Ａｔｔａｃｃａｔｏ合同会社 | Binder for lithium ion battery, and electrode and separator using same |
| US20190140317A1 (en) * | 2017-11-07 | 2019-05-09 | City University Of Hong Kong | Gel polymer electrolytes comprising electrolyte additive |
| US20190371535A1 (en) * | 2018-05-29 | 2019-12-05 | City University Of Hong Kong | Robust electrical component and an electrolyte for use in an electrical component |
| CN111211360A (en) * | 2018-11-22 | 2020-05-29 | 浙江浙能中科储能科技有限公司 | Additive modified aqueous zinc ion colloidal electrolyte and preparation method thereof |
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Address after: Building 4, No.3, Gaobu section, Beiwang Road, Gaobu Town, Dongguan City, Guangdong Province 523000 Applicant after: GUANGDONG TOPAZ ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 523000 Guangdong city of Dongguan province Dalang Zhen fo Zi Ao Cun Buddha Fu Road No. 3 Building 3 floor C Applicant before: GUANGDONG TOPAZ ELECTRONIC TECHNOLOGY Co.,Ltd. |
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Application publication date: 20200908 |
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