CN107204243A - A kind of zinc ion electrolytic solution for super capacitor - Google Patents
A kind of zinc ion electrolytic solution for super capacitor Download PDFInfo
- Publication number
- CN107204243A CN107204243A CN201710303360.2A CN201710303360A CN107204243A CN 107204243 A CN107204243 A CN 107204243A CN 201710303360 A CN201710303360 A CN 201710303360A CN 107204243 A CN107204243 A CN 107204243A
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- Prior art keywords
- electrolyte
- electrolytic solution
- super capacitor
- concentration
- hydrochloric acid
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Classifications
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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
- H01G11/58—Liquid electrolytes
- H01G11/62—Liquid electrolytes characterised by the solute, e.g. salts, anions or cations therein
-
- 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
- H01G11/58—Liquid electrolytes
- H01G11/60—Liquid electrolytes characterised by the solvent
-
- 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
- H01G11/58—Liquid electrolytes
- H01G11/64—Liquid electrolytes characterised by additives
-
- 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
- Y02E60/13—Energy storage using capacitors
Abstract
The present invention relates to a kind of zinc ion electrolytic solution for super capacitor, including deionized water, inorganic electrolyte salt, hydrochloric acid solution and ethanol, it is characterised in that：Ethanol volume accounts for the 20%~50% of electrolyte cumulative volume, and the concentration of the inorganic electrolyte salt in the electrolytic solution is 2~4.5mol/L, and the concentration of hydrochloric acid solution is 0.3~1mmol/L.Which raises cryogenic property, there is the specific capacity conservation rate that comparison is high at low temperature.The present invention by testing the freezing point of electrolyte, and the button capacitor under freezing point specific capacity, it was demonstrated that the cryogenic property of the electrolyte is relatively good.
Description
Technical field
A kind of zinc ion electrolytic solution for super capacitor of the present invention, belongs to supercapacitor technologies field.
Background technology
Ultracapacitor is a kind of energy storage device between battery and conventional capacitive, is had broad application prospects.
The obvious ultracapacitor of power characteristic, energy response is matched into composite power source with other types of electrokinetic cell to use,
While satisfaction energy-conservation and the use requirement of new-energy automobile, the efficiency of battery can be greatly improved, is increased the service life.Example
Such as, lithium ion battery and ultracapacitor are constituted into composite power source, ultracapacitor can be in the big work(such as startup, acceleration, climbing
Rate output operating mode work, lithium ion battery provides power needed for the continual mileage of automobile, and combination improves the dynamic of automobile
Power performance, extends the service life of battery.
Different types of battery is studied with the internal combustion for inspiring people to carry out electrokinetic cell that combines of ultracapacitor,
By the characteristic element of the characteristic element of a certain electrokinetic cell and another electrokinetic cell, by the optimization design of system,
Merged in same monomer, it can be made to have two kinds of power energy storage characteristics concurrently.And electrode material, barrier film, electrolyte etc. are feature
The representative of element.Electrolyte is the crucial composition of ultracapacitor, and its performance is to the internal resistance of super capacitor, high rate performance, life-span
And security performance etc. has important influence.
Publication No. CN102254691A patent discloses a kind of electrolyte of low-temperature super capacitor and passed through in electrolysis
The bulk solvent of liquid is that non-aqueous organic solvent is addition low melting point solvent in sprotic acetonitrile or propylene carbonate so that super
The electrolyte of level capacitor can have preferable ion conduction at low temperature, so that ultracapacitor can be at low temperature
Work.
Publication No. CN 103077834A patent discloses a kind of asymmetric super electricity based on water system neutral electrolyte
Electrolyte in container and preparation, the capacitor uses 0.5mol/L metabisulfite solution.
Publication No. CN 103811196A patent discloses a kind of ultracapacitor aqueous electrolyte, its raw material composition
Including deionized water, neutral inorganic electrolyte salt, low temperature additive, proof voltage additive, low temperature additive is organic alcohols
Compound, its volume accounts for the 5%~40% of electrolyte cumulative volume, and proof voltage additive is epoxychloropropane crosslinking intermediate, two neoprenes
Alkane crosslinking intermediate, 4-methyl-diaminopropane D-13, vanillic aldehyde, benzaldehyde, polyoxyethylene aliphatic alcohol ether, polyoxyethylated alkyl phenol
At least one of, neutral inorganic electrolyte salt is Li2SO4·H2O、NH4Cl、NaC1、KC1、(NH4)2SO4、NH4NO3、
NaNO3、KNO3At least one of, its concentration in the electrolytic solution is 0.5~3mol/L.
Publication No. CN105405683A patent discloses a kind of active charcoal super capacitor high pressure aqueous electrolyte
And preparation method thereof, the operating voltage and energy density of ultracapacitor can be improved.Its technical scheme（1）The choosing of solvent, solute
Select：Wherein solvent uses deionized water or distilled water, solute KHSO4, water and solute KHSO pure using analysis with LiCl4Matter
Amount proportioning is 1000: 28~210, and the quality proportioning of water and solute LiCl is respectively 1000: 0~20；（2）Electrolyte is configured：Will
The KHSO of precise4Pour into 20~50 DEG C of deionized waters or distilled water, stirring makes after it is completely dissolved, to add weighing
LiCl is dissolved, and obtains the high pressure resistant aqueous electrolyte of active charcoal super capacitor.Electrolyte prepared by this method has
Good performance, possesses good solution-stabilized performance, high voltage performance, the corrosive nature low to collector and good
Low-temperature conductive performance, therefore have broad application prospects.But the cryogenic property of the electrolyte in above-mentioned patent is poor.
The content of the invention
It is an object of the invention to provide a kind of zinc ion electrolytic solution for super capacitor, which raises cryogenic property, in low temperature
Under have the high specific capacity conservation rate of comparison.Freezing point of the invention by testing electrolyte, and the button capacitor under freezing point
Specific capacity, it was demonstrated that the cryogenic property of the electrolyte is relatively good.
The technical proposal of the invention is realized in this way：A kind of zinc ion electrolytic solution for super capacitor, including deionized water,
Inorganic electrolyte salt, hydrochloric acid solution and ethanol, it is characterised in that：Ethanol volume accounts for the 20%~50% of electrolyte cumulative volume, institute
The concentration of inorganic electrolyte salt in the electrolytic solution is stated for 2~4.5mol/L, the concentration of hydrochloric acid solution is 0. 3~1mmol/L.
The inorganic electrolyte salt is zinc chloride.
The positive effect of the present invention is that the addition of ethanol effectively increases the cryogenic property of ultracapacitor, by adjusting second
The volume of alcohol and the percentage of electrolyte cumulative volume, the electricity of electrolyte is ensure that in the cryogenic property for improving ultracapacitor simultaneously
Conductance, it is to avoid caused by the off-capacity of ultracapacitor power drop problem.Inorganic electrolyte salt is in process for preparation
A small amount of hydrochloric acid solution is added, the solubility of zinc chloride is improved.Inorganic electrolyte salt uses zinc chloride, is conducive to improving super
The chemical property of capacitor, there is the specific capacity conservation rate that comparison is high at low temperature.
Brief description of the drawings
Fig. 1 is the charging and discharging curve figure under the normal temperature of the embodiment of the present invention 1.
Fig. 2 is the charging and discharging curve figure under the freezing point of the embodiment of the present invention 1.
Fig. 3 is the charging and discharging curve figure under the normal temperature of the embodiment of the present invention 2.
Fig. 4 is the charging and discharging curve figure under the freezing point of the embodiment of the present invention 2.
Fig. 5 is the charging and discharging curve figure under the normal temperature of the embodiment of the present invention 3.
Fig. 6 is the charging and discharging curve figure under the freezing point of the embodiment of the present invention 3.
Fig. 7 is the charging and discharging curve figure under the normal temperature of the embodiment of the present invention 4.
Fig. 8 is the charging and discharging curve figure under the freezing point of the embodiment of the present invention 4.
Embodiment
The present invention is specifically described with embodiment below in conjunction with the accompanying drawings, described embodiment is the power to the present invention
The specific descriptions that profit is required, claim includes but is not limited to described embodiment content.
A kind of zinc ion electrolytic solution for super capacitor, the raw material composition of the electrolyte includes deionized water, inorganic electrolyte
Salt zinc chloride, hydrochloric acid solution；
Raw material composition also includes low temperature additive ethanol, accounts for the 20%~50% of electrolyte cumulative volume, inorganic electrolyte salt zinc chloride
Concentration in the electrolytic solution is 2~4.5mol/L, and the concentration of hydrochloric acid solution is 0. 3~1mmol/L.
Embodiment 1：
A kind of zinc ion electrolytic solution for super capacitor, the raw material composition of the electrolyte includes deionized water, inorganic electrolyte salt chlorine
Change zinc, ethanol, hydrochloric acid solution, the volume of ethanol accounts for the 20% of electrolyte cumulative volume, and the inorganic electrolyte salt zinc chloride is in electrolysis
Concentration in liquid is 2mol/L, and the concentration of hydrochloric acid solution is 0. 3mmol/L.It is first that inorganic electrolyte salt zinc chloride is molten during preparation
In deionized water, and add hydrochloric acid solution to be used to eliminate precipitation, improve solubility, electrolyte salt solution is obtained, then to electrolysis
Matter salting liquid, which adds ethanol and is well mixed, obtains zinc ion electrolytic solution for super capacitor.The freezing point of electrolyte is -14.0 DEG C.Press
Order according to activated carbon positive pole, barrier film, activated carbon negative electrode is put into button capacitor protector, injects electrolyte, and button is made in encapsulation
Ultracapacitor（Activated carbon/activated carbon）.Test the chemical property of ultracapacitor.Specific capacity is 34.9 F/g under normal temperature,
Specific capacity is 32.0 F/g under freezing point, and specific capacity conservation rate is 91.7%.
Embodiment 2：
Step be the same as Example 1, unlike, the volume of the low temperature additive accounts for the 30% of electrolyte cumulative volume, described without electromechanics
It is 2mol/L to solve the concentration of matter salt in the electrolytic solution, and the concentration of hydrochloric acid solution is 0. 5mmol/L.The freezing point of electrolyte is -14.3
℃.Specific capacity is 42.9 F/g under normal temperature, and specific capacity is 42.5 F/g under freezing point, and specific capacity conservation rate is 99.0%.
Embodiment 3：
Step be the same as Example 1, unlike, the volume of the low temperature additive accounts for the 40% of electrolyte cumulative volume, described without electromechanics
It is 3mol/L to solve the concentration of matter salt in the electrolytic solution, and the concentration of hydrochloric acid solution is 0. 8mmol/L.The freezing point of electrolyte is -15.1
℃.Specific capacity is 54.0 F/g under normal temperature, and specific capacity is 46.8 F/g under freezing point, and specific capacity conservation rate is 86.7%.
Embodiment 4：
Step be the same as Example 1, unlike, the volume of the low temperature additive accounts for the 50% of electrolyte cumulative volume, described without electromechanics
It is 4 mol/L to solve the concentration of matter salt in the electrolytic solution, and the concentration of hydrochloric acid solution is 1mmol/L.The freezing point of electrolyte is -15.6
℃.Specific capacity is 59.5 F/g under normal temperature, and specific capacity is 53.5F/g under freezing point, and specific capacity conservation rate is 89.9%.
Claims (2)
1. a kind of zinc ion electrolytic solution for super capacitor, including deionized water, inorganic electrolyte salt, hydrochloric acid solution and ethanol,
It is characterized in that：Ethanol volume accounts for the 20%~50% of electrolyte cumulative volume, the concentration of the inorganic electrolyte salt in the electrolytic solution
For 2~4.5mol/L, the concentration of hydrochloric acid solution is 0. 3~1mmol/L.
2. a kind of zinc ion electrolytic solution for super capacitor according to claim 1, it is characterised in that the inorganic electrolyte
Matter salt is zinc chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710303360.2A CN107204243A (en) | 2017-05-03 | 2017-05-03 | A kind of zinc ion electrolytic solution for super capacitor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710303360.2A CN107204243A (en) | 2017-05-03 | 2017-05-03 | A kind of zinc ion electrolytic solution for super capacitor |
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| CN107204243A true CN107204243A (en) | 2017-09-26 |
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| CN201710303360.2A Pending CN107204243A (en) | 2017-05-03 | 2017-05-03 | A kind of zinc ion electrolytic solution for super capacitor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107369567A (en) * | 2017-07-17 | 2017-11-21 | 深圳中科瑞能实业有限公司 | Zinc ion hybrid super capacitor electrolyte, zinc ion hybrid super capacitor and preparation method thereof |
| CN107910195A (en) * | 2017-10-26 | 2018-04-13 | 刘小林 | A kind of hybrid super capacitor |
| CN110060882A (en) * | 2019-05-24 | 2019-07-26 | 中国科学院理化技术研究所 | A kind of aqueous electrolyte and its application |
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| CN101840784A (en) * | 2010-04-19 | 2010-09-22 | 中国科学院长春应用化学研究所 | Electrolyte for super capacitor and super capacitor |
| US20120113565A1 (en) * | 2007-04-16 | 2012-05-10 | Korea Institute Of Science And Technology | Electrode for super capacitor having metal oxide deposited on ultrafine carbon fiber and the fabrication method thereof |
| CN103545123A (en) * | 2013-10-30 | 2014-01-29 | 中国第一汽车股份有限公司 | Hybrid energy storage device with zinc ion battery and supercapacitor |
| CN103811196A (en) * | 2014-01-22 | 2014-05-21 | 东风商用车有限公司 | Water-based electrolyte of super capacitor |
| CN103560019B (en) * | 2013-10-30 | 2016-05-04 | 中国第一汽车股份有限公司 | A kind of zinc ion hybrid super capacitor |
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2017
- 2017-05-03 CN CN201710303360.2A patent/CN107204243A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20120113565A1 (en) * | 2007-04-16 | 2012-05-10 | Korea Institute Of Science And Technology | Electrode for super capacitor having metal oxide deposited on ultrafine carbon fiber and the fabrication method thereof |
| CN101840784A (en) * | 2010-04-19 | 2010-09-22 | 中国科学院长春应用化学研究所 | Electrolyte for super capacitor and super capacitor |
| CN103545123A (en) * | 2013-10-30 | 2014-01-29 | 中国第一汽车股份有限公司 | Hybrid energy storage device with zinc ion battery and supercapacitor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107369567A (en) * | 2017-07-17 | 2017-11-21 | 深圳中科瑞能实业有限公司 | Zinc ion hybrid super capacitor electrolyte, zinc ion hybrid super capacitor and preparation method thereof |
| CN107910195A (en) * | 2017-10-26 | 2018-04-13 | 刘小林 | A kind of hybrid super capacitor |
| WO2019080689A1 (en) * | 2017-10-26 | 2019-05-02 | 刘小林 | Hybrid supercapacitor |
| CN107910195B (en) * | 2017-10-26 | 2020-07-28 | 刘小林 | Hybrid super capacitor |
| CN110060882A (en) * | 2019-05-24 | 2019-07-26 | 中国科学院理化技术研究所 | A kind of aqueous electrolyte and its application |
| CN110060882B (en) * | 2019-05-24 | 2021-09-07 | 中国科学院理化技术研究所 | Aqueous electrolyte and application thereof |
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Application publication date: 20170926 |
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