CN117276698A - Aqueous zinc ion battery electrolyte and preparation method and application thereof - Google Patents
Aqueous zinc ion battery electrolyte and preparation method and application thereof Download PDFInfo
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- CN117276698A CN117276698A CN202311243994.5A CN202311243994A CN117276698A CN 117276698 A CN117276698 A CN 117276698A CN 202311243994 A CN202311243994 A CN 202311243994A CN 117276698 A CN117276698 A CN 117276698A
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- zinc
- organic additive
- ion battery
- electrolyte
- water
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 53
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 239000006259 organic additive Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 9
- 229920000570 polyether Polymers 0.000 claims abstract description 9
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 claims abstract description 6
- 150000003751 zinc Chemical class 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 7
- CITILBVTAYEWKR-UHFFFAOYSA-L zinc trifluoromethanesulfonate Chemical compound [Zn+2].[O-]S(=O)(=O)C(F)(F)F.[O-]S(=O)(=O)C(F)(F)F CITILBVTAYEWKR-UHFFFAOYSA-L 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 claims description 3
- QNDQILQPPKQROV-UHFFFAOYSA-N dizinc Chemical compound [Zn]=[Zn] QNDQILQPPKQROV-UHFFFAOYSA-N 0.000 claims description 3
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical group [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 2
- 229960001763 zinc sulfate Drugs 0.000 claims description 2
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 26
- 239000011701 zinc Substances 0.000 abstract description 20
- 229910052725 zinc Inorganic materials 0.000 abstract description 17
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 230000008021 deposition Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000007086 side reaction Methods 0.000 abstract description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000032683 aging Effects 0.000 abstract description 4
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 4
- 239000001257 hydrogen Substances 0.000 abstract description 4
- 239000011241 protective layer Substances 0.000 abstract description 4
- 239000007784 solid electrolyte Substances 0.000 abstract description 4
- 150000002894 organic compounds Chemical class 0.000 abstract description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 17
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 8
- 210000004027 cell Anatomy 0.000 description 8
- 239000002202 Polyethylene glycol Substances 0.000 description 6
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 6
- 229920001223 polyethylene glycol Polymers 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 210000001787 dendrite Anatomy 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000001338 self-assembly Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000002000 Electrolyte additive Substances 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000032677 cell aging Effects 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000003313 weakening 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
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
- H01M10/38—Construction or manufacture
-
- 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
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
-
- 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 application discloses a water-based zinc ion battery electrolyte, a preparation method and application thereof, wherein the electrolyte comprises an organic additive, and the organic additive is an organic compound containing a phosphate group and polyether. The electrolyte remarkably improves the cycle stability and corrosion resistance of the water-based zinc ion battery. The organic additive can be adsorbed on the surface of zinc metal, and forms a channel for transmitting zinc ions through polyether on a molecular chain, so that the rapid and uniform deposition of zinc ions is realized, the dynamic performance of a battery is improved, and high-rate charge and discharge are performed. In addition, the organic additive can form a protective layer of a solid electrolyte interface phase on a zinc electrode of a battery, improves the thermodynamic stability of the interface of the battery, reduces hydrogen evolution side reaction, has excellent calendar aging resistance, and has great significance for commercial application.
Description
Technical Field
The application relates to a water system zinc ion battery electrolyte, a preparation method and application thereof, and belongs to the technical field of water system zinc ion batteries.
Background
Rechargeable nonaqueous lithium ion batteries have become the primary electricity for driving portable electronic products and electric vehiclesChemical energy storage devices, however, their flammable and toxic electrolytes limit their use in grid scale energy storage. In contrast, zinc metal batteries have low zinc metal potential (-0.76 v vs. she) and large specific capacity (820 mAh g) due to their low cost, high safety, environmental protection characteristics -1 ) Equity, is considered as one of the most potential energy storage devices in future large-scale energy storage systems.
However, despite the many advantages of aqueous zinc-ion batteries (ZIBs), their practical use still faces many challenges, including primarily corrosion of the zinc anode by acidic electrolytes and performance degradation problems at high current densities and deposition surface capacities. The metal zinc electrode can spontaneously and continuously generate side reactions such as hydrogen evolution and the like in the acid electrolyte, consume active substances and the electrolyte, cause irreversible consumption of zinc, seriously influence the cycle stability and calendar life of the battery, and seriously restrict the industrial application of the water-based zinc ion battery. And, the calendar aging characteristics of the battery are directly related to the life and reliability thereof, thereby having an important influence on the performance and economic benefit of the whole energy storage system. In addition, under high current density, the rapid charge-discharge process may cause non-uniformity of electric field and incomplete stripping of zinc, and at the same time, the diffusion rate of zinc ions cannot meet charge transfer, concentration polarization is generated, resulting in generation of zinc dendrite, causing short circuit of the battery.
In order to realize safe operation of aqueous zinc ion batteries under high deposition capacity and high current density conditions, a great deal of research has been conducted on electrolyte and electrode modification techniques such as artificial plating which can improve zinc deposition effects, but under high area capacity conditions, it is difficult for batteries to maintain stable operation for a long period of time. This is mainly due to the fact that too much deposited zinc will cover the modified electrode surface, resulting in a gradual weakening or even a disappearance of the protective effect. Furthermore, such processes are complex and costly and may not be suitable for large scale applications. In contrast, electrolyte additives are considered to be a very convenient and efficient method due to their simplicity, low cost and excellent properties.
Disclosure of Invention
According to one aspect of the present application, there is provided an aqueous zinc ion battery electrolyte containing an organic additive having chain end functionalized phosphoric acid and polyether polar groups, through which adsorption and self-assembly on a metal interface and a solid electrolyte interface protective layer are formed, dendrite growth is suppressed, hydrogen evolution side reactions are reduced, and thereby calendar life and cycle performance of the battery are improved.
The electrolyte comprises an organic additive and zinc salt, wherein the organic additive is a polyether compound; the polyether compound contains a phosphate group.
Optionally, the phosphate group is located at the chain end of the molecular chain of the organic additive.
The aqueous zinc ion battery electrolyte organic additive can inhibit zinc dendrite growth and side reaction.
Optionally, the electrolyte described herein further comprises water.
Optionally, the organic additive has the structure as follows:
wherein n is a positive integer.
Optionally, the weight average molecular weight of the organic additive is 250-750. Preferably, the weight average molecular weight of the organic additive is 350.
Alternatively, the weight average molecular weight of the organic additive is independently selected from any one of 250, 300, 350, 400, 500, 600, 700, 750 and ranges of values for both.
Optionally, the volume ratio of the organic additive in water is 0.3-2.5%; preferably, the volume ratio of the organic additive in water is 0.5-2%; further preferably, the volume ratio of the organic additive in water is 0.8% -1.2%; more preferably, the volume ratio of the organic additive in water is 1%.
Alternatively, the volume ratio of the organic additive in water is independently selected from any one of 0.3%, 0.5%, 0.8%, 1%, 1.2%, 1.5%, 2%, 2.5% and ranges of values for both.
Optionally, the aqueous zinc ion battery electrolyte further comprises zinc salt, wherein the zinc salt is zinc sulfate and/or zinc triflate. Preferably, the zinc salt is zinc triflate.
In yet another aspect, the present application provides a method for preparing the aqueous zinc ion battery electrolyte, including: and adding the organic additive into the zinc salt aqueous solution, and stirring and dissolving to obtain the water-based zinc ion battery electrolyte.
Alternatively, the zinc salt aqueous solution has a mass molar concentration of zinc salt of 1-3mol/Kg, preferably 2mol/Kg.
The electrolyte remarkably improves the cycle stability and corrosion resistance of the water-based zinc ion battery. The organic compound additive can be adsorbed on the surface of zinc metal, and a channel for transmitting zinc ions is formed by polyether on a molecular chain, so that the rapid and uniform deposition of the zinc ions is realized, the dynamic performance of a battery is improved, and high-rate charge and discharge are carried out. In addition, the organic additive can form a protective layer of a solid electrolyte interface phase on a zinc electrode of a battery, improves the thermodynamic stability of the interface of the battery, reduces hydrogen evolution side reaction, has excellent calendar aging resistance, and has great significance for commercial application.
In yet another aspect, the present application provides an aqueous zinc ion battery comprising a positive electrode, a negative electrode, a separator, and the organic additive described above.
The water-based zinc ion battery comprises a zinc-copper half battery, a zinc-zinc symmetrical battery and MnO 2 And (3) a full battery.
The beneficial effects that this application can produce include:
(1) The phosphoric acid group of the organic additive has strong adsorption capacity to metal Zn, and can form a protective layer of an organic-inorganic component hybridization solid electrolyte phase, so that the thermodynamic stability of a battery interface is improved, corrosion reaction is inhibited, and after the zinc foil is placed in electrolyte containing the organic additive for 30 days, the surface of the zinc foil still presents a horizontal uniform morphology;
(2) Self-assembly of organic additives at metal interfaces to form polyether-based zinc ionsFast diffusion channel, inhibiting dendrite growth, realizing fast and homogeneous deposition of zinc ion, improving dynamic performance of cell, high-rate charge and discharge, and raising calendar life and cycle performance of cell 2 In the full cell, the capacity retention was 89% from 25 cycles of activation to 150 cycles.
Drawings
FIG. 1 is a coulombic efficiency cycle curve of a Zn||Cu half-cell using the electrolyte of the example and the electrolyte of comparative example 1;
FIG. 2 is a scanning electron microscope image of the surface of a zinc foil after soaking the zinc foil for 30 days using the electrolyte in example 2 and comparative example 1;
FIG. 3 is a long-circulating polarization curve of a Zn symmetric cell using the electrolyte of example 2 and the electrolyte of comparative example 1;
FIG. 4 shows MnO using the electrolyte of example 2 and the electrolyte of comparative example 1 2 Specific discharge capacity versus number of cycles after full cell aging.
Detailed Description
The present application is described in detail below with reference to examples, but the present application is not limited to these examples.
Unless otherwise indicated, all starting materials in the examples of the present application were purchased commercially.
The phosphate groups in the phosphate-functionalized methoxypolyethylene glycol in this example are at the chain portion of the molecular chain.
Example 1
Configuration of test electrolyte: and adding phosphoric acid functionalized methoxy polyethylene glycol (the weight average molecular weight is 350 and the addition amount is 0.5 percent of the water volume) into a zinc triflate aqueous solution (the water volume is 1 mL) with the mass molar concentration of 2mol/Kg, fully stirring until the phosphoric acid functionalized methoxy polyethylene glycol is completely dissolved, and standing to obtain the aqueous zinc ion battery electrolyte.
Example 2
Configuration of test electrolyte: configuration of test electrolyte: and adding phosphoric acid functionalized methoxy polyethylene glycol (the weight average molecular weight is 350 and the addition amount is 1 percent of the volume of water) into a zinc triflate aqueous solution (the water volume is 1 mL) with the mass molar concentration of 2mol/Kg, fully stirring until the phosphoric acid functionalized methoxy polyethylene glycol is completely dissolved, and then standing to obtain the aqueous zinc ion battery electrolyte.
Example 3
Configuration of test electrolyte: configuration of test electrolyte: and adding phosphoric acid functionalized methoxy polyethylene glycol (the weight average molecular weight is 350 and the addition amount is 2 percent of the water volume) into a zinc triflate aqueous solution (the water volume is 1 mL) with the mass molar concentration of 2mol/Kg, fully stirring until the phosphoric acid functionalized methoxy polyethylene glycol is completely dissolved, and standing to obtain the aqueous zinc ion battery electrolyte.
Comparative example 1
The specific embodiment of the aqueous zinc ion battery electrolyte of the comparative example is the same as in example 1, except that the organic additive phosphoric acid functionalized methoxypolyethylene glycol is not added.
The above examples and comparative example 1 were applied to zinc-copper half cells using 4mA/cm 2 And a current density of 1mA/cm 2 Is charged and discharged. Their respective electrochemical properties are shown in fig. 1. Wherein after approximately 60 cycles, the coulomb efficiency of the battery of comparative example 1 rapidly decreased and a short circuit occurred; while the examples using the additives all had cycle lengths exceeding 200 cycles, the cycle life being significantly better than that of comparative example 1. In particular, example 2, which uses the optimum additive ratio, shows the highest cycle average coulombic efficiency.
The above example 2 and comparative example 1 were applied to a zinc electrode soaking test, and zinc foils were placed in the electrolytes of example 2 and comparative example 1, respectively, and soaked for 30 days. The morphology of the zinc foil after soaking is shown in fig. 2, and after soaking in the electrolyte of comparative example 1, a large amount of flaky byproducts were observed on the surface of the zinc foil. These byproducts accumulate on the zinc foil surface in a disordered manner. Notably, on the zinc foil immersed in the electrolyte of experimental example 2, the surface of the zinc foil exhibited a horizontally uniform morphology.
Application of example 2 and comparative example 1 to zinc-zinc symmetrical batteryIn (C) 40m A/cm 2 And a current density of 20m A/cm 2 Is charged and discharged. Their respective electrochemical properties are shown in fig. 3, and short circuit occurs after a short 3-hour period using the electrolyte of comparative example 1; whereas in example 2 using the additive, the cycle duration was 180 hours, and the cycle life was significantly longer than in comparative example 1.
Example 2 and comparative example 1 above were applied to an aqueous zinc ion full cell assembly: commercial MnO 2 And uniformly mixing the powder, conductive carbon (super p) and a binder (pvc) according to a ratio of 7:2:1, adding NMP to prepare slurry, dripping the slurry on carbon cloth, and drying to obtain the positive electrode plate. Assembling the positive electrode shell, the positive electrode plate, the diaphragm, the electrolyte, the negative electrode plate, the gasket, the elastic piece and the negative electrode shell in sequence, and compacting the battery by using a tablet press to obtain the water-based zinc ion battery. The assembled battery was left to stand at room temperature for aging for 20 days, and after the aging process, charge and discharge were performed with a current density of 0.2A/g. The electrochemical properties of each of them are shown in FIG. 4, and the capacity retention of the full cell using the electrolyte of example 2 from 25 cycles to 150 cycles was 89%, whereas the capacity retention of the full cell of comparative example 1 under the same conditions was only 28%.
The embodiment shows that the method has simple preparation steps and has important significance for improving the dynamic performance of the water-based zinc ion battery and inhibiting the corrosion reaction and realizing mass industrialized production.
The foregoing description is only a few examples of the present application and is not intended to limit the present application in any way, and although the present application is disclosed in the preferred examples, it is not intended to limit the present application, and any person skilled in the art may make some changes or modifications to the disclosed technology without departing from the scope of the technical solution of the present application, and the technical solution is equivalent to the equivalent embodiments.
Claims (10)
1. The aqueous zinc ion battery electrolyte is characterized by comprising an organic additive and zinc salt, wherein the organic additive is a polyether compound;
the polyether compound contains a phosphate group.
2. The aqueous zinc-ion battery electrolyte of claim 1, wherein the electrolyte further comprises water;
the volume ratio of the organic additive in water is 0.3-2.5%;
preferably, the volume ratio of the organic additive in water is 0.5-2%;
preferably, the volume ratio of the organic additive in water is 0.8-1.2%.
3. The aqueous zinc-ion battery electrolyte of claim 1, wherein the phosphate groups are located at chain ends of molecular chains of the organic additive.
4. The aqueous zinc-ion battery electrolyte of claim 1, wherein the organic additive is structured as follows:
wherein n is a positive integer;
the weight average molecular weight of the organic additive is 250-750.
5. The aqueous zinc-ion battery electrolyte of claim 1, wherein the zinc salt is zinc sulfate and/or zinc triflate.
6. A method of preparing the aqueous zinc-ion battery electrolyte according to any one of claims 1 to 5, comprising: adding an organic additive into zinc salt aqueous solution, and stirring and dissolving to obtain the aqueous zinc ion battery electrolyte;
in the zinc salt aqueous solution, the mass molar concentration of zinc salt is 1-3mol/Kg;
the volume ratio of the organic additive to the water is 0.3-2.5%.
7. The method for preparing an aqueous zinc-ion battery electrolyte according to claim 6, wherein the volume ratio of the organic additive in water is 0.5% -2%.
8. The method for preparing an aqueous zinc-ion battery electrolyte according to claim 7, wherein the volume ratio of the organic additive in water is 0.8-1.2%.
9. An aqueous zinc-ion battery comprising a positive electrode, a negative electrode, a separator, and the electrolyte of any one of claims 1-5.
10. The aqueous zinc-ion battery of claim 9, wherein the aqueous zinc-ion battery comprises zinc-copper half cells, zinc-zinc symmetrical cells, mnO 2 And (3) a full battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311243994.5A CN117276698A (en) | 2023-09-25 | 2023-09-25 | Aqueous zinc ion battery electrolyte and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311243994.5A CN117276698A (en) | 2023-09-25 | 2023-09-25 | Aqueous zinc ion battery electrolyte and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117276698A true CN117276698A (en) | 2023-12-22 |
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| CN202311243994.5A Pending CN117276698A (en) | 2023-09-25 | 2023-09-25 | Aqueous zinc ion battery electrolyte and preparation method and application thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN117276698A (en) |
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2023
- 2023-09-25 CN CN202311243994.5A patent/CN117276698A/en active Pending
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