CN117276695A - Electrolyte for water-based zinc ion battery, preparation method and zinc ion battery obtained by same - Google Patents
Electrolyte for water-based zinc ion battery, preparation method and zinc ion battery obtained by same Download PDFInfo
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- CN117276695A CN117276695A CN202311319031.9A CN202311319031A CN117276695A CN 117276695 A CN117276695 A CN 117276695A CN 202311319031 A CN202311319031 A CN 202311319031A CN 117276695 A CN117276695 A CN 117276695A
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- zinc
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- ion battery
- sulfolane
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 59
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 150000003751 zinc Chemical class 0.000 claims abstract description 13
- -1 zinc hydrate ion Chemical class 0.000 claims abstract description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 23
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 12
- 229960001763 zinc sulfate Drugs 0.000 claims description 10
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- XHGGRSXAIAPTFG-UHFFFAOYSA-L O.[Zn++].[O-]S(=O)(=O)C(F)(F)F.[O-]S(=O)(=O)C(F)(F)F Chemical compound O.[Zn++].[O-]S(=O)(=O)C(F)(F)F.[O-]S(=O)(=O)C(F)(F)F XHGGRSXAIAPTFG-UHFFFAOYSA-L 0.000 claims description 2
- 239000011889 copper foil Substances 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- DJWUNCQRNNEAKC-UHFFFAOYSA-L zinc acetate Chemical compound [Zn+2].CC([O-])=O.CC([O-])=O DJWUNCQRNNEAKC-UHFFFAOYSA-L 0.000 claims description 2
- DDFGPANTDSVNPE-UHFFFAOYSA-L zinc;dibromide;hydrate Chemical compound O.[Zn+2].[Br-].[Br-] DDFGPANTDSVNPE-UHFFFAOYSA-L 0.000 claims description 2
- CHSMNMOHKSNOKO-UHFFFAOYSA-L zinc;dichloride;hydrate Chemical compound O.[Cl-].[Cl-].[Zn+2] CHSMNMOHKSNOKO-UHFFFAOYSA-L 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 210000001787 dendrite Anatomy 0.000 abstract description 4
- 230000008021 deposition Effects 0.000 abstract description 3
- 238000007086 side reaction Methods 0.000 abstract description 3
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000011701 zinc Substances 0.000 description 12
- 229910052725 zinc Inorganic materials 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 239000002904 solvent Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 3
- 238000001878 scanning electron micrograph Methods 0.000 description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 2
- 150000003462 sulfoxides Chemical group 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- OCKGFTQIICXDQW-ZEQRLZLVSA-N 5-[(1r)-1-hydroxy-2-[4-[(2r)-2-hydroxy-2-(4-methyl-1-oxo-3h-2-benzofuran-5-yl)ethyl]piperazin-1-yl]ethyl]-4-methyl-3h-2-benzofuran-1-one Chemical compound C1=C2C(=O)OCC2=C(C)C([C@@H](O)CN2CCN(CC2)C[C@H](O)C2=CC=C3C(=O)OCC3=C2C)=C1 OCKGFTQIICXDQW-ZEQRLZLVSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000004807 desolvation Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229940118149 zinc sulfate monohydrate Drugs 0.000 description 1
- ZMLPZCGHASSGEA-UHFFFAOYSA-M zinc trifluoromethanesulfonate Chemical compound [Zn+2].[O-]S(=O)(=O)C(F)(F)F ZMLPZCGHASSGEA-UHFFFAOYSA-M 0.000 description 1
- CITILBVTAYEWKR-UHFFFAOYSA-L zinc trifluoromethanesulfonate Substances [Zn+2].[O-]S(=O)(=O)C(F)(F)F.[O-]S(=O)(=O)C(F)(F)F CITILBVTAYEWKR-UHFFFAOYSA-L 0.000 description 1
- RNZCSKGULNFAMC-UHFFFAOYSA-L zinc;hydrogen sulfate;hydroxide Chemical compound O.[Zn+2].[O-]S([O-])(=O)=O RNZCSKGULNFAMC-UHFFFAOYSA-L 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
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- 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
- H01M2300/0002—Aqueous electrolytes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses an electrolyte for a water-based zinc ion battery, a preparation method and the obtained zinc ion battery, wherein the electrolyte comprises a soluble zinc salt and 3-sulfolane, the concentration of the 3-sulfolane is 0.01-0.1mol/L, and the concentration of the soluble zinc salt is 0.5-2.0mol/L. The invention uses sulfonyl in 3-sulfolane to desolvate zinc hydrate ion, so that water molecules near the cathode are reduced, and meanwhile, zinc ion is guided to achieve the effect of uniform deposition, thereby effectively solving the problems of dendrite growth and side reaction.
Description
Technical Field
The invention relates to the technical field of water-based zinc ion batteries, in particular to electrolyte for a water-based zinc ion battery, a preparation method and the obtained zinc ion battery.
Background
With the large-scale application of secondary batteries, the lithium ion batteries, which are mainly used, begin to expose some difficult problems, such as toxic components, high price, and high safety. The water-based zinc ion battery attracts the eyes of researchers due to low cost, high safety and high resource quantity, but the water-based zinc ion battery has two problems on the road of large-scale commercial application, namely, the dendrite growth of the negative electrode cannot be controlled, and the related side reaction induced by the water electrolyte, such as hydrogen evolution corrosion, which cause the zinc negative electrode to be difficult to stably circulate for a long time.
To solve the above two problems, researchers have proposed various proposals such as coating or constructing a protective layer on the negative electrode, but in the volume change caused by repeated charge and discharge, the mechanical strength and adhesion of the protective layer are greatly reduced, so that the above two problems still occur slowly under long-term cycling of the battery. In contrast, the addition of small amounts of additives to conventional electrolytes provides an effective protection for the zinc anode over a relatively long cycle, which results in a high battery life at a low cost.
Chinese patent CN114039108A discloses a high Wen Shuiji resistant zinc ion battery electrolyte, which consists of A, B, C, D and water-soluble zinc salt, component a is nitrile solvent; the component B is sulfoxide solvent and/or amide solvent; the component C is solvent water; the component D is a phosphorus liquid flame retardant, and the volume ratio of the component A to the component B to the component C to the component D is 6:2:1:1 or 5:2:2:1. in the electrolyte, the sulfoxide solvent can form a stable SEI film on the surface of the zinc metal negative electrode to protect the zinc metal negative electrode from being corroded by water under the high-temperature condition. However, the electrolyte is excessively complex in components, excessively high in practical cost, insufficient in functional group utilization rate, and inconspicuous in performance at normal temperature.
Disclosure of Invention
The invention aims at: aiming at the problems, the invention provides an electrolyte for a water-based zinc ion battery, a preparation method and the obtained zinc ion battery, and the invention utilizes sulfonyl in 3-cyclobutene sulfone to desolvate hydrated zinc ions, so that water molecules near a negative electrode are reduced, and meanwhile, the zinc ions are guided to achieve the effect of uniform deposition, thereby effectively solving the problems of dendrite growth and side reaction.
The technical scheme adopted by the invention is as follows: an electrolyte for an aqueous zinc ion battery, which comprises a soluble zinc salt and 3-sulfolane, wherein the concentration of the 3-sulfolane is 0.01-0.1mol/L (for example, 0.01mol/L, 0.02mol/L, 0.05mol/L, 0.08mol/L, 0.1mol/L and the like) and the structural formula is shown as a formula (1):
further, the soluble zinc salt is at least one of zinc sulfate, zinc sulfate hydrate, zinc chloride hydrate, zinc bromide hydrate, zinc acetate hydrate, zinc trifluoromethane sulfonate, and zinc trifluoromethane sulfonate hydrate.
Further, the concentration of the soluble zinc salt is 0.5 to 2.0mol/L, and may be, for example, 0.5mol/L, 1mol/L, 1.2mol/L, 1.5mol/L, 1.8mol/L, 2mol/L, etc.
Preferably, the concentration of the soluble zinc salt is 1.0mol/L, and the concentration of the 3-cyclobutene sulfone is 0.05mol/L.
The invention further discloses a preparation method of the electrolyte for the water-based zinc ion battery, which comprises the following steps:
A. adding zinc salt into deionized water to prepare a basic electrolyte of the water-washing zinc ion battery;
B. adding 3-sulfolane into the basic electrolyte;
C. stirring uniformly, and standing.
The invention further provides a water-based zinc ion battery, and the electrolyte of the water-based zinc ion battery is the electrolyte.
Further, the water-based zinc ion battery is a symmetrical battery composed of zinc foil, a glass fiber diaphragm and electrolyte; or a half cell composed of zinc foil, current collector and electrolyte; or a zinc foil as a negative electrode, a manganese layered material or a vanadium layered material as a positive electrode, and an electrolyte.
Further, the working density of the water-based zinc ion battery is 0.1-10mA/cm 2 。
Further, the current collector is any one of copper foil, copper mesh, foam copper, stainless steel mesh, pot foil and foam nickel.
Further, the manganese-based layered material is Mn0 2 The vanadium layered material is V 2 0 5 Or NaV 3 O 8 。
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. in the electrolyte, the polarity of the sulfonyl carried on the sulfolane is extremely large, so that the zinc ions can be guided in the electrolyte and are induced to be uniformly deposited on a zinc anode, and in addition, the zinc ions are more prone to be combined with the sulfolane molecules, so that desolvation of the zinc ions is easier (the 3-sulfolane is used in a small amount and an effective SEI film cannot be formed to protect the anode, and the action mechanism is different from that of the patent technology in the background technology), so that the voltage window of the electrolyte is further widened, and the corrosion resistance and the cycle stability of the zinc anode are effectively improved;
2. the 3-sulfolane added in the invention has low price, mature synthesis process and environment protection, and can improve the electrochemical performance of the zinc cathode only by micro addition, and the 3-sulfolane electrolyte is assembled into a symmetrical battery which is 1mA/cm 2 Is cycled for more than 1000 hours at a current density, and has excellent cycle performance.
Drawings
FIG. 1 is a SEM image of the surface of a zinc sheet immersed for 5 days in the zinc sulfate base electrolyte and the electrolyte containing 3-sulfolane of example 1; wherein, FIG. a is a SEM image of the surface of a zinc sheet obtained in example 1 and immersed in an electrolyte containing 3-sulfolane addition for 5 days, and FIG. b is a SEM image of the surface of a zinc sheet obtained in example 1 and immersed in a 1mol/L zinc sulfate base electrolyte for 5 days;
FIG. 2 is a graph of time voltage versus constant current charge and discharge testing of commercial zinc foil and a symmetric cell assembled from the 1mol/L zinc sulfate base electrolyte and 3-sulfolane containing electrolyte of example 1, respectively.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
At room temperature, 3.6g of zinc sulfate monohydrate powder is added into 20mL of deionized water, and stirring is continued until the solution is clear, so as to obtain 1mol/L zinc sulfate base electrolyte (referred to as pure ZSO for short).
3-sulfolane powder is added into the zinc sulfate electrolyte, the solution is gently shaken until the solution is clear and transparent, and after standing, the stable electrolyte (abbreviated as With 0.01M 3-sulfolane) containing the 3-sulfolane additive is obtained, wherein the concentration of the 3-sulfolane in the electrolyte is 0.01mol/L.
Example 2
Example 2A parallel test similar to example 1 was conducted, wherein the concentration of 3-sulfolane in the electrolyte was 0.05mol/L, and the remaining operation steps were the same as those of example 1, to obtain a stable electrolyte containing 3-sulfolane additive (abbreviated as With 0.05M 3-sulfolane).
Example 3
Example 3A parallel test similar to example 1 was conducted, wherein the concentration of 3-sulfolane in the electrolyte was 0.1mol/L, and the remaining operation steps were the same as those of example 1, to obtain a stable electrolyte containing 3-sulfolane additive (abbreviated as With 0.1M 3-sulfolane).
Comparative example 1
Comparative example 1 was the same as example 1 except that 0.01mol/L of 3-cyclobutene sulfone was replaced with 0.01mol/L of dimethyl sulfoxide.
Comparative example 2
Comparative example 2 was the same as example 1 except that the concentration of 3-sulfolane was 0.2mol/L.
Performance inspection and result analysis
Commercial zinc foil was assembled as a negative electrode with the 1mol/L zinc sulfate electrolyte and the 3-sulfolane-containing electrolyte obtained in example 1, respectively, to a pair of batteries, and subjected to constant current charge and discharge test. The test method is that the test is carried out at 1 mA.cm -2 The current density of (2) is discharged for 1h, then charged for 1h, and then circulated, and the time-voltage comparison curve of the constant current charge-discharge test is shown in fig. 2. As can be seen from FIG. 2, the commercial zinc foil exhibited a longer cycle life and excellent voltage stability at 1 mA.cm in the 3-sulfolane-containing electrolyte obtained in example 1 -2 Is 1 mAh.cm -2 Can stably circulate for more than or equal to 1400 hours under the charge-discharge capacity; whereas commercial zinc foil exhibited poor cycle stability and life in the 1mol/L zinc sulfate electrolyte obtained in example 1 at 1mA cm -2 Is 1 mAh.cm -2 The cycle stability and life of the battery were far lower than those of the symmetrical battery obtained in example 1 and made of the electrolyte containing 3-sulfolane addition, and the battery was only cycled for less than 200 hours at the charge-discharge capacity.
Commercial zinc foil was immersed in the 1mol/L zinc sulfate electrolyte and the 3-sulfolane-containing electrolyte of example 1 for 5 days, respectively, and the zinc-deposited chip was subjected to SEM characterization, and the results are shown in FIG. 1. As can be seen from FIG. 1, the electrolyte after 3-sulfolane addition provided the zinc deposition was more compact and smoother, indicating that the 3-sulfolane addition reduced zinc dendrite formation, thereby ensuring long-term stable operation of the anode.
Accordingly, the cycle performance of comparative example 1 and comparative example 2 was tested according to the test method described above, and the test results were: comparative example 1 at 1 mA.cm -2 Is 1 mAh.cm -2 Can be stably cycled for less than 600 hours under the charge-discharge capacity of (2), and the comparative example is 1mA cm -2 Is 1 mAh.cm -2 Can be stably cycled for less than 800 hours under the charge-discharge capacity. Thereby making it possible toIt can be seen that the technical advantages of 3-sulfolane are very evident at a certain amount of use.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The electrolyte for the water-based zinc ion battery is characterized by comprising a soluble zinc salt and 3-sulfolane, wherein the concentration of the 3-sulfolane is 0.01-0.1mol/L, and the structural formula of the electrolyte is shown as the formula (1):
2. the electrolyte of claim 1 wherein the soluble zinc salt is at least one of zinc sulfate, zinc sulfate hydrate, zinc chloride hydrate, zinc bromide hydrate, zinc acetate hydrate, zinc triflate hydrate.
3. The electrolyte of claim 1 wherein the concentration of the soluble zinc salt is from 0.5 to 2.0mol/L.
4. The electrolyte of claim 1 wherein the concentration of the soluble zinc salt is 1.0mol/L and the concentration of the 3-cyclobutene sulfone is 0.05mol/L.
5. A method for producing the electrolyte according to any one of claims 1 to 4, comprising the steps of:
A. adding zinc salt into deionized water to prepare a basic electrolyte of the water-washing zinc ion battery;
B. adding 3-sulfolane into the basic electrolyte;
C. stirring uniformly, and standing.
6. An aqueous zinc ion battery, characterized in that the electrolyte of the aqueous zinc ion battery is the electrolyte of any one of the above claims 1-4.
7. The aqueous zinc-ion battery according to claim 6, wherein the aqueous zinc-ion battery is a symmetrical battery composed of zinc foil, glass fiber separator and electrolyte; or a half cell composed of zinc foil, current collector and electrolyte; or a zinc foil as a negative electrode, a manganese layered material or a vanadium layered material as a positive electrode, and an electrolyte.
8. The aqueous zinc-ion battery of claim 7, wherein the aqueous zinc-ion battery has an operating density of 0.1-10mA/cm 2 。
9. The aqueous zinc-ion battery according to claim 7, wherein the current collector is any one of copper foil, copper mesh, foam copper, stainless steel mesh, pot foil, and foam nickel.
10. The aqueous zinc-ion battery according to claim 7, wherein the manganese-based layered material is Mn0 2 The vanadium layered material is V 2 0 5 Or NaV 3 O 8 。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311319031.9A CN117276695A (en) | 2023-10-12 | 2023-10-12 | Electrolyte for water-based zinc ion battery, preparation method and zinc ion battery obtained by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311319031.9A CN117276695A (en) | 2023-10-12 | 2023-10-12 | Electrolyte for water-based zinc ion battery, preparation method and zinc ion battery obtained by same |
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| Publication Number | Publication Date |
|---|---|
| CN117276695A true CN117276695A (en) | 2023-12-22 |
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| CN202311319031.9A Pending CN117276695A (en) | 2023-10-12 | 2023-10-12 | Electrolyte for water-based zinc ion battery, preparation method and zinc ion battery obtained by same |
Country Status (1)
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| CN (1) | CN117276695A (en) |
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