CN111934033B - Method for protecting zinc ion battery electrode - Google Patents
Method for protecting zinc ion battery electrode Download PDFInfo
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- CN111934033B CN111934033B CN202010842902.5A CN202010842902A CN111934033B CN 111934033 B CN111934033 B CN 111934033B CN 202010842902 A CN202010842902 A CN 202010842902A CN 111934033 B CN111934033 B CN 111934033B
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- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000003792 electrolyte Substances 0.000 claims abstract description 45
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000011701 zinc Substances 0.000 claims abstract description 36
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 36
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 11
- 229960001763 zinc sulfate Drugs 0.000 claims description 11
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 11
- 150000003751 zinc Chemical class 0.000 claims description 10
- 239000007774 positive electrode material Substances 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000011267 electrode slurry Substances 0.000 claims description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 4
- BHHYHSUAOQUXJK-UHFFFAOYSA-L zinc fluoride Chemical compound F[Zn]F BHHYHSUAOQUXJK-UHFFFAOYSA-L 0.000 claims description 4
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 2
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims description 2
- 239000006258 conductive agent Substances 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000011572 manganese Substances 0.000 claims description 2
- 229960003351 prussian blue Drugs 0.000 claims description 2
- 239000013225 prussian blue Substances 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000004246 zinc acetate Substances 0.000 claims description 2
- 239000011592 zinc chloride Substances 0.000 claims description 2
- 235000005074 zinc chloride Nutrition 0.000 claims description 2
- ZMLPZCGHASSGEA-UHFFFAOYSA-M zinc trifluoromethanesulfonate Chemical compound [Zn+2].[O-]S(=O)(=O)C(F)(F)F ZMLPZCGHASSGEA-UHFFFAOYSA-M 0.000 claims description 2
- 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 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000006260 foam Substances 0.000 claims 1
- DCYOBGZUOMKFPA-UHFFFAOYSA-N iron(2+);iron(3+);octadecacyanide Chemical compound [Fe+2].[Fe+2].[Fe+2].[Fe+3].[Fe+3].[Fe+3].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] DCYOBGZUOMKFPA-UHFFFAOYSA-N 0.000 claims 1
- 210000001787 dendrite Anatomy 0.000 abstract description 10
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 210000004027 cell Anatomy 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 238000000840 electrochemical analysis Methods 0.000 description 4
- QGAVSDVURUSLQK-UHFFFAOYSA-N ammonium heptamolybdate Chemical group N.N.N.N.N.N.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo] QGAVSDVURUSLQK-UHFFFAOYSA-N 0.000 description 3
- 230000001351 cycling effect Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- -1 prussian blue compound Chemical class 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical compound [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
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- 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
- 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
- H01M2300/00—Electrolytes
- H01M2300/0002—Aqueous electrolytes
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- 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 a method for protecting a zinc ion battery electrode, wherein the zinc ion battery comprises a positive electrode, a negative electrode, a diaphragm between the positive electrode and the negative electrode and electrolyte, wherein polyoxometallate is added into the electrolyte; according to the invention, polyoxometallate is introduced into the electrolyte for the first time, and the growth of zinc dendrite is inhibited in the circulation process, so that the electrode of the zinc ion battery is protected, and the circulation life of the zinc ion battery is obviously prolonged.
Description
Technical Field
The invention relates to the technical field of zinc ion batteries, in particular to a method for protecting a zinc ion battery electrode.
Background
Energy crisis and environmental deterioration have prompted people to focus more and more on sustainable development and the use of high-cleanness energy, and have conducted intensive research on green renewable energy and efficient energy storage systems. Among them, rechargeable batteries are the most attractive energy storage and conversion technology, and a lithium ion battery capable of being repeatedly charged and discharged has good sustainability as a high-efficiency clean energy source, which is also the reason for the fire and heat development in the lithium ion battery industry at present. However, the conventional lithium ion battery has a great disadvantage in safety, and unstable lithium ions and organic electrolyte easily cause the battery to catch fire or even explode. To solve this problem, researchers have found an alternative to lithium ion batteries, namely zinc ion batteries. The zinc ion battery adopts water-based electrolyte, and is safe and environment-friendly. In addition, the zinc storage capacity is very rich, which is beneficial to further reducing the cost of the battery. In addition, the zinc ion battery has higher theoretical specific capacity (829mAh/g) and high power density, which means that the application potential of the zinc ion battery is very huge.
However, the cycle life of zinc ion batteries has been a problem for researchers. During charging and discharging processes of the zinc ion battery, a large amount of zinc dendrites are generated on the surface of an electrode, and the zinc dendrites are the root cause of low cycle life of the zinc ion battery and even possibly cause short circuit to thoroughly damage the battery. This greatly limits the development and application of zinc ion batteries. Therefore, it is urgent to find a method for protecting a zinc electrode by suppressing the growth of zinc dendrites.
Disclosure of Invention
The invention aims to provide a method for protecting a zinc ion battery electrode, which can inhibit the growth of zinc dendrites.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a method for protecting an electrode of a zinc ion battery, the zinc ion battery comprises a positive electrode, a negative electrode, a diaphragm between the positive electrode and the negative electrode and an electrolyte, wherein polyoxometallate is added into the electrolyte.
Preferably, the concentration of the polyoxometallate in the electrolyte is 0.1-2 mol/L.
Preferably, the polyoxometallate is selected from one or more of polymetallic molybdate, polymetallic tungstate, polymetallic vanadate, polymetallic niobate, polymetallic tantalate and polymetallic titanate.
Preferably, the positive electrode comprises a positive electrode current collector and positive electrode slurry coated on the surface of the positive electrode current collector, the positive electrode slurry comprises a positive electrode active material, a conductive agent and a binder, and the positive electrode active material is selected from any one of a manganese-based material, a vanadium-based material and a prussian blue compound.
Preferably, the negative electrode comprises any one of zinc flakes, zinc powder, electro-galvanized zinc, foamed zinc and zinc alloy material.
Preferably, the electrolyte further comprises soluble zinc salt, and the concentration of the soluble zinc salt in the electrolyte is 1-3 mol/L.
Preferably, the soluble zinc salt is selected from one or more of zinc sulfate, zinc chloride, zinc nitrate, zinc acetate, zinc fluoride, zinc hexafluoro-silicate and zinc trifluoromethanesulfonate.
Preferably, the diaphragm is a glass fiber diaphragm.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, polyoxometallate is introduced into the electrolyte for the first time, and the growth of zinc dendrite is inhibited in the circulation process, so that the electrode of the zinc ion battery is protected, and the circulation life of the zinc ion battery is obviously prolonged.
2. The electrolyte disclosed by the invention is simple in preparation formula and simple in preparation process operation, and the electrical cycle life and the cycle stability of the zinc ion battery prepared by using the electrolyte are effectively improved through electrochemical tests.
Drawings
Fig. 1 shows the electrode surface of the zinc symmetrical cell of example 1 after 10 weeks of circulation in a common electrolyte.
Fig. 2 is the electrode surface of the zinc symmetrical cell of example 1 after 10 weeks of cycling in an electrolyte with the addition of polyoxometallate.
FIG. 3 shows the case where the full cell of example 1, which was assembled with a general electrolyte and an electrolyte to which a polyacid was added, was cycled at a current density of 5000mA/g, respectively.
Fig. 4 is a time-voltage curve of the assembly of a zinc symmetric cell with the modified electrolyte of example 2.
Fig. 5 is a time-voltage curve of a zinc symmetric cell assembled with a common electrolyte in example 2.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the examples of the present invention, unless otherwise specified, the raw materials and reagents used were commercially available and the purity was analytical purity and above.
Example 1
The electrolyte for protecting the electrode of the zinc ion battery comprises soluble zinc salt, polyoxometallate and deionized water, wherein the zinc salt is zinc sulfate (ZnSO) 4 ) The polyoxometallate is ammonium heptamolybdate ((NH) 4 ) 6 Mo 7 O 24 ) Wherein zinc sulfate (ZnSO) 4 ) Ammonium heptamolybdate ((NH) at a concentration of 1 to 3mol/L 4 ) 6 Mo 7 O 24 ) The concentration of (b) is 0.1-2 mol/L, and the balance is water.
74mg of ammonium heptamolybdate and 2.87g of zinc sulfate were dissolved in 10mL of water, and stirred for 24 hours to obtain a target electrolyte.
The prepared target electrolyte is used for preparing a zinc symmetrical battery. The zinc ion battery of the embodiment comprises a pair of metal zinc sheets, electrolyte and a diaphragm, wherein the diaphragm is made of glass fiber, and button type battery assembly is completed in air.
The electrochemical test of the zinc symmetrical cell of the present example was carried out on a LAND test system, the test temperature being kept constant at 25 ℃.
As shown in FIG. 1, a common electrolyte (2.87g zinc sulfate dissolved in 10mL water) was used at 10mA/cm 2 The current density of the zinc ion battery electrode is lower than that of the zinc ion battery electrode after 10 circles of circulation. It can be seen from fig. 1 that there are a large number of zinc dendrites on the surface of the electrode.
As shown in FIG. 2, the target electrolyte used in the present example was at 10mA/cm 2 The current density of (a) is lower than that of the electrode surface of the zinc ion battery after 10 cycles of circulation. From fig. 2, it can be seen that the electrode surface is smooth and flat without dendrite generation.
The polyoxometallate shows larger electronegativity in the electrolyte, adsorbs a large amount of zinc ions, and forms a zinc-rich polyacid layer to cover the surface of the electrode. What is preferentially deposited on the electrode surface during cycling of the cell is zinc ions on the "zinc rich layer" rather than zinc ions in the electrolyte. The rate of deposition of zinc ions from the "zinc-rich layer" to the electrode surface is lower than the rate of deposition of zinc ions directly from the electrolyte due to the presence of the polyacid. In the process, the polyacid plays a role of an ion slow release agent, effectively slows down the deposition rate of zinc ions, enables the zinc ions to be deposited on the zinc electrode in a more orderly manner, and effectively avoids the uneven accumulation of the zinc ions, thereby reducing the risk of forming zinc dendrites.
The prepared target electrolyte is used for preparing a zinc ion battery.
The active substance of the positive electrode material of the zinc ion battery is prepared by adopting the following method:
(1) 1g of V 2 O 5 Dissolved in 20ml of water, 1g of NaCl was added, and the mixture was stirred for 72 hours. Filtering, washing and drying.
(2) The dried material was ground to a powder, blended with acetylene black, polytetrafluoroethylene (ptfe) in a 7: 2: 1, preparing slurry, coating the slurry on a stainless steel foil with the thickness of 0.01mm, and performing vacuum drying at the temperature of 80 ℃ for 12 hours to obtain the zinc ion battery anode material.
The zinc ion battery of the embodiment comprises the positive electrode material, the electrolyte, the negative electrode material and the diaphragm, wherein the negative electrode material is a metal zinc sheet, the diaphragm is glass fiber, and button battery assembly is completed in air.
The electrochemical test of the zinc ion battery of the embodiment is carried out on a LAND test system, the test temperature is kept at a constant temperature of 25 ℃, and the set voltage range is 0.2V-1.6V.
FIG. 3 shows the cycling of a full cell assembled using a common electrolyte (2.87g zinc sulfate in 10mL water) and the target electrolyte of this example at a current density of 5000 mA/g. The capacity of the zinc ion battery using the common electrolyte decays very quickly, and the capacity retention rate after 600 cycles is 28.4%. The capacity retention rate of the zinc-ion battery using the target electrolyte of this example after 600 cycles was 76.4%. Therefore, the electrolyte disclosed by the invention effectively inhibits the growth of zinc dendrites and prolongs the cycle life of the zinc ion battery.
Example 2
The electrolyte for protecting the electrode of the zinc ion battery in the embodiment is composed of soluble zinc salt, polyoxometallate and deionized water, wherein the zinc salt is zinc sulfate (ZnSO) 4 ) The polyoxometallate is phosphomolybdic dodecanoic acid (H) 5 PMo 12 O 41 ) Wherein zinc sulfate (ZnSO) 4 ) The concentration of (A) is 1-3 mol/L, phosphomolybdic dodecanoic acid (H) 5 PMo 12 O 41 ) The concentration of (b) is 0.1-2 mol/L, and the balance is water.
368mg of phosphomolybdic dodecanoic acid and 2.87g of zinc sulfate were dissolved in 10mL of water, and stirred for 24 hours to obtain the target electrolyte.
The target electrolyte prepared in the above manner in this example was used to prepare a zinc symmetrical battery. The zinc ion battery of the embodiment comprises a pair of metal zinc sheets, electrolyte and a diaphragm, wherein the diaphragm is made of glass fiber, and button type battery assembly is completed in air.
The electrochemical test of the zinc symmetrical cell of the present example was carried out on a LAND test system, the test temperature being kept constant at 25 ℃.
Fig. 4 is a time-voltage curve of a zinc symmetrical cell assembled by using the modified electrolyte, and fig. 5 is a time-voltage curve of a zinc symmetrical cell assembled by using a common electrolyte (prepared by dissolving 2.87g of zinc sulfate in 10mL of water). It can be seen that the cycle life of the zinc symmetrical battery is obviously prolonged after the polyoxometallate is modified.
The foregoing embodiments illustrate the principles, principal features and advantages of the invention, and it will be understood by those skilled in the art that the invention is not limited to the foregoing embodiments, which are merely illustrative of the principles of the invention, and that various changes and modifications may be made therein without departing from the scope of the principles of the invention.
Claims (7)
1. A method for protecting an electrode of a zinc ion battery, wherein the zinc ion battery comprises a positive electrode, a negative electrode, a diaphragm between the positive electrode and the negative electrode and electrolyte, and is characterized in that polyoxometallate is added into the electrolyte, and the polyoxometallate is selected from one or more of polyoxometallate, polyoxometallate and polyoxometallate.
2. The method for protecting the electrode of the zinc-ion battery as claimed in claim 1, wherein the concentration of the polyoxometallate in the electrolyte is 0.1-2 mol/L.
3. The method for protecting the electrode of the zinc-ion battery according to claim 1, wherein the positive electrode comprises a positive electrode current collector and positive electrode slurry coated on the surface of the positive electrode current collector, the positive electrode slurry comprises a positive electrode active material, a conductive agent and a binder, and the positive electrode active material is selected from any one of a manganese-based material, a vanadium-based material and a prussian blue-based compound.
4. The method of claim 1, wherein the negative electrode comprises any one of zinc flake, zinc powder, electrogalvanized zinc, zinc foam, and zinc alloy material.
5. The method of claim 1, wherein the electrolyte further comprises a soluble zinc salt, and the concentration of the soluble zinc salt in the electrolyte is 1-3 mol/L.
6. The method of claim 5, wherein the soluble zinc salt is selected from one or more of zinc sulfate, zinc chloride, zinc nitrate, zinc acetate, zinc fluoride, zinc hexafluoro-sulfonate, and zinc trifluoromethanesulfonate.
7. The method of claim 1, wherein the separator is a glass fiber separator.
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| CN114597407B (en) * | 2020-12-07 | 2024-03-19 | 中国科学院大连化学物理研究所 | Zinc cathode and preparation method and application thereof |
| CN112751086A (en) * | 2020-12-28 | 2021-05-04 | 陈璞 | Zinc ion battery |
| CN112614985B (en) * | 2021-01-11 | 2022-05-24 | 江苏师范大学 | Aqueous zinc ion battery and preparation method of positive electrode |
| CN113161631B (en) * | 2021-06-16 | 2023-04-11 | 中南大学 | Additive-containing aqueous zinc ion battery electrolyte, preparation method thereof and battery |
| CN114665153A (en) * | 2021-12-21 | 2022-06-24 | 浙江金羽新能源科技有限公司 | Zinc ion battery electrolyte containing additive, preparation method thereof and zinc ion battery |
| CN114899347B (en) * | 2022-05-13 | 2023-11-10 | 吉林大学 | Application of surfactant-embedded multi-metal oxygen cluster compound in zinc electrode protection, zinc-based composite pole piece, preparation method and application |
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| CN101783429B (en) * | 2009-01-16 | 2011-11-09 | 北京化工大学 | Zinc-oxygen single flow battery |
| KR101758138B1 (en) * | 2009-06-17 | 2017-07-14 | 소니 주식회사 | Nonaqueous electrolyte battery, positive electrode for nonaqueous electrolyte battery, negative electrode for nonaqueous electrolyte battery, separator for nonaqueous electrolyte battery, electrolyte for nonaqueous electrolyte battery, and method for producing separator for nonaqueous electrolyte battery |
| CN102097662B (en) * | 2009-12-11 | 2013-05-29 | 清华大学深圳研究生院 | Zinc ion battery |
| JP5533321B2 (en) * | 2010-03-02 | 2014-06-25 | ソニー株式会社 | Nonaqueous electrolyte and nonaqueous electrolyte battery |
| JP5463957B2 (en) * | 2010-03-02 | 2014-04-09 | ソニー株式会社 | Non-aqueous electrolyte and battery |
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| CN103700820B (en) * | 2014-01-07 | 2016-06-22 | 中国科学院化学研究所 | A kind of lithium ion selenium battery with long service life |
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