CN114988432A - Preparation and application of Prussian blue sodium ion battery - Google Patents
Preparation and application of Prussian blue sodium ion battery Download PDFInfo
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- CN114988432A CN114988432A CN202210646711.0A CN202210646711A CN114988432A CN 114988432 A CN114988432 A CN 114988432A CN 202210646711 A CN202210646711 A CN 202210646711A CN 114988432 A CN114988432 A CN 114988432A
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- prussian blue
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- sulfuric acid
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- 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 title claims abstract description 33
- 229960003351 prussian blue Drugs 0.000 title claims abstract description 33
- 239000013225 prussian blue Substances 0.000 title claims abstract description 33
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910001415 sodium ion Inorganic materials 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000003792 electrolyte Substances 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 239000011734 sodium Substances 0.000 claims abstract description 6
- 238000005303 weighing Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 54
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 16
- 238000010248 power generation Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- 238000009835 boiling Methods 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 10
- 150000002696 manganese Chemical class 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 159000000000 sodium salts Chemical class 0.000 claims description 10
- 239000004094 surface-active agent Substances 0.000 claims description 10
- 238000004146 energy storage Methods 0.000 claims description 9
- 239000000706 filtrate Substances 0.000 claims description 8
- 150000002500 ions Chemical class 0.000 claims description 7
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 5
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 5
- 235000011152 sodium sulphate Nutrition 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate group Chemical group S(=O)(=O)([O-])[O-] QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 5
- 239000002159 nanocrystal Substances 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 6
- 239000002253 acid Substances 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 5
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 239000007810 chemical reaction solvent Substances 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 abstract 2
- 239000000047 product Substances 0.000 description 8
- 239000002585 base Substances 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 230000002378 acidificating effect Effects 0.000 description 4
- 241000220317 Rosa Species 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 150000002697 manganese compounds Chemical class 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 102000004310 Ion Channels Human genes 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910021380 Manganese Chloride Inorganic materials 0.000 description 1
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000011565 manganese chloride Substances 0.000 description 1
- 235000002867 manganese chloride Nutrition 0.000 description 1
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 1
- 229910000357 manganese(II) sulfate Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 prussian blue compound Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C3/00—Cyanogen; Compounds thereof
- C01C3/08—Simple or complex cyanides of metals
- C01C3/12—Simple or complex iron cyanides
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
-
- 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 invention provides preparation and application of a Prussian blue sodium ion battery, and relates to the field of batteries. The preparation method and the application of the Prussian blue-based sodium ion battery comprise the following steps: s1, weighing 10 parts of Na4Fe (CN)6 as a single iron source. With the gradual increase of the synthesis temperature in the solution, the crystallinity, the particle size and the charge-discharge capacity of the product are improved, the crystallinity of the precipitated product is improved, the lattice defects are reduced, the high capacity and the excellent circulation stability of the synthesized Prussian blue material under low current are increased, ethanol is used as a reaction solvent, and the molecular configuration of a coating material PVP can be changed by the ethanol in the formation process of PBNPs, so that the steric hindrance between primary formed nano crystal nuclei is increased, the directional assembly of the nano crystal nuclei is hindered, and the ultra-small PBNPs and Na are obtained 4 Fe(CN) 6 Respectively with an acid andthe alkali reacts and keeps acidity after mixing, so that the reaction efficiency is improved, and simultaneously, the alkali is convenient to mix with the electrolyte of the battery.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to preparation and application of a Prussian blue sodium-ion battery.
Background
With the rapid development of new energy technologies such as electric vehicles and energy storage power stations, the demand for large-scale energy storage is increasing day by day. However, the existing energy storage technology, such as lithium ion battery, is difficult to meet the requirement of large-scale energy storage due to the scarcity and high price of lithium resources. Therefore, in recent years, people have expanded the field of vision to some alkali metals or high-valence metal elements with abundant resources and low cost, such as Na +, Mg2+, Zn2+, Al3+ and the like, so as to utilize the intercalation reaction of the ions to construct a new secondary battery system with low cost and high performance. The prussian blue compound has an open framework structure and a three-dimensional ion channel, is very suitable for the rapid migration of the large-size ions, and has attracted great attention as an embedded electrode with great potential in recent years.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides preparation and application of a Prussian blue sodium-ion battery, and solves the problem that the low conductivity of Prussian blue compounds affects the performance of the battery.
(II) technical scheme
In order to realize the purpose, the invention is realized by the following technical scheme: a Prussian blue sodium ion battery preparation method comprises the following steps:
s1, weighing 10 parts of Na4Fe (CN)6 as a single iron source, and dividing 10 parts of Na4Fe (CN)6 into two parts by mass, wherein the mass ratio is 6: 4;
s2, taking sulfuric acid and sodium hydroxide with the same molar mass, respectively adding the sulfuric acid and the sodium hydroxide into a stirring device, adding 60% of Na4Fe (CN)6 into 6 parts of sulfuric acid, adding 40% of Na4Fe (CN)6 into 4 parts of sodium hydroxide, and stirring for 10min under the boiling condition;
s3, after the reaction in the step S2 is finished, slowly mixing the two solutions, and fully stirring the two solutions at normal temperature to obtain a mixed solution;
s4, filtering the solution obtained in the step S3 to obtain filter residues, collecting the filtrate for later use, cleaning the filter residues with clear water, and adding 10 parts of 100% ethanol into the mixed solution to obtain a mixture;
s5, mixing the sodium salt, the surfactant and the deionized water with the mixture obtained in the S4, raising the temperature to 80-90 ℃ at the speed of 10 ℃/min, and keeping the temperature for 30 min.
S6, raising the temperature to 80-90 ℃, adding soluble divalent manganese salt, performing precipitation reaction to obtain a Prussian blue material, filtering the precipitate, and adding the filtrate in S4.
Preferably, the deionized water is 3 parts by mass, and the sulfuric acid is concentrated sulfuric acid.
Preferably, the sodium salt is at least one of sodium carbonate and sodium sulfate, and the surfactant is a sulfate.
Preferably, the divalent manganese salt is at least one of MnSO4 & 7H2O and MnCl2 & 6H 2O.
Preferably, the molar mass of the sulfuric acid is 18.4 mol/l.
The application of the Prussian blue sodium ion battery comprises a positive plate, a negative plate, an isolating membrane and electrolyte.
Preferably, the ion battery is used as an energy storage device in solar power generation, wind power generation, hydroelectric power generation, smart grid peak shaving, distributed power stations, backup power sources and communication base stations.
(III) advantageous effects
The invention provides preparation and application of a Prussian blue sodium ion battery. The method has the following beneficial effects:
1. with the gradual increase of the synthesis temperature in the solution, the crystallinity, the particle size and the charge-discharge capacity of the product are improved, the crystallinity of the precipitated product is improved, the lattice defects are reduced, and the synthesized Prussian blue material shows high capacity and excellent cycle stability under low current.
2. Ethanol is used as a reaction solvent, and the ethanol can change the molecular configuration of the coating material PVP in the formation process of the PBNPs, so that the steric hindrance between primary formed nanocrystal cores is increased, the directional assembly of the nanocrystal cores is hindered, and the ultra-small PBNPs are obtained.
3、Na 4 Fe(CN) 6 Are respectively connected withThe acid reacts with the base and remains acidic after mixing, which increases the efficiency of the reaction and facilitates mixing with the electrolyte of the battery.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the embodiment of the invention provides preparation of a Prussian blue sodium ion battery, which comprises the following steps: s1, weighing 10 parts of Na4Fe (CN)6 as a single iron source, and dividing 10 parts of Na4Fe (CN)6 into two parts by mass, wherein the mass ratio is 6: s2, respectively adding sulfuric acid and sodium hydroxide with the same molar mass into a stirring device, adding 60% Na4Fe (CN)6 into 6 parts of sulfuric acid, adding 3 parts deionized water by mass, wherein the sulfuric acid is concentrated sulfuric acid, the molar mass of the sulfuric acid is 18.4mol/l, adding 40% Na4Fe (CN)6 into 4 parts sodium hydroxide, stirring for 10min under the boiling condition, boiling the concentrated sulfuric acid as water, but generating a large amount of acidic steam at the same time, needing to avoid suction, slowly mixing the two solutions after the reaction in the step S3.S2, fully stirring at normal temperature to obtain a mixed solution, S4, filtering the solution in S3 to obtain filter residue, collecting the filtrate for later use, cleaning the filter residue with clear water, adding 10 parts of 100% ethanol into the mixed solution, obtaining a mixture, thereby increasing steric hindrance between primary-formed PB nanocrystal cores and hindering directional assembly thereof, thereby obtaining ultra-small PBNPs, S5. mixing sodium salt, surfactant and deionized water with the mixture obtained in S4, wherein the sodium salt is at least one of sodium carbonate and sodium sulfate, the surfactant is sulfate, the divalent manganese salt is at least one of MnSO 4.7H2O and MnCl 2.6H2O, the strong acid salt of the divalent manganese compound is easily soluble, the hydrated crystal thereof is light red or rose, the temperature is increased to 80 ℃ at the rate of 10 ℃/min, the temperature is kept for 30min, S6. after the temperature is increased to 80 ℃, the soluble divalent manganese salt is added, the gradual increase of the synthesis temperature, the crystallinity, the particle size and the charge-discharge capacity of the product are improved, the crystallinity of the precipitated product is improved and the lattice defects are reduced, the increased synthesized Prussian blue material shows high capacity and excellent cycle stability under small current, obtaining Prussian blue material through precipitation reaction, filtering the precipitate, and adding the filtrate in S4.
The application of the Prussian blue sodium ion battery comprises a positive plate, a negative plate, an isolating membrane and electrolyte, wherein the ion battery is used as energy storage equipment to be applied to solar power generation, wind power generation, hydroelectric power generation, smart grid peak regulation, distributed power stations, backup power supplies and communication base stations.
Example two:
the embodiment of the invention provides preparation of a Prussian blue sodium ion battery, which comprises the following steps: s1, weighing 10 parts of Na4Fe (CN)6 as a single iron source, and dividing 10 parts of Na4Fe (CN)6 into two parts by mass, wherein the mass ratio is 6: s2, taking sulfuric acid and sodium hydroxide with the same molar mass, respectively adding the sulfuric acid and the sodium hydroxide into a stirring device, adding Na4Fe (CN)6 with the content of 60% into 6 parts of sulfuric acid, adding 3 parts of deionized water by mass, wherein the sulfuric acid is concentrated sulfuric acid with the molar mass of 18.4mol/l, adding Na4Fe (CN)6 with the content of 40% into 4 parts of sodium hydroxide, stirring for 10min under a boiling condition, boiling the concentrated sulfuric acid as water, but generating a large amount of acidic vapor at the same time, needing to avoid suction, wherein the boiling point of 98% of the concentrated sulfuric acid is about 340 ℃, after the reaction in the step S3.S2 is completed, slowly mixing the two solutions, fully stirring the two solutions under a normal temperature environment to obtain a mixed solution, S4, filtering the solution in S3 to obtain filter residue, collecting the filter residue for later use, cleaning the filter residue by using clear water, adding 10 parts of 100% ethanol into the mixed solution, obtaining a mixture, thereby increasing steric hindrance between primary-formed PB nanocrystal cores and hindering directional assembly thereof, thereby obtaining ultra-small PBNPs, S5. mixing sodium salt, surfactant and deionized water with the mixture obtained in S4, wherein the sodium salt is at least one of sodium carbonate and sodium sulfate, the surfactant is sulfate, the divalent manganese salt is at least one of MnSO 4.7H2O and MnCl 2.6H2O, the strong acid salt of the divalent manganese compound is easily soluble, the hydrated crystal thereof is light red or rose, the temperature is increased to 90 ℃ at the rate of 10 ℃/min, the temperature is kept for 30min, S6. after the temperature is increased to 90 ℃, the soluble divalent manganese salt is added, the crystallization temperature is gradually increased, the particle size and the charge-discharge capacity of the product are improved, the crystallization degree of the precipitated product is improved and the lattice defects are reduced, the increased synthesized Prussian blue material shows high capacity and excellent cycle stability under small current, obtaining Prussian blue material through precipitation reaction, filtering the precipitate, and adding the filtrate in S4.
The application of the Prussian blue sodium ion battery comprises a positive plate, a negative plate, an isolating membrane and electrolyte, wherein the ion battery is used as energy storage equipment to be applied to solar power generation, wind power generation, hydroelectric power generation, smart grid peak regulation, distributed power stations, backup power supplies and communication base stations.
Example three:
the embodiment of the invention provides preparation of a Prussian blue sodium ion battery, which comprises the following steps: s1, weighing 10 parts of Na4Fe (CN)6 as a single iron source, and dividing 10 parts of Na4Fe (CN)6 into two parts by mass, wherein the mass ratio is 6: s2, taking sulfuric acid and sodium hydroxide with the same molar mass, respectively adding the sulfuric acid and the sodium hydroxide into a stirring device, adding Na4Fe (CN)6 with the content of 60% into 6 parts of sulfuric acid, adding 3 parts of deionized water by mass, wherein the sulfuric acid is concentrated sulfuric acid with the molar mass of 18.4mol/l, adding Na4Fe (CN)6 with the content of 40% into 4 parts of sodium hydroxide, stirring for 10min under a boiling condition, boiling the concentrated sulfuric acid as water, but generating a large amount of acidic vapor at the same time, needing to avoid suction, wherein the boiling point of 98% of the concentrated sulfuric acid is about 340 ℃, after the reaction in the step S3.S2 is completed, slowly mixing the two solutions, fully stirring the two solutions under a normal temperature environment to obtain a mixed solution, S4, filtering the solution in S3 to obtain filter residue, collecting the filter residue for later use, cleaning the filter residue by using clear water, adding 10 parts of 100% ethanol into the mixed solution, obtaining a mixture, thereby increasing steric hindrance between primary-formed PB nanocrystal cores and hindering directional assembly thereof, thereby obtaining ultra-small PBNPs, S5. mixing sodium salt, surfactant and deionized water with the mixture obtained in S4, wherein the sodium salt is at least one of sodium carbonate and sodium sulfate, the surfactant is sulfate, the divalent manganese salt is at least one of MnSO 4.7H2O and MnCl 2.6H2O, the strong acid salt of the divalent manganese compound is easily soluble, the hydrated crystal thereof is light red or rose, the temperature is increased to 85 ℃ at the rate of 10 ℃/min, the temperature is kept for 30min, S6. after the temperature is increased to 85 ℃, the soluble divalent manganese salt is added, the crystallization temperature is gradually increased, the crystallization degree, the particle size and the charge-discharge capacity of the product are improved, the crystallization degree of the precipitated product is improved and the lattice defects are reduced, the Prussian blue material which is increased to be synthesized shows high capacity and excellent cycle stability under small current, obtaining Prussian blue material through precipitation reaction, filtering the precipitate, and adding the filtrate in S4.
The application of the Prussian blue sodium ion battery comprises a positive plate, a negative plate, an isolating membrane and electrolyte, wherein the ion battery is used as energy storage equipment to be applied to solar power generation, wind power generation, hydroelectric power generation, smart grid peak regulation, distributed power stations, backup power supplies and communication base stations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The preparation method of the Prussian blue sodium-ion battery is characterized by comprising the following steps: the method comprises the following steps:
s1, weighing 10 parts of Na 4 Fe(CN) 6 As a single iron source, 10 parts of Na 4 Fe(CN) 6 The weight ratio of the two parts is 6: 4;
s2, taking sulfuric acid and sodium hydroxide with the same molar mass, respectively adding the sulfuric acid and the sodium hydroxide into a stirring device, and adding 60% of Na 4 Fe(CN) 6 Adding into 6 parts of sulfuric acid, addingNa in an amount of 40% 4 Fe(CN) 6 Adding into 4 parts of sodium hydroxide, and stirring for 10min under boiling condition;
s3, after the reaction in the S2 step is finished, slowly mixing the two solutions, and fully stirring the two solutions at normal temperature to obtain a mixed solution;
s4, filtering the solution obtained in the step S3 to obtain filter residues, collecting the filtrate for later use, cleaning the filter residues with clear water, and adding 10 parts of 100% ethanol into the mixed solution to obtain a mixture;
s5, mixing the sodium salt, the surfactant and the deionized water with the mixture obtained in the S4, raising the temperature to 80-90 ℃ at the speed of 10 ℃/min, and keeping the temperature for 30 min.
S6, raising the temperature to 80-90 ℃, adding soluble divalent manganese salt, performing precipitation reaction to obtain a Prussian blue material, filtering the precipitate, and adding the filtrate in S4.
2. The prussian blue sodium ion battery preparation of claim 1, wherein: the mass of the deionized water is 3 parts, and the sulfuric acid is concentrated sulfuric acid.
3. The prussian blue sodium ion battery preparation of claim 1, wherein: the sodium salt is at least one of sodium carbonate and sodium sulfate, and the surfactant is sulfate.
4. The prussian blue sodium ion battery preparation of claim 1, wherein: the divalent manganese salt is MnSO 4 ·7H 2 O、MnCl 2 ·6H 2 At least one of O.
5. The prussian blue sodium ion battery preparation of claim 1, wherein: the molar mass of the sulfuric acid is 18.4 mol/l.
6. The application of the Prussian blue sodium-ion battery is characterized in that: comprises a positive plate, a negative plate, an isolating membrane and electrolyte.
7. The use of a Prussian blue sodium-ion battery according to claim 6, wherein: the ion battery is used as energy storage equipment in solar power generation, wind power generation, hydroelectric power generation, smart grid peak regulation, distributed power stations, backup power supplies and communication base stations.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117430134A (en) * | 2023-12-21 | 2024-01-23 | 山东海化集团有限公司 | Preparation method of ferromanganese-based Prussian blue sodium electric positive electrode material and positive electrode material prepared by method |
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