CN214336748U - Prussian blue sodium ion battery - Google Patents
Prussian blue sodium ion battery Download PDFInfo
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- CN214336748U CN214336748U CN202120447883.6U CN202120447883U CN214336748U CN 214336748 U CN214336748 U CN 214336748U CN 202120447883 U CN202120447883 U CN 202120447883U CN 214336748 U CN214336748 U CN 214336748U
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- sodium
- ion battery
- current collector
- prussian blue
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- 229910001415 sodium ion Inorganic materials 0.000 title claims abstract description 61
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 229960003351 prussian blue Drugs 0.000 title claims description 39
- 239000013225 prussian blue Substances 0.000 title claims description 39
- 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 abstract 4
- 239000000463 material Substances 0.000 claims abstract description 44
- 239000003792 electrolyte Substances 0.000 claims abstract description 35
- 239000011244 liquid electrolyte Substances 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 229920000642 polymer Polymers 0.000 claims abstract description 26
- 239000011159 matrix material Substances 0.000 claims abstract description 25
- 239000011149 active material Substances 0.000 claims abstract description 21
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 238000000576 coating method Methods 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims description 219
- 239000007774 positive electrode material Substances 0.000 claims description 47
- VRWKTAYJTKRVCU-UHFFFAOYSA-N iron(6+);hexacyanide Chemical compound [Fe+6].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] VRWKTAYJTKRVCU-UHFFFAOYSA-N 0.000 claims description 41
- 239000007773 negative electrode material Substances 0.000 claims description 40
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 28
- 229910052782 aluminium Inorganic materials 0.000 claims description 28
- 239000011888 foil Substances 0.000 claims description 28
- UETZVSHORCDDTH-UHFFFAOYSA-N iron(2+);hexacyanide Chemical compound [Fe+2].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] UETZVSHORCDDTH-UHFFFAOYSA-N 0.000 claims description 22
- 238000010521 absorption reaction Methods 0.000 claims description 20
- 239000012528 membrane Substances 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 8
- 239000011889 copper foil Substances 0.000 claims description 8
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 7
- 229910052708 sodium Inorganic materials 0.000 claims description 7
- 239000011734 sodium Substances 0.000 claims description 7
- 239000001913 cellulose Substances 0.000 claims description 6
- 229920002678 cellulose Polymers 0.000 claims description 6
- FPBMTPLRBAEUMV-UHFFFAOYSA-N nickel sodium Chemical compound [Na][Ni] FPBMTPLRBAEUMV-UHFFFAOYSA-N 0.000 claims description 6
- 239000002033 PVDF binder Substances 0.000 claims description 4
- ZIALXKMBHWELGF-UHFFFAOYSA-N [Na].[Cu] Chemical compound [Na].[Cu] ZIALXKMBHWELGF-UHFFFAOYSA-N 0.000 claims description 4
- KSHPUQQHKKJVIO-UHFFFAOYSA-N [Na].[Zn] Chemical compound [Na].[Zn] KSHPUQQHKKJVIO-UHFFFAOYSA-N 0.000 claims description 4
- 229910021385 hard carbon Inorganic materials 0.000 claims description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- MJEPCYMIBBLUCJ-UHFFFAOYSA-K sodium titanium(4+) phosphate Chemical compound P(=O)([O-])([O-])[O-].[Ti+4].[Na+] MJEPCYMIBBLUCJ-UHFFFAOYSA-K 0.000 claims description 4
- OOIOHEBTXPTBBE-UHFFFAOYSA-N [Na].[Fe] Chemical group [Na].[Fe] OOIOHEBTXPTBBE-UHFFFAOYSA-N 0.000 claims description 3
- GFORUURFPDRRRJ-UHFFFAOYSA-N [Na].[Mn] Chemical compound [Na].[Mn] GFORUURFPDRRRJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910001593 boehmite Inorganic materials 0.000 claims description 3
- IYPQZXRHDNGZEB-UHFFFAOYSA-N cobalt sodium Chemical compound [Na].[Co] IYPQZXRHDNGZEB-UHFFFAOYSA-N 0.000 claims description 3
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims description 3
- 239000002608 ionic liquid Substances 0.000 claims description 3
- 239000002121 nanofiber Substances 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 229920005569 poly(vinylidene fluoride-co-hexafluoropropylene) Polymers 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 229910021384 soft carbon Inorganic materials 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims 2
- 238000004804 winding Methods 0.000 claims 1
- 238000004146 energy storage Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005213 imbibition Methods 0.000 abstract 1
- 238000003475 lamination Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- VWIWVZGCURHWDR-UHFFFAOYSA-K [Na+].[Mn+2].O[Mn](=O)(=O)C#N.O[Mn](=O)(=O)C#N.O[Mn](=O)(=O)C#N.[O-][Mn](=O)(=O)C#N.[O-][Mn](=O)(=O)C#N.[O-][Mn](=O)(=O)C#N Chemical compound [Na+].[Mn+2].O[Mn](=O)(=O)C#N.O[Mn](=O)(=O)C#N.O[Mn](=O)(=O)C#N.[O-][Mn](=O)(=O)C#N.[O-][Mn](=O)(=O)C#N.[O-][Mn](=O)(=O)C#N VWIWVZGCURHWDR-UHFFFAOYSA-K 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- YXLXNENXOJSQEI-UHFFFAOYSA-L Oxine-copper Chemical compound [Cu+2].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 YXLXNENXOJSQEI-UHFFFAOYSA-L 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- LBSANEJBGMCTBH-UHFFFAOYSA-N manganate Chemical compound [O-][Mn]([O-])(=O)=O LBSANEJBGMCTBH-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
Abstract
The utility model relates to a prussian blue class sodium ion battery, book core in the battery include anodal current collector layer, anodal material layer, electrolyte layer, negative pole material layer and the negative pole current collector layer that sets gradually, the electrolyte layer is the liquid film layer that diaphragm and liquid electrolyte become, the diaphragm comprises polymer matrix layer and surface imbibition coating, and sequential coiling or lamination equipment in proper order between each layer in the electric core, active material in the anodal material layer are prussian blue class anodal material, and the battery of preparation is water system sodium ion battery or organic sodium ion battery, prussian blue class sodium ion battery low price, and electrochemical performance is good, safe and reliable, and then makes its large-scale use that can accomplish the energy storage field.
Description
The technical field is as follows:
the utility model belongs to the technical field of the battery technique and specifically relates to a prussian blue class sodium ion battery.
(II) background technology:
in recent years, clean energy such as wind energy and solar energy is rapidly developed, and the power generation amount is continuously increased, but when the intermittent energy is incorporated into a power grid, the problem of unstable frequency is easily caused. In order to ensure the smooth operation of the power grid, the balance between the power generation and the load needs to be maintained in real time, and the battery energy storage provides possibility for the efficient peak load regulation and frequency modulation of the power grid. However, the existing energy storage batteries include lithium ion batteries, molten sodium batteries and redox flow batteries, and the manufacturing cost of the batteries is high, which prevents the batteries from being applied to the power grid on a large scale.
Room temperature sodium ion batteries are one of the most competitive batteries for developing large-scale stationary energy storage systems. Similar to lithium ion batteries, in the charging and discharging process, sodium ions are embedded and separated between a positive electrode and a negative electrode to form a passage in the battery, and electrons are lost and transmitted on the electrodes to generate current in an external circuit. In the process, the positive electrode material often provides sodium ions required by the battery during operation, and determines the output voltage which can be provided by the battery to a great extent, and is an important component of the battery and a research focus of the sodium ion battery, so that the type selection of the positive electrode material of the sodium ion battery determines not only the energy density and the power density of the sodium ion battery, but also the cost of the sodium ion battery, and whether the sodium ion battery can be applied in the energy storage field in a large scale.
(III) contents of the utility model:
the utility model aims to solve the technical problem that a prussian blue class sodium ion battery is provided.
The technical scheme of the utility model:
a Prussian blue type sodium ion battery is characterized in that a roll core in the battery comprises a positive electrode current collector layer, a positive electrode material layer, an electrolyte layer, a negative electrode material layer and a negative electrode current collector layer which are sequentially arranged, the positive electrode material layer is arranged on two symmetrical surfaces of a positive electrode current collector, the thickness of the positive electrode material layer on the two symmetrical surfaces is the same as that of the material, the negative electrode material layer is arranged on two symmetrical surfaces of a negative electrode current collector, the thickness of the negative electrode material layer on the two symmetrical surfaces is the same as that of the material, active materials in the positive electrode material layer are sodium iron hexacyanoferrate (NaFeHCF), sodium nickel hexacyanoferrate (NaNiHCF), sodium copper hexacyanoferrate (NaCuHCF), sodium manganese hexacyanoferrate (NaMnHCF), sodium zinc hexacyanoferrate (NaZnHCF), sodium cobalt hexacyanoferrate (NaCoHCMn), sodium nickel hexacyanoferrate (NaNiHCMn), sodium hexacyanoferrate (NaHCMn) or sodium hexacyanoferrate (NaHCMn), the active material in the negative electrode material layer is hard carbon, soft carbon, sodium titanium phosphate or sodium manganese hexacyano-manganate (NaMnHCMn), the electrolyte layer is a liquid film layer consisting of a diaphragm and a liquid electrolyte, the diaphragm consists of a polymer matrix layer and a surface liquid absorption coating, and all layers in the battery core are sequentially wound or laminated and assembled.
Preferably, in the prussian blue sodium ion battery, the positive current collector layer is a plain aluminum foil, a carbon-coated aluminum foil, a microporous aluminum foil or a foamed aluminum foil.
Preferably, in the prussian blue sodium ion battery, the polymer matrix layer is a microporous polyolefin film, a nonwoven fabric film, a nanofiber film or cellulose separator paper.
Preferably, in the prussian blue sodium ion battery, the surface liquid absorption coating is made of polyvinylidene fluoride, polyvinylidene fluoride-hexafluoropropylene, silica, boehmite or polytetrafluoroethylene.
Preferably, in the prussian blue sodium ion battery, the liquid electrolyte is an organic liquid electrolyte, an aqueous liquid electrolyte or an ionic liquid electrolyte.
Preferably, in the prussian blue sodium ion battery, the negative current collector layer is a plain aluminum foil, a carbon-coated aluminum foil, a microporous aluminum foil, a foamed aluminum foil, a plain copper foil, a carbon-coated copper foil or a microporous copper foil.
Preferably, in the prussian blue sodium ion battery, the thickness of the positive electrode current collector layer is 5 to 50 μm, and the thickness of the negative electrode current collector layer is 4 to 50 μm.
Preferably, in the prussian blue sodium ion battery, the thickness of the positive electrode material layer is 50 to 800 μm, and the thickness of the negative electrode material layer is 50 to 800 μm.
Preferably, in the prussian blue sodium ion battery, the thickness of the electrolyte layer is 6 to 50 μm.
The utility model has the advantages that:
according to the Prussian blue type sodium ion battery, the active material in the positive electrode material layer adopts sodium with rich natural reserves as an energy storage element, so that the cost of the sodium ion battery is greatly reduced, and meanwhile, the battery prepared by using the iron-based or manganese-based Prussian blue type positive electrode material with low price is an aqueous sodium ion battery or an organic sodium ion battery; the positive current collector layer and the negative current collector layer both adopt aluminum foils, so that the manufacturing cost of the battery is greatly reduced, and the diaphragm adopts high-molecular polymers and ceramic materials as coating materials, so that the contact distance between the positive material layer and the negative material layer of the sodium-ion battery is shortened, the interface impedance of the sodium-ion battery is reduced, and the cycle stability and the safety of the sodium-ion battery can be improved.
(IV) description of the drawings:
fig. 1 is a schematic structural diagram of a prussian blue sodium-ion battery according to the present invention;
fig. 2 is a schematic structural view of the positive current collector and the symmetrical two-sided positive material layer of the present invention;
fig. 3 is the structure schematic diagram of the negative current collector and the symmetric two-sided negative material layer.
In the figure: 1-positive electrode material layer 2-electrolyte layer 3-negative electrode material layer 4-positive electrode current collector layer
5-negative current collector layer 6-liquid electrolyte 7-surface liquid absorption coating 8-diaphragm
(V) specific embodiment:
example 1
As shown in fig. 1, a prussian blue sodium ion battery, in which a roll core includes a positive current collector layer 4, a positive material layer 1, an electrolyte layer 2, a negative material layer 3, and a negative current collector layer 5, which are sequentially disposed; the positive electrode material layers are arranged on two symmetrical surfaces of a positive electrode current collector, the thickness and the material of the positive electrode material layers on the two symmetrical surfaces are the same (shown in figure 2), the negative electrode material layers are arranged on two symmetrical surfaces of a negative electrode current collector, the thickness and the material of the negative electrode material layers on the two symmetrical surfaces are the same (shown in figure 3), the positive electrode current collector layer 4 is a common plain aluminum foil and has the thickness of 16 mu m, the active material in the positive electrode material layer 1 is sodium iron hexacyanoferrate (NaFeHCF), the thickness of the positive electrode material layer is 800 mu m, the electrolyte layer 2 is a liquid film layer consisting of a liquid electrolyte 6 and a diaphragm 8, the liquid electrolyte 6 is an organic liquid electrolyte, the diaphragm 8 consists of a polymer matrix layer and a surface liquid absorption coating 7, the main body of the diaphragm 8 is a polymer layer, the polymer matrix layer is a microporous polyolefin film, and the surface liquid absorption coating 7 of the diaphragm 8 is polyvinylidene fluoride, the thickness of the electrolyte layer 2 is 26 micrometers, the active material in the negative electrode material layer 3 is hard carbon, the thickness of the negative electrode material layer is 520 micrometers, the thickness of the negative electrode current collector layer is a common plain aluminum foil and is 16 micrometers, the prepared Prussian blue sodium ion battery is subjected to charge and discharge tests at 0.5C/0.5C, the cycle is 1500 circles, and the capacity retention rate is more than or equal to 80%.
Example 2
As shown in fig. 1, a prussian blue sodium ion battery, in which a roll core includes a positive current collector layer 4, a positive material layer 1, an electrolyte layer 2, a negative material layer 3, and a negative current collector layer 5, which are sequentially disposed; the positive electrode material layers are arranged on two symmetrical surfaces of a positive electrode current collector, the thickness and the material of the positive electrode material layers on the two symmetrical surfaces are the same (shown in figure 2), the negative electrode material layers are arranged on two symmetrical surfaces of a negative electrode current collector, the thickness and the material of the negative electrode material layers on the two symmetrical surfaces are the same (shown in figure 3), the positive electrode current collector layer 4 is a carbon-coated aluminum foil with the thickness of 26 mu m, the active material in the positive electrode material layer 1 is sodium nickel hexacyanoferrate (NaNiHCF), the thickness of the positive electrode material layer is 650 mu m, the electrolyte layer 2 is a liquid film layer consisting of a liquid electrolyte 6 and a diaphragm 8, the liquid electrolyte 6 is an aqueous liquid electrolyte, the diaphragm 8 consists of a polymer matrix layer and a surface liquid absorption coating layer 7, the main body of the diaphragm 8 is a matrix layer, the polymer matrix layer is made of cellulose diaphragm paper, and the surface liquid absorption coating 7 of the diaphragm 8 is made of boehmite, the thickness of the electrolyte layer 2 is 34 micrometers, the active material in the negative electrode material layer 3 is titanium sodium phosphate, the thickness of the negative electrode material layer is 800 micrometers, the thickness of the negative electrode current collector layer is a carbon-coated aluminum foil and is 26 micrometers, the prepared Prussian blue sodium ion battery is subjected to 0.5C/0.5C charging and discharging tests, the cycle is 2000 circles, and the capacity retention rate is more than or equal to 80%.
Example 3
As shown in fig. 1, a prussian blue sodium ion battery, in which a roll core includes a positive current collector layer 4, a positive material layer 1, an electrolyte layer 2, a negative material layer 3, and a negative current collector layer 5, which are sequentially disposed; the positive electrode material layers are arranged on two symmetrical surfaces of a positive electrode current collector, the thickness and the material of the positive electrode material layers on the two symmetrical surfaces are the same (shown in figure 2), the negative electrode material layers are arranged on two symmetrical surfaces of a negative electrode current collector, the thickness and the material of the negative electrode material layers on the two symmetrical surfaces are the same (shown in figure 3), the positive electrode current collector layer 4 is a microporous aluminum foil with the thickness of 18 mu m, the active material in the positive electrode material layer 1 is sodium copper hexacyanoferrate (NaCuHCF), the thickness of the positive electrode material layer is 350 mu m, the electrolyte layer 2 is a liquid film layer consisting of a liquid electrolyte 6 and a diaphragm 8, the liquid electrolyte 6 is an aqueous liquid electrolyte, the diaphragm 8 consists of a polymer matrix layer and a surface liquid absorption coating layer 7, the main body of the polymer matrix layer is a polymer matrix layer, the polymer matrix layer is made of cellulose diaphragm paper, and the surface liquid absorption coating 7 of the diaphragm 8 is made of silicon dioxide, the thickness of the electrolyte layer 2 is 50 microns, the active material in the negative electrode material layer 3 is sodium manganese hexacyano-manganate (NaMnHCMn), the thickness of the negative electrode material layer is 380 microns, the thickness of the negative electrode current collector layer is a microporous aluminum foil and is 16 microns, the prepared Prussian blue sodium-ion battery is subjected to charge and discharge test at 0.5C/0.5C, the cycle is 1800 circles, and the capacity retention rate is more than or equal to 80%.
Example 4
As shown in fig. 1, a prussian blue sodium ion battery, in which a roll core includes a positive current collector layer 4, a positive material layer 1, an electrolyte layer 2, a negative material layer 3, and a negative current collector layer 5, which are sequentially disposed; the positive electrode material layers are arranged on two symmetrical surfaces of a positive electrode current collector, the thickness and the material of the positive electrode material layers on the two symmetrical surfaces are the same (shown in figure 2), the negative electrode material layers are arranged on two symmetrical surfaces of a negative electrode current collector, the thickness and the material of the negative electrode material layers on the two symmetrical surfaces are the same (shown in figure 3), the positive electrode current collector layer 4 is a foamed aluminum foil and has the thickness of 50 mu m, the active material in the positive electrode material layer 1 is sodium manganese hexacyanoferrate (NaMnHCF), the thickness of the positive electrode material layer is 250 mu m, the electrolyte layer 2 is a liquid film layer consisting of a liquid electrolyte 6 and a diaphragm 8, the liquid electrolyte 6 is an ionic liquid electrolyte, the diaphragm 8 consists of a polymer matrix layer and a surface liquid absorption coating layer 7, the main body of the polymer matrix layer is a polymer matrix layer, the polymer matrix layer is a non-woven fabric film, the surface liquid absorption coating layer 7 of the diaphragm 8 is polyvinylidene fluoride-hexafluoropropylene, the thickness of the electrolyte layer 2 is 20 micrometers, the active material in the negative electrode material layer 3 is soft carbon, the thickness of the negative electrode material layer is 180 micrometers, the thickness of the negative electrode current collector layer is a foamed aluminum foil and is 50 micrometers, the prepared Prussian blue type sodium ion battery is subjected to 0.5C/0.5C charging and discharging tests, the cycle is 1000 circles, and the capacity retention rate is more than or equal to 80%.
Example 5
As shown in fig. 1, a prussian blue sodium ion battery, in which a roll core includes a positive current collector layer 4, a positive material layer 1, an electrolyte layer 2, a negative material layer 3, and a negative current collector layer 5, which are sequentially disposed; the positive electrode material layers are arranged on two symmetrical surfaces of a positive electrode current collector, the thickness and the material of the positive electrode material layers on the two symmetrical surfaces are the same (shown in figure 2), the negative electrode material layers are arranged on two symmetrical surfaces of a negative electrode current collector, the thickness and the material of the negative electrode material layers on the two symmetrical surfaces are the same (shown in figure 3), the positive electrode current collector layer 4 is a common plain aluminum foil and is 16 mu m thick, the active material in the positive electrode material layer 1 is sodium zinc hexacyanoferrate (NaZnHCF), the thickness of the positive electrode material layer is 150 mu m, the electrolyte layer 2 is a liquid film layer consisting of a liquid electrolyte 6 and a diaphragm 8, the liquid electrolyte 6 is an organic liquid electrolyte, the diaphragm 8 consists of a polymer matrix layer and a surface liquid absorption coating layer 7, the main body of the diaphragm 8 is a matrix layer, the polymer matrix layer is a nano fiber film, and the surface liquid absorption coating 7 of the diaphragm 8 is made of polytetrafluoroethylene, the thickness of the electrolyte layer 2 is 12 micrometers, the active material in the negative electrode material layer 3 is hard carbon, the thickness of the negative electrode material layer is 80 micrometers, the thickness of the negative electrode current collector layer is a common smooth-surface copper foil and is 8 micrometers, the prepared Prussian blue sodium-ion battery is subjected to 0.5C/0.5C charge-discharge test, the cycle is 1200 circles, and the capacity retention rate is more than or equal to 80%.
Example 6
As shown in fig. 1, a prussian blue sodium ion battery, in which a roll core includes a positive current collector layer 4, a positive material layer 1, an electrolyte layer 2, a negative material layer 3, and a negative current collector layer 5, which are sequentially disposed; the positive electrode current collector comprises a positive electrode current collector body, positive electrode material layers, negative electrode material layers, an electrolyte layer, a membrane layer and a membrane layer, wherein the positive electrode material layers are arranged on two symmetrical surfaces of the positive electrode current collector body, the positive electrode material layers and the materials on the two symmetrical surfaces are the same (shown in figure 2), the negative electrode material layers are arranged on two symmetrical surfaces of the negative electrode current collector body, the negative electrode material layers and the materials on the two symmetrical surfaces are the same (shown in figure 3), the positive electrode current collector layer 4 is a carbon-coated aluminum foil with the thickness of 10 mu m, an active material in the positive electrode material layer 1 is sodium nickel hexacyano manganate (NaNiHCMn), the positive electrode material layer is 100 mu m, the electrolyte layer 2 is a liquid membrane layer consisting of a liquid electrolyte 6 and a membrane 8, the liquid electrolyte 6 is a water system liquid electrolyte, the membrane 8 consists of a polymer matrix layer and a surface liquid absorption coating 7, the main body of the membrane 8 is a matrix polymer layer, the polymer layer is made of cellulose membrane paper, the surface liquid absorption coating 7 of polyvinylidene fluoride, the thickness of the electrolyte layer 2 is 6 microns, the active material in the negative electrode material layer 3 is titanium sodium phosphate, the thickness of the negative electrode material layer is 60 microns, the thickness of the negative electrode current collector layer is microporous copper foil and 8 microns, the prepared Prussian blue type sodium ion battery is subjected to 0.5C/0.5C charge-discharge test, the cycle is 1200 circles, and the capacity retention rate is more than or equal to 80%.
Example 7
As shown in fig. 1, a prussian blue sodium ion battery, in which a roll core includes a positive current collector layer 4, a positive material layer 1, an electrolyte layer 2, a negative material layer 3, and a negative current collector layer 5, which are sequentially disposed; the positive electrode current collector comprises a positive electrode current collector body, positive electrode material layers, negative electrode material layers, an electrolyte layer, a membrane layer and a liquid absorption coating layer, wherein the positive electrode material layers are arranged on two symmetrical surfaces of the positive electrode current collector body, the thickness and the material of the positive electrode material layers on the two symmetrical surfaces are the same (shown in figure 2), the negative electrode material layers are arranged on two symmetrical surfaces of the negative electrode current collector body, the thickness and the material of the negative electrode material layers on the two symmetrical surfaces are the same (shown in figure 3), the positive electrode current collector layer 4 is a common plain aluminum foil and is 5 mu m thick, an active material in the positive electrode material layer 1 is sodium hexacyanocobaltate manganite (NaCuHCMn), the thickness of the positive electrode material layer is 50 mu m thick, the electrolyte layer 2 is a liquid membrane layer composed of a liquid electrolyte 6 and a membrane 8, the liquid electrolyte 6 is an aqueous liquid electrolyte, the membrane 8 is composed of a polymer matrix layer and a surface liquid absorption coating layer 7, the main body of the membrane 8 is a matrix layer, the material is cellulose membrane paper, the surface liquid absorption coating 7 of the membrane 8 is silicon dioxide, the thickness of the electrolyte layer 2 is 14 micrometers, the active material in the negative electrode material layer 3 is sodium manganese hexacyano-manganate (NaMnHCMn), the thickness of the negative electrode material layer is 50 micrometers, the thickness of the negative electrode current collector layer is 4 micrometers, the prepared Prussian blue type sodium ion battery is subjected to 0.5C/0.5C charge-discharge test, the cycle is 1200 circles, and the capacity retention rate is more than or equal to 80%.
To sum up, the utility model provides a prussian blue class sodium ion battery, anodal current collector layer and negative pole current collector layer all can adopt the aluminium foil, have greatly reduced the manufacturing cost of this type of battery. The diaphragm adopts high molecular polymer and ceramic material as coating material, which not only shortens the contact distance between the anode material layer and the cathode material layer of the sodium-ion battery, reduces the interface impedance, but also improves the cycle stability and safety.
The utility model discloses active material in the positive electrode material layer adopts the abundant sodium of nature reserves as energy storage element, very big reduction sodium ion battery's cost. Meanwhile, the iron-based or manganese-based Prussian blue positive electrode material with low price is used, and the material with an open framework structure can provide enough clearance space for large-size ion de-intercalation, so that the sodium ion battery has higher rate performance and cycle performance, and is not limited by the shortage of cobalt resources, and the Prussian blue sodium ion battery can be used in a large scale.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A Prussian blue sodium ion battery is characterized in that: the winding core in the battery comprises a positive electrode current collector layer, a positive electrode material layer, an electrolyte layer, a negative electrode material layer and a negative electrode current collector layer which are sequentially arranged, wherein the positive electrode material layer is arranged on two symmetrical surfaces of the positive electrode current collector, the thickness and the material of the positive electrode material layer on the two symmetrical surfaces are the same, the thickness and the material of the negative electrode material layer on the two symmetrical surfaces of the negative electrode current collector are the same, the active material in the positive electrode material layer is sodium iron hexacyanoferrate, sodium nickel hexacyanoferrate, sodium copper hexacyanoferrate, sodium manganese hexacyanoferrate, sodium zinc hexacyanoferrate, sodium cobalt hexacyanoferrate, sodium nickel hexacyanoferrate, sodium cobalt hexacyanoferrate, sodium copper hexacyanoferrate or sodium zinc hexacyanoferrate, the active material in the negative electrode material layer is hard carbon, soft carbon, sodium titanium phosphate or sodium hexacyanoferrate, and the electrolyte layer is a membrane layer formed by a membrane and a liquid electrolyte, the diaphragm is composed of a polymer matrix layer and a surface liquid absorption coating layer, and all the layers in the battery core are sequentially wound or laminated and assembled.
2. The prussian blue-based sodium-ion battery of claim 1, wherein: the anode current collector layer is a common plain aluminum foil, a carbon-coated aluminum foil, a microporous aluminum foil or a foam aluminum foil.
3. The prussian blue-based sodium-ion battery of claim 1, wherein: the polymer matrix layer is a microporous polyolefin film, a non-woven fabric film, a nanofiber film or cellulose diaphragm paper.
4. The prussian blue-based sodium-ion battery of claim 1, wherein: the surface liquid absorption coating is made of polyvinylidene fluoride, polyvinylidene fluoride-hexafluoropropylene, silicon dioxide, boehmite or polytetrafluoroethylene.
5. The prussian blue-based sodium-ion battery of claim 1, wherein: the liquid electrolyte is an organic liquid electrolyte, an aqueous liquid electrolyte or an ionic liquid electrolyte.
6. The prussian blue-based sodium-ion battery of claim 1, wherein: the negative current collector layer is a common plain aluminum foil, a carbon-coated aluminum foil, a microporous aluminum foil, a foam aluminum foil, a common plain copper foil, a carbon-coated copper foil or a microporous copper foil.
7. The prussian blue-based sodium-ion battery of claim 1, wherein: the thickness of the positive current collector layer is 5-50 mu m, and the thickness of the negative current collector layer is 4-50 mu m.
8. The prussian blue-based sodium-ion battery of claim 1, wherein: the thickness of the positive electrode material layer is 50-800 mu m, and the thickness of the negative electrode material layer is 50-800 mu m.
9. The prussian blue-based sodium-ion battery of claim 1, wherein: the thickness of the electrolyte layer is 6-50 μm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116435726A (en) * | 2023-06-15 | 2023-07-14 | 深圳海辰储能控制技术有限公司 | Electrode assembly, cylindrical battery and electric equipment |
| CN116885268A (en) * | 2022-08-24 | 2023-10-13 | 太仓中科赛诺新能源科技有限公司 | Prussian blue analogue positive electrode material and electrochemical energy storage device |
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- 2021-03-02 CN CN202120447883.6U patent/CN214336748U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116885268A (en) * | 2022-08-24 | 2023-10-13 | 太仓中科赛诺新能源科技有限公司 | Prussian blue analogue positive electrode material and electrochemical energy storage device |
| CN116435726A (en) * | 2023-06-15 | 2023-07-14 | 深圳海辰储能控制技术有限公司 | Electrode assembly, cylindrical battery and electric equipment |
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