CN109786660A - Sodium ion battery electrode capable of carrying out positive electrode pre-sodium treatment - Google Patents
Sodium ion battery electrode capable of carrying out positive electrode pre-sodium treatment Download PDFInfo
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- CN109786660A CN109786660A CN201811543551.7A CN201811543551A CN109786660A CN 109786660 A CN109786660 A CN 109786660A CN 201811543551 A CN201811543551 A CN 201811543551A CN 109786660 A CN109786660 A CN 109786660A
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- 239000011734 sodium Substances 0.000 title claims abstract description 67
- 229910052708 sodium Inorganic materials 0.000 title claims abstract description 30
- 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 title claims abstract description 29
- 229910001415 sodium ion Inorganic materials 0.000 title claims abstract description 23
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000007787 solid Substances 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 16
- 239000011230 binding agent Substances 0.000 claims abstract description 11
- 239000006258 conductive agent Substances 0.000 claims abstract description 10
- -1 graphite alkene Chemical class 0.000 claims description 17
- 229910002804 graphite Inorganic materials 0.000 claims description 9
- 239000010439 graphite Substances 0.000 claims description 9
- XMWRBQBLMFGWIX-UHFFFAOYSA-N C60 fullerene Chemical compound C12=C3C(C4=C56)=C7C8=C5C5=C9C%10=C6C6=C4C1=C1C4=C6C6=C%10C%10=C9C9=C%11C5=C8C5=C8C7=C3C3=C7C2=C1C1=C2C4=C6C4=C%10C6=C9C9=C%11C5=C5C8=C3C3=C7C1=C1C2=C4C6=C2C9=C5C3=C12 XMWRBQBLMFGWIX-UHFFFAOYSA-N 0.000 claims description 8
- 229910020685 Na4Co3 Inorganic materials 0.000 claims description 8
- 229920002125 Sokalan® Polymers 0.000 claims description 8
- 229910003472 fullerene Inorganic materials 0.000 claims description 8
- 229910000155 iron(II) phosphate Inorganic materials 0.000 claims description 8
- 239000004584 polyacrylic acid Substances 0.000 claims description 8
- 229920000120 polyethyl acrylate Polymers 0.000 claims description 8
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 8
- 239000002096 quantum dot Substances 0.000 claims description 8
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical group [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 8
- 229910000406 trisodium phosphate Inorganic materials 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 239000007832 Na2SO4 Substances 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 7
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 7
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 7
- 229910021389 graphene Inorganic materials 0.000 claims description 6
- 239000007774 positive electrode material Substances 0.000 claims description 6
- 229910052979 sodium sulfide Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 150000001336 alkenes Chemical class 0.000 claims 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 238000012986 modification Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract description 2
- 239000013543 active substance Substances 0.000 abstract 1
- 239000007773 negative electrode material Substances 0.000 description 7
- 229910021385 hard carbon Inorganic materials 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- VDQVEACBQKUUSU-UHFFFAOYSA-M disodium;sulfanide Chemical compound [Na+].[Na+].[SH-] VDQVEACBQKUUSU-UHFFFAOYSA-M 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000005030 aluminium foil Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 239000011149 active material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006182 cathode active material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000386 donor Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229910001947 lithium oxide Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a sodium ion battery electrode capable of carrying out positive electrode pre-sodium modification, which consists of solid powder consisting of sodium-rich donors, positive electrode active substances, conductive agents and binders. The invention improves the cycle performance of the sodium-ion battery and reduces the loss of sodium ions in the cycle process, thereby further embodying the use advantage of the sodium-ion battery as a low-cost battery.
Description
Technical field
The invention belongs to sodium-ion battery technical field, more particularly to it is a kind of can pre- sodium sodium-ion battery.
Background technique
With constantly advancing for new energy resource power battery, new battery system is continued to bring out, traditional lithium-ion electric
A series of problems, such as pond is higher presently, there are cost of material.In general, the approach for reducing cost has: reducing battery material
Cost, the service life for extending battery etc..
Sodium-ion battery is the electrochmical power source system that fast development is got up in recent years, since sodium-ion battery positive material is closed
It is usually lower-cost sodium salt, this point carbon used compared to anode material for lithium-ion batteries synthesis at used raw material
Cost reduces 80% or more for sour lithium or lithium hydroxide, in addition sodium-ion battery presently, there are main problem be:
First is that energy density it is slightly lower, second is that cycle life compared to still having a certain distance for lithium ion battery.
Improving sodium-ion battery cycle life, relatively effective means are using the method for pre- sodium processing, pre- sodium processing at present
Pre- sodium technology can broadly be divided into the pre- sodium of anode and the pre- sodium of cathode, the pre- sodium of cathode are exactly to take certain hand
Section supplements a certain amount of Na in negative electrode material in advance+To compensate the irreversible capacity damage during negative electrode material first charge-discharge
It loses, the pre- sodium of anode is mainly the compound that rich sodium is added during electrode fabrication, so that sodium ion is excessive from positive electrode
Na can be effectively provided after abjection+Ion, maintains the stabilization of structure, to extend the cycle performance of battery.
Summary of the invention
The present invention is to solve the problems, such as that sodium-ion battery cycle life present in well-known technique is short, and providing one kind can be with
The sodium-ion battery electrode for carrying out the pre- sodium of anode, effectively improves the cycle life of sodium-ion battery, also reduces sodium ion
The use cost of battery, to help to push being widely applied and applying for sodium-ion battery.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is that: one kind can carry out the sodium of the pre- sodium of anode
Ion battery electrode, the solid powder including rich sodium donor, positive active material, conductive agent and binder composition；
The richness sodium donor is Na3PO4、Na2O2、Na2SO4、Na2One or more of S combination, molar ratio are
Na3PO4: Na2O2: Na2SO4: Na2S=0~3:0~1.5:0~2.5:0~2, the gross mass percentage of rich sodium donor are solid-state
The 2% of powder gross mass；
The positive active material is Na4Co3(PO4)2P2O7、Na4Fe3(PO4)2P2O7、Na4Co2.4Mn0.3Ni0.3(PO4)2P2O7、Na3(VO0.8)2(PO4)2F1.4One or more of, molar ratio Na4Co3(PO4)2P2O7: Na4Fe3(PO4)2P2O7: Na4Co2.4Mn0.3Ni0.3(PO4)2P2O7: Na3(VO0.8)2(PO4)2F1.4=0~3:0~1.5:0~2.5:0~2, anode
The gross mass percentage of active material is the 90% of solid powder gross mass；
The conductive agent is one or more of graphene quantum dot, fullerene, graphite alkene combination or more, mass ratio
For graphene quantum dot: fullerene: graphite alkene=0~3:0~1.5:0~2.5, the gross mass percentage of conductive agent are solid-state powder
The 5% of body gross mass；
The binder be one of polyacrylic acid pentabromo- benzyl ester, polymethyl methacrylate, polyethyl acrylate or
Several combinations, mass ratio are polyacrylic acid pentabromo- benzyl ester: polymethyl methacrylate: polyethyl acrylate=0~3:0~
1.5:0~2.5, the gross mass percentage of binder are the 3% of solid powder gross mass.
The beneficial effects of the present invention are: improving the cycle performance of sodium-ion battery, reduce in cyclic process, sodium ion
Loss, to further embody a kind of use advantage of the sodium-ion battery as inexpensive battery.
Specific embodiment
The of the invention sodium-ion battery electrode for carrying out the pre- sodium of anode, including rich sodium donor, positive active material, lead
The solid powder of electric agent and binder composition；
The richness sodium donor is Na3PO4、Na2O2、Na2SO4、Na2One or more of S combination, molar ratio are
Na3PO4: Na2O2: Na2SO4: Na2S=0~3:0~1.5:0~2.5:0~2, the gross mass percentage of rich sodium donor are solid-state
The 2% of powder gross mass；
The positive active material is Na4Co3(PO4)2P2O7、Na4Fe3(PO4)2P2O7、Na4Co2.4Mn0.3Ni0.3(PO4)2P2O7、Na3(VO0.8)2(PO4)2F1.4One or more of, molar ratio Na4Co3(PO4)2P2O7: Na4Fe3(PO4)2P2O7: Na4Co2.4Mn0.3Ni0.3(PO4)2P2O7: Na3(VO0.8)2(PO4)2F1.4=0~3:0~1.5:0~2.5:0~2, anode
The gross mass percentage of active material is the 90% of solid powder gross mass；
The conductive agent is one or more of graphene quantum dot, fullerene, graphite alkene combination or more, mass ratio
For graphene quantum dot: fullerene: graphite alkene=0~3:0~1.5:0~2.5, the gross mass percentage of conductive agent are solid-state powder
The 5% of body gross mass；
The binder be one of polyacrylic acid pentabromo- benzyl ester, polymethyl methacrylate, polyethyl acrylate or
Several combinations, mass ratio are polyacrylic acid pentabromo- benzyl ester: polymethyl methacrylate: polyethyl acrylate=0~3:0~
1.5:0~2.5, the gross mass percentage of binder are the 3% of solid powder gross mass.
After solid mixture is dissolved and stirred evenly as solvent using NMP, it is coated on 20 microns of thick aluminium
It on foil, dries, is dried in vacuo 24 hours at 120 DEG C by continuing after rolling, hard carbon is adopted as negative electrode material in 150 DEG C
2.8V is charged under the current density of 50mA/g later at soft-package battery with by electrode assembling, then constant-voltage charge 30 minutes,
Continue to charge to 3.9V constant-voltage charge 30 minutes, continues to be discharged to 2.0V with the current density of 50mA/g, it then will be in battery
Gas is released, and continues to encapsulate, and is then recycled between 2.0-3.9V with the current density of 100mA/g.Test result table
It is bright, it carries out the battery of pre- sodium processing and is significantly improved compared to not carrying out the battery of pre- sodium processing its cycle performance.
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and it is described in detail
It is as follows:
Embodiment 1
By Na3PO4、Na4Co3(PO4)2P2O7, graphite alkene, polyacrylic acid pentabromo- benzyl ester it is mixed according to mass ratio 2:90:5:3
It closes, NMP is added as solvent, solid content disperses 8 hours in refiner between 45-60%, is coated on 20 microns of thick aluminium
It on foil, dries, is dried in vacuo 24 hours at 120 DEG C by continuing after rolling, hard carbon is adopted as negative electrode material in 150 DEG C
2.8V is charged under the current density of 50mA/g later at soft-package battery with by electrode assembling, then constant-voltage charge 30 minutes,
Continue to charge to 3.9V constant-voltage charge 30 minutes, continues to be discharged to 2.0V with the current density of 50mA/g, it then will be in battery
Gas is released, and continues to encapsulate, and is then recycled between 2.0-3.9V with the current density of 100mA/g.
Embodiment 2
By Na2O2、Na4Fe3(PO4)2P2O7, fullerene, polymethyl methacrylate it is mixed according to mass ratio 2:90:5:3
It closes, NMP is added as solvent, solid content disperses 8 hours in refiner between 45-60%, is coated on 20 microns of thick aluminium
It on foil, dries, is dried in vacuo 24 hours at 120 DEG C by continuing after rolling, hard carbon is adopted as negative electrode material in 150 DEG C
2.8V is charged under the current density of 50mA/g later at soft-package battery with by electrode assembling, then constant-voltage charge 30 minutes,
Continue to charge to 3.9V constant-voltage charge 30 minutes, continues to be discharged to 2.0V with the current density of 50mA/g, it then will be in battery
Gas is released, and continues to encapsulate, and is then recycled between 2.0-3.9V with the current density of 100mA/g.
Embodiment 3
By Na2S、Na4Co2.4Mn0.3Ni0.3(PO4)2P2O7, graphene quantum dot, polyethyl acrylate is according to mass ratio
NMP is added as solvent in 2:90:5:3 mixing, and solid content disperses 8 hours in refiner between 45-60%, is coated on 20
It on the thick aluminium foil of micron, dries, is dried in vacuo 24 hours at 120 DEG C by continuing after rolling, hard carbon is as negative in 150 DEG C
Pole material charges to 2.8V under the current density of 50mA/g at after soft-package battery using by electrode assembling, and then constant pressure is filled
Electricity 30 minutes, continues to charge to 3.9V constant-voltage charge 30 minutes, continues to be discharged to 2.0V with the current density of 50mA/g, then will
Gas in battery is released, and continues to encapsulate, and is then recycled between 2.0-3.9V with the current density of 100mA/g.
Embodiment 4
By Na4Co3(PO4)2P2O7, Na4Fe3(PO4)2P2O7, Na4Co2.4Mn0.3Ni0.3(PO4)2P2O7And Na3(VO0.8)2
(PO4)2F1.4Mixed cathode active material is formed according to molar ratio=2:1:1:1.5, and by blended anode and conductive agent (graphite
Alkene quantum dot: fullerene: graphite alkene=1:1:2 mass ratio), binder (polyacrylic acid pentabromo- benzyl ester: poly-methyl methacrylate
Ester: polyethyl acrylate=2:1:2 mass ratio), rich sodium donor (Na3PO4: Na2O2: Na2SO4: Na2S=1:1:2:1 molar ratio)
It is mixed according to 90:5:3:2 (mass ratio).NMP is added as solvent, solid content disperses 8 between 45-60% in refiner
Hour, it is coated on 20 microns of thick aluminium foils, is dried in 150 DEG C, it is small by continuing the vacuum drying 24 at 120 DEG C after rolling
When, hard carbon charges under the current density of 50mA/g using by electrode assembling at after soft-package battery as negative electrode material
2.8V, then constant-voltage charge 30 minutes, continue to charge to 3.9V constant-voltage charge 30 minutes, and continuation is put with the current density of 50mA/g
Gas in battery is then released to 2.0V, continues to encapsulate, then with the electric current of 100mA/g between 2.0-3.9V by electricity
Density is recycled.
Comparative example 1
By Na2CoO2, SP, PVDF according to mass ratio 2:93:5 mix, be added NMP as solvent, solid content is in 45-
Between 60%, disperse 8 hours in refiner, be coated on 20 microns of thick aluminium foils, is dried in 150 DEG C, after rolling
Continuation be dried in vacuo 24 hours at 120 DEG C, hard carbon as negative electrode material, using by electrode assembling at soft-package battery later in
2.8V is charged under the current density of 50mA/g, then constant-voltage charge 30 minutes, continue to charge to 3.9V constant-voltage charge 30 minutes,
Continue to be discharged to 2.0V with the current density of 50mA/g, then the gas in battery is released, continues to encapsulate, then in 2.0-
It is recycled between 3.9V with the current density of 100mA/g.
1 embodiment of table and comparative example Contrast on effect
| 300 weeks circulation volume conservation rate % | |
| Embodiment 1 | 88.2 |
| Embodiment 2 | 89.3 |
| Embodiment 3 | 83.5 |
| Embodiment 4 | 92.1 |
| Comparative example 1 | 62.1 |
Embodiment described above is merely to illustrate technical idea and feature of the invention, in the art its object is to make
Technical staff it will be appreciated that the contents of the present invention and implement accordingly, patent model of the invention only cannot be limited with the present embodiment
It encloses, i.e., same changes or modifications made by all disclosed spirit are still fallen in the scope of the patents of the invention.
Claims (1)
1. the sodium-ion battery electrode that one kind can carry out the pre- sodium of anode, which is characterized in that including rich sodium donor, positive electrode active material
The solid powder of matter, conductive agent and binder composition；
The richness sodium donor is Na3PO4、Na2O2、Na2SO4、Na2One or more of S combination, molar ratio Na3PO4:
Na2O2: Na2SO4: Na2S=0~3:0~1.5:0~2.5:0~2, the gross mass percentage of rich sodium donor are the total matter of solid powder
The 2% of amount；
The positive active material is Na4Co3(PO4)2P2O7、Na4Fe3(PO4)2P2O7、Na4Co2.4Mn0.3Ni0.3(PO4)2P2O7、
Na3(VO0.8)2(PO4)2F1.4One or more of, molar ratio Na4Co3(PO4)2P2O7: Na4Fe3(PO4)2P2O7:
Na4Co2.4Mn0.3Ni0.3(PO4)2P2O7: Na3(VO0.8)2(PO4)2F1.4=0~3:0~1.5:0~2.5:0~2, positive-active
The gross mass percentage of substance is the 90% of solid powder gross mass；
The conductive agent is one or more of graphene quantum dot, fullerene, graphite alkene combination or more, and mass ratio is stone
Black alkene quantum dot: fullerene: graphite alkene=0~3:0~1.5:0~2.5, the gross mass percentage of conductive agent are that solid powder is total
The 5% of quality；
The binder is one or more of polyacrylic acid pentabromo- benzyl ester, polymethyl methacrylate, polyethyl acrylate
Combination, mass ratio are polyacrylic acid pentabromo- benzyl ester: polymethyl methacrylate: polyethyl acrylate=0~3:0~1.5:0
~2.5, the gross mass percentage of binder is the 3% of solid powder gross mass.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335764A (en) * | 2019-07-30 | 2019-10-15 | 中南大学 | A kind of pre- sodium modification method for efficiently constructing sodium ion capacitor |
| CN110993883A (en) * | 2019-10-28 | 2020-04-10 | 广东电网有限责任公司 | Electrode plate and preparation method and application thereof |
| CN111653744A (en) * | 2020-05-21 | 2020-09-11 | 中国科学院化学研究所 | Sodium ion battery positive electrode sodium supplement additive, sodium ion battery positive electrode plate and sodium ion battery |
| CN112952037A (en) * | 2021-02-25 | 2021-06-11 | 武汉大学 | Pre-sodium-modified sodium ion battery positive electrode and pre-sodium-modification method and application thereof |
| CN113130896A (en) * | 2019-12-30 | 2021-07-16 | 珠海冠宇电池股份有限公司 | Positive electrode material for sodium ion battery and sodium ion battery comprising same |
| CN114270565A (en) * | 2019-09-06 | 2022-04-01 | 株式会社Lg新能源 | Method for pre-lithiation and pre-sodium treatment of negative electrode, pre-lithiation and pre-sodium treatment negative electrode, and lithium secondary battery comprising pre-lithiation and pre-sodium treatment negative electrode |
| CN114914428A (en) * | 2022-05-31 | 2022-08-16 | 大连中比动力电池有限公司 | High-first-efficiency hard carbon negative electrode material, preparation method thereof and sodium ion battery |
| CN115295804A (en) * | 2022-08-31 | 2022-11-04 | 厦门凯纳石墨烯技术股份有限公司 | Positive pole piece and secondary battery |
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| MARTINEZ DE ILARDUYA等: "NaN3 addition, a strategy to overcome the problem of sodium deficiency in P2-Na0.67[Fe0.5Mn0.5]O2 cathode for sodium-ion battery", 《JOURNAL OF POWER SOURCES》 * |
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| CN110335764A (en) * | 2019-07-30 | 2019-10-15 | 中南大学 | A kind of pre- sodium modification method for efficiently constructing sodium ion capacitor |
| CN114270565A (en) * | 2019-09-06 | 2022-04-01 | 株式会社Lg新能源 | Method for pre-lithiation and pre-sodium treatment of negative electrode, pre-lithiation and pre-sodium treatment negative electrode, and lithium secondary battery comprising pre-lithiation and pre-sodium treatment negative electrode |
| CN114270565B (en) * | 2019-09-06 | 2024-05-10 | 株式会社Lg新能源 | Pre-lithiation and pre-sodification method for negative electrode, pre-lithiation and pre-sodification negative electrode, and lithium secondary battery comprising same |
| CN110993883A (en) * | 2019-10-28 | 2020-04-10 | 广东电网有限责任公司 | Electrode plate and preparation method and application thereof |
| CN113130896A (en) * | 2019-12-30 | 2021-07-16 | 珠海冠宇电池股份有限公司 | Positive electrode material for sodium ion battery and sodium ion battery comprising same |
| CN111653744A (en) * | 2020-05-21 | 2020-09-11 | 中国科学院化学研究所 | Sodium ion battery positive electrode sodium supplement additive, sodium ion battery positive electrode plate and sodium ion battery |
| CN111653744B (en) * | 2020-05-21 | 2021-11-02 | 中国科学院化学研究所 | Sodium ion battery positive electrode sodium supplement additive, sodium ion battery positive electrode plate and sodium ion battery |
| CN112952037A (en) * | 2021-02-25 | 2021-06-11 | 武汉大学 | Pre-sodium-modified sodium ion battery positive electrode and pre-sodium-modification method and application thereof |
| CN114914428A (en) * | 2022-05-31 | 2022-08-16 | 大连中比动力电池有限公司 | High-first-efficiency hard carbon negative electrode material, preparation method thereof and sodium ion battery |
| CN115295804A (en) * | 2022-08-31 | 2022-11-04 | 厦门凯纳石墨烯技术股份有限公司 | Positive pole piece and secondary battery |
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