CN116154341A - Method for reducing residual alkali content of layered oxide positive electrode material of sodium ion battery - Google Patents
Method for reducing residual alkali content of layered oxide positive electrode material of sodium ion battery Download PDFInfo
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- CN116154341A CN116154341A CN202310069356.XA CN202310069356A CN116154341A CN 116154341 A CN116154341 A CN 116154341A CN 202310069356 A CN202310069356 A CN 202310069356A CN 116154341 A CN116154341 A CN 116154341A
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- 238000000034 method Methods 0.000 title claims abstract description 46
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 229910001415 sodium ion Inorganic materials 0.000 title claims abstract description 37
- 239000003513 alkali Substances 0.000 title claims abstract description 35
- 239000007774 positive electrode material Substances 0.000 title claims abstract description 31
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 35
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000010406 cathode material Substances 0.000 claims abstract description 20
- 235000011187 glycerol Nutrition 0.000 claims abstract description 15
- 238000005406 washing Methods 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 238000001291 vacuum drying Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 15
- 239000010405 anode material Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000002904 solvent Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- 239000003755 preservative agent Substances 0.000 description 7
- 230000002335 preservative effect Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 3
- 229910052808 lithium carbonate Inorganic materials 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 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 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G53/00—Compounds of nickel
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G3/00—Compounds of copper
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
- C01G45/12—Manganates manganites or permanganates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
-
- 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
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
-
- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive electrodes
-
- 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
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a method for reducing residual alkali content of a layered oxide anode material of a sodium ion battery, and belongs to the technical field of sodium ion batteries. The invention relates to a method for reducing residual alkali content of a layered oxide positive electrode material of a sodium ion battery, which comprises the following specific steps: (1) Dispersing a sodium ion battery layered oxide cathode material in anhydrous glycerin or a mixture of the anhydrous glycerin and absolute alcohol; (2) stirring to thoroughly dissolve the residual alkali, and filtering; (3) And (3) washing the filtered positive electrode material with absolute ethyl alcohol, and carrying out vacuum drying to obtain the layered oxide positive electrode material with reduced residual alkali. The invention removes residual alkali on the surface of the material by using the solvent which does not react with the positive electrode material, has obvious removal effect, reduces the use difficulty of the material in the process of manufacturing the battery, and has simple process and low cost.
Description
Technical Field
The invention belongs to the technical field of sodium ion batteries, and particularly relates to a method for reducing residual alkali content of a layered oxide anode material of a sodium ion battery.
Background
In recent years, sodium ion batteries have been developed more and more, wherein the direction of using layered oxides as positive electrode materials is dominant. However, such a sodium-containing cathode material, due to its own characteristics, exposes a number of drawbacks such as: the material has high alkalinity and is easy to absorb moisture, the pulping of the positive electrode material is more and more difficult in the process of manufacturing a battery, and the strong alkalinity of the positive electrode material causes larger and larger damage to an adhesive polyvinylidene fluoride (PVDF) in an N-methyl pyrrolidone solvent system under the action of a trace amount of moisture, so that the slurry is easy to form jelly colloid, the fluidity and the adhesiveness are lost, the failure is caused, and the positive electrode material cannot be utilized completely.
As a new material developed in recent two years, a sodium ion battery layered oxide positive electrode material has not been proposed yet as a mature method for reducing the alkalinity of the material. Referring to the high-nickel ternary alkaline reduction method (water washing and then drying) of the lithium ion battery, the method cannot be applied to the layered oxide cathode material of the sodium ion battery, because the main alkaline substance on the surface of the layered oxide cathode material of the sodium ion battery is sodium carbonate, the saturated solubility of the sodium carbonate in water is about 40 g, and the saturated solubility of the lithium carbonate on the high-nickel ternary surface of the lithium ion battery in water is only about 1.33 g.
Disclosure of Invention
The invention aims to provide a method for reducing the residual alkali content of a layered oxide positive electrode material of a sodium ion battery, and aims to solve the problem that the layered oxide positive electrode material of the sodium ion battery lacks a mature method for reducing the alkalinity of the material. Due to the difference of saturation in water of lithium carbonate in a lithium battery and sodium carbonate in a sodium ion battery, the existing layered oxide cathode material of the sodium ion battery cannot be used for referencing the method for reducing the alkalinity of the lithium ion battery by adopting water washing and drying. Aiming at the current situation of the layered oxidation cathode material of the sodium ion battery, the invention provides a method capable of truly reducing the alkalinity of the surface of the material, so that the alkalinity of the surface of the material is reduced, and the processing difficulty of manufacturing the battery is reduced.
The aim of the invention is realized by the following technical scheme:
a method for reducing residual alkali content of layered oxide anode material of sodium ion battery comprises the following specific steps:
(1) Dispersing a sodium ion battery layered oxide cathode material in anhydrous glycerin or a mixture of the anhydrous glycerin and absolute alcohol;
(2) Stirring to thoroughly dissolve residual alkali, and filtering;
(3) And (3) washing the filtered positive electrode material with absolute ethyl alcohol, and carrying out vacuum drying to obtain the layered oxide positive electrode material with reduced residual alkali.
As a preferred embodiment, the mixing ratio of the anhydrous glycerin and the anhydrous alcohol in the step (1) is 100:0 to 1: 99.
As a preferred embodiment, the sodium ion battery layered oxide positive electrode material in the step (1) has a chemical formula of Na X MO 2 Wherein M is one or more metal elements; the range value of x is 0.5<x<1.5。
As a preferred embodiment, the metal element is one or more of nickel, iron, manganese, copper, aluminum, zinc, magnesium, titanium, or the like.
In the dispersing treatment in the step (1), a sealing treatment is adopted, and the sealing treatment is specifically to seal or seal a tank body by using a preservative film; the preservative film is sealed by adopting the choice adopted in the experiment, and the sealed tank body is the choice adopted in the industrialization.
As a preferred embodiment, the number of times of washing with absolute alcohol in the step (3) is 1 to 3; the washing is used for removing the glycerol.
Compared with the prior art, the invention has the following beneficial effects:
the invention removes residual alkali on the surface of the material by using the solvent which does not react with the positive electrode material, has obvious removal effect, reduces the use difficulty of the material in the process of manufacturing the battery, and has simple process and low cost.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
At present, due to the difference of saturation in water of lithium carbonate in a lithium battery and sodium carbonate in a sodium ion battery, the existing sodium ion battery layered oxide positive electrode material cannot be used for referencing the method for reducing the alkalinity of the dried after water washing adopted by the lithium ion battery, and the sodium ion battery layered oxide positive electrode material lacks the mature method for reducing the alkalinity of the material. In order to solve the technical problems, the invention provides a method for reducing the residual alkali content of a layered oxide anode material of a sodium ion battery, which reduces the alkalinity of the surface of the material and reduces the processing difficulty of manufacturing the battery.
Example 1
A method for reducing residual alkali content of layered oxide anode material of sodium ion battery comprises the following specific steps:
(1) Weighing 10 g of layered oxide cathode material, adding the layered oxide cathode material into a 200mL beaker, adding 100mL of anhydrous glycerol, and sealing with a preservative film;
(2) Magnetically stirring at 300 rpm for 5 min, and filtering to remove glycerol;
(3) Washing with absolute alcohol for 3 times, and vacuum drying to obtain the layered oxide anode material with reduced residual alkali.
The layered oxide cathode material treated by the method in the first embodiment with reduced residual alkali is used for measuring the pH value, and the specific test steps are as follows:
5 g of the layered oxide cathode material with reduced residual alkali obtained in example I was weighed, added into a 200mL beaker, 100mL of deionized water was added, the preservative film was sealed, magnetically stirred at 300 rpm for 5 minutes, the clarified liquid was filtered, and the pH was tested.
Example two
A method for reducing residual alkali content of layered oxide anode material of sodium ion battery comprises the following specific steps:
(1) Weighing 10 g of layered oxide cathode material, adding the layered oxide cathode material into a 200mL beaker, adding 100mL of anhydrous glycerin and an absolute alcohol mixture (6:4), and sealing with a preservative film;
(2) Magnetically stirring at 300 rpm for 5 min, filtering to remove the mixture of anhydrous glycerol and absolute alcohol;
(3) Washing with absolute alcohol for 3 times, and vacuum drying to obtain the layered oxide anode material with reduced residual alkali.
And taking the layered oxide positive electrode material treated by the method in the second embodiment and with reduced residual alkali, and carrying out PH test according to the PH value measuring method in the first embodiment.
Example III
A method for reducing residual alkali content of layered oxide anode material of sodium ion battery comprises the following specific steps:
(1) Weighing 10 g of layered oxide cathode material, adding the layered oxide cathode material into a 200mL beaker, adding 100mL of anhydrous glycerin and absolute alcohol mixture (1:99), and sealing with a preservative film;
(2) Magnetically stirring at 300 rpm for 5 min, filtering to remove the mixture of anhydrous glycerol and absolute alcohol;
(3) Washing with absolute alcohol for 3 times, and vacuum drying to obtain the layered oxide anode material with reduced residual alkali.
And (3) taking the layered oxide positive electrode material treated by the method in the third embodiment and with reduced residual alkali, and carrying out PH test according to the PH value measuring method in the first embodiment.
Comparative example one
The method for carrying out residual alkali content on the layered oxide cathode material of the sodium ion battery by washing and drying comprises the following specific steps:
(1) Weighing 10 g of layered oxide cathode material, adding the layered oxide cathode material into a 200mL beaker, adding 100mL of deionized water, and sealing with a preservative film;
(2) Magnetically stirring for 5 minutes at a rotation speed of 300 revolutions per minute, and filtering out deionized water;
(3) And (3) washing for 3 times by using deionized water, and carrying out vacuum drying to obtain the treated layered oxide anode material.
The layered oxide cathode material treated by the method of comparative example one was subjected to PH testing according to the PH measuring method of example one.
The PH test results for examples one through three, and comparative example one are shown in table 1:
table 1: the pH test results were as follows:
| experimental group | Example 1 | Example two | Example III | Comparative example one |
| PH value | 11.2 | 11.2 | 11.3 | 12.5 |
As can be seen from the comparative test results of Table 1, the residual alkali of the layered oxide material of the sodium ion battery can be greatly reduced and the pH can be lowered by using the method of the present invention as compared with the first comparative example.
Compared with the prior art, the invention has the following beneficial effects:
the invention removes residual alkali on the surface of the material by using the solvent which does not react with the positive electrode material, has obvious removal effect, reduces the use difficulty of the material in the process of manufacturing the battery, and has simple process and low cost.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. A method for reducing residual alkali content of layered oxide positive electrode material of sodium ion battery is characterized in that: the method comprises the following specific steps:
(1) Dispersing a sodium ion battery layered oxide cathode material in anhydrous glycerin or a mixture of the anhydrous glycerin and absolute alcohol;
(2) Stirring to thoroughly dissolve residual alkali, and filtering;
(3) And (3) washing the filtered positive electrode material with absolute ethyl alcohol, and carrying out vacuum drying to obtain the layered oxide positive electrode material with reduced residual alkali.
2. The method for reducing the residual alkali content of the layered oxide positive electrode material of the sodium ion battery according to claim 1, wherein the method comprises the following steps of: the mixing ratio of the anhydrous glycerin to the anhydrous alcohol in the step (1) is 100: between 0 and 1:99.
3. The method for reducing the residual alkali content of the layered oxide positive electrode material of the sodium ion battery according to claim 1, wherein the method comprises the following steps of: the chemical formula of the layered oxide positive electrode material of the sodium ion battery in the step (1) is Na X MO 2 Wherein M is one or more metal elements; the range value of x is0.5<x<1.5。
4. The method for reducing the residual alkali content of a layered oxide positive electrode material of a sodium ion battery according to claim 3, wherein: the metal element is one or more of nickel, iron, manganese, copper, zinc, magnesium, aluminum or titanium.
5. The method for reducing the residual alkali content of the layered oxide positive electrode material of the sodium ion battery according to claim 1, wherein the method comprises the following steps of: in the dispersion treatment in the step (1), a sealing treatment is used.
6. The method for reducing the residual alkali content of the layered oxide positive electrode material of the sodium ion battery according to claim 1, wherein the method comprises the following steps of: the times of the absolute alcohol washing in the step (3) are 1-3 times.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116930433A (en) * | 2023-09-18 | 2023-10-24 | 四川富临新能源科技有限公司 | PH test method for sodium ion layered oxide positive electrode material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150303460A1 (en) * | 2012-11-20 | 2015-10-22 | Showa Denko K.K. | Method for producing negative electrode material for lithium ion batteries |
| KR20180026019A (en) * | 2016-09-01 | 2018-03-12 | 전자부품연구원 | Positive active material for sodium ion rechargeable battery and method of manufacturing thereof |
| CN108269992A (en) * | 2016-12-30 | 2018-07-10 | 北京当升材料科技股份有限公司 | A kind of composite anode material of high-capacity lithium ion battery and preparation method thereof |
| CN109244436A (en) * | 2018-11-20 | 2019-01-18 | 宁波容百新能源科技股份有限公司 | A kind of nickelic positive electrode and preparation method thereof and a kind of lithium ion battery |
| CN115483378A (en) * | 2022-09-22 | 2022-12-16 | 中南大学 | Method for reducing residual alkali on surface of high-nickel ternary electrode material |
| CN115557546A (en) * | 2022-12-06 | 2023-01-03 | 湖州超钠新能源科技有限公司 | Sodium ion positive electrode material and preparation method and application thereof |
-
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- 2023-02-06 CN CN202310069356.XA patent/CN116154341A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150303460A1 (en) * | 2012-11-20 | 2015-10-22 | Showa Denko K.K. | Method for producing negative electrode material for lithium ion batteries |
| KR20180026019A (en) * | 2016-09-01 | 2018-03-12 | 전자부품연구원 | Positive active material for sodium ion rechargeable battery and method of manufacturing thereof |
| CN108269992A (en) * | 2016-12-30 | 2018-07-10 | 北京当升材料科技股份有限公司 | A kind of composite anode material of high-capacity lithium ion battery and preparation method thereof |
| CN109244436A (en) * | 2018-11-20 | 2019-01-18 | 宁波容百新能源科技股份有限公司 | A kind of nickelic positive electrode and preparation method thereof and a kind of lithium ion battery |
| CN115483378A (en) * | 2022-09-22 | 2022-12-16 | 中南大学 | Method for reducing residual alkali on surface of high-nickel ternary electrode material |
| CN115557546A (en) * | 2022-12-06 | 2023-01-03 | 湖州超钠新能源科技有限公司 | Sodium ion positive electrode material and preparation method and application thereof |
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| CN116930433A (en) * | 2023-09-18 | 2023-10-24 | 四川富临新能源科技有限公司 | PH test method for sodium ion layered oxide positive electrode material |
| CN116930433B (en) * | 2023-09-18 | 2024-03-19 | 四川富临新能源科技有限公司 | PH test method for sodium ion layered oxide positive electrode material |
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