CN116809925A - Porous tin material and preparation method and application thereof - Google Patents
Porous tin material and preparation method and application thereof Download PDFInfo
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- CN116809925A CN116809925A CN202310785960.2A CN202310785960A CN116809925A CN 116809925 A CN116809925 A CN 116809925A CN 202310785960 A CN202310785960 A CN 202310785960A CN 116809925 A CN116809925 A CN 116809925A
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000000463 material Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 229910001128 Sn alloy Inorganic materials 0.000 claims abstract description 25
- UIDWHMKSOZZDAV-UHFFFAOYSA-N lithium tin Chemical compound [Li].[Sn] UIDWHMKSOZZDAV-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000006138 lithiation reaction Methods 0.000 claims abstract description 15
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 13
- 238000002791 soaking Methods 0.000 claims abstract description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 10
- 238000005530 etching Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 229910001415 sodium ion Inorganic materials 0.000 claims description 14
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 claims description 12
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 10
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 claims description 8
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 8
- 239000007773 negative electrode material Substances 0.000 claims description 8
- RZTDESRVPFKCBH-UHFFFAOYSA-N 1-methyl-4-(4-methylphenyl)benzene Chemical group C1=CC(C)=CC=C1C1=CC=C(C)C=C1 RZTDESRVPFKCBH-UHFFFAOYSA-N 0.000 claims description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 6
- JWUJQDFVADABEY-UHFFFAOYSA-N 2-methyltetrahydrofuran Chemical compound CC1CCCO1 JWUJQDFVADABEY-UHFFFAOYSA-N 0.000 claims description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 4
- 235000010290 biphenyl Nutrition 0.000 claims description 4
- 239000004305 biphenyl Substances 0.000 claims description 4
- 229910001416 lithium ion Inorganic materials 0.000 claims description 4
- 238000001291 vacuum drying Methods 0.000 claims description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 3
- 239000004210 ether based solvent Substances 0.000 claims description 2
- 238000004108 freeze drying Methods 0.000 claims description 2
- 238000009777 vacuum freeze-drying Methods 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 8
- 238000004146 energy storage Methods 0.000 abstract description 4
- 239000002253 acid Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 1
- 239000010931 gold Substances 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 abstract 1
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000006467 substitution reaction Methods 0.000 description 5
- 238000000967 suction filtration Methods 0.000 description 5
- 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 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000010405 anode material Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012612 commercial material Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009831 deintercalation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- 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
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/387—Tin or alloys based on tin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/145—Chemical treatment, e.g. passivation or decarburisation
-
- 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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention belongs to the field of energy storage and conversion, and particularly relates to a porous tin material, a preparation method and application thereof. The preparation method of the porous tin material comprises the following steps: dissolving aromatic hydrocarbon in an ether solvent, adding lithium metal, and stirring to obtain a pre-lithiated solution; adding tin powder into the pre-lithiation solution, and soaking to obtain a lithium tin alloy; etching the lithium tin alloy in a solvent, filtering and drying to obtain the porous tin material. According to the invention, the lithium tin alloy is obtained by a chemical pre-gold lithiation method, and then the porous tin material is obtained by simple soaking in an alcohol solution, so that the preparation method has the advantages of few procedures, low cost, preparation at normal temperature and normal pressure, no need of high temperature and high pressure and special environment, and simple process. Compared with an acid etching method, a vacuum stripping method, a template method and the like, the prepared porous tin material not only maintains excellent electrochemical performance, but also has simpler required preparation conditions and is environment-friendly.
Description
Technical Field
The invention belongs to the field of energy storage and conversion, and particularly relates to a porous tin material, a preparation method and application thereof.
Background
The disclosure of this background section is only intended to increase the understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art already known to those of ordinary skill in the art.
Sodium batteries have received extensive attention from researchers because of the abundance of sodium ions, low raw material prices, and similar energy storage mechanisms as lithium batteries. Hard carbon is currently used as a commercial sodium ion battery anode material due to its porous structure, but has a low sodium storage capacity and slow diffusion kinetics of sodium ions. When tin is used as the negative electrode of the sodium ion battery, the tin has the advantages of higher capacity, proper working potential, low cost, environmental friendliness and the like, and is considered as one of the most promising negative electrode materials. However, tin undergoes a large volume expansion (420%) during intercalation/deintercalation, resulting in rapid degradation of the electrochemical performance of the cell, which makes commercial use of tin in the field of battery energy storage difficult to develop.
One of the methods for solving the above problems is to perform a porosification treatment. On one hand, the porous structure can buffer the volume change of tin in the charge and discharge process; on the other hand, the porous structure of tin can provide more sodium ion diffusion channels, and the sodium ion diffusion kinetics are quickened. However, the existing preparation technology has the defects of complex preparation, high cost and the like, so that the development of a simple method for preparing porous tin is very significant.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a porous tin material and a preparation method and application thereof.
In order to achieve the above object, the present invention is realized by the following technical scheme:
in a first aspect, the present invention provides a method for preparing a porous tin material, comprising the steps of:
s1, dissolving aromatic hydrocarbon in an ether solvent, adding lithium metal, and stirring to obtain a pre-lithiation solution;
s2, adding tin powder into the pre-lithiation solution, and soaking to obtain a lithium tin alloy;
and S3, etching the lithium tin alloy in a solvent, filtering and drying to obtain the porous tin material.
In a second aspect, the present invention provides a porous tin material obtainable by the preparation method as described in the first aspect.
In a third aspect, the present invention provides the use of a porous tin material as described in the second aspect as a negative electrode material in a lithium ion battery and/or a sodium ion battery.
In a fourth aspect, the invention provides a sodium ion battery, which is characterized in that the negative electrode material of the sodium ion battery is the porous tin material in the second aspect.
The beneficial effects obtained by one or more of the technical schemes of the invention are as follows:
(1) According to the invention, the lithium tin alloy is obtained by a chemical prelithiation method, then the porous tin material can be obtained by simple soaking in alcohol solution, the procedures are few, the cost is low, the preparation can be carried out at normal temperature and normal pressure, high temperature and high pressure and special environment are not needed, and the process is simple.
(2) The preparation method is simple and convenient to operate, all the used precursors are commercial materials, the preparation process is simple, the large-scale production is easy, and the commercialization is expected to be realized.
(3) The preparation method of the invention can also be expanded to the preparation of porous metal lead, bismuth, antimony and the like, and has wide application range.
(4) The research finds that: compared with an acid etching method, a vacuum stripping method, a template method and the like, the prepared porous tin material not only maintains excellent electrochemical performance, but also has simpler required preparation conditions and is environment-friendly.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is an XRD pattern of the porous tin material prepared in example 1;
FIG. 2 is an SEM image of a porous tin material prepared according to example 1;
FIG. 3 is a graph showing the cycle performance of the porous tin anode prepared in example 1;
fig. 4 is a coulombic efficiency plot of the porous tin anode prepared in example 1.
Detailed Description
In a first exemplary embodiment of the present invention, a method for preparing a porous tin material includes the steps of:
s1, dissolving aromatic hydrocarbon in an ether solvent, adding lithium metal, and stirring to obtain a pre-lithiation solution;
s2, adding tin powder into the pre-lithiation solution, and soaking to obtain a lithium tin alloy;
and S3, etching the lithium tin alloy in a solvent, filtering and drying to obtain the porous tin material.
In one or more examples of this embodiment, in step S1, the aromatic hydrocarbon includes one or more of naphthalene, biphenyl, dimethylbiphenyl, and 4,4' -dimethylbiphenyl, and the ether-based solvent includes one or more of ethylene glycol dimethyl ether, tetrahydrofuran, and dimethyl-tetrahydrofuran.
In one or more embodiments of this embodiment, in step S1, the concentration of the aromatic hydrocarbon dissolved in the ether solvent is 0.2 to 0.8mol L -1 The aromatic hydrocarbon and the lithium metal are the same in mole number.
In one or more embodiments of this embodiment, in step S1, the stirring time is 0.5 to 5 hours.
In one or more embodiments of this embodiment, in step S2, the ratio of tin powder to pre-lithiation solution is 1g:95-105mL, and the soaking time is 0.2-3 h.
In one or more embodiments of this embodiment, in step S3, the etching time is 0.5 to 2 hours.
In one or more embodiments of this embodiment, in step S3, the drying is vacuum drying or freeze drying, the temperature of the vacuum drying is 50 to 80 ℃, and the temperature of the freeze drying is-30 to-50 ℃.
In a second exemplary embodiment of the present invention, a porous tin material is obtained by the preparation method described in the first exemplary embodiment.
In a third exemplary embodiment of the invention, the porous tin material according to the second exemplary embodiment is used as a negative electrode material in lithium ion batteries and/or sodium ion batteries.
In a fourth exemplary embodiment of the present invention, a sodium ion battery, the negative electrode material of which is the porous tin material according to the second exemplary embodiment.
In order to enable those skilled in the art to more clearly understand the technical scheme of the present invention, the technical scheme of the present invention will be described in detail below with reference to specific examples and comparative examples.
Example 1
(1) Preparation of lithium tin alloy: dissolving 0.005mol of biphenyl in 10mL of ethylene glycol dimethyl ether reagent, adding 0.005mol of lithium metal into the solution, stirring the solution for a proper time to prepare 0.5mol L of solution -1 Pre-lithiation of the solution; then, 0.1g of metallic tin powder was added to 10mL of the pre-lithiated solution, and lithium was transferred from the pre-lithiated solution to metallic tin driven by the oxidation-reduction potential to prepare a lithium-tin alloy.
(2) Substitution reaction: and soaking the obtained lithium tin alloy in an ethanol solution for 30min, performing suction filtration, and drying in a vacuum oven at 60 ℃ for 24h to obtain the porous tin material.
FIG. 1 is an XRD pattern in which only diffraction peaks of tin appear, demonstrating the acquisition of pure tin;
fig. 2 is an SEM image, demonstrating the preparation of porous structures.
(3) Performance test: porous tin material is used as negative electrode active material, sodium sheet is used as counter electrode and reference electrode, and 1M NaPF is used as electrolyte 6 +DGM, voltage interval is 0.01V-1.0V. FIGS. 3 and 4 show that at 200mA g -1 Is tested at a current density of 726.2mAh g after 55 weeks of cycling -1 The coulomb efficiency is 100%, and the material has no performance loss in the circulation process. The good electrochemical properties of the material are demonstrated.
Example 2
(1) Preparation of lithium tin alloy: dissolving 0.008mol of naphthalene in 10mL of ethylene glycol dimethyl ether reagent, adding 0.008mol of lithium metal into the solution, and stirring for a proper time to prepare 0.8mol/L of pre-lithiation solution; then, 0.1g of metallic tin powder was added to 10mL of the prelithiation solution to prepare a lithium tin alloy.
(2) Substitution reaction: and soaking the obtained lithium tin alloy in an ethanol solution for 15min, performing suction filtration, and drying in a vacuum oven at 60 ℃ for 24h to obtain the porous tin material.
Example 3
(1) Preparation of lithium tin alloy: 0.006mol of naphthalene was dissolved in 10mL of tetrahydrofuran reagent, and 0.006mol of lithium metal was added thereto, followed by stirring for a suitable period of time to prepare 0.6mol L -1 Pre-lithiation of the solution; then, 0.1g of metallic tin powder was added to 10mL of the prelithiation solution to prepare a lithium tin alloy.
(2) Substitution reaction: and soaking the obtained lithium tin alloy in an ethanol solution for 30min, performing suction filtration, and drying in a vacuum oven at 60 ℃ for 24h to obtain the porous tin material.
Example 4
(1) Preparation of lithium tin alloy: 0.006mol of naphthalene was dissolved in 10mL of dimethyl-tetrahydrofuran reagent, and 0.006mol of lithium metal was added thereto, followed by stirring for a suitable period of time to prepare 0.6mol L -1 Pre-lithiation of the solution; then, 0.1g of metallic tin powder was added to 10mL of the prelithiation solution to prepare a lithium tin alloy.
(2) Substitution reaction: and soaking the obtained lithium tin alloy in deionized water solution for 15min, performing suction filtration, and drying in a vacuum oven at 60 ℃ for 24h to obtain the porous tin material.
Example 5
(1) Preparation of lithium tin alloy: 0.006mol of biphenyl was dissolved in 10mL of dimethyl-tetrahydrofuran reagent, and 0.006mol of lithium metal was added thereto, followed by stirring for a suitable time to prepare 0.6mol L -1 Is used for the pre-lithiation of the lithium ion battery; then, 0.1g of metallic tin powder was added to 10mL of the prelithiation solution to prepare a lithium tin alloy.
(2) Substitution reaction: and soaking the obtained lithium tin alloy in deionized water solution for 15min, performing suction filtration, and drying in a vacuum oven at 60 ℃ for 24h to obtain the porous tin material.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The preparation method of the porous tin material is characterized by comprising the following steps of:
s1, dissolving aromatic hydrocarbon in an ether solvent, adding lithium metal, and stirring to obtain a pre-lithiation solution;
s2, adding tin powder into the pre-lithiation solution, and soaking to obtain a lithium tin alloy;
and S3, etching the lithium tin alloy in a solvent, filtering and drying to obtain the porous tin material.
2. The method according to claim 1, wherein in the step S1, the aromatic hydrocarbon comprises one or more of naphthalene, biphenyl, dimethylbiphenyl, and 4,4' -dimethylbiphenyl, and the ether-based solvent comprises one or more of ethylene glycol dimethyl ether, tetrahydrofuran, and dimethyl-tetrahydrofuran.
3. The process according to claim 1, wherein in step S1, the concentration of the aromatic hydrocarbon dissolved in the ether solvent is 0.2 to 0.8mol L -1 The aromatic hydrocarbon and the lithium metal are the same in mole number.
4. The method according to claim 1, wherein in the step S1, the stirring time is 0.5 to 5 hours.
5. The method according to claim 1, wherein in the step S2, the ratio of tin powder to pre-lithiation solution is 1g:95-105mL, and the soaking time is 0.2-3 h.
6. The method according to claim 1, wherein in the step S3, the etching time is 0.5 to 2 hours.
7. The method according to claim 1, wherein in step S3, the drying is vacuum drying or freeze drying, the temperature of the vacuum drying is 50 to 80 ℃, and the temperature of the freeze drying is-30 to-50 ℃.
8. Porous tin material, characterized in that it is obtained by the preparation method according to any one of claims 1 to 7.
9. Use of the porous tin material according to claim 8 as negative electrode material in lithium ion batteries and/or sodium ion batteries.
10. A sodium ion battery, wherein the negative electrode material of the sodium ion battery is the porous tin material of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310785960.2A CN116809925A (en) | 2023-06-29 | 2023-06-29 | Porous tin material and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310785960.2A CN116809925A (en) | 2023-06-29 | 2023-06-29 | Porous tin material and preparation method and application thereof |
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| CN116809925A true CN116809925A (en) | 2023-09-29 |
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| CN202310785960.2A Pending CN116809925A (en) | 2023-06-29 | 2023-06-29 | Porous tin material and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117059790A (en) * | 2023-10-12 | 2023-11-14 | 中国科学院宁波材料技术与工程研究所 | Integrated battery assembly and preparation method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117059790A (en) * | 2023-10-12 | 2023-11-14 | 中国科学院宁波材料技术与工程研究所 | Integrated battery assembly and preparation method and application thereof |
| CN117059790B (en) * | 2023-10-12 | 2024-03-26 | 中国科学院宁波材料技术与工程研究所 | Integrated battery assembly and preparation method and application thereof |
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