Antimony-based negative electrode material, preparation method thereof and lithium ion battery
By reacting Schiff base-functionalized carbon quantum dots with antimony phosphate, a silver ear-shaped antimony-based anode material was prepared, solving the problems of low capacity and short lifespan in lithium-ion batteries and achieving high-capacity, long-life, and high-energy-density lithium-ion battery performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUNAN LOUDI HUAXING ANTIMONY IND
- Filing Date
- 2026-03-30
- Publication Date
- 2026-06-19
AI Technical Summary
Existing commercial graphite anode materials for lithium-ion batteries have low theoretical capacity, which cannot meet the requirements for high energy density and long lifespan. Antimony phosphate materials have poor electronic conductivity and large volume changes during charging and discharging, which leads to particle pulverization and affects lifespan.
Antimony-based anode materials were prepared by reacting Schiff base-functionalized carbon quantum dots with phosphorus and antimony sources via a solvothermal method. A composite system of chemical anchoring, physical buffering, and conductive network was constructed. The Schiff base structure coordinated with antimony ions, and the hydrophobic alkyl chain regulated the growth of antimony phosphate crystals to form a silver ear-like structure, thereby improving the specific surface area and conductivity.
It significantly improves the actual specific capacity of lithium-ion batteries, buffers volume changes, shortens the lithium-ion transport path, reduces electrode internal resistance, and achieves high specific capacity, long cycle life and excellent rate performance, making it suitable for high energy density and long life lithium-ion batteries.
Smart Images
Figure CN122246096A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of anode materials, specifically to an antimony-based anode material, its preparation method, and a lithium-ion battery. Background Technology
[0002] In recent years, the rapid development of large-scale power facilities such as electric vehicles, drones, and smart grids has led to unprecedented energy consumption, impacting the development prospects of lithium-ion batteries. Consequently, high-capacity lithium-ion batteries have become a necessity for the power infrastructure industry. In lithium-ion batteries, a good anode material should possess characteristics such as high energy density and long lifespan. However, the theoretical capacity of commercial graphite anodes is only 372 mAh / g, which cannot meet these requirements. Therefore, developing anode materials with high capacity, good safety, long lifespan, and abundant raw materials has become an urgent priority.
[0003] Antimony phosphate, as a layered inorganic phosphate, contains Sb. 3+ Antimony phosphate (Sb) exhibits redox reactions with Sb and alloying reactions with Li, making it a promising anode material for lithium-ion batteries. However, antimony phosphate has poor intrinsic electronic conductivity, and nanoparticles prepared by traditional hydrothermal methods have low specific surface areas, resulting in large volume changes during charge-discharge processes. Long-term cycling leads to particle pulverization, affecting lifespan. Summary of the Invention
[0004] Purpose of the invention: To address the above-mentioned technical problems, this invention proposes an antimony-based anode material, its preparation method, and a lithium-ion battery.
[0005] The technical solution adopted is as follows: A method for preparing an antimony-based anode material: Schiff base-functionalized carbon quantum dots can be prepared by adding a phosphorus source, an antimony source, and Schiff base-functionalized carbon quantum dots to a reaction solvent, followed by a solvothermal reaction.
[0006] Furthermore, the preparation method of the Schiff base functionalized carbon quantum dots is as follows: Amino-functionalized carbon quantum dots can be prepared by mixing amino-functionalized carbon quantum dots, alkyl ketones, and p-toluenesulfonic acid, and then carrying out a Schiff base reaction at 60-70℃.
[0007] Furthermore, the alkyl ketone has ≥10 carbon atoms, specifically it can be any one of di-n-pentyl ketone, di-n-hexyl ketone, di-n-heptyl ketone, and di-n-octyl ketone. The above is only an example for ease of understanding and is not intended as a limitation.
[0008] Furthermore, the preparation method of the amino-functionalized carbon quantum dots is as follows: Citric acid and organic amines are dissolved in deionized water to obtain a mixed solution. The mixed solution is sealed and subjected to hydrothermal reaction, then cooled to room temperature to obtain a reaction solution. The reaction solution is filtered through a microporous membrane and then dialyzed.
[0009] Furthermore, the organic amine is a dialkyl primary amine, specifically any one of di-n-pentyl ketone, di-n-hexyl ketone, di-n-heptyl ketone, and di-n-octyl ketone. The above is merely an example for ease of understanding and is not intended as a limitation.
[0010] Furthermore, the phosphorus source is an anionic phosphorus-containing imidazole ionic liquid, specifically any one of 1-butyl-3-methylimidazolium phosphate, 1-butyl-3-methylimidazolium dihydrogen phosphate, and 1-butyl-3-methylimidazolium hexafluorophosphate. The above is merely an example for ease of understanding and is not intended as a limitation.
[0011] Furthermore, the antimony source is any one of antimony trichloride, potassium antimony tartrate, antimony nitrate, or antimony glycolate.
[0012] Furthermore, the temperature of the solvothermal reaction is 140-180℃.
[0013] The present invention also provides an antimony-based anode material, which is prepared by the above-described method for preparing antimony-based anode materials.
[0014] The present invention also provides a lithium-ion battery comprising the above-mentioned antimony-based anode material.
[0015] The beneficial effects of this invention are: This invention provides a method for preparing antimony-based anode materials. The core innovation of the technical solution lies in the structural design of Schiff base functionalized carbon quantum dots, which constructs a three-in-one composite anode system of "chemical anchoring-physical buffering-conductive network". Using citric acid as the carbon source, a large number of amino structures are introduced on the surface of carbon quantum dots by introducing organic amines, making the amino groups on the surface of carbon quantum dots more densely distributed and with a more open spatial configuration. This provides sufficient and easily accessible reaction sites for subsequent Schiff baseification. Under the catalysis of p-toluenesulfonic acid, alkyl ketones react with amino groups to generate Schiff base structures. On the one hand, the lone pair electrons of the nitrogen atom on the Schiff base structure interact with Sb 3+ Coordination enables the chemical anchoring of the precursor. On the other hand, the hydrophobicity and steric hindrance of the alkyl chain regulate the nucleation and growth environment of antimony phosphate crystals. This molecular-level design transforms carbon quantum dots from simple physical mixing into chemically bonded functionalized carriers.
[0016] Schiff base-functionalized carbon quantum dots coordinate with antimony ions through their Schiff base structure, anchoring the antimony ions to the surface of the carbon quantum dots for site-specific nucleation and inhibiting their disordered growth. Simultaneously, the hydrophobic alkyl chains reduce the hydrophilicity of the nanosheet surface, promoting their oriented alignment. The small size of the carbon quantum dots allows them to embed into the gaps between nanosheets, acting as a "bridge" and guiding the nanosheets to stack along a specific direction, ultimately forming a silver ear-like structure.
[0017] Antimony-based anode materials with a silver ear-like structure assembled from nanosheets possess a high specific surface area, providing numerous active sites for lithium-ion adsorption and intercalation, significantly improving the actual specific capacity. Simultaneously, the pores between the nanosheets effectively buffer the drastic volume changes of the antimony-based material during charging and discharging, reducing material pulverization and shortening the lithium-ion transport path, thus increasing the ion diffusion rate. Furthermore, when combined with carbon quantum dots, they form a continuous conductive network, reducing electrode internal resistance. This results in a synergistic improvement in high specific capacity, long cycle life, excellent rate performance, and high structural stability, making it a highly promising anode material for lithium batteries, especially suitable for high-energy-density, long-life lithium-ion batteries. Attached Figure Description
[0018] Figure 1 The image shows the SEM image of the negative electrode material prepared in Example 1. Detailed Implementation
[0019] Unless otherwise specified in the examples, the conditions were performed under standard conditions or as recommended by the manufacturer. Reagents or instruments whose manufacturers are not specified are all commercially available products. Techniques not mentioned in this invention refer to existing technologies. Unless otherwise specified, the following examples and comparative examples are parallel experiments, using the same processing steps and parameters. Example 1:
[0020] A method for preparing an antimony-based anode material: 10g of citric acid and 5g of ethylenediamine were dissolved in 100ml of deionized water and sonicated for 5min to obtain a mixed solution. This mixed solution was placed in a polytetrafluoroethylene hydrothermal reactor, sealed, and reacted at 190℃ for 3h, then naturally cooled to room temperature to obtain the reaction solution. The obtained reaction solution was then... The mixture was filtered through a microporous membrane and then dialyzed for 48 hours using a dialysis bag with a molecular weight cutoff of 2000, with deionized water replaced every 12 hours during the process. Finally, it was freeze-dried at low temperature to obtain amino-functionalized carbon quantum dots.
[0021] 1g of amino-functionalized carbon quantum dots were added to 50ml of anhydrous ethanol and sonicated for 15min. Then, 1g of di-n-pentyl ketone was added, and the mixture was stirred until homogeneous. 10mg of p-toluenesulfonic acid was then added, and the mixture was heated to 65℃ and stirred for 12h. After the reaction was complete, the mixture was allowed to cool naturally to room temperature, concentrated under reduced pressure, and the solid was collected, washed with deionized water, and then... The mixture was filtered through a microporous membrane and then dialyzed for 48 hours using a dialysis bag with a molecular weight cutoff of 2000, with deionized water replaced every 12 hours during the process. Finally, the mixture was freeze-dried at low temperature to obtain Schiff base-functionalized carbon quantum dots.
[0022] 1 g of Schiff base-functionalized carbon quantum dots were dispersed in 10 ml of deionized water, and then 2.28 g of antimony trichloride was added and stirred until homogeneous. Next, 2.34 g of 1-butyl-3-methylimidazolium phosphate was added, and stirring was continued for 30 min. The mixture was then transferred to a hydrothermal reactor lined with polytetrafluoroethylene (PTFE), sealed, and heated to 160 °C for 24 h. After natural cooling to room temperature, the mixture was centrifuged, the precipitate was collected, washed three times each with anhydrous ethanol and deionized water, and then vacuum dried to obtain the antimony-based anode material. Its SEM image is shown below. Figure 1 . Example 2:
[0023] A method for preparing an antimony-based anode material: 10g of citric acid and 10g of ethylenediamine were dissolved in 100ml of deionized water and sonicated for 5min to obtain a mixed solution. This mixed solution was placed in a polytetrafluoroethylene hydrothermal reactor, sealed, and reacted at 200℃ for 3h, then naturally cooled to room temperature to obtain the reaction solution. The obtained reaction solution was then... The mixture was filtered through a microporous membrane and then dialyzed for 48 hours using a dialysis bag with a molecular weight cutoff of 2000, with deionized water replaced every 12 hours during the process. Finally, it was freeze-dried at low temperature to obtain amino-functionalized carbon quantum dots.
[0024] 1g of amino-functionalized carbon quantum dots were added to 50ml of anhydrous ethanol and sonicated for 15min. Then, 1g of di-n-pentyl ketone was added, and the mixture was stirred until homogeneous. 10mg of p-toluenesulfonic acid was then added, and the mixture was heated to 70℃ and stirred for 12h. After the reaction was complete, the mixture was allowed to cool naturally to room temperature, concentrated under reduced pressure, and the solid was collected, washed with deionized water, and then... The mixture was filtered through a microporous membrane and then dialyzed for 48 hours using a dialysis bag with a molecular weight cutoff of 2000, with deionized water replaced every 12 hours during the process. Finally, the mixture was freeze-dried at low temperature to obtain Schiff base-functionalized carbon quantum dots.
[0025] Disperse 1g of Schiff base-functionalized carbon quantum dots in 10ml of deionized water, then add 2.28g of antimony trichloride and stir until homogeneous. Next, add 2.34g of 1-butyl-3-methylimidazolium phosphate and continue stirring for 30min. Transfer the mixture to a hydrothermal reactor with a polytetrafluoroethylene liner, seal and heat to 180℃ for 24h, allow to cool naturally to room temperature, centrifuge, collect the precipitate, wash three times each with anhydrous ethanol and deionized water, and then vacuum dry to obtain the antimony-based anode material. Example 3:
[0026] A method for preparing an antimony-based anode material: 10g of citric acid and 1g of ethylenediamine were dissolved in 100ml of deionized water and sonicated for 5min to obtain a mixed solution. This mixed solution was placed in a polytetrafluoroethylene hydrothermal reactor, sealed, and reacted at 180℃ for 3h, then naturally cooled to room temperature to obtain the reaction solution. The obtained reaction solution was then... The mixture was filtered through a microporous membrane and then dialyzed for 48 hours using a dialysis bag with a molecular weight cutoff of 2000, with deionized water replaced every 12 hours during the process. Finally, it was freeze-dried at low temperature to obtain amino-functionalized carbon quantum dots.
[0027] 1g of amino-functionalized carbon quantum dots were added to 50ml of anhydrous ethanol and sonicated for 15min. Then, 1g of di-n-pentyl ketone was added, and the mixture was stirred until homogeneous. 10mg of p-toluenesulfonic acid was then added, and the mixture was heated to 60℃ and stirred for 12h. After the reaction was complete, the mixture was allowed to cool naturally to room temperature, concentrated under reduced pressure, and the collected solid was washed with deionized water before further processing. The mixture was filtered through a microporous membrane and then dialyzed for 48 hours using a dialysis bag with a molecular weight cutoff of 2000, with deionized water replaced every 12 hours during the process. Finally, the mixture was freeze-dried at low temperature to obtain Schiff base-functionalized carbon quantum dots.
[0028] Disperse 1g of Schiff base-functionalized carbon quantum dots in 10ml of deionized water, then add 2.28g of antimony trichloride and stir until homogeneous. Next, add 2.34g of 1-butyl-3-methylimidazolium phosphate and continue stirring for 30min. Transfer the mixture to a hydrothermal reactor with a polytetrafluoroethylene liner, seal and heat to 140℃ for 24h, allow to cool naturally to room temperature, centrifuge, collect the precipitate, wash three times each with anhydrous ethanol and deionized water, and then vacuum dry to obtain the antimony-based anode material. Example 4:
[0029] A method for preparing an antimony-based anode material: 10g of citric acid and 1g of ethylenediamine were dissolved in 100ml of deionized water and sonicated for 5min to obtain a mixed solution. This mixed solution was placed in a polytetrafluoroethylene hydrothermal reactor, sealed, and reacted at 200℃ for 3h, then naturally cooled to room temperature to obtain the reaction solution. The obtained reaction solution was then... The mixture was filtered through a microporous membrane and then dialyzed for 48 hours using a dialysis bag with a molecular weight cutoff of 2000, with deionized water replaced every 12 hours during the process. Finally, it was freeze-dried at low temperature to obtain amino-functionalized carbon quantum dots.
[0030] 1g of amino-functionalized carbon quantum dots were added to 50ml of anhydrous ethanol and sonicated for 15min. Then, 1g of di-n-pentyl ketone was added, and the mixture was stirred until homogeneous. 10mg of p-toluenesulfonic acid was then added, and the mixture was heated to 60℃ and stirred for 12h. After the reaction was complete, the mixture was allowed to cool naturally to room temperature, concentrated under reduced pressure, and the collected solid was washed with deionized water before further processing. The mixture was filtered through a microporous membrane and then dialyzed for 48 hours using a dialysis bag with a molecular weight cutoff of 2000, with deionized water replaced every 12 hours during the process. Finally, the mixture was freeze-dried at low temperature to obtain Schiff base-functionalized carbon quantum dots.
[0031] Disperse 1g of Schiff base-functionalized carbon quantum dots in 10ml of deionized water, then add 2.28g of antimony trichloride and stir until homogeneous. Next, add 2.34g of 1-butyl-3-methylimidazolium phosphate and continue stirring for 30min. Transfer the mixture to a hydrothermal reactor with a polytetrafluoroethylene liner, seal and heat to 180℃ for 24h, allow to cool naturally to room temperature, centrifuge, collect the precipitate, wash three times each with anhydrous ethanol and deionized water, and then vacuum dry to obtain the antimony-based anode material. Example 5:
[0032] A method for preparing an antimony-based anode material: 10g of citric acid and 5g of ethylenediamine were dissolved in 100ml of deionized water and sonicated for 5min to obtain a mixed solution. This mixed solution was placed in a polytetrafluoroethylene hydrothermal reactor, sealed, and reacted at 190℃ for 3h, then naturally cooled to room temperature to obtain the reaction solution. The obtained reaction solution was then... The mixture was filtered through a microporous membrane and then dialyzed for 48 hours using a dialysis bag with a molecular weight cutoff of 2000, with deionized water replaced every 12 hours during the process. Finally, it was freeze-dried at low temperature to obtain amino-functionalized carbon quantum dots.
[0033] 1g of amino-functionalized carbon quantum dots were added to 50ml of anhydrous ethanol and sonicated for 15min. Then, 1g of acetone was added, and the mixture was stirred until homogeneous. 10mg of p-toluenesulfonic acid was added, and the mixture was heated to 65℃ and stirred for 12h. After the reaction was complete, the mixture was allowed to cool naturally to room temperature, concentrated under reduced pressure, and the solid was collected, washed with deionized water, and then... The mixture was filtered through a microporous membrane and then dialyzed for 48 hours using a dialysis bag with a molecular weight cutoff of 2000, with deionized water replaced every 12 hours during the process. Finally, the mixture was freeze-dried at low temperature to obtain Schiff base-functionalized carbon quantum dots.
[0034] Disperse 1g of Schiff base-functionalized carbon quantum dots in 10ml of deionized water, then add 2.28g of antimony trichloride and stir until homogeneous. Next, add 2.34g of 1-butyl-3-methylimidazolium phosphate and continue stirring for 30min. Transfer the mixture to a hydrothermal reactor with a polytetrafluoroethylene liner, seal and heat to 160℃ for 24h, allow to cool naturally to room temperature, centrifuge, collect the precipitate, wash three times each with anhydrous ethanol and deionized water, and then vacuum dry to obtain the antimony-based anode material.
[0035] Comparative Example 1: It is basically the same as Example 1, except that Schiff base functionalized carbon quantum dots are not added.
[0036] A method for preparing an antimony-based anode material: Add 2.28g of antimony trichloride to 10ml of deionized water and stir well. Then add 2.34g of 1-butyl-3-methylimidazolium phosphate and continue stirring for 30min. Transfer the mixture to a hydrothermal reactor with a polytetrafluoroethylene liner, seal and heat to 160℃ for 24h. Allow it to cool naturally to room temperature, centrifuge, collect the precipitate, wash three times each with anhydrous ethanol and deionized water, and then vacuum dry to obtain the antimony-based anode material.
[0037] Comparative Example 2: It is basically the same as Example 1, except that carbon quantum dots are used instead of Schiff base functionalized carbon quantum dots.
[0038] A method for preparing an antimony-based anode material: 10g of citric acid was dissolved in 100ml of deionized water, and the solution was sonicated for 5 minutes. The solution was then placed in a polytetrafluoroethylene hydrothermal reactor, sealed, and kept at 190℃ for 3 hours. The reactor was then allowed to cool naturally to room temperature to obtain the reaction solution. The obtained reaction solution was then... The mixture was filtered through a microporous membrane, then dialyzed for 48 hours using a dialysis bag with a molecular weight cutoff of 2000, with deionized water replaced every 12 hours during the process. Finally, carbon quantum dots were obtained by low-temperature freeze-drying.
[0039] 1g of carbon quantum dots were dispersed in 10ml of deionized water, and then 2.28g of antimony trichloride was added and stirred evenly. Then 2.34g of 1-butyl-3-methylimidazolium phosphate was added and stirred for another 30min. The mixture was then transferred to a hydrothermal reactor with a polytetrafluoroethylene liner, sealed and heated to 160℃ for 24h. After naturally cooling to room temperature, the mixture was centrifuged, the precipitate was collected, washed three times each with anhydrous ethanol and deionized water, and then vacuum dried to obtain the antimony-based anode material.
[0040] Comparative Example 3: This is essentially the same as Example 1, except that amino-functionalized carbon quantum dots are used instead of Schiff base-functionalized carbon quantum dots.
[0041] A method for preparing an antimony-based anode material: 10g of citric acid and 5g of ethylenediamine were dissolved in 100ml of deionized water and sonicated for 5min to obtain a mixed solution. This mixed solution was placed in a polytetrafluoroethylene hydrothermal reactor, sealed, and reacted at 190℃ for 3h, then naturally cooled to room temperature to obtain the reaction solution. The obtained reaction solution was then... The mixture was filtered through a microporous membrane and then dialyzed for 48 hours using a dialysis bag with a molecular weight cutoff of 2000, with deionized water replaced every 12 hours during the process. Finally, it was freeze-dried at low temperature to obtain amino-functionalized carbon quantum dots.
[0042] 1g of amino-functionalized carbon quantum dots were dispersed in 10ml of deionized water, and then 2.28g of antimony trichloride was added and stirred evenly. Then 2.34g of 1-butyl-3-methylimidazolium phosphate was added and stirred for another 30min. The mixture was then transferred to a hydrothermal reactor with a polytetrafluoroethylene liner, sealed and heated to 160℃ for 24h. After naturally cooling to room temperature, the mixture was centrifuged, the precipitate was collected, washed three times each with anhydrous ethanol and deionized water, and then vacuum dried to obtain the antimony-based anode material.
[0043] Performance testing: CR2025 button batteries were prepared in an argon-filled glove box. The negative electrode materials prepared in Examples 1-5 and Comparative Examples 1-3 of this invention were mixed with sodium alginate and acetylene black carbon powder in a mass ratio of 7:2:1 in an appropriate amount of water to produce electrode materials. The resulting slurry was then... The electrode was coated with a thick layer of material onto copper foil and placed in a vacuum oven to dry at 110°C for 12 hours. The electrode was then punched into a circular sheet with a diameter of 12 mm and pressed under 10 MPa using a small press to enhance the contact between the material and the copper foil. A Celgard 2300 membrane was used as the separator, and pure lithium was used as the counter electrode. 1 mol of lithium hexafluorophosphate was dissolved in 1 L of a mixed organic solvent of diethyl carbonate (DEC), ethylene carbonate (EC), and dimethyl carbonate (DMC) (V(DEC):V(EC):V(DMC)=1:1:1) as the electrolyte. Electrochemical performance was tested on a Blue Battery testing system. Cyclic voltammetry (CV) tests were performed on a CH1600E electrochemical workstation at voltages ranging from 0.05 to 3.00 V and current densities of 0.1 A / g. The test results are shown in Table 1 below. Table 1: As shown in Table 1 above, the antimony-based anode material prepared by this invention has excellent electrochemical performance.
[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A method for preparing an antimony-based anode material, characterized in that, Specifically as follows: Schiff base-functionalized carbon quantum dots can be prepared by adding a phosphorus source, an antimony source, and Schiff base-functionalized carbon quantum dots to a reaction solvent, followed by a solvothermal reaction.
2. The method for preparing the antimony-based anode material as described in claim 1, characterized in that, The preparation method of the Schiff base-functionalized carbon quantum dots is as follows: Amino-functionalized carbon quantum dots can be prepared by mixing amino-functionalized carbon quantum dots, alkyl ketones, and p-toluenesulfonic acid, and then carrying out a Schiff base reaction at 60-70℃.
3. The method for preparing the antimony-based anode material as described in claim 2, characterized in that, The alkyl ketone has ≥10 carbon atoms.
4. The method for preparing the antimony-based anode material as described in claim 2, characterized in that, The preparation method of the amino-functionalized carbon quantum dots is as follows: Citric acid and organic amines are dissolved in deionized water to obtain a mixed solution. The mixed solution is sealed and subjected to hydrothermal reaction, then cooled to room temperature to obtain a reaction solution. The reaction solution is filtered through a microporous membrane and then dialyzed.
5. The method for preparing the antimony-based anode material as described in claim 4, characterized in that, The organic amine is a dialkyl primary amine.
6. The method for preparing the antimony-based anode material as described in claim 1, characterized in that, The phosphorus source is an anionic phosphorus-containing imidazole ionic liquid.
7. The method for preparing the antimony-based anode material as described in claim 1, characterized in that, The antimony source is any one of antimony trichloride, potassium antimony tartrate, antimony nitrate, or antimony glycolate.
8. The method for preparing the antimony-based anode material as described in claim 1, characterized in that, The temperature for the solvothermal reaction is 140-180℃.
9. An antimony-based anode material, characterized in that, It is prepared by the method for preparing the antimony-based anode material according to any one of claims 1-8.
10. A lithium-ion battery, characterized in that, Including the antimony-based anode material as described in claim 9.