CN117790765A - Antimony-based multielement alloy material and application thereof in lithium ion battery - Google Patents
Antimony-based multielement alloy material and application thereof in lithium ion battery Download PDFInfo
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- CN117790765A CN117790765A CN202311785089.2A CN202311785089A CN117790765A CN 117790765 A CN117790765 A CN 117790765A CN 202311785089 A CN202311785089 A CN 202311785089A CN 117790765 A CN117790765 A CN 117790765A
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- 239000000956 alloy Substances 0.000 title claims abstract description 43
- 229910052787 antimony Inorganic materials 0.000 title claims abstract description 33
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 title claims abstract description 32
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 15
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 6
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 6
- 239000004966 Carbon aerogel Substances 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 28
- 238000000498 ball milling Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 10
- 239000011240 wet gel Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 230000032683 aging Effects 0.000 claims description 5
- 238000000137 annealing Methods 0.000 claims description 5
- 238000003763 carbonization Methods 0.000 claims description 5
- 230000003203 everyday effect Effects 0.000 claims description 5
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 5
- 239000007773 negative electrode material Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052744 lithium Inorganic materials 0.000 abstract description 13
- 229910001325 element alloy Inorganic materials 0.000 abstract description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 18
- 229910052786 argon Inorganic materials 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 238000001035 drying Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 6
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 6
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 6
- 239000003575 carbonaceous material Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 238000004108 freeze drying Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- 229910004761 HSV 900 Inorganic materials 0.000 description 1
- 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
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 238000003917 TEM image Methods 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- -1 antimony metals Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- AWAAXGSYKBMTQM-UHFFFAOYSA-N but-2-ene;carbonic acid Chemical compound CC=CC.OC(O)=O AWAAXGSYKBMTQM-UHFFFAOYSA-N 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009831 deintercalation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 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
- 230000010287 polarization Effects 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction 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
Abstract
The invention relates to the technical field of lithium ion batteries, in particular to an antimony-based multi-component alloy material and application thereof in a lithium ion battery, wherein the antimony-based multi-component alloy material comprises the following elements in percentage by weight: 7.5-15% of A, 1-3% of B, 0.01-0.1% of C, 10-20% of Sn and the balance of Sb; wherein A is a transition metal element; b is a nonmetallic element; c is a rare earth element, and the lithium battery prepared from the antimony-based multi-element alloy material has higher specific discharge capacity and cycle stability, and the electrochemical performance is further improved after the lithium battery is compounded with carbon aerogel.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to an antimony-based multielement alloy material and application thereof in lithium ion batteries.
Background
The lithium ion battery is a high energy density power supply and has the outstanding advantages of high working voltage, high energy density, long cycle life, no environmental pollution and the like. The negative electrode material has great influence on the capacity and the cycle life of the lithium ion battery, and has become the research focus of the worldwide battery industry.
Graphite or modified carbon materials are conventional negative electrode materials and have been commercialized. However, since only 1 lithium is intercalated into every 6 carbons, the theoretical capacity is low. Meanwhile, the lithium intercalation potential of the carbon material is close to the precipitation potential of lithium, so that the safety of the battery in the charging and discharging processes is affected. Thus, many researchers have focused their eyes on non-carbon materials.
Antimony and tin in non-carbon materials are of great interest due to their high theoretical capacity, small electrode polarization and moderate operating voltages. However, tin and antimony metals can generate serious volume expansion in the charge and discharge process, and the cathode structure cannot be kept stable after deintercalation, so that the material is pulverized and collapsed, and finally the material is broken, and the electrode cycle stability and the rate capability are poor, so that the development of the alloy material with high specific capacity and high cycle stability has important significance for expanding the commercial application scene of the lithium ion battery.
Disclosure of Invention
The invention aims to: aiming at the technical problems, the invention provides an antimony-based multielement alloy material and application thereof in a lithium ion battery.
The technical scheme adopted is as follows:
an antimony-based multi-component alloy material comprising the following elements in weight percent:
7.5-15% of A, 1-3% of B, 0.01-0.1% of C, 10-20% of Sn and the balance of Sb;
wherein A is a transition metal element;
b is a nonmetallic element;
c is rare earth element.
Further, a is any one or a combination of Fe, co, ni, cu, zn.
Further, A is Fe, co and Ni, and the weight ratio of Fe, co and Ni is 1-5:1-5:1-5.
Further, B is any one or more of Si, P and S.
Further, B is P.
Further, C is any one or a combination of a plurality of La, ce, sm, dy.
Further, C is Ce.
The invention also provides application of the antimony-based multi-element alloy material in a lithium ion battery.
Further, the negative electrode material of the lithium ion battery comprises a combination of the antimony-based multi-component alloy material and carbon aerogel.
Further, the preparation method of the composition comprises the following steps:
weighing the raw materials according to a proportion, ball-milling uniformly under the protection of inert gas, pressing the obtained mixture into a cylinder, using a hexahedral press to synthesize the antimony-based multielement alloy material at the pressure of 4-6GP and the temperature of 1200-1400 ℃, annealing the material at the temperature of 700-900 ℃ and then crushing the material and ball-milling the material again to obtain nano-grade alloy powder, dispersing the alloy powder into absolute ethyl alcohol to obtain dispersion liquid, adding formaldehyde, resorcinol and sodium carbonate into water, mixing the obtained solution and the dispersion liquid, heating the mixture to 50-70 ℃ for sealing reaction for 60-120 hours, standing and ageing the wet gel, placing the wet gel in tertiary butanol for 5-10 days, replacing fresh tertiary butanol every day, and finally performing carbonization treatment at the temperature of 850-950 ℃ under the protection of inert gas.
The invention has the beneficial effects that:
the invention provides an antimony-based multielement alloy material, the nanoscale size of which can reduce the deformation stress generated by active substances in the process of removing lithium/sodium, improve the reaction efficiency, and can effectively buffer the volume change in the circulating process, thereby inhibiting pulverization and agglomeration, wherein transition metal elements are inactive substances, start to agglomerate to form free states in the process of removing lithium ions, slow down the intense volume shrinkage in the process of removing lithium, play a role of stabilizing a framework, improve the circulating performance, enable the nonmetallic elements to form a compound with the transition metal elements and rare earth elements, have better circulating performance and stability due to the high electron delocalization degree, lower oxidation state of the metal elements, form stronger covalent bonds, and prolong the service life of lithium batteries due to the introduction of proper nonmetallic elements, the rare earth element has certain solid solubility in metal, can generate micro-alloying effect in transition metal element with small solid solubility, meanwhile, the segregation of the rare earth element at the grain boundary inhibits the growth of crystal grains, strengthens the grain boundary, improves the stability of the alloy material in the charge and discharge process, improves the cycle performance of the alloy material as a negative electrode material, and the carbon aerogel not only has good conductivity, but also has a special three-dimensional network structure, can fully exert the lithium storage performance of the alloy material, improves the agglomeration phenomenon of the alloy material, buffers the volume expansion in the charge and discharge process, is beneficial to better contact between active substances and electrolyte, further improves the cycle performance, and the lithium battery prepared by the antimony-based multi-element alloy material has higher discharge specific capacity and cycle stability after being compounded with carbon, the electrochemical performance is further improved.
Drawings
FIG. 1 is a TEM image of the antimony-based multi-component alloy material prepared in example 1.
Detailed Description
The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention. The technology not mentioned in the present invention refers to the prior art, and unless otherwise indicated, the following examples and comparative examples are parallel tests, employing the same processing steps and parameters.
Example 1:
an antimony-based multi-component alloy material comprising the following elements in weight percent:
6.5% of Fe, 6.5% of Co, 1.5% of Ni, 2.5% of P, 0.05% of Ce, 16% of Sn and the balance of Sb;
the preparation method comprises the following steps:
weighing Fe powder, co powder, ni powder, P powder, ce powder, sn powder and Sb powder according to the weight ratio, mechanically ball-milling for 10 hours in a planetary ball mill under the protection of argon gas, uniformly mixing, drying the obtained mixture after ball milling, pressing into a cylinder in a mould under the pressure of 5MPa, then using a hexahedral press to synthesize the antimony-based multielement alloy material at the pressure of 6GP and the temperature of 1300 ℃ for 30 minutes, taking out, annealing for 10 hours at 800 ℃, crushing, mechanically ball-milling for 10 hours in the planetary ball mill under the protection of argon gas at the rotating speed of 200r/min, and drying to obtain the alloy powder with the particle size of 10-200 nm.
Example 2:
an antimony-based multi-component alloy material comprising the following elements in weight percent:
6.5% of Fe, 6.5% of Co, 1.5% of Ni, 3% of P, 0.1% of Ce, 20% of Sn and the balance of Sb;
the preparation method comprises the following steps:
weighing Fe powder, co powder, ni powder, P powder, ce powder, sn powder and Sb powder according to the weight ratio, mechanically ball-milling for 10 hours in a planetary ball mill under the protection of argon gas, uniformly mixing, drying the obtained mixture after ball milling, pressing into a cylinder in a mould under the pressure of 5MPa, then using a hexahedral press to synthesize the antimony-based multielement alloy material at the pressure of 6GP and the temperature of 1300 ℃ for 30 minutes, taking out, annealing for 10 hours at 800 ℃, crushing, mechanically ball-milling for 10 hours in the planetary ball mill under the protection of argon gas at the rotating speed of 200r/min, and drying to obtain the alloy powder with the particle size of 10-200 nm.
Example 3:
an antimony-based multi-component alloy material comprising the following elements in weight percent:
6.5% of Fe, 6.5% of Co, 1.5% of Ni, 1% of P, 0.01% of Ce, 10% of Sn and the balance of Sb;
the preparation method comprises the following steps:
weighing Fe powder, co powder, ni powder, P powder, ce powder, sn powder and Sb powder according to the weight ratio, mechanically ball-milling for 10 hours in a planetary ball mill under the protection of argon gas, uniformly mixing, drying the obtained mixture after ball milling, pressing into a cylinder in a mould under the pressure of 5MPa, then using a hexahedral press to synthesize the antimony-based multielement alloy material at the pressure of 6GP and the temperature of 1300 ℃ for 30 minutes, taking out, annealing for 10 hours at 800 ℃, crushing, mechanically ball-milling for 10 hours in the planetary ball mill under the protection of argon gas at the rotating speed of 200r/min, and drying to obtain the alloy powder with the particle size of 10-200 nm.
Example 4:
a method for preparing a composition:
adding 1g and 0.1g of PVP (polyvinyl pyrrolidone) into 20ml of absolute ethyl alcohol, carrying out ultrasonic oscillation for 30min to obtain a dispersion liquid, adding 60g of formaldehyde, 110g of resorcinol and 1g of sodium carbonate into 250ml of deionized water, uniformly mixing to obtain a solution, adding the dispersion liquid into the solution, stirring and blending, heating to 70 ℃ for sealing reaction for 120h, standing and ageing for 24h to obtain wet gel, placing the wet gel into tertiary butanol for solvent replacement for 5d, replacing fresh tertiary butanol every day, carrying out low-temperature freeze drying, and heating to 950 ℃ for carbonization treatment for 2h at a speed of 15 ℃/min under the protection of argon.
Example 5:
a method for preparing a composition:
adding 1g and 0.1g of PVP (polyvinyl pyrrolidone) into 20ml of absolute ethyl alcohol, carrying out ultrasonic oscillation for 30min to obtain a dispersion liquid, adding 60g of formaldehyde, 110g of resorcinol and 1g of sodium carbonate into 250ml of deionized water, uniformly mixing to obtain a solution, adding the dispersion liquid into the solution, stirring and blending, heating to 70 ℃ for sealing reaction for 120h, standing and ageing for 24h to obtain wet gel, placing the wet gel into tertiary butanol for solvent replacement for 5d, replacing fresh tertiary butanol every day, carrying out low-temperature freeze drying, and heating to 950 ℃ for carbonization treatment for 2h at a speed of 15 ℃/min under the protection of argon.
Example 6:
a method for preparing a composition:
adding 1g and 0.1g of PVP (polyvinyl pyrrolidone) into 20ml of absolute ethyl alcohol, carrying out ultrasonic oscillation for 30min to obtain a dispersion liquid, adding 60g of formaldehyde, 110g of resorcinol and 1g of sodium carbonate into 250ml of deionized water, uniformly mixing to obtain a solution, adding the dispersion liquid into the solution, stirring and blending, heating to 70 ℃ for sealing reaction for 120h, standing and ageing for 24h to obtain wet gel, placing the wet gel into tertiary butanol for solvent replacement for 5d, replacing fresh tertiary butanol every day, carrying out low-temperature freeze drying, and heating to 950 ℃ for carbonization treatment for 2h at a speed of 15 ℃/min under the protection of argon.
Performance test:
electrochemical performance test was performed using CR2032 type coin cells, and the CR2032 type coin cells were assembled in a glove box, and the active material, conductive carbon black, and binder PVDF (HSV 900) prepared in examples 1 to 6 were mixed according to a mass ratio of 80:10:10, uniformly coating on a copper foil after fully mixing and grinding, vacuum drying for 12 hours at 120 ℃ in a vacuum drying oven, taking a pure lithium sheet as a counter electrode, taking Celgard2300 as a diaphragm material, and adopting 1M LiPF 6 The electrolyte solution of ethylene carbonate and dimethyl ethylene carbonate (volume ratio is 1:1) is subjected to 500 charge-discharge cycles at 25 ℃ and 1000mA/g between 0.01 and 2.5V by using a LAND CT2001A battery tester, and the test results are shown in table 1;
table 1:
as shown in Table 1, the lithium battery prepared from the antimony-based multi-element alloy material has higher specific discharge capacity and cycle stability, and the electrochemical performance is further improved after the lithium battery is compounded with carbon aerogel.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An antimony-based multi-component alloy material, which is characterized by comprising the following elements in percentage by weight:
7.5-15% of A, 1-3% of B, 0.01-0.1% of C, 10-20% of Sn and the balance of Sb;
wherein A is a transition metal element;
b is a nonmetallic element;
c is rare earth element.
2. The antimony-based multi-component alloy material according to claim 1, wherein a is any one or a combination of Fe, co, ni, cu, zn.
3. The antimony-based multi-component alloy material according to claim 2, wherein a is Fe, co and Ni, and the weight ratio of Fe, co and Ni is 1-5:1-5:1-5.
4. The antimony-based multi-component alloy material according to claim 1, wherein B is any one or a combination of Si, P, S.
5. The antimony-based multi-component alloy material according to claim 4, wherein B is P.
6. The antimony-based multi-component alloy material according to claim 1, wherein C is any one or a combination of more than one of La, ce, sm, dy.
7. The antimony-based multi-component alloy material according to claim 6, wherein C is Ce.
8. Use of the antimony-based multi-component alloy material according to any one of claims 1-7 in lithium ion batteries.
9. The use of claim 8, wherein the negative electrode material of the lithium ion battery comprises a combination of the antimony-based multi-alloy material and a carbon aerogel.
10. The use according to claim 9, wherein the composition is prepared by the following method:
weighing the raw materials according to a proportion, ball-milling uniformly under the protection of inert gas, pressing the obtained mixture into a cylinder, using a hexahedral press to synthesize the antimony-based multielement alloy material at the pressure of 4-6GP and the temperature of 1200-1400 ℃, annealing the material at the temperature of 700-900 ℃ and then crushing the material and ball-milling the material again to obtain nano-grade alloy powder, dispersing the alloy powder into absolute ethyl alcohol to obtain dispersion liquid, adding formaldehyde, resorcinol and sodium carbonate into water, mixing the obtained solution and the dispersion liquid, heating the mixture to 50-70 ℃ for sealing reaction for 60-120 hours, standing and ageing the wet gel, placing the wet gel in tertiary butanol for 5-10 days, replacing fresh tertiary butanol every day, and finally performing carbonization treatment at the temperature of 850-950 ℃ under the protection of inert gas.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311785089.2A CN117790765A (en) | 2023-12-22 | 2023-12-22 | Antimony-based multielement alloy material and application thereof in lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311785089.2A CN117790765A (en) | 2023-12-22 | 2023-12-22 | Antimony-based multielement alloy material and application thereof in lithium ion battery |
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| CN202311785089.2A Pending CN117790765A (en) | 2023-12-22 | 2023-12-22 | Antimony-based multielement alloy material and application thereof in lithium ion battery |
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