CN111187948A - A lithium-aluminum alloy anode material with controllable phase composition, preparation method and application - Google Patents
A lithium-aluminum alloy anode material with controllable phase composition, preparation method and application Download PDFInfo
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- CN111187948A CN111187948A CN202010036664.9A CN202010036664A CN111187948A CN 111187948 A CN111187948 A CN 111187948A CN 202010036664 A CN202010036664 A CN 202010036664A CN 111187948 A CN111187948 A CN 111187948A
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- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 61
- 239000000203 mixture Substances 0.000 title claims abstract description 7
- 238000002360 preparation method Methods 0.000 title claims description 17
- 239000010405 anode material Substances 0.000 title description 2
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 60
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 58
- 229910052751 metal Inorganic materials 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 46
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 30
- 239000000956 alloy Substances 0.000 claims abstract description 30
- 239000007773 negative electrode material Substances 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims description 36
- 238000001816 cooling Methods 0.000 claims description 30
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 21
- 229910052782 aluminium Inorganic materials 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 16
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 239000003792 electrolyte Substances 0.000 claims description 5
- 229910001416 lithium ion Inorganic materials 0.000 claims description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 4
- 239000012298 atmosphere Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910017073 AlLi Inorganic materials 0.000 claims description 3
- AHLBNYSZXLDEJQ-FWEHEUNISA-N orlistat Chemical compound CCCCCCCCCCC[C@H](OC(=O)[C@H](CC(C)C)NC=O)C[C@@H]1OC(=O)[C@H]1CCCCCC AHLBNYSZXLDEJQ-FWEHEUNISA-N 0.000 claims description 3
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 210000001787 dendrite Anatomy 0.000 abstract description 7
- 230000001629 suppression Effects 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 28
- 229910052742 iron Inorganic materials 0.000 description 14
- 239000002994 raw material Substances 0.000 description 14
- 239000010406 cathode material Substances 0.000 description 12
- 238000002441 X-ray diffraction Methods 0.000 description 8
- 238000005266 casting Methods 0.000 description 8
- 238000000465 moulding Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 229910001148 Al-Li alloy Inorganic materials 0.000 description 2
- 239000012300 argon atmosphere Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011530 conductive current collector Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 150000002642 lithium compounds Chemical class 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 229910010199 LiAl Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009831 deintercalation Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C24/00—Alloys based on an alkali or an alkaline earth metal
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- 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
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- 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
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- H01M4/405—Alloys based on lithium
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- 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
- H01M4/46—Alloys based on magnesium or aluminium
- H01M4/463—Aluminium based
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- 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
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Abstract
本发明提供一种物相组分可控的锂铝合金负极材料，所述负极材料为骨架状锂铝合金，或者为骨架状锂铝合金以及填充在所述骨架中的金属锂构成的合金。本发明提供的锂铝合金，对纯金属锂的性能作了修饰，既保持了锂容量优点，又改善了枝晶抑制效果，形成的锂铝合金为三维骨架结构，用作负极材料提高了电池充放电循环寿命。本发明提供的锂铝合金，对纯金属锂的性能作了修饰，既保持了锂容量优点，又改善了枝晶抑制效果，形成的锂铝合金为三维骨架结构，用作负极材料提高了电池充放电循环寿命。
The present invention provides a lithium-aluminum alloy negative electrode material with controllable phase and composition. The negative electrode material is a skeleton-shaped lithium-aluminum alloy, or an alloy composed of a skeleton-shaped lithium-aluminum alloy and metallic lithium filled in the skeleton. The lithium-aluminum alloy provided by the invention modifies the properties of pure metal lithium, not only maintains the advantages of lithium capacity, but also improves the dendrite suppression effect. Charge-discharge cycle life. The lithium-aluminum alloy provided by the invention modifies the properties of pure metal lithium, not only maintains the advantages of lithium capacity, but also improves the dendrite suppression effect. Charge-discharge cycle life.
Description
Technical Field
The invention belongs to the technical field of non-ferrous metallurgy and secondary battery cathode materials, and particularly relates to a preparation method of a phase component-controllable lithium-aluminum alloy cathode material and a lithium ion battery adopting the cathode material.
Background
The metallic lithium has extremely high theoretical specific capacity (3860mAh/g) and the most negative electrode potential (-3.04V vs. SHE), and is the most promising next-generation lithium battery negative electrode material. However, the formation of lithium dendrites and the reaction of metallic lithium with the electrolyte during cycling results in a decrease in the battery charge-discharge cycling efficiency and an increase in the interfacial resistance; the generation of "dendrites" and "dead lithium" brings about problems of safety and loss of electrode active materials, and the like, and severely restricts the application of the metallic lithium negative electrode. In addition, the metal lithium also has the characteristics of high activity, poor air stability and the like, and the difficulty in the processing and transportation process is increased. In recent years, it has become an important research direction in the battery field to suppress the formation of lithium dendrites and improve the safety and stability of a lithium secondary battery metallic lithium negative electrode.
The three-dimensional structure negative electrode adopts a three-dimensional structure conductive current collector or a three-dimensional structure hollow material as a framework, and metal lithium is filled in the framework to form the composite negative electrode with a three-dimensional conductive network. The composite structure can effectively improve the electric field distribution in the metal lithium negative electrode and at the interface, inhibit the dendritic growth of the metal lithium through the porous microstructure, and improve the multiplying power performance of the negative electrode. Meanwhile, the three-dimensional conductive network is beneficial to reducing the accumulation of 'dead lithium' in the negative electrode and reducing the cycle capacity loss of the negative electrode. Is one of the most feasible technical schemes acknowledged in the metal lithium battery industry at present.
For example, patent application No. CN94104418 discloses a lithium aluminum alloy for a battery cathode material and a manufacturing method thereof, wherein the lithium aluminum alloy is an β -phase LiAl alloy and is characterized by containing 18-24 wt.% of lithium and the balance being aluminumIn the process, the phase change occurs in the lithium deintercalation process, which causes the volume change of the negative electrode material. For another example, CN103290293 provides a method for preparing a lithium aluminum alloy with aluminum content of 0.1-4.0 wt.%, but this method can only prepare a lithium solid solution with aluminum solid-dissolved in lithium lattice, and does not form a compound with a three-dimensional skeleton structure, and cannot achieve the effect of inhibiting lithium dendrite. Patent CN110120502 provides a lithium-aluminium alloy phase Al with three-dimensional skeleton structure4Li9However, the preparation method cannot freely regulate and control the phase composition of the Li-Al alloy and the content of active Li.
Disclosure of Invention
Aiming at the problems and the defects in the prior art, the invention provides the phase component-controllable lithium-aluminum alloy cathode material and the preparation method thereof, the process is simple, and the lithium-aluminum alloy cathode material is suitable for large-scale production.
The invention is realized by the following technical scheme:
the phase composition-controllable lithium-aluminum alloy negative electrode material is a skeleton-shaped lithium-aluminum alloy or a lithium-aluminum alloy composed of the skeleton-shaped lithium-aluminum alloy and metal lithium filled in the skeleton.
Optionally, the lithium-aluminum alloy is metal lithium and metal aluminum, or an alloy formed by metal lithium, metal aluminum and metal M, wherein the metal M is one or more of Si, Mg, Ag, Sn, Cu, B, and W; the phase of the lithium-aluminum alloy is one or more of AlLi, Al2Li3, Al4Li9, LiMx, AlLixMy, Li, Al and M.
Preferably, the molar ratio of the metal aluminum, lithium and M in the lithium aluminum alloy is 1: 1-9: 0 to 0.1.
The invention also provides a lithium ion battery, which comprises a battery shell, an electrode group and electrolyte, wherein the electrode group and the electrolyte are sealed in the battery shell, the electrode group comprises a positive electrode, a diaphragm and a negative electrode, and the negative electrode adopts the negative electrode material.
The invention also provides a preparation method of the phase component-controllable lithium-aluminum alloy cathode material, which comprises the following specific steps:
s1, fully mixing a certain amount of metal aluminum and metal lithium or metal lithium, metal aluminum and metal M in an inert atmosphere, sequentially and respectively heating for a certain time at different sintering temperatures and fully stirring to obtain a liquid alloy;
and S2, cooling the liquid alloy prepared in the S1, and processing the cooled alloy into an alloy negative plate with different phase compositions.
According to the actual proportion of aluminum, lithium and M, after cooling, a skeleton-shaped lithium-aluminum alloy and an alloy with different phases formed by metal lithium filled in the skeleton are respectively formed, wherein the skeleton-shaped lithium-aluminum alloy phase may be one or more of AlxLiy, AlLixMy and LiMx.
Preferably, the inert atmosphere in S1 is argon.
Preferably, the heating mode in S1 is multi-stage temperature control, the first stage temperature is 181-320 ℃, and the heating time is 5-40 minutes; the temperature of the second section is 330-760 ℃, and the heating time is 15-40 minutes; the stirring time is 20-80 minutes.
Preferably, the temperature reduction treatment in S2 is realized by a cooling system control cabinet, and the cooling speed is 20 ℃/S to 80 ℃/S.
Preferably, the processing method in the step 2 is one or more of casting, rolling and stamping.
Compared with the prior art, the invention has the beneficial effects that:
the lithium-aluminum alloy provided by the invention modifies the performance of pure metal lithium, not only maintains the advantage of lithium capacity, but also improves the dendritic crystal inhibition effect, and the formed lithium-aluminum alloy has a three-dimensional framework structure and is used as a negative electrode material to prolong the charge-discharge cycle life of a battery. The negative electrode with the three-dimensional framework structure is a composite negative electrode with a three-dimensional conductive network formed by filling metal lithium or a lithium compound with a disintercalable property in a three-dimensional conductive current collector or a three-dimensional hollow nano material serving as a framework. As can be seen from XRD, the phases of examples 1, 2, 3 and 4 are an aluminum lithium intermetallic compound and metal lithium and a deintercalable lithium compound filled therein, indicating that they form a three-dimensional skeleton structure.
Due to the existence of Li element in the framework, the lithium-philic lithium ion material has lithium-philic property, and can provide more uniform deposition sites for Li ions, thereby reducing the generation of lithium dendrites. Meanwhile, the three-dimensional structure can effectively improve the electric field distribution in the metal lithium cathode and at the interface, inhibit the dendritic growth of the metal lithium through the porous microstructure, reduce the product of 'dead lithium' in the cathode, improve the multiplying power performance of the cathode and reduce the cycle capacity loss of the cathode.
Drawings
FIG. 1a is an XRD pattern of a lithium aluminum alloy negative electrode material prepared in example 1 of the present invention;
FIG. 1b is an XRD pattern of a lithium aluminum alloy negative electrode material prepared in example 2 of the present invention;
FIG. 1c is an XRD pattern of a lithium aluminum alloy negative electrode material prepared in example 3 of the present invention;
FIG. 1d is an XRD pattern of a lithium aluminum alloy negative electrode material prepared in example 4 of the present invention;
FIG. 2 is an SEM image of a lithium aluminum alloy negative electrode material prepared in example 3 of the present invention; it can be seen from the figure that the lithium aluminum alloy prepared according to example 3 has a loose porous structure;
fig. 3 is an SEM image of a lithium aluminum alloy negative electrode material prepared in example 4 of the present invention. It can be seen from the figure that the lithium aluminum alloy prepared according to example 4 has a loose porous structure.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
Example 1
In this embodiment, the preparation method of the lithium aluminum alloy negative electrode material specifically includes the following steps:
pouring the molten liquid alloy into an iron mold for casting molding, cooling at a cooling speed of 50 ℃/s, and stamping the molten liquid alloy into an alloy negative plate by using a stamping machine after cooling to room temperature;
the XRD pattern of the lithium aluminum alloy negative electrode material prepared in this example is shown in fig. 1a, and the phase components are mainly solid solutions in which AlLi is solid-dissolved in Al lattice with the balance being Li.
Example 2
In this embodiment, the preparation method of the lithium aluminum alloy negative electrode material specifically includes the following steps:
pouring the molten liquid alloy into an iron mold for casting molding, cooling at a cooling speed of 60 ℃/s, and stamping the molten liquid alloy into an alloy negative plate by using a stamping machine after cooling to room temperature;
the XRD pattern of the lithium-aluminum alloy cathode material prepared in this example is shown in FIG. 1b, and the phase component is mainly Al2Li3The balance being Al4Li9。
Example 3
In this embodiment, the preparation method of the lithium aluminum alloy negative electrode material specifically includes the following steps:
pouring the molten liquid alloy into an iron mold for casting molding, cooling at a cooling speed of 20 ℃/s, and rolling to form an alloy negative plate by using a rolling machine after cooling to room temperature;
lithium aluminum prepared in this exampleThe XRD pattern of the alloy cathode material is shown in figure 1c, and the phase component is mainly Al2Li3、Al4Li9And metallic Li.
Example 4
In this embodiment, the preparation method of the lithium aluminum alloy negative electrode material specifically includes the following steps:
and 2, pouring the molten liquid alloy into an iron mold for casting molding, cooling at the cooling speed of 70 ℃/s, cooling to room temperature, and then rolling into an alloy negative plate by using a rolling machine.
The XRD pattern of the lithium-aluminum alloy cathode material prepared in this example is shown in FIG. 1d, and the phase component is mainly Al4Li9And metallic Li.
Example 5
In this embodiment, the preparation method of the lithium aluminum alloy negative electrode material specifically includes the following steps:
and 2, pouring the molten liquid alloy into an iron mold for casting molding, cooling at a cooling speed of 55 ℃/s, and stamping the molten liquid alloy into an alloy negative plate by using a stamping machine after cooling to room temperature.
Example 6
In this embodiment, the preparation method of the lithium aluminum alloy negative electrode material specifically includes the following steps:
And 2, pouring the molten liquid alloy into an iron mold for casting molding, cooling at the cooling speed of 35 ℃/s, cooling to room temperature, and stamping into the alloy negative plate by using a stamping machine.
Example 7
The preparation method of the lithium-aluminum alloy cathode material comprises the following specific steps:
Fully stirring for 45 minutes;
and 2, pouring the molten liquid alloy into an iron mold for casting molding, cooling at the cooling speed of 80 ℃/s, cooling to room temperature, and stamping into the alloy negative plate by using a stamping machine.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit and scope of the present invention.
The lithium aluminum alloys prepared in examples 1, 2, 3, 4, 5, 6, and 7 were used as negative electrode materials for charge and discharge experiments, respectively, to measure the performance of the lithium aluminum alloy of the present invention. The anode material adopts lithium cobaltate, and the diaphragm adopts Al-coated2O3The button cell is assembled by the PP film. The cycle performance of the battery was evaluated by 0.2C charge and discharge.
Comparative example 1
In addition, a lithium-aluminum alloy was prepared according to the method of CN94104418, and a charge and discharge experiment was performed under the same conditions.
Comparative example 2
In addition, a lithium-aluminum alloy was prepared according to the method of CN103290293, and a charge and discharge experiment was performed under the same conditions.
Comparative example 3
Further, a charge and discharge experiment was performed under the same conditions using a commercially pure Li sheet as a negative electrode material.
As can be seen from the table, the lithium-aluminum alloy of the invention is a three-dimensional framework structure lithium-aluminum alloy or a framework structure lithium-aluminum alloy and the metal lithium filled in the framework, the performance of the pure metal lithium is modified, the lithium capacity advantage is maintained, the dendritic crystal inhibition effect is improved, and the lithium-aluminum alloy is used as a secondary battery cathode material to prolong the charge-discharge cycle life of the battery.
| Numbering | Number of cycles | Capacity retention ratio% | Number of cycles | Capacity retention ratio% |
| Example 1 | 50 | 82.3 | 100 | 70.7 |
| Example 2 | 50 | 92.2 | 100 | 85.4 |
| Example 3 | 50 | 97.6 | 100 | 94.1 |
| Example 4 | 50 | 97.0 | 100 | 95.4 |
| Example 5 | 50 | 95.4 | 100 | 91.8 |
| Example 6 | 50 | 97.3 | 100 | 95.9 |
| Example 7 | 50 | 97.6 | 100 | 96.2 |
| Comparative example 1 | 50 | 77.9 | 100 | 65.7 |
| Comparative example 2 | 50 | 90.6 | 100 | 82.8 |
| Comparative example 3 | 50 | 96.2 | 100 | 92.3 |
Claims (8)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725513A (en) * | 2020-06-29 | 2020-09-29 | 珠海冠宇电池股份有限公司 | Composite shape memory alloy cathode, preparation method thereof and lithium battery |
| CN112736251A (en) * | 2020-12-30 | 2021-04-30 | 电子科技大学 | Three-dimensional porous material containing lithium alloy skeleton network, composite lithium negative electrode material and preparation method thereof |
| CN113258035A (en) * | 2021-05-12 | 2021-08-13 | 哈尔滨工业大学 | Dendrite-free alloy cathode with solid-liquid phase conversion mechanism and preparation method thereof |
| CN114050253A (en) * | 2021-10-21 | 2022-02-15 | 中山大学 | Preparation method and application of nano lithium alloy |
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| CN110120502A (en) * | 2018-02-05 | 2019-08-13 | 中国科学院物理研究所 | A kind of lithium metal alloy material of cathode and its preparation method and application |
| CN110660967A (en) * | 2018-06-29 | 2020-01-07 | 中能中科（天津）新能源科技有限公司 | Lithium battery cathode and preparation method thereof |
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Patent Citations (2)
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|---|---|---|---|---|
| CN110120502A (en) * | 2018-02-05 | 2019-08-13 | 中国科学院物理研究所 | A kind of lithium metal alloy material of cathode and its preparation method and application |
| CN110660967A (en) * | 2018-06-29 | 2020-01-07 | 中能中科（天津）新能源科技有限公司 | Lithium battery cathode and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725513A (en) * | 2020-06-29 | 2020-09-29 | 珠海冠宇电池股份有限公司 | Composite shape memory alloy cathode, preparation method thereof and lithium battery |
| CN112736251A (en) * | 2020-12-30 | 2021-04-30 | 电子科技大学 | Three-dimensional porous material containing lithium alloy skeleton network, composite lithium negative electrode material and preparation method thereof |
| CN112736251B (en) * | 2020-12-30 | 2022-06-03 | 电子科技大学 | Three-dimensional porous material containing lithium alloy framework network, composite lithium anode material and preparation method thereof |
| CN113258035A (en) * | 2021-05-12 | 2021-08-13 | 哈尔滨工业大学 | Dendrite-free alloy cathode with solid-liquid phase conversion mechanism and preparation method thereof |
| CN114050253A (en) * | 2021-10-21 | 2022-02-15 | 中山大学 | Preparation method and application of nano lithium alloy |
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