CN114261996A - Preparation method and application of single crystal high-nickel ternary material with completely modified surface - Google Patents
Preparation method and application of single crystal high-nickel ternary material with completely modified surface Download PDFInfo
- Publication number
- CN114261996A CN114261996A CN202111594661.8A CN202111594661A CN114261996A CN 114261996 A CN114261996 A CN 114261996A CN 202111594661 A CN202111594661 A CN 202111594661A CN 114261996 A CN114261996 A CN 114261996A
- Authority
- CN
- China
- Prior art keywords
- single crystal
- nickel ternary
- crystal high
- ternary material
- modified surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
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 discloses a preparation method and application of a single crystal high nickel ternary material with a completely modified surfacexByAnd (4) completely modifying. The method has simple and reliable process and low cost, can improve the cycle performance and the internal resistance of the material, and the prepared single crystal high-nickel ternary material has good electrochemical performance, is suitable for industrial production, and is particularly suitable for the field of power batteries, especially positive batteriesThe electrode material has good development prospect in application.
Description
Technical Field
The invention relates to a new energy material technology, in particular to a preparation method and application of a single crystal high-nickel ternary material with a completely modified surface.
Background
With the development of new energy technologies, advanced cathode materials having excellent discharge capacity and good stability are urgently needed to meet the increasing demand for high energy density Lithium Ion Batteries (LIBs). Among them, the high nickel ternary positive electrode material is considered as an ideal positive electrode material due to its high specific capacity, better electrochemical performance and environmental friendliness.
The most studied and widely used high-nickel ternary positive electrode material is the secondary spherical polycrystalline particles formed by agglomeration of small-grain crystals. However, the presence of grain boundaries in the primary particles limits Li+This makes it difficult for the high nickel ternary positive electrode material to fully exploit its high volumetric energy density advantage. In addition, a series of phase transitions may occur during charge and discharge, resulting in severe lattice distortion and formation of microcracks. The microcracks, which are the main factors of capacity fade, cause a significant change in the interface chemistry, for example, the formation of microcracks may cause destruction of the initially formed solid electrolyte interface film, resulting in more exposure of the active material, thereby further accelerating the interface side reaction, and further, the lithium ion diffusion resistance will increase due to the damaged diffusion path. The problem of polycrystalline particles can be well avoided by the single crystal high-nickel ternary cathode material with the submicron particle size, the formation of microcracks can be effectively reduced and the structural integrity can be maintained by the single crystal particles due to the uniform stress distribution and the good structural stability of the single crystal particles, and unfortunately, the side reaction at an electrode/electrolyte interface is serious due to the high specific surface area of the single crystal material, so that the coulombic efficiency is low and transition metals are dissolved into an organic electrolyte.
Surface modification is a widely used method to improve the stability of high nickel ternary positive electrode materials, and although it is helpful to have a surface modification layer with high stability and catalytic inertness, it is often difficult to achieve 100% coverage in synthesis due to the solid to solid wetting problem and the need to maintain shape during electrochemical cycling. The Atomic Layer Deposition (ALD) method is a method for uniformly modifying the surface of the high-nickel ternary cathode material by 100%, but the ALD method requires high-end technical equipment, special raw materials and high cost, and cannot realize industrial production. How to realize complete surface modification of the single crystal high nickel ternary material by using a simple method is a challenge to be solved urgently.
Disclosure of Invention
The invention aims to provide a preparation method and application of a single crystal high-nickel ternary material with a completely modified surface aiming at the defects of the prior art. The method has simple and reliable process and low cost, can improve the cycle performance of the material and the internal resistance of the material, and the prepared single crystal high-nickel ternary material has good electrochemical performance, is suitable for industrial production and has good development prospect in the field of power batteries, particularly in the application of battery anode materials.
The technical scheme for realizing the purpose of the invention is as follows:
a method for preparing a single crystal high nickel ternary material with a completely modified surface comprises the following steps:
1) uniformly mixing the high-nickel ternary precursor and a lithium source according to the molar ratio of the lithium source to the high-nickel ternary precursor of 1.0-1.06 to obtain a mixture, wherein the mixing speed is 200 r/min-300 r/min, and the mixing time is 30 min-120 min;
2) calcining the mixture obtained in the step 1) in an oxygen atmosphere to obtain a single crystal high-nickel ternary material matrix, wherein the oxygen concentration in the oxygen atmosphere is higher than 99.9%, the calcining temperature and the calcining time are 450-480 ℃, and the temperature is kept for 5 hours, and 750-900 ℃ is kept for 15 hours;
3) crushing and sieving the base material obtained in the step 2) to obtain single crystal high nickel ternary material single crystal particles with uniformly dispersed particle sizes, wherein the sieving screen is 300-500 meshes, and the particle size of the crushed single crystal high nickel ternary material single crystal particles is 2-3.5 um;
4) dispersing the single crystal high nickel ternary material single crystal particles obtained in the step 3) in a medium containing Mx(NO3)yOr MxClyIs slowly stirred for 1 hour at room temperature under the condition of introducing inert gas, and then MBH with the concentration of 0.078M-0.1M is added4Slowly dripping the ethanol solution into the mixed solution at the dripping speed of 2-30 ml/min, slowly stirring for 2 hours after dripping is finished, filtering the mixed solution, and drying the obtained filter residue, wherein the single crystal high nickel ternary material and the M are mixedx(NO3)yOr MxClyThe mass ratio of the ethanol solution is 1: 10-50, Mx(NO3)yOr MxClyThe concentration of the ethanol solution is 0.009M-0.02M, MxByThe addition amount of the surface modification layer is 0.5-5% of the mass of the single crystal high nickel ternary material substrate, the stirring speed is 20-100 r/min, the stirring time is 1-3 h, the drying temperature is 80-120 ℃, and the drying time is 12 h;
5) calcining the filter residue obtained in the step 4) under the protection of inert gas to obtain the single crystal high nickel ternary material with the completely modified surface, wherein the calcining temperature and the calcining time are 500 ℃, the temperature is kept for 120 min, and the atmosphere is one or more of argon or nitrogen.
The single-crystal high-nickel ternary precursor in the step 1) is nickel-cobalt-manganese or nickel-cobalt-aluminum hydroxide with a molecular formula of NixCoyM1-x-y(OH)2Wherein x is 0.65-0.95, and y is 0.01-0.2.
The lithium source in the step 1) is one or more of lithium hydroxide or lithium carbonate.
M described in step 4)x(NO3)yIs Mg (NO)3)2、Co(NO3)3、Mn(NO3)4、Fe(NO3)2、Al(NO3)3、Ca(NO3)2One or more of (a).
Said in step 4)M of (A)xClyIs TiCl4、MgCl2One or more of (a).
MBH described in step 4)4Is one or more of sodium borohydride, potassium borohydride or lithium borohydride.
M described in step 4)xByIs MgB2Or ZrB2Or CaB6Or TiB2Or CrB2Or AlB2Or Co2B, one or more of B.
The surface-completely-modified single-crystal high-nickel ternary material prepared by the preparation method of the surface-completely-modified single-crystal high-nickel ternary material.
The single crystal high nickel ternary material with the completely modified surface is applied to the anode material of the lithium ion battery.
The technical scheme includes that firstly, a single crystal high-nickel ternary material with uniform particle size distribution is prepared, then a simple liquid-solution method is utilized, reaction wetting with a reductive active material is adopted to construct a single crystal high-nickel ternary anode material coating with uniform surface and 100% modification, the single crystal high-nickel ternary anode material with complete surface modification can obviously improve the cycle performance and the rate capability, the manufacturing cost of the anode material is low, the process flow is simple, and industrial production is easy to realizexByThe surface modification layer can inhibit the generation of microcracks and reduce side reactions, thereby achieving the purpose of improving the cycle performance of the material, and the material has good development prospect in the field of power batteries.
The method has simple and reliable process and low cost, can improve the cycle performance of the material and the internal resistance of the material, and the prepared single crystal high-nickel ternary material has good electrochemical performance, is suitable for industrial production and has good development prospect in the field of power batteries, particularly in the application of battery anode materials.
Drawings
FIG. 1 is an SEM image of a nickel-cobalt-manganese single crystal ternary material in example 1 and comparative example 1;
FIG. 2 is a graph of rate capability of nickel cobalt manganese single crystal ternary materials in example 1 and comparative example 1;
fig. 3 is a graph of cycle performance of the nickel-cobalt-manganese single crystal ternary materials in example 1 and comparative example 1.
Detailed Description
The invention will be further illustrated by the following figures and examples, but is not limited thereto.
Example 1:
MgB2The preparation method of the single crystal high nickel ternary material with the completely modified surface comprises the following steps:
1) 200 g of Ni are weighed0.8Co0.1Mn0.1(OH)2Then, as a lithium source: weighing lithium hydroxide according to the molar ratio of the ternary precursor of 1.05, then putting the lithium hydroxide into a mixer to be uniformly mixed, putting the uniformly mixed mixture into an atmosphere furnace which is pre-aerated with oxygen, setting a calcination program, firstly preserving heat at 480 ℃ for 5h, then preserving heat at 750 ℃ for 15 h, and increasing the temperature rate at 5 ℃/min;
2) crushing the high-nickel ternary material obtained in the step 1), and then screening the crushed high-nickel ternary material through a 400-mesh screen to obtain a single-crystal high-nickel ternary material with uniformly dispersed particle sizes;
3) weighing 100 g of the single-crystal high-nickel ternary material obtained in the step 2), adding the single-crystal high-nickel ternary material into a 5L vacuum stirring reaction kettle, and adding 2L of Mg (NO) with the concentration of 0.009M3)2Is slowly stirred for 1 h, inert gas is introduced into the solution to sufficiently remove air in the solution, and then 50 ml of 0.078M NaBH is added4Injecting the solution into the reaction kettle at a dropping rate of 2 ml/min, slowly stirring for 3 hours after the dropping is finished to enable the solution to fully react, and then filtering, washing and drying the solution;
4) weighing 50 g of the material obtained in the step 3), placing the material in an atmosphere furnace which is pre-filled with argon, setting a calcination procedure, keeping the temperature at 400 ℃ for 2 h at a heating rate of 5 ℃/min, naturally cooling, and sieving with a 400-mesh sieve to obtain MgB2The surface of the single crystal high nickel ternary material is completely modified.
Example 2:
co2The preparation method of the single crystal high nickel ternary material with the completely modified surface B comprises the following steps:
1) 200 g of Ni are weighed0.8Co0.1Mn0.1(OH)2Then, as a lithium source: weighing lithium hydroxide according to the molar ratio of the ternary precursor of 1.05, then putting the lithium hydroxide into a mixer to be uniformly mixed, putting the uniformly mixed mixture into an atmosphere furnace which is pre-aerated with oxygen, setting a calcination program, firstly preserving heat at 480 ℃ for 5h, then preserving heat at 750 ℃ for 15 h, and increasing the temperature rate at 5 ℃/min;
2) crushing the high-nickel ternary material obtained in the step 1), and then screening the crushed high-nickel ternary material through a 400-mesh screen to obtain a single-crystal high-nickel ternary material with uniformly dispersed particle sizes;
3) weighing 100 g of the single-crystal high-nickel ternary material obtained in the step 2), adding the single-crystal high-nickel ternary material into a 5L vacuum stirring reaction kettle, and adding 2L of Mg (NO) with the concentration of 0.009M3)2The reaction solution was slowly stirred for 1 hour, an inert gas was introduced into the solution to sufficiently remove air therefrom, and then 40 ml of 0.078M KBH was added4And (3) injecting the solution into the reaction kettle, wherein the dropping speed is 2 ml/min, and after the dropping is finished, slowly stirring for 3 hours to ensure that the solution is fully reacted. Then filtering, washing and drying the solution;
4) weighing 50 g of the material obtained in the step 3), placing the material in an atmosphere furnace which is pre-filled with argon, setting a calcination procedure, keeping the temperature at 400 ℃ for 2 h at a heating rate of 5 ℃/min, naturally cooling, and sieving with a 400-mesh sieve to obtain Co2B, a single crystal high nickel ternary material with a completely modified surface.
Example 3:
a preparation method of a single crystal high nickel ternary material with a FeB surface completely modified comprises the following steps
1) 200 g of Ni are weighed0.8Co0.1Mn0.1(OH)2Then, as a lithium source: weighing lithium hydroxide according to the molar ratio of the ternary precursor of 1.05, then putting the lithium hydroxide into a mixer to be uniformly mixed, putting the uniformly mixed mixture into an atmosphere furnace which is pre-aerated with oxygen, setting a calcination program, firstly preserving heat at 480 ℃ for 5h, then preserving heat at 750 ℃ for 15 h, and increasing the temperature rate at 5 ℃/min;
2) crushing the high-nickel ternary material obtained in the step 1), and then screening the crushed high-nickel ternary material through a 400-mesh screen to obtain a single-crystal high-nickel ternary material with uniformly dispersed particle sizes;
3) weighing 100 g of the single-crystal high-nickel ternary material obtained in the step 2), adding the single-crystal high-nickel ternary material into a 5L vacuum stirring reaction kettle, and adding 2L of 0.009M Fe (NO)3)2The reaction solution was stirred slowly for 1 hour, an inert gas was introduced into the solution to sufficiently remove air therefrom, and then 23 ml of 0.078M KBH was added4And (3) injecting the solution into the reaction kettle, wherein the dropping speed is 2 ml/min, and after the dropping is finished, slowly stirring for 3 hours to ensure that the solution is fully reacted. Then filtering, washing and drying the solution;
4) weighing 50 g of the material obtained in the step 3), placing the material in an atmosphere furnace which is pre-filled with argon, setting a calcination procedure, keeping the temperature at 400 ℃ for 2 h, raising the temperature at a rate of 5 ℃/min, naturally cooling, and then sieving with a 400-mesh sieve to obtain the single crystal high nickel ternary material with the FeB surface completely modified.
Experimental comparative example 1:
1) 200 g of Ni are weighed0.8Co0.1Mn0.1(OH)2Then, as a lithium source: weighing lithium hydroxide according to the molar ratio of the ternary precursor of 1.05, then putting the lithium hydroxide into a mixer to be uniformly mixed, putting the uniformly mixed mixture into an atmosphere furnace which is pre-aerated with oxygen, setting a calcination program, firstly preserving heat at 480 ℃ for 5h, then preserving heat at 750 ℃ for 15 h, and increasing the temperature rate at 5 ℃/min;
2) crushing the nickel-cobalt-manganese ternary material obtained in the step 1), and then screening the crushed material through a 400-mesh screen to obtain a single crystal high-nickel ternary material with uniformly dispersed particle sizes.
And (3) performance testing:
the tests carried out in this example were carried out on a 2025 button cell basis, starting with sintered single-crystal ternary material and modified composite material as positive electrode active material, PVDF of type 5130 as binder, SP and KS-6 as conductive agents, NMP as solvent, in terms of active material: adhesive: the mass ratio of the conductive agent is 85: 5: 10 to a uniform slurry state.
The prepared anode slurry is adoptedUniformly coating a preparation device on an aluminum foil, transferring the aluminum foil into a vacuum drying oven at 120 ℃ for vacuum drying for 12 h, calculating the thickness to be achieved by rolling a pole piece according to the compaction density, performing rolling treatment, cutting the rolled pole piece into pole pieces with uniform thickness of 12 mm by using a cutting machine, and assembling the pole pieces into a button cell in a vacuum glove box, wherein a lithium piece is used as a counter electrode, a diaphragm of Celgard 2300 type is adopted, and LiFP is adopted6A base electrolyte.
The single crystal high nickel ternary material in example 1 and experimental comparative example 1 is subjected to electrochemical performance test (the test method is electricity deduction) and an electrochemical specific capacity curve is obtained, the results are shown in fig. 2 and fig. 3, and the test results are shown in table 1:
as can be seen from Table 1, the capacity retention rate of the single-crystal high-nickel ternary material prepared by the method of example 1 in the present example after being cycled for 450 times at the rate of 1C is superior to that of the experimental comparative example 1 in cycle performance, and through testing, the performance of the single-crystal high-nickel ternary material is remarkably improved by the method of example 1 in the present example, and the single-crystal high-nickel ternary material is very suitable for industrial scale-up production, as shown in FIG. 1, it can be seen that MgB prepared by the method of example 1 in the present example is very suitable for industrial scale-up production2The surface of the single crystal high nickel ternary material with the completely modified surface has a very compact and uniform surface modification layer, and the surface of the single crystal high nickel ternary material without the modification is very smooth and has no surface modification layer.
Claims (9)
1. A preparation method of a single crystal high nickel ternary material with a completely modified surface is characterized by comprising the following steps:
1) uniformly mixing the high-nickel ternary precursor and a lithium source according to the molar ratio of the lithium source to the high-nickel ternary precursor of 1.0-1.06 to obtain a mixture, wherein the mixing speed is 200 r/min-300 r/min, and the mixing time is 30 min-120 min;
2) calcining the mixture obtained in the step 1) in an oxygen atmosphere to obtain a single crystal high-nickel ternary matrix material, wherein the oxygen concentration in the oxygen atmosphere is higher than 99.9%, the calcining temperature and the calcining time are 450-480 ℃, and the temperature is kept for 5 hours, and 750-900 ℃ is kept for 15 hours;
3) crushing and sieving the base material obtained in the step 2) to obtain single crystal high nickel ternary material single crystal particles with uniformly dispersed particle sizes, wherein the sieving screen is 300-500 meshes, and the particle size of the crushed single crystal high nickel ternary material single crystal particles is 2-3.5 um;
4) dispersing the single crystal high nickel ternary material single crystal particles obtained in the step 3) in a medium containing Mx(NO3)yOr MxClyIs slowly stirred for 1 hour at room temperature under the condition of introducing inert gas, and then MBH with the concentration of 0.078M-0.1M is added4Slowly dripping the ethanol solution into the mixed solution at the dripping speed of 2-30 ml/min, slowly stirring for 2 hours after dripping is finished, filtering the mixed solution, and drying the obtained filter residue, wherein the single crystal high nickel ternary material and the M are mixedx(NO3)yOr MxClyThe mass ratio of the ethanol solution is 1: 10-50, Mx(NO3)yOr MxClyThe concentration of the ethanol solution is 0.009M-0.02M, MxByThe addition amount of the surface modification layer is 0.5-5% of the mass of the single crystal high nickel ternary material substrate, the stirring speed is 20-100 r/min, the stirring time is 1-3 h, the drying temperature is 80-120 ℃, and the drying time is 12 h;
5) calcining the filter residue obtained in the step 4) under the protection of inert gas to obtain the single crystal high nickel ternary material with the completely modified surface, wherein the calcining temperature and the calcining time are 500 ℃, the temperature is kept for 120 min, and the atmosphere is one or more of argon or nitrogen.
2. The method for preparing a single crystal high nickel ternary material with a completely modified surface according to claim 1, wherein the single crystal high nickel ternary precursor in step 1) is nickel-cobalt-manganese or nickel-cobalt-aluminum hydroxide with a molecular formula of NixCoyM1-x-y(OH)2Wherein x is 0.65-0.95, and y is 0.01-0.2.
3. The method for preparing the single-crystal high-nickel ternary material with completely modified surface according to claim 1, wherein the lithium source in the step 1) is one or more of lithium hydroxide or lithium carbonate.
4. The method for preparing the single crystal high nickel ternary material with the completely modified surface as claimed in claim 1, wherein M in the step 4) isx(NO3)yIs Mg (NO)3)2、Co(NO3)3、Mn(NO3)4、Fe(NO3)2、Al(NO3)3、Ca(NO3)2One or more of (a).
5. The method for preparing the single crystal high nickel ternary material with the completely modified surface as claimed in claim 1, wherein M in the step 4) isxClyIs TiCl4、MgCl2One or more of (a).
6. The method for preparing the single crystal high nickel ternary material with the completely modified surface as claimed in claim 1, wherein the MBH in the step 4)4Is one or more of sodium borohydride, potassium borohydride or lithium borohydride.
7. The method for preparing the single crystal high nickel ternary material with the completely modified surface as claimed in claim 1, wherein M in the step 4) isxByIs MgB2Or ZrB2Or CaB6Or TiB2Or CrB2Or AlB2Or Co2B, one or more of B.
8. The single crystal high nickel ternary material with the completely modified surface, which is prepared by the method for preparing the single crystal high nickel ternary material with the completely modified surface as described in any one of claims 1 to 7.
9. The use of the single crystal high nickel ternary material with a completely modified surface according to claim 8 in the anode material of a lithium ion battery.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111594661.8A CN114261996B (en) | 2021-12-24 | 2021-12-24 | Preparation method and application of single crystal high nickel ternary material with completely modified surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111594661.8A CN114261996B (en) | 2021-12-24 | 2021-12-24 | Preparation method and application of single crystal high nickel ternary material with completely modified surface |
Publications (2)
Publication Number | Publication Date |
---|---|
CN114261996A true CN114261996A (en) | 2022-04-01 |
CN114261996B CN114261996B (en) | 2023-09-22 |
Family
ID=80829436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202111594661.8A Active CN114261996B (en) | 2021-12-24 | 2021-12-24 | Preparation method and application of single crystal high nickel ternary material with completely modified surface |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN114261996B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114906878A (en) * | 2022-04-07 | 2022-08-16 | 浙江格派钴业新材料有限公司 | Preparation method of battery-grade cobalt hydroxide nanosheet |
CN115990497A (en) * | 2023-02-14 | 2023-04-21 | 广西师范大学 | CoPOx-Co 2 Preparation method of sodium borohydride hydrolysis catalyst |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016188477A2 (en) * | 2015-05-28 | 2016-12-01 | 清华大学深圳研究生院 | Carbon-coated ternary positive electrode material, preparation method therefor, and lithium ion battery |
CN110581269A (en) * | 2019-10-09 | 2019-12-17 | 济南大学 | Lithium phosphate coated lithium ion battery high-nickel single crystal ternary cathode material and preparation method thereof |
WO2020147671A1 (en) * | 2019-01-17 | 2020-07-23 | 浙江工业大学 | Method for modifying surface of high nickel ternary positive electrode material |
CN113540466A (en) * | 2021-07-20 | 2021-10-22 | 浙江帕瓦新能源股份有限公司 | Metal boride and borate composite coated modified nickel-cobalt-manganese ternary material precursor and preparation method thereof |
CN113629254A (en) * | 2021-10-12 | 2021-11-09 | 浙江帕瓦新能源股份有限公司 | Preparation method of single crystal high-nickel low-cobalt or cobalt-free cathode material |
-
2021
- 2021-12-24 CN CN202111594661.8A patent/CN114261996B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016188477A2 (en) * | 2015-05-28 | 2016-12-01 | 清华大学深圳研究生院 | Carbon-coated ternary positive electrode material, preparation method therefor, and lithium ion battery |
WO2020147671A1 (en) * | 2019-01-17 | 2020-07-23 | 浙江工业大学 | Method for modifying surface of high nickel ternary positive electrode material |
CN110581269A (en) * | 2019-10-09 | 2019-12-17 | 济南大学 | Lithium phosphate coated lithium ion battery high-nickel single crystal ternary cathode material and preparation method thereof |
CN113540466A (en) * | 2021-07-20 | 2021-10-22 | 浙江帕瓦新能源股份有限公司 | Metal boride and borate composite coated modified nickel-cobalt-manganese ternary material precursor and preparation method thereof |
CN113629254A (en) * | 2021-10-12 | 2021-11-09 | 浙江帕瓦新能源股份有限公司 | Preparation method of single crystal high-nickel low-cobalt or cobalt-free cathode material |
Non-Patent Citations (2)
Title |
---|
张晓辉;王红强;赖飞燕;吴强;李庆余;: "快离子导体La_(0.8)Sr_(0.2)MnO_3包覆LiMn_2O_4正极材料的结构和电化学性能", 材料保护, no. 10 * |
陈咏琳;刘笑之;黄雪;方振华;徐世国;王海波;: "高镍三元LiNi_(0.8)Co_(0.1)Mn_(0.1)O_2@Li_2ZrO_3正极材料的表面修饰与电化学性能优化", 电池工业, no. 06 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114906878A (en) * | 2022-04-07 | 2022-08-16 | 浙江格派钴业新材料有限公司 | Preparation method of battery-grade cobalt hydroxide nanosheet |
CN115990497A (en) * | 2023-02-14 | 2023-04-21 | 广西师范大学 | CoPOx-Co 2 Preparation method of sodium borohydride hydrolysis catalyst |
Also Published As
Publication number | Publication date |
---|---|
CN114261996B (en) | 2023-09-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110233250B (en) | Preparation method of single crystal particle ternary cathode material | |
CN107359334B (en) | Spherical or sphere-like lithium ion battery anode material and lithium ion battery | |
EP3557668A1 (en) | Ternary material and preparation method therefor, battery slurry, positive electrode, and lithium battery | |
CN112670506B (en) | Nickel-cobalt-manganese-tantalum composite quaternary positive electrode material coated by fast ion conductor and preparation method thereof | |
CN112531158B (en) | High-nickel ternary single crystal material and preparation method thereof | |
CN114261996B (en) | Preparation method and application of single crystal high nickel ternary material with completely modified surface | |
CN107579237B (en) | Preparation method of ternary cathode material and ternary cathode material | |
CN114256456B (en) | High-voltage positive electrode material and battery containing same | |
WO2023071409A1 (en) | Single-crystal ternary positive electrode material, preparation method therefor, and application thereof | |
CN112349885B (en) | Modified lithium ion battery positive electrode material and preparation method thereof | |
CN113603154A (en) | High-voltage nickel-cobalt-manganese ternary precursor and preparation method thereof | |
CN111180724A (en) | Preparation method of ternary single crystal cathode material | |
CN114267841B (en) | Preparation method and application of surface-fully-coated high-nickel single crystal ternary material | |
WO2024040829A1 (en) | Positive electrode active material, battery and preparation method therefor | |
CN115504524A (en) | Single crystal high nickel material and preparation method and application thereof | |
CN113113594B (en) | Doped large-particle nickel cobalt lithium manganate and preparation method and application thereof | |
TWI550938B (en) | Cathode material of lithium ion battery and method for making the same | |
CN116495802B (en) | Preparation method and application of sodium ion battery anode material | |
CN113422039A (en) | Ternary composite oxide matrix material, ternary positive electrode material, preparation method and lithium ion battery prepared from ternary composite oxide matrix material and ternary positive electrode material | |
WO2014071724A1 (en) | Lithium-rich anode material, lithium battery anode, and lithium battery | |
CN110683589B (en) | Preparation method of cobaltosic oxide nano material | |
CN116706050A (en) | Medium-low nickel monocrystal ternary positive electrode material, preparation method thereof and battery | |
CN116750810A (en) | Single-crystal type high-nickel ternary positive electrode material for high-voltage lithium ion battery and preparation method thereof | |
CN114583126B (en) | La (La) 2 O 3 Co/AB composite material and preparation method and application thereof | |
CN116014103A (en) | High-nickel ternary positive electrode material and preparation method and application thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |