CN112678879A - Preparation method of single crystal ternary cathode material - Google Patents
Preparation method of single crystal ternary cathode material Download PDFInfo
- Publication number
- CN112678879A CN112678879A CN202011539829.0A CN202011539829A CN112678879A CN 112678879 A CN112678879 A CN 112678879A CN 202011539829 A CN202011539829 A CN 202011539829A CN 112678879 A CN112678879 A CN 112678879A
- Authority
- CN
- China
- Prior art keywords
- cathode material
- single crystal
- ternary cathode
- sintering
- oxygen
- 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.)
- Pending
Links
- 239000013078 crystal Substances 0.000 title claims abstract description 29
- 239000010406 cathode material Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000005245 sintering Methods 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 16
- 239000001301 oxygen Substances 0.000 claims abstract description 16
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 13
- 239000010941 cobalt Substances 0.000 claims abstract description 13
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 13
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910001947 lithium oxide Inorganic materials 0.000 claims abstract description 13
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 13
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000007873 sieving Methods 0.000 claims abstract description 6
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Chemical group [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000011572 manganese Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- 238000010923 batch production Methods 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 238000003746 solid phase reaction Methods 0.000 claims description 3
- 229910006806 Li1+xNiaCobMncO2 Inorganic materials 0.000 claims 1
- 238000000498 ball milling Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000005303 weighing Methods 0.000 description 4
- 239000002243 precursor Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000010405 anode material Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- -1 nickel-cobalt-manganese metal compound Chemical class 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 239000012798 spherical particle Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910016739 Ni0.5Co0.2Mn0.3(OH)2 Inorganic materials 0.000 description 1
- HFCVPDYCRZVZDF-UHFFFAOYSA-N [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O Chemical compound [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O HFCVPDYCRZVZDF-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention provides a preparation method of a single crystal ternary cathode material, which is characterized in that the chemical expression of the single crystal material is as follows: li1+ xNiCobMncO 2 (where 0< a <1, 0< b <1, 0< c <1, a + b + c ═ 1, 0 ≦ x ≦ 1) comprising the steps of: s1) mixing and dispersing lithium oxide powder, nickel, cobalt and manganese metal elementary powder and fluxing agent according to the proportion; s2) carrying out primary sintering on the uniformly dispersed material under an oxygen-containing atmosphere and a first temperature curve; s3) carrying out secondary sintering on the product after the primary sintering under an oxygen-containing atmosphere and a second temperature curve; s4) finally, naturally cooling the material after the second sintering to room temperature, crushing and sieving to obtain the target product. The single crystal ternary material prepared by the method can obtain high capacity and long cycle characteristics under high voltage, simultaneously remarkably improves the rate capability of the battery, greatly reduces the production cost and has wide industrial application value.
Description
The technical field is as follows:
the invention relates to the technical field of lithium ion batteries, in particular to a preparation method of a lithium single crystal ternary cathode material.
Background art:
the ternary anode material of the lithium ion battery is widely applied due to the advantages of large capacity, high rate capability, good safety performance, low price and the like. However, the traditional nickel cobalt lithium manganate ternary positive electrode material is generally spherical or quasi-spherical secondary particles formed by gathering nano-scale primary small particles, and the secondary spherical particles are easy to break due to low mechanical strength of the particles, so that in the cyclic charge and discharge process of high temperature and high pressure, the secondary spherical particle ternary positive electrode material has increased surface side reactions and aggravated dissolution of metal ions, thereby causing the problems of capacity reduction, poor cycle performance, gas expansion and the like. Therefore, the single crystal material is generated at the same time, the stability of the anode material is enhanced, and the voltage of the whole system can be increased to a new height. The preparation method of the related single crystal ternary material at present generally comprises the following steps: firstly, a ternary precursor is prepared from a nickel-cobalt-manganese metal compound by adopting a coprecipitation method, and then a lithium source is added for roasting to obtain a ternary cathode material.
The invention content is as follows:
in order to overcome the defects of the prior art, the invention aims to provide a preparation method of a single crystal ternary cathode material, which directly utilizes lithium oxide powder, nickel, cobalt and manganese metal elementary powder and a fluxing agent as raw materials, ensures the uniformity of mixing of all elements, reduces the cost of the raw materials, reduces the firing temperature and the energy consumption, has the advantages of low processing and manufacturing cost and low residual lithium on the surface of a product, and can prepare the single crystal ternary cathode material with higher initial capacity, high rate capability and good cycle retention rate.
In order to achieve the purpose, the invention adopts the technical scheme that: a preparation method of a single crystal ternary cathode material comprises the following steps:
s1) mixing and dispersing lithium oxide powder, nickel, cobalt and manganese metal elementary powder and fluxing agent according to the proportion;
s2) carrying out primary sintering on the uniformly dispersed material under an oxygen-containing atmosphere and a first temperature curve;
s3) carrying out secondary sintering on the product after the primary sintering under an oxygen-containing atmosphere and a second temperature curve;
s4) finally, naturally cooling the material after the second sintering to room temperature, crushing and sieving to obtain the target product.
In one or more embodiments, in step S1), the lithium source is lithium oxide, the nickel, cobalt, and manganese sources are elemental nickel, cobalt, and manganese metals, and the fluxing agent is strontium oxide.
In one or more embodiments, Li in step S1): ni: co: the molar ratio of Mn is (1.02-1.12): (0-0.95): (0-0.25): (0-0.35), wherein the mass of the fluxing agent is 0.2-2 wt% of the total mass of the lithium oxide and the single-substance powder of the nickel, cobalt and manganese.
In one or more embodiments, the mixing manner in step S1) includes a ball mill mixer, a drum mixer, a high speed mixer, a conical mixer, a ribbon mixer, a coulter mixer, etc., depending on the mixing amount; the preparation method is preferably a planetary ball mill during small-batch preparation, preferably a high-speed mixer during medium-batch production, and preferably a coulter mixer during batch production.
In one or more embodiments, the oxygen-containing atmosphere in steps S2), S3) includes at least one of an air mode and a high purity oxygen mode (oxygen concentration ≧ 95%), and when the two are mixed, the mixing ratio is arbitrary.
In one or more embodiments, the first temperature profile in the step S2) is a pre-sintering profile, and the pre-sintering is performed in an oxygen-containing atmosphere, and the temperature is increased from room temperature to 350-600 ℃ at a temperature increase rate of 0.5-10 ℃/min, and the temperature is maintained for 1-12 hours.
In one or more embodiments, the second temperature profile in step S3) is a solid phase reaction stage, and the reaction is performed in an oxygen-containing atmosphere, and the temperature is raised to 650 to 980 ℃ at a temperature rise rate of 0.5 to 10 ℃/min, and the temperature is maintained for 8 to 24 hours.
In one or more embodiments, the target product in step S4) is a single crystal ternary cathode material, and is typically characterized in that the morphology is composed of spherical or spheroidal primary single crystal particles (or contains a small amount of secondary agglomerated particles), the morphology is uniform, and the size is regular.
The invention has the following advantages:
the invention provides a preparation method of a single crystal ternary cathode material, wherein the raw materials directly adopt lithium oxide powder, nickel, cobalt and manganese metal elementary powder and fluxing agent, and the preparation process of a precursor is omitted, so that the production cost is greatly reduced, and the preparation method is more green and environment-friendly; the phenomenon of generating water vapor or carbon dioxide when metal hydroxide or metal carbonate is used as a raw material is avoided, so that the consistency of atmosphere, the stability of solid-phase reaction and the inhibition of structural cracking are greatly improved; lithium oxide powder, nickel, cobalt and manganese metal simple substance powder and fluxing agent are directly mixed, so that the mixing uniformity of all elements is ensured. Meanwhile, the single crystal multi-element material prepared by the method has high capacity and long cycle characteristics under high voltage, the rate performance of the battery is obviously improved, the production cost is greatly reduced, and the industrial application value is wide.
Description of the drawings:
FIG. 1 is provided to provide a further understanding of the present invention and forms a part of the specification and is used to explain the present invention together with the embodiments of the present invention.
The specific implementation mode is as follows:
the following examples are included to further illustrate the present invention by way of example in the preparation of NCM 523.
Example one
A preparation method of a single crystal ternary cathode material comprises the following steps:
lithium oxide and nickel, cobalt and manganese metal simple substance powder are mixed according to the mol ratio of (1.02-1.12): 0.5: 0.2: weighing 0.3, weighing 0.2-2 wt% of strontium oxide, adding the strontium oxide into a high-speed mixer, mixing for 15-30 min at the mixing frequency of 20-60 Hz, sintering the uniformly mixed materials in an air atmosphere, heating the materials from room temperature to 450 ℃ at the heating rate of 5-10 ℃/min, and preserving the heat for 1-12 hours. And continuously heating to 925 ℃ at the heating rate of 5-10 ℃/min, and preserving the heat for 8-24 hours. And finally, naturally cooling the sintered material to room temperature, taking out the powder, crushing, and sieving with a 150-400-mesh sieve to obtain the sample 1 in the embodiment.
Example two
A preparation method of a single crystal ternary cathode material comprises the following steps:
lithium oxide and nickel, cobalt and manganese metal simple substance powder are mixed according to the mol ratio of (1.02-1.12): 0.5: 0.2: weighing 0.3, weighing 0.2-2 wt% of strontium oxide, adding the strontium oxide into a colter mixer, mixing for 15-60 min, sintering the uniformly mixed materials for the first time under the air atmosphere condition, heating the materials from room temperature to 400 ℃ at the heating rate of 5-10 ℃/min, and preserving the heat for 1-12 hours. And continuously heating to 920 ℃ at the heating rate of 5-10 ℃/min, and preserving the heat for 8-24 hours. And finally, naturally cooling the sintered material to room temperature, taking out the powder, crushing, and sieving with a 150-400-mesh sieve to obtain the sample 2 of the embodiment.
Comparative example 1
The ternary precursor Ni0.5Co0.2Mn0.3(OH)2And lithium carbonate according to a molar ratio of 1: (1.02-1.12), adding the mixture into a high-speed mixer, and fully mixing, wherein the mixing frequency is 20-60 Hz, and the mixing time is 15-30 min, so as to obtain a raw material mixture;
sintering the mixed materials in an air atmosphere, heating the mixed materials from room temperature to 400 ℃, and preserving heat for 1-12 hours; and then heating to 920 ℃, preserving the heat for 8-24 hours, naturally cooling to room temperature, taking out the powder, crushing, and sieving with a 150-400-mesh sieve to obtain a comparative sample.
2025 power-on manufacturing test is carried out on the samples 1 and 2 of the above embodiment and the sample of the comparative example, wherein the test voltage condition (3.0-4.3) V and the multiplying power performance test condition are as follows: 0.2C, 0.5C, 1C, 2C, 5C charge and discharge for two circles respectively, and the multiplying power performance calculation method comprises the following steps: 5C discharge capacity/0.2C discharge capacity.
The first table shows the discharge efficiency, rate capability and cycle performance data of 0.2C for the ternary samples of example 1, example 2 and comparative example 1.
First-release efficiency, rate capability and cycle capability at 0.2C for the samples of Table I, comparative example and example
The result shows that the single crystal ternary cathode material prepared by directly using the lithium oxide powder, the nickel, cobalt and manganese metal elementary powder and the fluxing agent as raw materials has the advantages that the electrical property first discharge efficiency is improved compared with that of the single crystal ternary cathode material prepared by the conventional method, the rate capability is obviously improved, and the cycle performance is also obviously improved.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. Modifications and variations that may occur to those skilled in the art without departing from the spirit and scope of the invention are to be considered as within the scope of the invention.
Claims (6)
1. A preparation method of a single crystal ternary cathode material is characterized in that the chemical expression of the single crystal material is as follows: li1+ xNiaCobMncO2(wherein 0)<a<1，0<b<1，0<c<1, a + b + c is 1, 0 ≦ x ≦ 1), comprising the steps of:
s1) mixing and dispersing lithium oxide powder, nickel, cobalt and manganese metal elementary powder and fluxing agent according to the proportion;
s2) carrying out primary sintering on the uniformly dispersed material under an oxygen-containing atmosphere and a first temperature curve;
s3) carrying out secondary sintering on the product after the primary sintering under an oxygen-containing atmosphere and a second temperature curve;
s4) finally, naturally cooling the material after the second sintering to room temperature, crushing and sieving to obtain the target product.
2. The method for preparing a single-crystal ternary cathode material according to claim 1, wherein: in the step S1), the lithium source is lithium oxide, and the fluxing agent is strontium oxide;
li: ni: co: the molar ratio of Mn is (1.02-1.12): (0-0.95): (0-0.25): (0-0.35), wherein the mass of the fluxing agent is 0.2-2 wt% of the total mass of the lithium oxide and the single-substance powder of the nickel, cobalt and manganese.
3. The method for preparing a single-crystal ternary cathode material according to claim 1, wherein: the mixing mode in the step S1) comprises a ball milling mixer, a drum mixer, a high-speed mixer, a conical mixer, a spiral belt mixer and a coulter mixer, and is determined according to the mixing quantity;
the preparation method is preferably a planetary ball mill during small-batch preparation, preferably a high-speed mixer during medium-batch production, and preferably a coulter mixer during batch production.
4. The method for preparing a single-crystal ternary cathode material according to claim 1, wherein: the oxygen-containing atmosphere in the step S2) or S3) includes at least one of an air mode and a high purity oxygen mode (oxygen concentration is not less than 95%); when the two are mixed, the mixing ratio is an arbitrary ratio.
5. The method for preparing a single-crystal ternary cathode material according to claim 1, wherein: the first temperature curve in the step S2) is a pre-sintering stage curve, the pre-sintering is carried out in the oxygen-containing atmosphere, the temperature is increased from room temperature to 350-600 ℃ at the temperature increasing rate of 0.5-10 ℃/min, and the temperature is kept for 1-12 hours;
and the second temperature curve is a solid-phase reaction stage curve, is carried out in the oxygen-containing atmosphere, is heated to 650-980 ℃ at a heating rate of 0.5-10 ℃/min, and is kept for 8-24 hours.
6. The method for preparing a single-crystal ternary cathode material according to claim 1, wherein: the target product in the step S4) is the single crystal ternary cathode material, and is typically characterized in that the morphology of the single crystal ternary cathode material is composed of spherical or spheroidal primary single crystal particles or contains a small amount of secondary agglomerated particles, the morphology is uniform, and the size is regular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011539829.0A CN112678879A (en) | 2020-12-23 | 2020-12-23 | Preparation method of single crystal ternary cathode material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011539829.0A CN112678879A (en) | 2020-12-23 | 2020-12-23 | Preparation method of single crystal ternary cathode material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112678879A true CN112678879A (en) | 2021-04-20 |
Family
ID=75451177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011539829.0A Pending CN112678879A (en) | 2020-12-23 | 2020-12-23 | Preparation method of single crystal ternary cathode material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112678879A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113249777A (en) * | 2021-04-23 | 2021-08-13 | 陕西彩虹新材料有限公司 | Nanoscale single crystal ternary cathode material precursor, single crystal ternary cathode material and preparation method |
| CN114408986A (en) * | 2022-01-21 | 2022-04-29 | 陕西彩虹新材料有限公司 | Nanoscale single crystal ternary cathode material and preparation method thereof |
| CN114665090A (en) * | 2022-04-11 | 2022-06-24 | 中南大学 | Method for preparing large-particle-size single crystal ternary cathode material at low temperature in one step |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014067508A (en) * | 2012-09-25 | 2014-04-17 | Nichia Chem Ind Ltd | Positive electrode active material for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery using the same, and method for manufacturing positive electrode active material for nonaqueous electrolyte secondary battery |
| CN108306014A (en) * | 2017-12-26 | 2018-07-20 | 深圳市德方纳米科技股份有限公司 | A kind of monocrystalline nickel-cobalt lithium manganate cathode material and its preparation method and application |
| CN109279659A (en) * | 2018-08-22 | 2019-01-29 | 中伟新材料有限公司 | A kind of monocrystalline tertiary cathode material preparation method |
| CN109778301A (en) * | 2019-01-03 | 2019-05-21 | 北京工业大学 | The preparation of one type monocrystalline lithium-rich oxide material and application |
| CN110867580A (en) * | 2019-11-22 | 2020-03-06 | 四川新锂想能源科技有限责任公司 | Method for preparing nickel cobalt lithium manganate single crystal positive electrode material by strontium doping |
| CN111058084A (en) * | 2019-12-25 | 2020-04-24 | 湖北融通高科先进材料有限公司 | Method for preparing nickel cobalt lithium manganate single crystal ternary material |
| US20210367233A1 (en) * | 2018-08-28 | 2021-11-25 | Byd Company Limited | Ternary positive electrode material and preparation method therefor, and lithium-ion battery |
-
2020
- 2020-12-23 CN CN202011539829.0A patent/CN112678879A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014067508A (en) * | 2012-09-25 | 2014-04-17 | Nichia Chem Ind Ltd | Positive electrode active material for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery using the same, and method for manufacturing positive electrode active material for nonaqueous electrolyte secondary battery |
| CN108306014A (en) * | 2017-12-26 | 2018-07-20 | 深圳市德方纳米科技股份有限公司 | A kind of monocrystalline nickel-cobalt lithium manganate cathode material and its preparation method and application |
| CN109279659A (en) * | 2018-08-22 | 2019-01-29 | 中伟新材料有限公司 | A kind of monocrystalline tertiary cathode material preparation method |
| US20210367233A1 (en) * | 2018-08-28 | 2021-11-25 | Byd Company Limited | Ternary positive electrode material and preparation method therefor, and lithium-ion battery |
| CN109778301A (en) * | 2019-01-03 | 2019-05-21 | 北京工业大学 | The preparation of one type monocrystalline lithium-rich oxide material and application |
| CN110867580A (en) * | 2019-11-22 | 2020-03-06 | 四川新锂想能源科技有限责任公司 | Method for preparing nickel cobalt lithium manganate single crystal positive electrode material by strontium doping |
| CN111058084A (en) * | 2019-12-25 | 2020-04-24 | 湖北融通高科先进材料有限公司 | Method for preparing nickel cobalt lithium manganate single crystal ternary material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113249777A (en) * | 2021-04-23 | 2021-08-13 | 陕西彩虹新材料有限公司 | Nanoscale single crystal ternary cathode material precursor, single crystal ternary cathode material and preparation method |
| CN114408986A (en) * | 2022-01-21 | 2022-04-29 | 陕西彩虹新材料有限公司 | Nanoscale single crystal ternary cathode material and preparation method thereof |
| CN114408986B (en) * | 2022-01-21 | 2024-02-13 | 陕西彩虹新材料有限公司 | Nanoscale monocrystal ternary cathode material and preparation method thereof |
| CN114665090A (en) * | 2022-04-11 | 2022-06-24 | 中南大学 | Method for preparing large-particle-size single crystal ternary cathode material at low temperature in one step |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107359334B (en) | Spherical or sphere-like lithium ion battery anode material and lithium ion battery | |
| CN112678879A (en) | Preparation method of single crystal ternary cathode material | |
| CN112531158B (en) | High-nickel ternary single crystal material and preparation method thereof | |
| CN114447297B (en) | Nickel cobalt lithium manganate high-nickel monocrystal positive electrode material and preparation method thereof | |
| CN114243014A (en) | Single crystal ternary cathode material and preparation method and application thereof | |
| CN112382738A (en) | Preparation method of high-performance lithium-rich single crystal multi-element cathode material | |
| CN114447309B (en) | Sodium ion doped lithium ion battery positive electrode material and preparation method thereof | |
| CN115084506B (en) | Large-particle-size monocrystal ternary positive electrode material, and preparation method and application thereof | |
| CN110699744A (en) | Single crystal ternary positive electrode material containing trace elements | |
| CN115386946A (en) | Preparation method of long-cycle high-nickel single crystal positive electrode material | |
| CN112993236A (en) | Single-particle lithium manganate cathode material and preparation method thereof | |
| CN113249777A (en) | Nanoscale single crystal ternary cathode material precursor, single crystal ternary cathode material and preparation method | |
| CN114645314B (en) | Preparation method of ternary positive electrode material with single crystal morphology | |
| CN114361441A (en) | Preparation method of in-situ coated single crystal high-nickel ternary cathode material | |
| CN110350162B (en) | Multiplying power type nickel-cobalt-aluminum positive electrode material and preparation method and application thereof | |
| CN117133906A (en) | Coated oxygen-site doped modified sodium ion battery positive electrode material and preparation method thereof | |
| CN114927659A (en) | Multi-element anode material and preparation method and application thereof | |
| CN113582254B (en) | Layered positive electrode material and preparation method and application thereof | |
| US20050152831A1 (en) | Lithium-containing complex oxide and method of producing same | |
| CN117936748A (en) | O3 type nickel-iron-manganese-based sodium electrode material and preparation method thereof | |
| CN114156448A (en) | Layered high-nickel NCA single crystal type ternary positive electrode material and preparation method thereof | |
| CN103413928B (en) | High-capacity high-compaction metal oxide anode material and preparation method thereof | |
| CN117088422A (en) | High-nickel ternary positive electrode material synthesized by taking lithium carbonate as main lithium source and preparation method thereof | |
| CN111370682A (en) | Lithium ion battery anode material precursor, anode material and preparation method | |
| JP3267667B2 (en) | Method for producing positive electrode for lithium secondary battery |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210420 |