CN112133905B - High-nickel ternary precursor and preparation method thereof - Google Patents
High-nickel ternary precursor and preparation method thereof Download PDFInfo
- Publication number
- CN112133905B CN112133905B CN202011014897.5A CN202011014897A CN112133905B CN 112133905 B CN112133905 B CN 112133905B CN 202011014897 A CN202011014897 A CN 202011014897A CN 112133905 B CN112133905 B CN 112133905B
- Authority
- CN
- China
- Prior art keywords
- nickel
- ternary precursor
- acid
- concentration
- equal
- 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.)
- Active
Links
Images
Classifications
-
- 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
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
-
- 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
-
- 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
- H01M4/362—Composites
- H01M4/366—Composites as layered products
-
- 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
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
-
- 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
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a high-nickel ternary precursor and a preparation method thereof, wherein the preparation method comprises the following steps of 1) mixing soluble nickel salt, cobalt salt and manganese salt according to Nix+aCoyMnzDissolving and mixing according to a molar ratio; 2) under the conditions of nitrogen protection and stirring starting, adding a nickel-cobalt-manganese mixed salt solution, a precipitator and a complexing agent into a reaction kettle for coprecipitation reaction, and regulating the ammonia concentration and the pH value in the reaction process by controlling the flow of the complexing agent and the precipitator; detecting the granularity of the slurry in real time, and stirring and aging after the granularity reaches a target; 3) transferring to a washing machine, filtering the slurry, washing with pure water, and adding acid for soaking; controlling the concentration of acid and the acid leaching time to control the Ni at the outer layer of the leaching2+The content of (A); then carrying out alkali washing, water washing and drying to obtain the catalyst. The invention can rapidly process the ternary precursor into the core-shell structure, has simple and convenient operation, can be suitable for continuous production, improves the efficiency and has good consistency of the core-shell effect of the particles.
Description
Technical Field
The invention relates to the field of lithium ion battery anode materials, in particular to a high-nickel ternary precursor and a preparation method thereof.
Background
In the lithium ion battery anode material, the nickel-cobalt-manganese ternary material has the advantages of high energy density, high discharge specific capacity, no memory effect, low cost and the like due to the synergistic effect of three elements, namely Ni, Co and Mn, and is considered as the anode material with the greatest development prospect. The high-nickel ternary precursor material is an important raw material of a high-nickel ternary cathode material and has a crucial influence on the performance of the cathode material. At present, due to the pursuit of new energy automobiles for high endurance mileage, the requirement of higher capacity is also put forward for power batteries. At present, the high-nickel ternary material is developed to meet the requirement of high capacity mainly by improving the content of nickel element in the anode material of the lithium ion power battery. However, the higher the nickel content, the more unstable, and the more likely cation-mixed, resulting in lower material cyclability and poor stability.
In order to solve the problems of low cyclicity and poor stability of the high-nickel ternary material, the prior art mainly adopts a core-shell structure design for a precursor, and synthesizes the precursor material with an inner core and a nickel-rich shell and low nickel step by step, so that the content of nickel element on the outer layer of the anode material is reduced, and the stability is improved.
For example, the Chinese patent application with application number 201911128216.5 discloses a high-nickel-concentration gradient lithium battery ternary precursor, a preparation method and application thereof, and mainly two different kinds of Ni are prepared2+Sulfate mixed solution of molar concentration, using Ni successively2+The high and low molar concentrations of the sulfate salt mix solutions to produce the core and shell of the precursor material, respectively.
Although the technical scheme can achieve a certain core-shell effect, two different kinds of Ni need to be prepared, replaced and used in the synthesis process2+The mixed salt solution with the molar concentration increases the equipment cost, the process switching is complex, the continuous production is not available, and the mixed solution of the two sulfates is used for stepwise synthesis, so that the condition that all the particles are difficult to ensure is difficultThe particles are all of core-shell structures, the consistency of precursor particles is poor, the content of the nickel element in the whole material is reduced, and the adverse effect on the capacity is generated.
Disclosure of Invention
In view of the above, in order to solve the above technical problems, the present invention aims to provide a high-nickel ternary precursor and a preparation method thereof, and the technical scheme of the present invention can rapidly process the ternary precursor into a core-shell structure, is simple and convenient to operate, is applicable to continuous production, improves efficiency, has good consistency of particle core-shell effect, and can significantly improve cycle performance and stability of a high-nickel ternary precursor material.
The adopted technical scheme is as follows:
the invention relates to a preparation method of a high-nickel ternary precursor, which comprises the following steps:
(1) mixing soluble nickel salt, cobalt salt and manganese salt with Nix+aCoyMnzDissolving and mixing in a molar ratio of x being more than or equal to 0.6 and less than or equal to 0.95, a being more than or equal to 0 and less than or equal to 0.2, and x + y + z + a being 1, wherein the molar concentration of total metals is controlled to be 1.5-2.0 mol/L;
(2) under the conditions of nitrogen protection and stirring start, adding a nickel-cobalt-manganese mixed salt solution, a precipitator solution and a complexing agent solution into a reaction kettle for coprecipitation reaction, controlling the temperature in the reaction kettle to be 40-70 ℃, and regulating the ammonia concentration to be 5-15g/L and the pH value to be 10-13 in the reaction process by controlling the flow of the complexing agent solution and the precipitator solution; detecting the granularity of the slurry in the reaction kettle in real time, and stirring and aging when the median granularity is stabilized at 5-15 mu m;
(3) after the aging is finished, transferring the slurry into a washing machine, filtering the slurry, washing the slurry by pure water, adding 0.5-6.0mol/L acid, soaking for 0.5-5h, and stirring properly in the process; controlling the concentration of acid and the acid leaching time to control the Ni at the outer layer of the leaching2+The content of (A); and after soaking, performing alkali washing, water washing and drying to obtain the high-nickel ternary precursor material with nickel-rich inner core and low-nickel and high-manganese outer shell.
Preferably, in the step (2), the precipitant solution is sodium hydroxide solution with the concentration of 6-10 mol/L.
Preferably, in the step (2), the complexing agent solution is ammonia water, and the concentration is 15-25 g/L.
Preferably, in the step (3), the acid is one or more of hydrochloric acid, sulfuric acid and nitric acid, and the concentration is 0.5-6.0 mol/L.
Preferably, in the step (3), the Ni at the outer layer of the leaching is controlled by controlling the concentration of the acid and the acid leaching time2+The contents of (a) are shown in the following table 1:
TABLE 1
The high-nickel ternary precursor is prepared by the preparation method in any scheme.
Further, the molar ratio of elements of the prepared high-nickel ternary precursor is NixCoy+mMnz+nWherein x is more than or equal to 0.6 and less than or equal to 0.95, a is more than or equal to 0 and less than or equal to 0.2, x + y + z + m + n is 1, and m + n is a.
The invention has the beneficial effects that:
firstly, preparing Ni2+Synthesizing a high-nickel ternary precursor by using a mixed salt solution with the content higher than the target, and then selectively leaching Ni in the outer layer of the precursor material by using acid leaching in a post-treatment washing stage2+The effects of rich nickel in the kernel and low nickel in the shell are achieved, Ni2+The leaching amount is used for reducing the whole nickel element content of the material to a target value, so that the capacity of the material is not influenced, and the cycle performance and stability can be improved. The acid leaching step is alternated with the precursor washing stage, the operation is simple and convenient, the method is suitable for continuous production, the efficiency is improved, the consistency of the core-shell effect of the particles is good, and the cycle performance and the stability of the high-nickel ternary precursor material can be obviously improved.
Drawings
The following brief description of the drawings is provided:
fig. 1 is an electron microscope scan of the high nickel ternary precursor prepared in example 1.
Detailed Description
The present invention is described in detail below with reference to specific examples, but the use and purpose of these exemplary embodiments are merely to exemplify the present invention, and do not set forth any limitation on the actual scope of the present invention in any form, and the scope of the present invention is not limited thereto.
Example 1
A preparation method of a high-nickel ternary precursor comprises the following steps:
s1, mixing the raw materials of Ni source, Co source and Mn source in Ni-Co-Mn precursor according to a fixed proportion0.84Co0.12Mn0.04Dissolving, wherein the total metal molar concentration of the solution is controlled to be 2 mol/L;
and S2, uniformly pumping the mixed salt solution, the sodium hydroxide solution and the ammonia water solution into a reaction kettle through a metering system for wet coprecipitation, controlling the temperature of the reaction kettle at 60 ℃, and continuously introducing nitrogen for protection in the process. Controlling the pH value of a reaction system to be 11.2 by adjusting the flow rates of sodium hydroxide and ammonia water in the reaction process, controlling the concentration of the ammonia water to be 10g/L, starting to collect materials when the median particle size of slurry in a reaction kettle is stabilized to be 9.5-10.5 mu m, aging, and transferring the slurry to a washing machine for washing;
s3, the slurry was transferred to a washer, and then filtered first, and then washed once with pure water. After washing, 2mol/L hydrochloric acid is added, the cake is not filtered, the stirring is properly carried out in the process, and the filter cake is broken up. After soaking for 1h, filtering. Then alkali washing and water washing are carried out, and finally drying and screening are carried out to obtain the high-nickel ternary precursor material with rich nickel in the core and low nickel and high manganese in the shell, wherein the element proportion is Ni0.82Co0.12Mn0.06. See electron microscope scan (5000x) of the high nickel ternary precursor shown in figure 1. After sintering into the positive electrode material, the electrochemical performance was tested, and the capacity retention rate after 50 cycles was 97%, see table 2.
Comparative example 1
A preparation method of a high-nickel ternary precursor comprises the following steps:
s1, mixing the raw materials of Ni source, Co source and Mn source in Ni-Co-Mn precursor according to a fixed proportion0.82Co0.12Mn0.06Dissolving, wherein the total metal molar concentration of the solution is controlled to be 2 mol/L;
and S2, uniformly pumping the mixed salt solution, the sodium hydroxide solution and the ammonia water solution into a reaction kettle through a metering system for wet coprecipitation, controlling the temperature of the reaction kettle at 60 ℃, and continuously introducing nitrogen for protection in the process. Controlling the pH value of a reaction system to be 11.2 by adjusting the flow rates of sodium hydroxide and ammonia water in the reaction process, controlling the concentration of the ammonia water to be 10g/L, starting to collect materials when the median particle size of slurry in a reaction kettle is stabilized to be 9.5-10.5 mu m, aging, and transferring the slurry to a washing machine for washing;
s3, transferring the slurry to a washing machine, filtering, washing with alkali and water, drying, and sieving to obtain a ternary precursor material with the element proportion of Ni0.82Co0.12Mn0.06. After sintering into the positive electrode material, the electrochemical performance was tested, and the capacity retention rate after 50 cycles was 82%, see table 2:
TABLE 2
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (7)
1. A preparation method of a high-nickel ternary precursor is characterized by comprising the following steps:
(1) dissolving soluble nickel salt, cobalt salt andmanganese salt Nix+aCoyMnzDissolving and mixing in a molar ratio of x being more than or equal to 0.6 and less than or equal to 0.95, a being more than or equal to 0 and less than or equal to 0.2, and x + y + z + a being 1, wherein the molar concentration of total metals is controlled to be 1.5-2.0 mol/L;
(2) under the conditions of nitrogen protection and stirring start, adding a nickel-cobalt-manganese mixed salt solution, a precipitator solution and a complexing agent solution into a reaction kettle for coprecipitation reaction, controlling the temperature in the reaction kettle to be 40-70 ℃, and regulating the ammonia concentration to be 5-15g/L and the pH value to be 10-13 in the reaction process by controlling the flow of the complexing agent solution and the precipitator solution; detecting the granularity of the slurry in the reaction kettle in real time, and stirring and aging when the median granularity is stabilized at 5-15 mu m;
(3) after the aging is finished, transferring the slurry into a washing machine, filtering the slurry, washing the slurry by pure water, adding 0.5-6.0mol/L acid, soaking for 0.5-5h, and stirring properly in the process; controlling the concentration of acid and the acid leaching time to control the Ni at the outer layer of the leaching2+The content of (A); and after soaking, performing alkali washing, water washing and drying to obtain the high-nickel ternary precursor material with nickel-rich inner core and low-nickel and high-manganese outer shell.
2. The method for preparing the high-nickel ternary precursor according to claim 1, wherein in the step (2), the precipitant solution is a sodium hydroxide solution with a concentration of 6-10 mol/L.
3. The method for preparing the high-nickel ternary precursor according to claim 1, wherein in the step (2), the complexing agent solution is ammonia water with a concentration of 15-25 g/L.
4. The method for preparing the high-nickel ternary precursor according to claim 1, wherein in the step (3), the acid is one or more of hydrochloric acid, sulfuric acid and nitric acid, and the concentration is 0.5-6.0 mol/L.
5. The method for preparing the high-nickel ternary precursor as claimed in claim 1, wherein in the step (3), the Ni at the outer layer of the leached layer is controlled by controlling the concentration of the acid and the acid leaching time2+The contents of (A) are as follows:
6. a long high nickel ternary precursor, characterized in that it is prepared by the preparation method of any one of claims 1 to 5.
7. The high-nickel ternary precursor according to claim 6, wherein the molar ratio of elements of the prepared high-nickel ternary precursor is NixCoy+mMnz+nWherein x is more than or equal to 0.6 and less than or equal to 0.95, a is more than or equal to 0 and less than or equal to 0.2, x + y + z + m + n is 1, and m + n is a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011014897.5A CN112133905B (en) | 2020-09-24 | 2020-09-24 | High-nickel ternary precursor and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011014897.5A CN112133905B (en) | 2020-09-24 | 2020-09-24 | High-nickel ternary precursor and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112133905A CN112133905A (en) | 2020-12-25 |
| CN112133905B true CN112133905B (en) | 2021-12-17 |
Family
ID=73839329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011014897.5A Active CN112133905B (en) | 2020-09-24 | 2020-09-24 | High-nickel ternary precursor and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112133905B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116119734B (en) * | 2022-12-30 | 2024-09-20 | 广西中伟新材料科技有限公司 | Positive electrode material precursor, preparation method of positive electrode material precursor, positive electrode material, preparation method of positive electrode material and lithium ion battery |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7282187B1 (en) * | 1996-03-26 | 2007-10-16 | Caboi Corporation | Recovery of metal values |
| US7479351B2 (en) * | 2003-10-09 | 2009-01-20 | Samsung Sdi Co., Ltd. | Electrode material for a lithium secondary battery, lithium secondary battery, and preparation method for the electrode material for a lithium secondary battery |
| IT1402160B1 (en) * | 2010-10-18 | 2013-08-28 | Eco Recycling S R L | PLANT AND PROCESS FOR FILE TREATMENT AND EXHAUSTED ACCUMULATORS |
| PL2641289T3 (en) * | 2010-11-17 | 2020-08-24 | Uchicago Argonne, Llc, Operator Of Argonne National Laboratory | Electrode structures and surfaces for li batteries |
| JP6216965B2 (en) * | 2012-01-31 | 2017-10-25 | 住友大阪セメント株式会社 | Electrode material, electrode plate, lithium ion battery, method for producing electrode material, and method for producing electrode plate |
| CN102881879B (en) * | 2012-10-15 | 2014-10-22 | 福建师范大学 | Method for preparing lithium-rich solid solution cathode material through gas oxidation and acid solution combined treatment |
| JP2014116161A (en) * | 2012-12-07 | 2014-06-26 | Agc Seimi Chemical Co Ltd | Method of producing positive electrode active material for lithium ion secondary battery |
| CN105794026B (en) * | 2013-12-02 | 2018-10-12 | 株式会社杰士汤浅国际 | Positive active material for lithium secondary battery, electrode of lithium secondary cell and lithium secondary battery |
| JP6483569B2 (en) * | 2015-08-13 | 2019-03-13 | Ｊｘ金属株式会社 | Lithium-ion battery processing method |
| WO2017082314A1 (en) * | 2015-11-11 | 2017-05-18 | 旭硝子株式会社 | Positive electrode active material production method, positive electrode active material, positive electrode, and lithium ion secondary battery |
| WO2017087403A1 (en) * | 2015-11-16 | 2017-05-26 | The Regents Of The University Of California | Lithium-excess cathode material and co-precipitation formation method |
| US10615414B2 (en) * | 2016-01-15 | 2020-04-07 | Toda Kogyo Corp. | Lithium nickelate-based positive electrode active substance particles and process for producing the same, and non-aqueous electrolyte secondary battery |
| KR101682217B1 (en) * | 2016-09-02 | 2016-12-05 | 주식회사 재영텍 | A Method Of Manufacturing A Lithium Carbonate With High Purity By Recycling A Lithium From A Anode Material Of Used Lithium Ion Secondary Battery |
| US20190379043A1 (en) * | 2016-11-25 | 2019-12-12 | Sumitomo Metal Mining Co., Ltd. | Transition metal composite hydroxide and method for producing the same, positive electrode active material for a non-aqueous electrolyte secondary battery and method for producing the same, and non-aqueous electrolyte secondary battery |
| CN110494394A (en) * | 2017-03-15 | 2019-11-22 | 尤米科尔公司 | For manufacturing the nitrate method of transition metal hydroxide precursor |
| CN107968198B (en) * | 2017-11-24 | 2021-03-12 | 中国科学院过程工程研究所 | Nickel-cobalt lithium manganate precursor with core-shell structure, preparation method thereof and application of precursor in lithium ion battery |
| CN110642303A (en) * | 2019-08-30 | 2020-01-03 | 广东新凌嘉新能源股份有限公司 | Improved power ternary cylindrical lithium battery positive electrode material and preparation method thereof |
| CN110518219B (en) * | 2019-09-04 | 2023-08-01 | 中南大学 | Core-shell structured high nickel gradient nickel-cobalt-manganese-aluminum quaternary positive electrode material and preparation method thereof |
| CN110690444A (en) * | 2019-10-10 | 2020-01-14 | 山东省科学院能源研究所 | High-nickel ternary cathode material with layered porous structure, and preparation method and application thereof |
| CN111525113B (en) * | 2020-05-07 | 2021-02-12 | 浙江帕瓦新能源股份有限公司 | Core-shell structure high-nickel ternary precursor, preparation method thereof and hollow doped high-nickel ternary cathode material |
| CN111675247A (en) * | 2020-06-12 | 2020-09-18 | 福建常青新能源科技有限公司 | Method for preparing precursor of NCM high-nickel ternary cathode material |
-
2020
- 2020-09-24 CN CN202011014897.5A patent/CN112133905B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112133905A (en) | 2020-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107324405B (en) | A kind of lithium nickel cobalt manganese oxide precursor and preparation method thereof and lithium ion battery by the precursor preparation | |
| CN106505193A (en) | Monocrystalline nickel-cobalt lithium manganate cathode material and preparation method thereof and lithium ion battery | |
| CN111498908A (en) | Preparation method of quasi-spherical manganese-rich ternary precursor | |
| CN108946827B (en) | Ultra-small particle size nickel-cobalt-manganese hydroxide and preparation method thereof | |
| CN109301189B (en) | Preparation method of single-crystal-like high-nickel multi-component material | |
| JP2024524154A (en) | Multi-element zone-doped cobalt-free positive electrode material and its manufacturing method | |
| CN108428888B (en) | Spherical surface compact nickel-cobalt-aluminum ternary material, precursor thereof, preparation method and application thereof | |
| CN110190241A (en) | A kind of preparation method of nickel cobalt manganese granular precursor | |
| CN114426313A (en) | High-energy-density ternary cathode material and preparation method and application thereof | |
| CN112158893B (en) | Preparation method of lithium-rich manganese-based positive electrode material precursor | |
| CN113603153A (en) | Tungsten-doped high-nickel cobalt-free precursor and preparation method thereof | |
| CN113659129A (en) | Multi-element doped ternary precursor and preparation method thereof | |
| WO2023138220A1 (en) | Preparation method for positive electrode material precursor having large channel, and application thereof | |
| CN113206242A (en) | Nickel-cobalt-manganese-aluminum quaternary precursor, positive electrode material and preparation method | |
| CN108264096A (en) | A kind of preparation method of high density little particle nickel cobalt manganese hydroxide | |
| CN108565455A (en) | A kind of method that non-nitrogen containing complexing agent auxiliary prepares spherical nickel cobalt manganese ternary precursor | |
| CN112133905B (en) | High-nickel ternary precursor and preparation method thereof | |
| CN109360948B (en) | Single-crystal-like high-nickel multi-element material precursor | |
| CN115872459A (en) | Double-layer coated ternary precursor and preparation method and application thereof | |
| CN112678883B (en) | Preparation method of surface cobalt-rich low-cobalt cathode material | |
| CN106328936A (en) | Preparation method of coated spherical nickel-cobalt-aluminum precursor, and preparation method of nickel-cobalt-lithium aluminate pole materials | |
| CN114195204A (en) | High-sphericity manganese-rich carbonate precursor and preparation method and application thereof | |
| CN114220959A (en) | Preparation method of component-controllable multi-element doped high-nickel ternary positive electrode material | |
| CN109524662A (en) | A kind of preparation method of the good nickel-cobalt lithium manganate cathode material of crystallinity | |
| CN101582499B (en) | Method for preparing submicron-sized anode material LiCoxNiyMnzO2 of lithium-ion 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |