CN109119607B - Polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material and preparation method thereof - Google Patents
Polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material and preparation method thereof Download PDFInfo
- Publication number
- CN109119607B CN109119607B CN201810880943.6A CN201810880943A CN109119607B CN 109119607 B CN109119607 B CN 109119607B CN 201810880943 A CN201810880943 A CN 201810880943A CN 109119607 B CN109119607 B CN 109119607B
- Authority
- CN
- China
- Prior art keywords
- manganese oxide
- positive electrode
- lithium
- electrode material
- nickel manganese
- 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
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
- H01M4/362—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
- 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
- H01M4/48—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
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
-
- 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
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
-
- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive electrodes
-
- 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 provides a preparation method of a polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material, which comprises the following steps: firstly), preparing sodium titanium boron codoped lithium nickel manganese oxide, and secondly) preparing a polypyrrole nanotube coated lithium nickel manganese oxide cathode material. The invention also discloses the polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material prepared by the preparation method of the polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material and a lithium ion battery using the polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material as a positive electrode material. Compared with the lithium nickel manganese oxide cathode material in the prior art, the polypyrrole nanotube coated lithium nickel manganese oxide cathode material prepared by the invention has the advantages of lower production cost, more excellent high-temperature cycle stability and electrochemical performance and longer cycle service life.
Description
Technical Field
The invention relates to the technical field of lithium nickel manganese oxide positive electrode materials, in particular to a polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material and a preparation method thereof.
Background
In recent years, with the rapid development of pure electric vehicles and hybrid electric vehicles, chemical power supplies with high energy, long service life and low cost are particularly urgent, and lithium ion batteries are distinguished from many chemical power supplies by the advantages of low self-discharge rate, high specific energy, no memory effect and the like, and are widely applied to portable electronic equipment and other high-energy equipment. In each component of the lithium ion battery, the quality of the performance of the anode material directly determines the quality and the cycle service life of the whole performance of the battery. The lithium nickel manganese oxide positive electrode material has the advantages of high energy density, low price, environmental friendliness, abundant resources, high voltage platform and the like, and is a preferred positive electrode material for high-specific-energy power batteries.
In the process of charging and discharging of the lithium nickel manganese oxide positive electrode material in the prior art, due to high voltage, electrolyte on the surface of an electrode is continuously oxidized and decomposed, lithium ions are consumed, effective lithium is reduced, and capacity attenuation is serious. In addition, the nickel lithium manganate crystal prepared at high temperature has oxygen defects, and a large amount of Mn is contained in the material in order to maintain electric neutrality3+In the presence of Mn3+Easily generate Mn by disproportionation reaction2+The dissolution of manganese during the circulation process also leads to the capacity attenuation of the material. The surface modification of the material is a direct method for solving the above problems, and the coating is a common method for surface modification, but most of common coating agents such as zinc oxide, aluminum oxide, silicon dioxide, aluminum fluoride and the like belong to semiconductors or insulators, and the electronic conductivity of the whole material is reduced after coating, so that the rate capability of the material is affected. In addition, although the coating agents prevent the lithium nickel manganese oxide positive electrode material from directly contacting with the electrolyte, the coating agents have the problems of corroding the surface of the material, increasing the resistance, reducing the specific capacity and the like.
Therefore, a more effective method for modifying the lithium nickel manganese oxide is sought, the high-temperature cycle stability and the electrochemical performance of the lithium nickel manganese oxide positive electrode material are improved, the service life of the material is prolonged, and the high-performance lithium nickel manganese oxide positive electrode material is prepared and has a positive effect on promoting the development of lithium ion batteries.
Disclosure of Invention
The invention mainly aims to provide a polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material and a preparation method thereof.
In order to achieve the above purpose, the invention provides a preparation method of a polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material, which comprises the following steps:
1) preparation of sodium titanium boron codoped lithium nickel manganese oxide: dissolving manganese acetate, lithium salt, sodium tetraborate, titanium tetrachloride and nickel salt in water, mixing and stirring for 2-3h, then drying in a forced air drying oven at 100-110 ℃, cooling to room temperature, ball-milling, calcining at 800-900 ℃ for 20-30h, cooling to room temperature after calcining and sintering, taking out for grinding, and sieving with a 200-mesh 400-mesh sieve to obtain sodium-titanium-boron co-doped nickel lithium manganate;
2) preparing a polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material: dispersing the sodium-titanium-boron co-doped lithium nickel manganese oxide prepared in the step 1) in an ethanol solution of 20-30% of iron p-toluenesulfonate in mass fraction, stirring the suspension at 5-10 ℃ for 15-20 minutes, adding pyrrole, then mechanically stirring for reaction for 35-45 minutes, finally repeatedly washing with ethanol and water for centrifugal separation, drying in an oven at 60-70 ℃ for 4-5 hours, and grinding and sieving to obtain the polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material.
Preferably, the mass ratio of the manganese acetate, the lithium salt, the sodium tetraborate, the titanium tetrachloride, the nickel salt and the water in the step 1) is 1.47 (1-1.05):0.01:0.02:0.5 (6-10).
Preferably, the lithium salt is selected from one or more of lithium acetate, lithium nitrate or lithium chloride.
Preferably, the nickel salt is selected from one or more of nickel acetate, nickel nitrate or nickel chloride.
Preferably, the mass ratio of the sodium-titanium-boron co-doped lithium nickel manganese oxide, the ethanol solution of ferric p-toluenesulfonate and the pyrrole in the step 2) is 5 (20-23) to (0.25-0.35).
A polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material is prepared by adopting a preparation method of the polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material.
A lithium ion battery adopts the polypyrrole nanotube to coat a lithium nickel manganese oxide positive electrode material as a positive electrode material.
Due to the application of the technical scheme, the invention has the following beneficial effects:
(1) the preparation method of the polypyrrole nanotube coated lithium nickel manganese oxide cathode material disclosed by the invention is simple and feasible, has low requirements on equipment and reaction conditions, is easy to obtain raw materials, is low in price, and is suitable for large-scale production.
(2) Compared with the lithium nickel manganese oxide cathode material in the prior art, the polypyrrole nanotube coated lithium nickel manganese oxide cathode material disclosed by the invention is lower in production cost, more excellent in high-temperature cycle stability and electrochemical performance and longer in cycle service life.
(3) According to the polypyrrole nanotube coated lithium nickel manganese oxide cathode material disclosed by the invention, sodium titanium boron is introduced for substitution, so that the dissolution of manganese is effectively inhibited, the electrochemical performance of the material is not reduced, the problems of collapse, specific capacity loss and the like are effectively solved, and the cathode material has higher energy density; the lithium ion coefficient is improved, so that the rate performance of the product is improved, the polypyrrole nanotube coated on the surface prevents the direct contact between the lithium nickel manganese oxide positive electrode material and the electrolyte, and the polypyrrole tube has excellent conductivity without reducing the conductivity.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
The raw materials in the examples of the present invention were purchased from Mobei (Shanghai) Biotech Co., Ltd.
Example 1
A preparation method of a polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material comprises the following steps:
1) preparation of sodium titanium boron codoped lithium nickel manganese oxide: dissolving 14.7g of manganese acetate, 10g of lithium acetate, 0.1g of sodium tetraborate, 0.2g of titanium tetrachloride and 5g of nickel acetate in 60g of water, mixing and stirring for 2h, drying in a forced air drying oven at 100 ℃, cooling to room temperature, ball-milling, calcining at 800 ℃ for 20h, cooling to room temperature after calcination, taking out, grinding, and sieving with a 200-mesh sieve to obtain sodium-titanium-boron co-doped nickel lithium manganate;
2) preparing a polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material: dispersing 5g of the sodium-titanium-boron co-doped nickel lithium manganate prepared in the step 1) into 20g of ethanol solution of iron p-toluenesulfonate with the mass fraction of 20%, stirring the suspension at 5 ℃ for 15 minutes, adding 0.25g of pyrrole, then mechanically stirring for reaction for 35 minutes, finally repeatedly washing with ethanol and water for centrifugal separation, drying in an oven at 60 ℃ for 4 hours, and grinding and sieving to obtain the polypyrrole nanotube coated nickel lithium manganate anode material.
A polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material is prepared by adopting a preparation method of the polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material.
A lithium ion battery adopts the polypyrrole nanotube to coat a lithium nickel manganese oxide positive electrode material as a positive electrode material.
Example 2
A preparation method of a polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material comprises the following steps:
1) preparation of sodium titanium boron codoped lithium nickel manganese oxide: dissolving 14.7g of manganese acetate, 10.1g of lithium nitrate, 0.1g of sodium tetraborate, 0.2g of titanium tetrachloride and 5g of nickel nitrate in 70g of water, mixing and stirring for 2.3h, drying in a forced air drying oven at 103 ℃, cooling to room temperature, then ball-milling, calcining for 23h at 830 ℃, cooling to room temperature after calcining, taking out and grinding, and sieving by a 250-mesh sieve to obtain sodium-titanium-boron co-doped nickel lithium manganate;
2) preparing a polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material: dispersing 5g of the sodium-titanium-boron co-doped nickel lithium manganate prepared in the step 1) into 21g of ethanol solution of 22% of iron p-toluenesulfonate, stirring the suspension at 6 ℃ for 17 minutes, adding 0.3g of pyrrole, mechanically stirring for reaction for 38 minutes, repeatedly washing with ethanol and water for centrifugal separation, drying in an oven at 64 ℃ for 4.3 hours, and grinding and sieving to obtain the polypyrrole nanotube coated nickel lithium manganate anode material.
A polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material is prepared by adopting a preparation method of the polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material.
A lithium ion battery adopts the polypyrrole nanotube to coat a lithium nickel manganese oxide positive electrode material as a positive electrode material.
Example 3
1) Preparation of sodium titanium boron codoped lithium nickel manganese oxide: dissolving 14.7g of manganese acetate, 10.2g of lithium chloride, 0.1g of sodium tetraborate, 0.2g of titanium tetrachloride and 5g of nickel chloride in 80g of water, mixing and stirring for 2.5h, drying at 105 ℃ in a forced air drying oven, cooling to room temperature, ball-milling, calcining for 25h at 850 ℃, cooling to room temperature after calcination, taking out and grinding, and sieving by a 300-mesh sieve to obtain sodium-titanium-boron co-doped nickel lithium manganate;
2) preparing a polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material: dispersing 5g of the sodium-titanium-boron co-doped nickel lithium manganate prepared in the step 1) into 22g of ethanol solution of 26% of iron p-toluenesulfonate in mass fraction, stirring the suspension at 8 ℃ for 18 minutes, adding 0.33g of pyrrole, then mechanically stirring for reaction for 40 minutes, finally repeatedly washing with ethanol and water for centrifugal separation, drying in an oven at 68 ℃ for 4.7 hours, and grinding and sieving to obtain the polypyrrole nanotube coated nickel lithium manganate anode material.
A polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material is prepared by adopting a preparation method of the polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material.
A lithium ion battery adopts the polypyrrole nanotube to coat a lithium nickel manganese oxide positive electrode material as a positive electrode material.
Example 4
1) Preparation of sodium titanium boron codoped lithium nickel manganese oxide: dissolving 14.7g of manganese acetate, 10.4g of lithium acetate, 0.1g of sodium tetraborate, 0.2g of titanium tetrachloride and 5g of nickel nitrate in 80g of water, mixing and stirring for 2.8h, drying at 108 ℃ in a forced air drying oven, cooling to room temperature, then ball-milling, calcining at 880 ℃ for 28h, cooling to room temperature after calcination, taking out and grinding, and sieving with a 350-mesh sieve to obtain sodium-titanium-boron co-doped nickel lithium manganate;
2) preparing a polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material: dispersing 5g of the sodium-titanium-boron co-doped nickel lithium manganate prepared in the step 1) into 23g of ethanol solution of 28 mass percent of iron p-toluenesulfonate, stirring the suspension at 9 ℃ for 19 minutes, adding 0.34g of pyrrole, then mechanically stirring for reacting for 43 minutes, finally repeatedly washing with ethanol and water for centrifugal separation, drying in an oven at 69 ℃ for 4.8 hours, and grinding and sieving to obtain the polypyrrole nanotube coated nickel lithium manganate anode material.
A polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material is prepared by adopting a preparation method of the polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material.
A lithium ion battery adopts the polypyrrole nanotube to coat a lithium nickel manganese oxide positive electrode material as a positive electrode material.
Example 5
1) Preparation of sodium titanium boron codoped lithium nickel manganese oxide: dissolving 14.7g of manganese acetate, 10.5g of lithium nitrate, 0.1g of sodium tetraborate, 0.2g of titanium tetrachloride and 5g of nickel chloride in 100g of water, mixing and stirring for 3h, drying in a forced air drying oven at 110 ℃, cooling to room temperature, ball-milling, calcining at 900 ℃ for 30h, cooling to room temperature after calcining, taking out, grinding, and sieving with a 400-mesh sieve to obtain sodium-titanium-boron co-doped nickel lithium manganate;
2) preparing a polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material: dispersing 5g of the sodium-titanium-boron co-doped nickel lithium manganate prepared in the step 1) into 23g of an ethanol solution of 30% by mass of iron p-toluenesulfonate, stirring the suspension at 10 ℃ for 20 minutes, adding 3.5g of pyrrole, mechanically stirring for reaction for 45 minutes, repeatedly washing with ethanol and water for centrifugal separation, drying in an oven at 70 ℃ for 5 hours, and grinding and sieving to obtain the polypyrrole nanotube coated nickel lithium manganate anode material.
A polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material is prepared by adopting a preparation method of the polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material.
A lithium ion battery adopts the polypyrrole nanotube to coat a lithium nickel manganese oxide positive electrode material as a positive electrode material.
Comparative example
The present example provides a lithium nickel manganese oxide positive electrode material, the raw material and formula of which are the same as those of the Chinese invention patent CN 107394171A
Example 1.
Relevant performance tests are carried out on the lithium nickel manganese oxide positive electrode materials obtained in the above examples 1 to 5 and comparative example, the test results are shown in table 1, and the test methods are as follows: dissolving the lithium manganate positive electrode material, Super P and PVDF in a mass ratio of 8:1:1 in N-methyl pyrrolidone (NMP) to prepare slurry, and coating the slurry on an aluminum foil by using an automatic coating machine. After vacuum drying for 12h, cutting into positive plates. The obtained product is transferred into a glove box with argon atmosphere, and a 2032 button cell is assembled by a metal lithium sheet, a diaphragm, electrolyte and a liquid absorption film. Wherein the electrolyte is 1mol L-1LiPF6EC/DMC (volume ratio 1:1), septum Celgard 2400. And (3) carrying out charge and discharge tests on the assembled button cell by adopting a LAND test system, wherein the cut-off voltage of the test is 3-4.9V.
TABLE 1
As can be seen from the above table, the polypyrrole tube coated lithium nickel manganese oxide positive electrode material disclosed in the embodiment of the present invention has more excellent electrochemical performance compared with a lithium nickel manganese oxide positive electrode material in the prior art.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A preparation method of a polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material is characterized by comprising the following steps:
1) preparation of sodium titanium boron codoped lithium nickel manganese oxide: dissolving manganese acetate, lithium salt, sodium tetraborate, titanium tetrachloride and nickel salt in water, mixing and stirring for 2-3h, then drying in a forced air drying oven at 100-110 ℃, cooling to room temperature, ball-milling, calcining at 800-900 ℃ for 20-30h, cooling to room temperature after calcining, taking out for grinding, and sieving with a 200-mesh 400-mesh sieve to obtain sodium-titanium-boron co-doped nickel lithium manganate; the mass ratio of the manganese acetate to the lithium salt to the sodium tetraborate to the titanium tetrachloride to the nickel salt to the water is 1.47 (1-1.05) to 0.01:0.02:0.5 (6-10);
2) preparing a polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material: dispersing the sodium-titanium-boron co-doped nickel lithium manganate prepared in the step 1) into an ethanol solution of 20-30% of iron p-toluenesulfonate in mass fraction, stirring the suspension at 5-10 ℃ for 15-20 minutes, adding pyrrole, then mechanically stirring for reaction for 35-45 minutes, finally repeatedly washing with ethanol and water for centrifugal separation, drying in an oven at 60-70 ℃ for 4-5 hours, and grinding and sieving to obtain a polypyrrole nanotube coated nickel lithium manganate positive electrode material; the mass ratio of the sodium-titanium-boron co-doped lithium nickel manganese oxide to the ethanol solution of ferric p-toluenesulfonate to the pyrrole is 5 (20-23) to 0.25-0.35.
2. The method for preparing the polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material according to claim 1, wherein the lithium salt is selected from one or more of lithium acetate, lithium nitrate and lithium chloride.
3. The preparation method of the polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material according to the claim 1, wherein the nickel salt is selected from one or more of nickel acetate, nickel nitrate and nickel chloride.
4. The polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material prepared by the preparation method of the polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material disclosed by any one of claims 1 to 3.
5. A lithium ion battery adopting the polypyrrole nanotube coated lithium nickel manganese oxide cathode material of claim 4 as a cathode material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810880943.6A CN109119607B (en) | 2018-08-04 | 2018-08-04 | Polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810880943.6A CN109119607B (en) | 2018-08-04 | 2018-08-04 | Polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109119607A CN109119607A (en) | 2019-01-01 |
| CN109119607B true CN109119607B (en) | 2022-04-01 |
Family
ID=64852982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810880943.6A Active CN109119607B (en) | 2018-08-04 | 2018-08-04 | Polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109119607B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114824267B (en) * | 2022-03-29 | 2024-02-13 | 蜂巢能源科技股份有限公司 | Layered lithium nickel manganese oxide positive electrode material and preparation method and application thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908620A (en) * | 2010-06-02 | 2010-12-08 | 东北大学 | Method for preparing lithium ion battery material LiNi0.5Mn1.5-xTixO4 |
| CN103094552A (en) * | 2012-10-12 | 2013-05-08 | 合肥国轩高科动力能源股份公司 | Surface coating method of 5V lithium ion battery positive pole material LiNi0.5-xMn1.5MxO4 |
| CN103199234A (en) * | 2013-03-21 | 2013-07-10 | 湖南桑顿新能源有限公司 | Method for preparing high-temperature-resistance boron-doped spinel lithium manganese |
| CN103647071A (en) * | 2013-12-23 | 2014-03-19 | 湖南杉杉新材料有限公司 | High-compaction-density lithium-manganese oxide for lithium ion battery and preparation method thereof |
| CN103996844A (en) * | 2014-05-26 | 2014-08-20 | 东莞市迈科科技有限公司 | Composite lithium nickel manganese oxide positive electrode material and preparation method thereof |
| CN104350636A (en) * | 2012-07-09 | 2015-02-11 | 株式会社Lg化学 | High voltage anode active material and lithium secondary battery including same |
| CN106450285A (en) * | 2016-11-25 | 2017-02-22 | 桂林理工大学 | Preparation method capable of increasing electrochemical performance of magnesium-sodium-doped lithium permanganate anode material |
| CN106784657A (en) * | 2016-11-29 | 2017-05-31 | 桂林理工大学 | A kind of method that sodium and iron codope prepare High-performance lithium manganate anode material |
| CN107507976A (en) * | 2017-07-21 | 2017-12-22 | 中南大学 | Composite mixed manganate cathode material for lithium of a kind of lithium aluminium boron and preparation method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0380726A1 (en) * | 1989-01-31 | 1990-08-08 | Rockwell International Corporation | Production of polypyrrole gel suitable for casting conductive polypyrrole films |
| CN101621125B (en) * | 2009-02-13 | 2011-03-30 | 成都晶元新材料技术有限公司 | Nickel-cobalt-manganese multi-doped lithium ion battery cathode material and preparation method thereof |
| CN103112238B (en) * | 2013-01-28 | 2014-11-05 | 电子科技大学 | Preparation method of conducting polymer composite thin film |
| KR101666872B1 (en) * | 2013-04-23 | 2016-10-17 | 삼성에스디아이 주식회사 | Positive electrode active material and method of manufacturing the same, and rechargeable lithium battery including the positive electrode active material |
| CN106887583B (en) * | 2015-12-15 | 2019-11-12 | 中国科学院化学研究所 | A kind of positive electrode and its preparation method and application |
-
2018
- 2018-08-04 CN CN201810880943.6A patent/CN109119607B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908620A (en) * | 2010-06-02 | 2010-12-08 | 东北大学 | Method for preparing lithium ion battery material LiNi0.5Mn1.5-xTixO4 |
| CN104350636A (en) * | 2012-07-09 | 2015-02-11 | 株式会社Lg化学 | High voltage anode active material and lithium secondary battery including same |
| CN103094552A (en) * | 2012-10-12 | 2013-05-08 | 合肥国轩高科动力能源股份公司 | Surface coating method of 5V lithium ion battery positive pole material LiNi0.5-xMn1.5MxO4 |
| CN103199234A (en) * | 2013-03-21 | 2013-07-10 | 湖南桑顿新能源有限公司 | Method for preparing high-temperature-resistance boron-doped spinel lithium manganese |
| CN103647071A (en) * | 2013-12-23 | 2014-03-19 | 湖南杉杉新材料有限公司 | High-compaction-density lithium-manganese oxide for lithium ion battery and preparation method thereof |
| CN103996844A (en) * | 2014-05-26 | 2014-08-20 | 东莞市迈科科技有限公司 | Composite lithium nickel manganese oxide positive electrode material and preparation method thereof |
| CN106450285A (en) * | 2016-11-25 | 2017-02-22 | 桂林理工大学 | Preparation method capable of increasing electrochemical performance of magnesium-sodium-doped lithium permanganate anode material |
| CN106784657A (en) * | 2016-11-29 | 2017-05-31 | 桂林理工大学 | A kind of method that sodium and iron codope prepare High-performance lithium manganate anode material |
| CN107507976A (en) * | 2017-07-21 | 2017-12-22 | 中南大学 | Composite mixed manganate cathode material for lithium of a kind of lithium aluminium boron and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| effect of ti substitution for Mn on the Structure of LiN0.5Mn1.5-xTixO4 and their electrochemical properties as lithium insertion Material;J-H Kim等;《Journal of electrochemical society》;20041022;第151卷(第11期);第A1911-A1918页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109119607A (en) | 2019-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103972497B (en) | Lithium ion battery Co2snO4/ C nano composite negative pole material and preparation and application thereof | |
| CN110112388B (en) | Porous tungsten trioxide coated modified positive electrode material and preparation method thereof | |
| CN110668509A (en) | Selenium-coated high-nickel ternary layered positive electrode material and preparation method thereof | |
| CN111952572A (en) | Cobalt-nickel bimetallic nitrogen-doped carbon composite material containing single-atom active site and preparation method and application thereof | |
| CN104518207B (en) | A kind of lithium ion battery anode active material and preparation method, anode and lithium ion battery | |
| CN103390748B (en) | A kind of preparation method of alumina-coated lithium cobaltate cathode material | |
| CN104852040B (en) | A kind of preparation method of the nickel lithium manganate cathode material of high multiplying power lithium ion battery | |
| CN108807920B (en) | LASO-coated octahedral-structure lithium nickel manganese oxide composite material and preparation method thereof | |
| CN111646459A (en) | Preparation method and application of boron-doped graphene material | |
| CN106450285A (en) | Preparation method capable of increasing electrochemical performance of magnesium-sodium-doped lithium permanganate anode material | |
| CN104466139A (en) | Preparation method of polyaniline-clad germanium-doped lithium manganate composite cathode material | |
| CN110336035B (en) | Tin dioxide/aluminum oxide doped carbon composite material and preparation method thereof | |
| CN110112387B (en) | Titanium suboxide coated and modified cathode material and preparation method thereof | |
| CN114702614A (en) | Cathode material for improving cycling stability of vulcanized polyacrylonitrile battery and preparation method thereof | |
| CN108695509B (en) | Composite lithium battery positive electrode with high energy storage efficiency, preparation method thereof and lithium battery | |
| CN106450279A (en) | Preparation method of graphene coated nickel cobalt manganese lithium ion battery cathode material | |
| CN107226454B (en) | Preparation method of lithium titanate-graphene composite negative electrode material | |
| WO2019104948A1 (en) | Molybdenum doping-modified lithium manganese oxide composite material, preparation method therefor and lithium ion battery | |
| CN113735174A (en) | Aqueous zinc ion battery positive electrode material based on monovalent cation doped manganese-based compound and preparation method and application thereof | |
| CN109244446B (en) | Modified nickel-cobalt-manganese ternary cathode material and preparation method thereof | |
| CN109119607B (en) | Polypyrrole nanotube coated lithium nickel manganese oxide positive electrode material and preparation method thereof | |
| CN115084471B (en) | Layered halide double perovskite lithium ion battery anode material and preparation method thereof | |
| CN107834054B (en) | Preparation method of lithium nickel manganese oxide-graphene composite material for lithium ion battery | |
| CN112125340B (en) | Lithium manganate and preparation method and application thereof | |
| CN108258304A (en) | A kind of Al3+ and F- that mixes improves the preparation method of LiMn2O4 high temperature cyclic performance |
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 | ||
| CB02 | Change of applicant information |
Address after: 315300 Xinxing Avenue 256 Zonghan Street, Xinxing Industrial Cluster District, Cixi City, Ningbo City, Zhejiang Province Applicant after: Zhejiang Jinying Wali New Energy Technology Co., Ltd Address before: 315300 Xinxing Avenue 256 Zonghan Street, Xinxing Industrial Cluster District, Cixi City, Ningbo City, Zhejiang Province Applicant before: Zhejiang Welly Energy Corporation |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |