CN112614978B - Cage-shaped eutectic high-entropy oxide lithium ion battery cathode material and preparation method thereof - Google Patents
Cage-shaped eutectic high-entropy oxide lithium ion battery cathode material and preparation method thereof Download PDFInfo
- Publication number
- CN112614978B CN112614978B CN202011498597.9A CN202011498597A CN112614978B CN 112614978 B CN112614978 B CN 112614978B CN 202011498597 A CN202011498597 A CN 202011498597A CN 112614978 B CN112614978 B CN 112614978B
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- entropy oxide
- ion battery
- oxide lithium
- negative electrode
- 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
- H01M4/362—Composites
-
- 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
- H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
-
- 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
- H01M4/502—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese for non-aqueous cells
-
- 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
- H01M4/523—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron for non-aqueous cells
-
- 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 relates to the technical field of battery materials, in particular to a novel cage-shaped eutectic high-entropy oxide material with early high coulombic efficiency and a preparation method thereof, wherein the cage-shaped eutectic high-entropy oxide lithium ion battery cathode material has a chemical formula of (La)xCoCrFeMnNi)3/5+xO4‑δWherein x has a value of 0.07 to 0.5, and δ is the oxygen vacancy concentration; according to the invention, a certain amount of perovskite structure is introduced into the spinel type high-entropy oxide lithium ion negative electrode material, so that the first discharge coulombic efficiency of the lithium ion battery is improved, compared with a sample without the perovskite structure, the initial coulombic efficiency of the eutectic high-entropy oxide sample is more than 80%, and the reversible specific capacity is also improved; the physical and chemical properties of the perovskite structure are customized by regulating the relative content of the perovskite structure, and some special use requirements are met.
Description
Technical Field
The invention relates to the technical field of battery materials, in particular to a novel eutectic high-entropy oxide material with early high coulomb efficiency and cage-shaped appearance and a preparation method thereof.
Background
The lithium ion battery negative electrode material can be divided into the following components according to the lithium storage mechanism: carbon-based negative electrode materials (mesocarbon microbeads, artificial graphite, natural graphite and hard carbon materials), alloy type negative electrode materials (tin, silicon and germanium corresponding oxides) and 3d transition metal oxide negative electrode materials (M)xOyM = Co, Ni, Cu, Fe, etc.). The above negative electrode materialHave respective advantages and disadvantages. Compared with the current commercial graphite cathode material (theoretical capacity 372 mAh/g), the 3d transition metal oxide (theoretical capacity 500-1000 mAh/g) cathode material has higher theoretical capacity, but the first irreversible capacity loss of the 3d transition metal oxide electrode is large; meanwhile, due to poor conductivity, the cycle performance and the rate performance are poor due to large volume expansion in the charging and discharging processes, and the practical application of the composite material is limited. At present, improvement measures of nano-modification and composite modification are provided for solving the problems, but the use of nano materials increases the cost, and the problem that the mechanical property and the electric conductivity of the pole piece processed by the active substance are inconsistent is also caused.
In recent years, transition metal-based high-entropy oxides (TM-HEOs) as negative electrode materials of LIBs maintain structural integrity during a cyclic process due to a high-configuration entropy-stable crystal structure and gradual lithium storage characteristics, exhibit more excellent lithium ion storage performance and high-efficiency cyclic stability, and have attracted great interest to researchers. Research on high-entropy oxide lithium ion battery cathode materials has traditionally focused on rock salt structure (Co)0.2Cu0.2Mg0.2Ni0.2Zn0.2) O high entropy oxides, now further developed to spinel structure (Co)0.2Cr0.2Fe0.2Mn0.2Ni0.2)3O4And (Mg)0.2Ti0.2Zn0.2Cu0.2Fe0.2)3O4。
If researchers use mechanical ball milling and solid phase sintering method to prepare spinel type (Mg)0.2Ti0.2Zn0.2Cu0.2Fe0.2)3O4The electrochemical performance of the high-entropy oxide shows that the spinel type HEO shows excellent lithium ion storage performance at 100 mA g-1The reversible capacity after 300 cycles under the current density is 504 mAh g-1At 2000 mA g-1The reversible capacity under high current density is 272 and the energy conservation rate after 800 cycles is as high as 96.2%.
The negative electrode materials of the high-entropy oxide lithium ion battery have the problem of large initial irreversible capacity loss. It is worth noting that cycling stability is not the only important advantage in practical batteries, and high coulombic efficiency is also of paramount importance, especially during early cycling. Lower early cycle coulombic efficiency means greater lithium loss and electrolyte consumption during SEI formation. At present, the research on the high-entropy oxide lithium ion negative electrode material is still in the initial stage, the existing research is limited to the above types of high-entropy oxide materials, and no relevant report is found on how to improve the early coulombic efficiency of the high-entropy oxide.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a cage-shaped eutectic high-entropy oxide lithium ion battery cathode material and a preparation method thereof, and the first discharge coulombic efficiency of a lithium ion battery is improved through the mutual synergistic effect between a spinel phase and a perovskite phase.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
the cathode material of the cage-shaped eutectic high-entropy oxide lithium ion battery has a chemical formula of (La)xCoCrFeMnNi)3/5+xO4-δWherein x has a value of 0.07 to 0.5 and δ is the oxygen vacancy concentration.
Further, the preparation method of the cage-shaped eutectic high-entropy oxide lithium ion battery cathode material comprises the following steps:
(1) according to the formula (La)xCoCrFeMnNi)3/5+xO4-δWeighing metal nitrates in a stoichiometric ratio, dissolving the metal nitrates in a certain amount of distilled water, and uniformly stirring at room temperature to obtain a mixed solution containing the six metal nitrates;
(2) weighing a certain amount of fuel, adding the mixed solution, and uniformly stirring at room temperature to obtain transparent sol;
(3) putting the obtained transparent sol into a drying device, and evaporating the moisture in the transparent sol to obtain gel;
(4) the obtained gel is placed in a reaction device, and a certain amount of eutectic high-entropy oxide powder material with a perovskite structure is uniformly distributed in a spinel high-entropy oxide matrix by a one-step method of solution combustion reaction.
Further, in the cage-shaped eutectic high-entropy oxide lithium ion battery negative electrode material, in the step (1), the molar ratio of the rare earth cations to the metal cations is 0.07-0.5:1:1:1: 1.
Further, in the step (2), the fuel is at least one of glycine, citric acid, urea, glycine and ethylenediamine tetraacetic acid.
Further, in the anode material of the cage-shaped eutectic high-entropy oxide lithium ion battery, in the step (2), the molar ratio of the fuel to the total metal cations is 0.3-1.5: 1.
Further, in the step (3), the drying device is an oven, and the drying temperature is 80-150 ℃.
Further, in the step (4), the reaction device is a muffle furnace, and the cage-shaped eutectic high-entropy oxide lithium ion battery cathode material is prepared by the method.
Further, in the step (4), the reaction temperature of the reaction device is 450-950 ℃, and the reaction time is 30-60 min.
The invention has the beneficial effects that:
according to the invention, a certain amount of perovskite structure is introduced into the spinel type high-entropy oxide lithium ion negative electrode material, so that the first discharge coulombic efficiency of the lithium ion battery is improved, compared with a sample without the perovskite structure, the initial coulombic efficiency of the eutectic high-entropy oxide sample is more than 80%, and the reversible specific capacity is also improved; the physical and chemical properties of the perovskite structure are customized by regulating the relative content of the perovskite structure, and some special use requirements are met.
Of course, it is not necessary for any one product that embodies the invention to achieve all of the above advantages simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an SEM picture of a negative electrode material of a high-entropy oxide lithium ion battery of example 1;
FIG. 2 is an XRD picture of the cathode material of the high-entropy oxide lithium ion battery in example 1;
FIG. 3 shows the cycle performance and coulombic efficiency at a current density of 200 mA/g for an electrode made of the negative electrode material of the high-entropy oxide lithium ion battery in example 1;
fig. 4 is an XRD picture of the high-entropy oxide lithium ion battery cathode material of example 2.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a cage-shaped eutectic high-entropy oxide lithium ion negative electrode material with early high coulombic efficiency has a molecular formula of (La)0.2CoCrFeMnNi)3/5.2O4-δ: weighing corresponding rare earth nitrate and metal nitrate according to the stoichiometric ratio of molecular formula, specifically 1.948g La (NO)3)3·9H2O, 5.821g of Co (NO)3)2·6H2O, 8.003g of Cr (NO)3)3·9H2O, 8.080g of Fe (NO)3)3·9H2O, 5.020g Mn (NO)3)2·4H2O and 5.816g of Ni (NO)3)2·6H2Dissolving O in 15ml of distilled water, and uniformly stirring to obtain a mixed solution of metal salts; then weighing 2.342g of glycine, adding the glycine into the mixed solution, magnetically stirring the mixed solution for 1h, drying the mixed solution at the temperature of 80 ℃ to obtain gel, placing the gel in a muffle furnace for reacting for 0.5h at the temperature of 750 ℃ to obtain the novel cage-shaped eutectic high-entropy oxide (La) containing 3.4% of perovskite structure in spinel phase0.2CoCrFeMnNi)3/5.2O4-δThe XRD picture and SEM picture of the powder material are shown in figure 1 and figure 2.
The electrochemical performance of the eutectic high-entropy oxide electrode material was evaluated using CR2025 button cells: firstly, mixing an active substance, a conductive agent (Super P carbon black) and a binding agent polyvinylidene fluoride (PVDF) according to a mass ratio of 7: 2: 1, fully grinding in a solvent N-methyl pyrrolidone; uniformly coating the ground slurry on a neat copper foil, and then drying the neat copper foil in vacuum at 60 ℃ for 24 hours; finally, cutting the copper foil into circular electrode plates with the diameter of 16mm, compacting the electrode plates by keeping the pressure of 8MPa for 30s to obtain the electrode plates with the mass load of 0.75-1.25mg/cm2The eutectic high-entropy oxide electrode sheet. The assembly of the button cell is completed in a glove box filled with high-purity argon, a pure lithium sheet with the diameter of 12.5mm is taken as a counter electrode, a polypropylene porous membrane is taken as a diaphragm, and lmol/L LiPF6The solution of DMC-EC-DEC (volume ratio 1:1: 1) is used as electrolyte. The charge and discharge experiments of the battery were performed on the novice battery test system, with the following results: (La)0.2CoCrFeMnNi)3/5.2O4-δThe electrode can be 200 mA/cm2The charge-discharge cycle test is carried out under the current density of the capacitor, and the first discharge coulombic efficiency is 87.3 percent and the capacity is still kept about 352mAh/g after 80 cycles within the voltage range of 0.01V-3.0V; and spinel type (CoCrFeMnNi) prepared under the same conditions3/5O4The first discharge coulombic efficiency of the electrode is 63.4%, and the capacity is 410mAh/g after 80 times of circulation. (La)0.2CoCrFeMnNi)3/5.2O4-δAnd (CoCrFeMnNi)3/5O4The cycling performance and coulombic efficiency of the electrode at a current density of 200 mA/g are shown in FIG. 3.
Example 2:
a cage-shaped eutectic high-entropy oxide lithium ion negative electrode material with early high coulombic efficiency has a molecular formula of (La)0.07CoCrFeMnNi)3/5.2O4-δ: weighing corresponding rare earth nitrate and metal nitrate according to the stoichiometric ratio of molecular formula, specifically 0.682g La (NO)3)3·9H2O, 5.821g of Co (NO)3)2·6H2O, 8.003g of Cr (NO)3)3·9H2O, 8.080g of Fe (NO)3)3·9H2O, 5.020g Mn (NO)3)2·4H2O and 5.816g of Ni (NO)3)2·6H2Dissolving O in 10ml of distilled water, and uniformly stirring to obtain a mixed solution of metal salts; then 6.090g of urea is weighed and added into the mixed solution, after magnetic stirring is carried out for 0.5h, the mixed solution is dried at the temperature of 60 ℃ to obtain gel, and then the gel is placed in a muffle furnace for reaction at the temperature of 450 ℃ for 1h to obtain the cage-shaped novel eutectic high-entropy oxide (La) containing 2.2 percent of perovskite structure in spinel phase0.07CoCrFeMnNi)3/5.2O4-δFig. 4 shows an XRD pattern of the powder material.
The electrochemical performance of the eutectic high-entropy oxide electrode material was evaluated using CR2025 button cells: firstly, mixing an active substance, a conductive agent (Super P carbon black) and a binding agent polyvinylidene fluoride (PVDF) according to a mass ratio of 7: 2: 1, fully grinding in a solvent N-methyl pyrrolidone; uniformly coating the ground slurry on a neat copper foil, and then drying the neat copper foil in vacuum at 60 ℃ for 24 hours; finally, cutting the copper foil into circular electrode plates with the diameter of 16mm, compacting the electrode plates by keeping the pressure of 8MPa for 30s to obtain the electrode plates with the mass load of 0.75-1.25mg/cm2The eutectic high-entropy oxide electrode sheet. The assembly of the button cell is completed in a glove box filled with high-purity argon, a pure lithium sheet with the diameter of 12.5mm is taken as a counter electrode, a polypropylene porous membrane is taken as a diaphragm, and lmol/L LiPF6The solution of DMC-EC-DEC (volume ratio 1:1: 1) is used as electrolyte. The charge and discharge experiments of the battery were performed on the novice battery test system, with the following results: (La)0.2CoCrFeMnNi)3/5.2O4-δThe electrode can be 200 mA/cm2Current density ofAnd then, a charge-discharge cycle test is carried out, and the first discharge coulombic efficiency is 83.3% and the capacity is still kept about 375mAh/g after 80 cycles in a voltage range of 0.01V-3.0V.
Example 3:
a cage-shaped eutectic high-entropy oxide lithium ion negative electrode material with early high coulombic efficiency has a molecular formula of (La)0.5CoCrFeMnNi)3/5.2O4-δ: weighing corresponding rare earth nitrate and metal nitrate according to the stoichiometric ratio of molecular formula, specifically 4.871g La (NO)3)3·9H2O, 5.821g of Co (NO)3)2·6H2O, 8.003g of Cr (NO)3)3·9H2O, 8.080g of Fe (NO)3)3·9H2O, 5.020g Mn (NO)3)2·4H2O and 5.816g of Ni (NO)3)2·6H2Dissolving O in 20ml of distilled water, and uniformly stirring to obtain a mixed solution of metal salts; then weighing 6.005g of acetic acid and 5.010g of ammonium acetate, adding the acetic acid and the ammonium acetate into the mixed solution, magnetically stirring the mixture for 0.5h, drying the mixture at the temperature of 80 ℃ to obtain gel, and then placing the gel in a muffle furnace for reacting for 1h at the temperature of 950 ℃ to obtain the novel cage-shaped eutectic high-entropy oxide (La) containing 20.7 percent of perovskite structure in the spinel phase0.5CoCrFeMnNi)3/5.2O4-δAnd (3) powder.
The electrochemical performance of the eutectic high-entropy oxide electrode material was evaluated using CR2025 button cells: firstly, mixing an active substance, a conductive agent (Super P carbon black) and a binding agent polyvinylidene fluoride (PVDF) according to a mass ratio of 7: 2: 1, fully grinding in a solvent N-methyl pyrrolidone; uniformly coating the ground slurry on a neat copper foil, and then drying the neat copper foil in vacuum at 60 ℃ for 24 hours; finally, cutting the copper foil into circular electrode plates with the diameter of 16mm, compacting the electrode plates by keeping the pressure of 8MPa for 30s to obtain the electrode plates with the mass load of 0.75-1.25mg/cm2The eutectic high-entropy oxide electrode sheet. The assembly of the button cell is completed in a glove box filled with high-purity argon, a pure lithium sheet with the diameter of 12.5mm is taken as a counter electrode, a polypropylene porous membrane is taken as a diaphragm, and lmol/L LiPF6The solution of DMC-EC-DEC (volume ratio 1:1: 1) is used as electrolyte. Electric powerThe cell charge and discharge experiments were performed on the novice cell test system with the following results: (La)0.5CoCrFeMnNi)3/5.2O4-δThe electrode can be 200 mA/cm2The first discharge coulombic efficiency is 80.7% and the capacity is still kept about 415mAh/g after 80 times of circulation in a voltage range of 0.01V-3.0V.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. The cage-shaped eutectic high-entropy oxide lithium ion battery cathode material is characterized in that: the chemical formula of the cage-shaped eutectic high-entropy oxide lithium ion battery cathode material is (La)xCoCrFeMnNi)3/5+xO4-δWherein x has a value of 0.07 to 0.5, and δ is the oxygen vacancy concentration;
the preparation method of the high-entropy oxide lithium ion battery negative electrode material comprises the following steps:
(1) according to the formula (La)xCoCrFeMnNi)3/5+xO4-δWeighing metal nitrates in a stoichiometric ratio, dissolving the metal nitrates in a certain amount of distilled water, and uniformly stirring at room temperature to obtain a mixed solution containing the six metal nitrates;
(2) weighing a certain amount of fuel, adding the mixed solution, and uniformly stirring at room temperature to obtain transparent sol;
(3) putting the obtained transparent sol into a drying device, and evaporating the moisture in the transparent sol to obtain gel;
(4) the obtained gel is placed in a reaction device, and a certain amount of eutectic high-entropy oxide powder material with a perovskite structure is uniformly distributed in a spinel high-entropy oxide matrix by a one-step method of solution combustion reaction.
2. The caged eutectic high entropy oxide lithium ion battery negative electrode material of claim 1, wherein: in the step (1), the molar ratio of the rare earth cations to the metal cations is 0.07-0.5:1:1:1:1: 1.
3. The caged eutectic high entropy oxide lithium ion battery negative electrode material of claim 1, wherein: in the step (2), the fuel is at least one of glycine, citric acid, urea, aminoacetic acid and ethylene diamine tetraacetic acid.
4. The caged eutectic high entropy oxide lithium ion battery negative electrode material of claim 1, wherein: in the step (2), the molar ratio of the fuel to the total metal cations is 0.3-1.5: 1.
5. The caged eutectic high entropy oxide lithium ion battery negative electrode material of claim 1, wherein: in the step (3), the drying device is an oven, and the drying temperature is 80-150 ℃.
6. The caged eutectic high entropy oxide lithium ion battery negative electrode material of claim 1, wherein: in the step (4), the reaction device is a muffle furnace.
7. The caged eutectic high entropy oxide lithium ion battery negative electrode material of claim 1, wherein: in the step (4), the reaction temperature of the reaction device is 450-950 ℃, and the reaction time is 30-60 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011498597.9A CN112614978B (en) | 2020-12-18 | 2020-12-18 | Cage-shaped eutectic high-entropy oxide lithium ion battery cathode material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011498597.9A CN112614978B (en) | 2020-12-18 | 2020-12-18 | Cage-shaped eutectic high-entropy oxide lithium ion battery cathode material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112614978A CN112614978A (en) | 2021-04-06 |
| CN112614978B true CN112614978B (en) | 2021-11-30 |
Family
ID=75240228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011498597.9A Active CN112614978B (en) | 2020-12-18 | 2020-12-18 | Cage-shaped eutectic high-entropy oxide lithium ion battery cathode material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112614978B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113149088A (en) * | 2021-06-15 | 2021-07-23 | 中钢集团洛阳耐火材料研究院有限公司 | High-emissivity infrared energy-saving high-entropy material with perovskite structure and preparation method thereof |
| CN115044935B (en) * | 2022-07-29 | 2024-03-08 | 东北大学秦皇岛分校 | Preparation method and application of nano high-entropy oxide |
| CN115747555A (en) * | 2022-11-02 | 2023-03-07 | 江苏科技大学 | Preparation method and application of hierarchical porous multi-component alloy electrode material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591098A (en) * | 2016-03-18 | 2016-05-18 | 武汉理工大学 | Li-rich positive electrode material with La doping and lithium amount change at same time and preparing method thereof |
| CN109019701A (en) * | 2018-07-23 | 2018-12-18 | 安徽工业大学 | A kind of preparation method of rock salt (MgCoCuNiZn) O high entropy oxide powder material |
| CN110563462A (en) * | 2019-09-19 | 2019-12-13 | 安徽工业大学 | B-site six-element high-entropy novel perovskite type high-entropy oxide material and preparation method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610822A (en) * | 2012-03-07 | 2012-07-25 | 宁德新能源科技有限公司 | Lithium ion secondary battery and anode material thereof |
| CN105576234B (en) * | 2014-10-13 | 2018-07-31 | 三峡大学 | A kind of lithium ion battery NiCrxOyNegative material and preparation method thereof |
| DE102014226390A1 (en) * | 2014-12-18 | 2016-06-23 | Bayerische Motoren Werke Aktiengesellschaft | Composite anode and this comprehensive lithium ion battery and method for producing the composite anode |
| US10355268B2 (en) * | 2015-08-17 | 2019-07-16 | Ut-Battelle, Llc | Carbon-metal oxide composite materials and their use in anodes of lithium and sodium ion batteries |
| CN110364717B (en) * | 2019-07-24 | 2020-08-11 | 东北大学秦皇岛分校 | Spinel type high-entropy oxide electrode material and preparation method thereof |
| CN110526706B (en) * | 2019-09-19 | 2021-09-21 | 安徽工业大学 | Eutectic high-entropy oxide powder material and preparation method thereof |
| CN110600703B (en) * | 2019-09-19 | 2022-09-30 | 安徽工业大学 | Five-element transition metal oxide high-entropy material for lithium ion battery |
-
2020
- 2020-12-18 CN CN202011498597.9A patent/CN112614978B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591098A (en) * | 2016-03-18 | 2016-05-18 | 武汉理工大学 | Li-rich positive electrode material with La doping and lithium amount change at same time and preparing method thereof |
| CN109019701A (en) * | 2018-07-23 | 2018-12-18 | 安徽工业大学 | A kind of preparation method of rock salt (MgCoCuNiZn) O high entropy oxide powder material |
| CN110563462A (en) * | 2019-09-19 | 2019-12-13 | 安徽工业大学 | B-site six-element high-entropy novel perovskite type high-entropy oxide material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112614978A (en) | 2021-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108878849B (en) | Synthesis process of lithium-rich oxide and lithium ion battery containing lithium-rich oxide | |
| CN112614978B (en) | Cage-shaped eutectic high-entropy oxide lithium ion battery cathode material and preparation method thereof | |
| CN110061229B (en) | High-power-density long-cycle-life sodium ion battery positive electrode material and preparation method and application thereof | |
| CN112599749B (en) | High-entropy oxide lithium ion battery cathode material with high conductivity and preparation method thereof | |
| CN110931797A (en) | High-nickel positive electrode material with composite coating layer and preparation method thereof | |
| CN109119624B (en) | Preparation method of lithium titanium phosphate coated lithium-rich manganese-based positive electrode material | |
| CN101941685A (en) | Preparation of spherical lithium iron phosphate material and lithium ion battery using spherical lithium iron phosphate material | |
| CN113948681B (en) | Biomass-based hard carbon compound composite material and preparation method and application thereof | |
| CN102800858A (en) | Preparation method and purpose for iron oxide-based anode material for lithium ion battery | |
| CN107946564B (en) | Rich in Na4Mn2O5/Na0.7MnO2Composite material and preparation method and application thereof | |
| CN115207340A (en) | Sodium ion battery layered oxide positive electrode material and preparation method and application thereof | |
| CN103000879A (en) | Preparation method of spinel type lithium-nickel-manganese oxide with one-dimensional porous structure | |
| CN112771693B (en) | Three-dimensional composite metal lithium cathode, metal lithium battery and device | |
| CN114597370B (en) | Air-stable high-voltage long-cycle-life sodium ion battery positive electrode material and preparation method thereof | |
| CN108172813B (en) | Composite cathode material and preparation method thereof | |
| CN107394147B (en) | NaVPO4F/C sodium ion composite anode and preparation method thereof | |
| CN107482181B (en) | Composite lithium ion battery anode material Li3V2(PO4)3/C and preparation method thereof | |
| CN115010186A (en) | High-capacity oxygen valence-variable sodium ion battery positive electrode material and preparation method thereof | |
| CN114014330A (en) | Energy storage electrode material K3Nb3Si2O13Preparation method and application of | |
| CN114142033A (en) | Modified graphite negative electrode material for lithium ion battery | |
| CN110518194B (en) | Method for preparing core-shell silicon/carbon composite material by in-situ carbon coating and application thereof | |
| CN110921720B (en) | High-voltage lithium ion battery positive electrode material and preparation method thereof | |
| CN114275829A (en) | Surface-microporous hollow spherical high-entropy oxide and preparation method and application thereof | |
| CN114050250A (en) | Carbon-coated sodium iron phosphate sodium ion battery positive electrode material, and preparation method and application thereof | |
| CN112599750B (en) | Spinel type high-entropy lithium ion negative electrode material containing fluorine-oxygen dianions and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |