CN105609718A - Spinel phase coated lithium-rich material Li1.87Mn0.94Ni0.19O3, preparation method and application therefor - Google Patents
Spinel phase coated lithium-rich material Li1.87Mn0.94Ni0.19O3, preparation method and application therefor Download PDFInfo
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- CN105609718A CN105609718A CN201510975426.3A CN201510975426A CN105609718A CN 105609718 A CN105609718 A CN 105609718A CN 201510975426 A CN201510975426 A CN 201510975426A CN 105609718 A CN105609718 A CN 105609718A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- 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
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- 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
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- 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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a spinel phase coated lithium-rich material Li1.87Mn0.94Ni0.19O3, a preparation method and an application therefor, and belongs to the electrochemical technical field. The invention discloses a new material used as a lithium ion battery positive electrode, namely the spinel phase coated lithium-rich material Li1.87Mn0.94Ni0.19O3, and the preparation method is simple. When the material is used as the positive electrode material of a button lithium battery, the cycling stability of the button lithium battery under a high rate of 1C (250 mA/g) can be improved, and a relatively high specific capacity can be ensured as well; at present, the stable cycling performance of the button lithium battery under the rate of 1C is improved to be more than 200 circles; and meanwhile, the capacity is kept at about 180mA/g.
Description
Technical field
The present invention relates to technical field of electrochemistry, particularly the coated rich lithium material Li of a kind of Spinel1.87Mn0.94Ni0.19O3, its preparation method and application thereof.
Background technology
In recent years, day by day serious along with energy environment issues, and the requirement of electronic product lightness, people deepen continuously to the research of lithium ion battery.
At present, the positive electrode of lithium-ion-power cell mainly adopts LiMn2O4, LiFePO4 or multivariant oxide positive electrode, but material gram volume is low, and under high magnification, cyclical stability is poor, storge quality is poor, also needs to continue to improve.
Summary of the invention
In order to make up the deficiencies in the prior art, the invention provides the coated rich lithium material Li of a kind of Spinel1.87Mn0.94Ni0.19O3, its preparation method and application thereof.
Technical scheme of the present invention is:
The surface coated rich lithium material Li of a kind of Spinel1.87Mn0.94Ni0.19O3, comprise rich lithium material and be coated on the outer field Spinel clad of rich lithium material; Described rich lithium material is made up of Li element, Mn element, Ni element and O element, and the mol ratio of described Li element, Mn element, Ni element and O element is 1.87:0.94:0.19:3; Described Spinel clad is galaxite.
As preferred version, the thickness of described Spinel clad is 2-2.5nm.
The surface coated rich lithium material Li of described Spinel1.87Mn0.94Ni0.19O3Preparation method, comprise step:
1) mixed solution of preparation manganese nitrate and nickel nitrate, the mol ratio of manganese nitrate and nickel nitrate is 4.9-5.1:1, in mixed solution, the total concentration of manganese ion and nickel ion is 0.2-0.25mol/L;
2) in mixture, add gradually sodium carbonate liquor, the concentration of sodium carbonate liquor is 0.2-0.25mol/L, add carbonate in carbon acid solution molal quantity equate with manganese ion and nickel ion molal quantity summation;
3) stir 15-25 hour, obtain the mixed carbonate sediment of nickel and manganese;
4) isolate mixed carbonate sediment, dry 20-28 hour at 105-120 DEG C, then in air atmosphere, sintering 4-6 hour at 470-530 DEG C, obtains the mixed oxide of nickel and manganese;
5) mixed oxide of nickel and manganese is evenly mixed according to mass ratio 1:1.078-1.122 with lithium hydroxide, then, at 850-950 DEG C, sintering 11-13 hour in air atmosphere, obtains rich lithium material Li1.87Mn0.94Ni0.19O3；
6) manganese acetate and rich lithium material Li1.87Mn0.94Ni0.19O3In ethanol, mix ultrasonic 20-40 minute; Wherein manganese acetate and rich lithium material Li1.87Mn0.94Ni0.19O3Mol ratio be 1:14-16;
7) mill-drying, then continues to add ethanol, then mill-drying, circulates 8-12 time according to this;
8), in air atmosphere, sintering 4-6 hour at 700-800 DEG C, obtains the surface coated rich lithium material Li of Spinel1.87Mn0.94Ni0.19O3。
As preferred version, in step 1), the mol ratio of manganese nitrate and nickel nitrate is 5:1.
As preferred version, step 2) in, the concentration of sodium carbonate liquor equates with the total concentration of manganese ion and nickel ion.
As preferred version, in step 4), in air atmosphere, sintering 5 hours at 500 DEG C.
As preferred version, in step 5), in air atmosphere, sintering 12 hours at 900 DEG C.
As preferred version, in step 6), manganese acetate and rich lithium material Li1.87Mn0.94Ni0.19O3Mol ratio be 1:15.
As preferred version, in step 8), in air atmosphere, sintering 5 hours at 750 DEG C.
The surface coated rich lithium material Li of described Spinel1.87Mn0.94Ni0.19O3As the application of anode material for lithium-ion batteries.
Beneficial effect of the present invention is:
The invention provides a kind of new material as lithium battery anode, that is, and the surface coated rich lithium material Li of Spinel1.87Mn0.94Ni0.19O3. The preparation method of this material is simple, and mild condition is controlled, and evenly coated, coated thickness is 2-2.5 nanometer.
The Spinel superficial layer that the present invention obtains can effectively slow down electrolyte and the direct of lithium-rich anode material contacts, and reduces the destruction of electrolyte to rich lithium material surface, thereby improves the cyclical stability of material under 1C high magnification.
The surface coated rich lithium material Li of Spinel1.87Mn0.94Ni0.19O3During as positive electrode, can further promote every gram of lithium coin cells 1C(250 milliampere) stability under high magnification, ensure higher specific capacity simultaneously. Under 1C multiplying power, stable circulation performance has been brought up to more than 200 times at present, keeps capacity about every gram of 180 MAH simultaneously.
In addition, the surface coated rich lithium material Li of Spinel1.87Mn0.94Ni0.19O3During as positive electrode, under lithium coin cells 0.1C multiplying power, first circulation specific discharge capacity is every gram of 105 MAH; And not coated rich lithium material Li1.87Mn0.94Ni0.19O3During as positive electrode, lithium coin cells is under 0.1C multiplying power, and first circulation specific discharge capacity is every gram of 76 MAH; The former first discharge specific capacity is high.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the surface coated rich lithium material Li of Spinel of the present invention1.87Mn0.94Ni0.19O3Transmission electron microscope (TEM) figure;
Fig. 2 is the surface coated rich lithium material Li of Spinel of the present invention1.87Mn0.94Ni0.19O3Another transmission electron microscope (TEM) figure;
Fig. 3 is the surface coated rich lithium material Li of Spinel1.87Mn0.94Ni0.19O3During as positive electrode, lithium coin cells in the time of 0.1C and 1C, the graph of a relation of cycle-index and specific discharge capacity.
Detailed description of the invention
Embodiment 1
The surface coated rich lithium material Li of a kind of Spinel1.87Mn0.94Ni0.19O3, comprise rich lithium material and be coated on the outer field Spinel clad of rich lithium material; Described rich lithium material is made up of Li element, Mn element, Ni element and O element, and the mol ratio of described Li element, Mn element, Ni element and O element is 1.87:0.94:0.19:3; Described Spinel clad is galaxite.
The surface coated rich lithium material Li of described Spinel1.87Mn0.94Ni0.19O3Preparation method, comprise step:
1) the mixed solution 100ml of preparation manganese nitrate and nickel nitrate, the mol ratio of manganese nitrate and nickel nitrate is 5:1, in mixed solution, the total concentration of manganese ion and nickel ion is 0.2mol/L;
2) in mixture, add gradually 100ml sodium carbonate liquor, the concentration of sodium carbonate liquor is 0.2mol/L;
3) stir 20 hours, obtain the mixed carbonate sediment of nickel and manganese;
4) isolate mixed carbonate sediment, at 110 DEG C dry 24 hours, then in air atmosphere, sintering 5 hours at 500 DEG C, obtained the mixed oxide of nickel and manganese;
5) mixed oxide of nickel and manganese is evenly mixed according to mass ratio 1:1.1 with lithium hydroxide, then, at 900 DEG C, sintering 12 hours in air atmosphere, obtains rich lithium material Li1.87Mn0.94Ni0.19O3；
6) manganese acetate and rich lithium material Li1.87Mn0.94Ni0.19O3In ethanol, mix ultrasonic 30 minutes; Wherein manganese acetate and rich lithium material Li1.87Mn0.94Ni0.19O3Mol ratio be 1:15;
7) mill-drying, then continues to add ethanol, then mill-drying, circulates according to this 10 times;
8), in air atmosphere, sintering 5 hours at 750 DEG C, obtains the surface coated rich lithium material Li of Spinel1.87Mn0.94Ni0.19O3。
Wherein, in step 5), lithium is excessive, to supplement the volatilization under its high temperature.
As shown in Figure 1 and Figure 2, all can see one deck crystal of the about 2-2.5 nanometer thickness of material surface along different crystal faces, its lattice has significant difference with lattice arrangement and the interplanar distance of body phase, that is to say, the thickness of surperficial Spinel clad is approximately 2-2.5 nanometer.
With the surface coated rich lithium material Li of Spinel1.87Mn0.94Ni0.19O3As positive electrode, make lithium ion button shape cell, and carry out performance test.
As shown in Figure 3, the surface coated rich lithium material Li of Spinel1.87Mn0.94Ni0.19O3During as positive electrode, can further promote every gram of lithium coin cells 1C(250 milliampere) stability under high magnification, keep higher discharge capacity simultaneously. Under 1C multiplying power, stable circulation performance has been brought up to more than 200 times at present, keeps capacity about every gram of 180 MAH simultaneously; Under 0.1C multiplying power, first circulation specific discharge capacity is every gram of 105 MAH.
With not coated rich lithium material Li1.87Mn0.94Ni0.19O3As positive electrode, make lithium ion button shape cell, and carry out performance test.
Embodiment 2
The surface coated rich lithium material Li of a kind of Spinel1.87Mn0.94Ni0.19O3, comprise rich lithium material and be coated on the outer field Spinel clad of rich lithium material; Described rich lithium material is made up of Li element, Mn element, Ni element and O element, and the mol ratio of described Li element, Mn element, Ni element and O element is 1.87:0.94:0.19:3; Described Spinel clad is galaxite.
The surface coated rich lithium material Li of described Spinel1.87Mn0.94Ni0.19O3Preparation method, comprise step:
1) the mixed solution 100ml of preparation manganese nitrate and nickel nitrate, the mol ratio of manganese nitrate and nickel nitrate is 4.9:1, in mixed solution, the total concentration of manganese ion and nickel ion is 0.25mol/L;
2) in mixture, add gradually 100ml sodium carbonate liquor, the concentration of sodium carbonate liquor is 0.25mol/L;
3) stir 20 hours, obtain the mixed carbonate sediment of nickel and manganese;
4) isolate mixed carbonate sediment, at 110 DEG C dry 24 hours, then in air atmosphere, sintering 5 hours at 500 DEG C, obtained the mixed oxide of nickel and manganese;
5) mixed oxide of nickel and manganese is evenly mixed according to mass ratio 1:1.078 with lithium hydroxide, then, at 900 DEG C, sintering 12 hours in air atmosphere, obtains rich lithium material Li1.87Mn0.94Ni0.19O3；
6) manganese acetate and rich lithium material Li1.87Mn0.94Ni0.19O3In ethanol, mix ultrasonic 40 minutes; Wherein manganese acetate and rich lithium material Li1.87Mn0.94Ni0.19O3Mol ratio be 1:16;
7) mill-drying, then continues to add ethanol, then mill-drying, circulates according to this 12 times;
8), in air atmosphere, sintering 6 hours at 700 DEG C, obtains the surface coated rich lithium material Li of Spinel1.87Mn0.94Ni0.19O3。
Wherein, in step 5), lithium is excessive, to supplement the volatilization under its high temperature.
Embodiment 3
The surface coated rich lithium material Li of a kind of Spinel1.87Mn0.94Ni0.19O3, comprise rich lithium material and be coated on the outer field Spinel clad of rich lithium material; Described rich lithium material is made up of Li element, Mn element, Ni element and O element, and the mol ratio of described Li element, Mn element, Ni element and O element is 1.87:0.94:0.19:3; Described Spinel clad is galaxite.
The surface coated rich lithium material Li of described Spinel1.87Mn0.94Ni0.19O3Preparation method, comprise step:
1) the mixed solution 100ml of preparation manganese nitrate and nickel nitrate, the mol ratio of manganese nitrate and nickel nitrate is 5.1:1, in mixed solution, the total concentration of manganese ion and nickel ion is 0.2mol/L;
2) in mixture, add gradually 100ml sodium carbonate liquor, the concentration of sodium carbonate liquor is 0.2mol/L;
3) stir 20 hours, obtain the mixed carbonate sediment of nickel and manganese;
4) isolate mixed carbonate sediment, at 110 DEG C dry 24 hours, then in air atmosphere, sintering 5 hours at 500 DEG C, obtained the mixed oxide of nickel and manganese;
5) mixed oxide of nickel and manganese is evenly mixed according to mass ratio 1:1.122 with lithium hydroxide, then, at 900 DEG C, sintering 12 hours in air atmosphere, obtains rich lithium material Li1.87Mn0.94Ni0.19O3；
6) manganese acetate and rich lithium material Li1.87Mn0.94Ni0.19O3In ethanol, mix ultrasonic 20-40 minute; Wherein manganese acetate and rich lithium material Li1.87Mn0.94Ni0.19O3Mol ratio be 1:14;
7) mill-drying, then continues to add ethanol, then mill-drying, circulates according to this 8 times;
8), in air atmosphere, sintering 4 hours at 800 DEG C, obtains the surface coated rich lithium material Li of Spinel1.87Mn0.94Ni0.19O3。
Wherein, in step 5), lithium is excessive, to supplement the volatilization under its high temperature.
Claims (10)
1. the surface coated rich lithium material Li of Spinel1.87Mn0.94Ni0.19O3, it is characterized in that: comprise rich lithium material and be coated on the outer field Spinel clad of rich lithium material; Described rich lithium material is made up of Li element, Mn element, Ni element and O element, and the mol ratio of described Li element, Mn element, Ni element and O element is 1.87:0.94:0.19:3; Described Spinel clad is galaxite.
2. the surface coated rich lithium material Li of Spinel as described in requiring 1 as weighed1.87Mn0.94Ni0.19O3, it is characterized in that: the thickness of described Spinel clad is 2-2.5nm.
3. the surface coated rich lithium material Li of Spinel as claimed in claim 11.87Mn0.94Ni0.19O3Preparation method, it is characterized in that, comprise step:
1) mixed solution of preparation manganese nitrate and nickel nitrate, the mol ratio of manganese nitrate and nickel nitrate is 4.9-5.1:1, in mixed solution, the total concentration of manganese ion and nickel ion is 0.2-0.25mol/L;
2) in mixture, add gradually sodium carbonate liquor, the concentration of sodium carbonate liquor is 0.2-0.25mol/L, add carbonate in carbon acid solution molal quantity equate with manganese ion and nickel ion molal quantity summation;
3) stir 15-25 hour, obtain the mixed carbonate sediment of nickel and manganese;
4) isolate mixed carbonate sediment, dry 20-28 hour at 105-120 DEG C, then in air atmosphere, sintering 4-6 hour at 470-530 DEG C, obtains the mixed oxide of nickel and manganese;
5) mixed oxide of nickel and manganese is evenly mixed according to mass ratio 1:1.078-1.122 with lithium hydroxide, then, at 850-950 DEG C, sintering 11-13 hour in air atmosphere, obtains rich lithium material Li1.87Mn0.94Ni0.19O3；
6) manganese acetate and rich lithium material Li1.87Mn0.94Ni0.19O3In ethanol, mix ultrasonic 20-40 minute; Wherein manganese acetate and rich lithium material Li1.87Mn0.94Ni0.19O3Mol ratio be 1:14-16;
7) mill-drying, then continues to add ethanol, then mill-drying, circulates 8-12 time according to this;
8), in air atmosphere, sintering 4-6 hour at 700-800 DEG C, obtains the surface coated rich lithium material Li of Spinel1.87Mn0.94Ni0.19O3。
4. the surface coated rich lithium material Li of Spinel as claimed in claim 31.87Mn0.94Ni0.19O3Preparation method, it is characterized in that: in step 1), the mol ratio of manganese nitrate and nickel nitrate is 5:1.
5. the surface coated rich lithium material Li of Spinel as claimed in claim 31.87Mn0.94Ni0.19O3Preparation method, it is characterized in that: step 2) in, the concentration of sodium carbonate liquor equates with the total concentration of manganese ion and nickel ion.
6. the surface coated rich lithium material Li of Spinel as claimed in claim 31.87Mn0.94Ni0.19O3Preparation method, it is characterized in that: in step 4), in air atmosphere, sintering 5 hours at 500 DEG C.
7. the surface coated rich lithium material Li of Spinel as claimed in claim 31.87Mn0.94Ni0.19O3Preparation method, it is characterized in that: in step 5), in air atmosphere, sintering 12 hours at 900 DEG C.
8. the surface coated rich lithium material Li of Spinel as claimed in claim 31.87Mn0.94Ni0.19O3Preparation method, it is characterized in that: in step 6), manganese acetate and rich lithium material Li1.87Mn0.94Ni0.19O3Mol ratio be 1:15.
9. the surface coated rich lithium material Li of Spinel as claimed in claim 31.87Mn0.94Ni0.19O3Preparation method, it is characterized in that: in step 8), in air atmosphere, sintering 5 hours at 750 DEG C.
10. the surface coated rich lithium material Li of Spinel as claimed in claim 11.87Mn0.94Ni0.19O3As the application of anode material for lithium-ion batteries.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107394156A (en) * | 2017-07-19 | 2017-11-24 | 长沙矿冶研究院有限责任公司 | A kind of method of modifying and its modified anode material of the lithium-rich manganese-based anode material for lithium-ion batteries based on organic matter ammoniacal liquor |
| CN107978735A (en) * | 2016-10-24 | 2018-05-01 | 纳米及先进材料研发院有限公司 | Spinel lithium manganese oxide and its manufacture method |
| CN112803022A (en) * | 2020-12-31 | 2021-05-14 | 国联汽车动力电池研究院有限责任公司 | Surface structure spinel-rock salt phase integrated lithium-rich material and preparation method thereof |
| US11495796B2 (en) | 2018-11-14 | 2022-11-08 | Samsung Sdi Co., Ltd. | Positive active material for rechargeable lithium battery, method of preparing the same and rechargeable lithium battery including the same |
| US11757092B2 (en) * | 2018-11-15 | 2023-09-12 | Samsung Sdi Co., Ltd. | Positive active material for rechargeable lithium battery, method of preparing the same and rechargeable lithium battery including the same |
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| WO2012105048A1 (en) * | 2011-02-04 | 2012-08-09 | トヨタ自動車株式会社 | Coated active material, battery, and method for producing coated active material |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978735A (en) * | 2016-10-24 | 2018-05-01 | 纳米及先进材料研发院有限公司 | Spinel lithium manganese oxide and its manufacture method |
| CN107394156A (en) * | 2017-07-19 | 2017-11-24 | 长沙矿冶研究院有限责任公司 | A kind of method of modifying and its modified anode material of the lithium-rich manganese-based anode material for lithium-ion batteries based on organic matter ammoniacal liquor |
| US11495796B2 (en) | 2018-11-14 | 2022-11-08 | Samsung Sdi Co., Ltd. | Positive active material for rechargeable lithium battery, method of preparing the same and rechargeable lithium battery including the same |
| US11757092B2 (en) * | 2018-11-15 | 2023-09-12 | Samsung Sdi Co., Ltd. | Positive active material for rechargeable lithium battery, method of preparing the same and rechargeable lithium battery including the same |
| CN112803022A (en) * | 2020-12-31 | 2021-05-14 | 国联汽车动力电池研究院有限责任公司 | Surface structure spinel-rock salt phase integrated lithium-rich material and preparation method thereof |
| CN112803022B (en) * | 2020-12-31 | 2022-05-06 | 国联汽车动力电池研究院有限责任公司 | Surface structure spinel-rock salt phase integrated lithium-rich material and preparation method thereof |
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| CN105609718B (en) | 2018-03-30 |
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