CN104766969A - Method for preparing cathode material of lithium ion battery - Google Patents
Method for preparing cathode material of lithium ion battery Download PDFInfo
- Publication number
- CN104766969A CN104766969A CN201510202477.2A CN201510202477A CN104766969A CN 104766969 A CN104766969 A CN 104766969A CN 201510202477 A CN201510202477 A CN 201510202477A CN 104766969 A CN104766969 A CN 104766969A
- Authority
- CN
- China
- Prior art keywords
- lithium
- rich
- gradient material
- fgm
- nickel
- 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.)
- Granted
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
- H01M4/48—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
- 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
- H01M4/52—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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a method for preparing a cathode material of a lithium ion battery. The method for preparing the cathode material of the lithium ion battery comprises the steps that a gradient material precursor is prepared by means of soluble nickel salt, manganese salt, cobalt salt and a small amount of ammonia water according to the ultrasonic microwave-assisted coprecipitation method, wherein a nickel-rich material is taken as the core of the gradient material precursor and the nickel proportion of the gradient material precursor becomes smaller gradually towards the periphery with the core as the center; the obtained gradient material precursor is mixed with a certain quantity of lithium source; a lithium-rich gradient material is obtained after microwave heating is conducted on the material obtained after mixing; the lithium-rich gradient material heated through microwaves is dispersed by means of ultrasonic waves, a purified phenylamine or pyrrole monomer is added to the dispersed lithium-rich gradient material, a certain amount of oxidizing agent is further added, and a lithium-rich gradient material wrapped by a nanoscale conductive polymer membrane is obtained after strong stirring is conducted for a certain period of time. The cathode material prepared with the method has the advantages that the rate capability is excellent, the cycle performance is good, and the defects of conventional lithium-rich materials can be effectively overcome.
Description
Technical field
The present invention relates to technical field of lithium ion, particularly relate to a kind of preparation method of cathode material for lithium ion battery.
Background technology
The performance of power lithium-ion battery depends on electrode material and electrolyte, and current research shows, performance and the price of lithium ion battery in the performance of cathode material and price decision.Traditional cathode material for lithium ion battery cobalt acid lithium (LiCoO
2), LiFePO4 (LiFePO
4) and spinel structure LiMn2O4 (LiMn
2o
4), their specific capacity is at 200mAh.g
-1below, relative to being stabilized in 350mAh.g
-1above carbon negative pole material, the low capacity of positive electrode is apparent becomes the barrier suppressing batteries of electric automobile to increase course continuation mileage, and development of new positive electrode is extremely urgent.In addition, while guarantee cell high-capacity, high security is also the major issue that must consider.
In prior art, xLi
2mnO
3(1-x) LiMO
2class rich lithium manganese base solid solution (wherein M is transition metal) can provide more than 230mAh.g
-1specific capacity, and can occur charging platform at about 4.5V, this feature makes material can present higher energy density, by the transiting metal component in reasonably optimizing lithium-rich manganese base material and ratio, can prepare specific discharge capacity close to 300mAh.g
-1positive electrode, its energy density even can reach 900Wh.kg
-1, but at present rich lithium manganese base solid solution also runs into a lot of problem in actual applications, and such as cycle performance is not good, high rate performance is not good and the problem such as poor stability.
Summary of the invention
The object of this invention is to provide a kind of preparation method of cathode material for lithium ion battery, the cathode material utilizing this preparation method to obtain has high rate performance excellence, the feature of good cycle, effectively can improve the defect of conventional rich lithium material.
A preparation method for cathode material for lithium ion battery, described method comprises:
Utilize the nickel salt of solubility, manganese salt, cobalt salt and a small amount of ammoniacal liquor, adopt ultrasonic-microwave aid coprecipitation method to prepare with rich nickel material for core, and reduce the functionally gradient material (FGM) presoma of nickel ratio gradually to extension centered by core;
Obtained functionally gradient material (FGM) presoma is mixed with a certain amount of lithium source; Described lithium source is (1.2+a) with the content ratio of metallic element in described functionally gradient material (FGM) presoma: 0.8, wherein-0.05≤a≤0.2;
Rich lithium functionally gradient material (FGM) is obtained after adopting microwave to heat mixed material; Wherein, microwave heating time is 10min-5h, and microwave intensity adopts 300W-900W, and sintering atmosphere adopts aerobic environment;
Again the rich lithium functionally gradient material (FGM) after microwave heating is adopted ultrasonic wave dispersion, add the aniline after purifying or pyrrole monomer, and add a certain amount of oxidant, after strong stirring certain hour, obtain the rich lithium functionally gradient material (FGM) being coated with nano-level conducting polymeric membrane.
As seen from the above technical solution provided by the invention, the cathode material utilizing this preparation method to obtain has high rate performance excellence, the feature of good cycle, effectively can improve the defect of conventional rich lithium material.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Preparation method's schematic flow sheet of the cathode material for lithium ion battery that Fig. 1 provides for the embodiment of the present invention;
Figure 2 shows that the charge-discharge performance schematic diagram of the cathode material prepared by the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection scope of the present invention.
Be described in further detail the embodiment of the present invention below in conjunction with accompanying drawing, be illustrated in figure 1 preparation method's schematic flow sheet of the cathode material for lithium ion battery that the embodiment of the present invention provides, described method comprises:
Step 11: utilize the nickel salt of solubility, manganese salt, cobalt salt and a small amount of ammoniacal liquor, adopts ultrasonic-microwave aid coprecipitation method to prepare with rich nickel material for core, and reduce the functionally gradient material (FGM) presoma of nickel ratio gradually to extension centered by core;
In this step, in described functionally gradient material (FGM) presoma, the content ratio of the nickel of rich nickel core, manganese, cobalt is (0.8-x): (0.2-y): (x+y), and the content ratio of the nickel of rich manganese shell, manganese, cobalt is (0.8-x-z): (0.2-y+z): (x+y);
Wherein, the value of x is 0≤x≤0.8, and the value of y is 0≤y≤0.2, and the value of z is 0≤z≤0.8.
In addition, in preparation process, introduce ultrasonic-microwave device can improve dispersion of materials degree, to reduce the generated time of material, simultaneously in the process adopting ultrasonic-microwave aid coprecipitation method:
The temperature of microwave heating is 40 ~ 70 DEG C, and the time of coprecipitation reaction is 0.5h ~ 10h, and is between 6 ~ 8 by the pH value of ammoniacal liquor regulation and control reaction.
Above-mentioned soluble nickel salt, manganese salt, cobalt salt are all solubilized salt forms of nickel, manganese, cobalt.
Step 12: obtained functionally gradient material (FGM) presoma is mixed with a certain amount of lithium source;
In this step, the lithium source adopted comprises LiOH, LiNO
3, CH
3cOOLi and Li
2cO
3in one or more, and the content of described lithium source and metallic element in described functionally gradient material (FGM) presoma is than being (1.2+a): 0.8, wherein-0.05≤a≤0.2.
Step 13: obtain rich lithium functionally gradient material (FGM) after adopting microwave to heat mixed material;
In this step, microwave heating time is 10min-5h, and microwave intensity adopts 300W-900W, and sintering atmosphere adopts aerobic environment.
Step 14: the richer lithium functionally gradient material (FGM) after microwave heating is adopted ultrasonic wave dispersion, add the aniline after purifying or pyrrole monomer, and add a certain amount of oxidant, obtain the rich lithium functionally gradient material (FGM) being coated with nano-level conducting polymeric membrane after strong stirring certain hour.
In this step, be coated with in the rich lithium functionally gradient material (FGM) of nano-level conducting polymeric membrane obtained: the quality of conducting polymer accounts for the 0.02%-5% of rich lithium functionally gradient material (FGM) quality, by this coated process, conductivity and the cycle performance of rich lithium material can be improved further.
The ultrasonic time of above-mentioned ultrasonic wave dispersion is 0.5h-5h, and the time of strong stirring is 2h-8h; The oxidant added is one or more in potassium permanganate, sodium thiosulfate and iron chloride.
With concrete example, above-mentioned preparation method is described in detail below:
Embodiment 1, by nickel nitrate, manganese nitrate and cobalt nitrate according to nickel: manganese: cobalt is that the ratio of 0.7:0.2:0.1 joins on the device of accompanying drawing 1 respectively, add ammoniacal liquor carry out regulate and control reaction pH be 7.Along with reaction is constantly carried out, being regulated and controled the addition of various metallic solution by valve shown in figure, after reaction 2h, is 0.2:0.7:0.1 by the proportion adjustment of nickel, manganese and cobalt, stops adding metallic solution and ammoniacal liquor.Reaction is stopped after continuing reaction 1h.
By obtain filtration of material, drying, obtain persursor material.
The persursor material obtained is mixed with lithium hydroxide, wherein Li: the ratio of metal is 1.2:0.8.Mixed material is placed in microwave atmosphere, passes into oxygen, under 500W microwave intensity, heat 3h, obtains rich lithium functionally gradient material (FGM).
Embodiment 2, by nickelous sulfate, manganese sulfate and cobaltous sulfate according to nickel: manganese: cobalt is that the ratio of 0.7:0.1:0.2 joins on the device of accompanying drawing 1 respectively, add ammoniacal liquor carry out regulate and control reaction pH be 7.Along with reaction is constantly carried out, being regulated and controled the addition of various metallic solution by valve shown in figure, after reaction 2h, is 0.1:0.7:0.2 by the proportion adjustment of nickel, manganese and cobalt, stops adding metallic solution and ammoniacal liquor.Reaction is stopped after continuing reaction 1h.
By obtain filtration of material, drying, obtain persursor material.
The persursor material obtained is mixed with lithium hydroxide, wherein Li: the ratio of metal is 1.25:0.8.Mixed material is placed in microwave atmosphere, passes into oxygen, under 600W microwave intensity, heat 4h, obtains rich lithium functionally gradient material (FGM).
The rich lithium functionally gradient material (FGM) ultrasonic disperse 1h obtained, adds the aniline monomer after purifying afterwards, continues ultrasonic limit, limit and adds oxidant sodium thiosulfate, after adding, stop ultrasonic, strong stirring 3h, obtains the rich lithium functionally gradient material (FGM) of polyaniline-coated.
Embodiment 3, by nickel acetate, manganese acetate and cobalt acetate according to nickel: manganese: cobalt is that the ratio of 0.7:0.1:0.2 joins on the device of accompanying drawing 1 respectively, add ammoniacal liquor carry out regulate and control reaction pH be 6.5.Along with reaction is constantly carried out, being regulated and controled the addition of various metallic solution by valve shown in figure, after reaction 3h, is 0.1:0.7:0.2 by the proportion adjustment of nickel, manganese and cobalt, stops adding metallic solution and ammoniacal liquor.Reaction is stopped after continuing reaction 2h.
By obtain filtration of material, drying, obtain persursor material.
The persursor material obtained is mixed with lithium hydroxide, wherein Li: the ratio of metal is 1.3:0.8.Mixed material is placed in microwave atmosphere, passes into oxygen, under 800W microwave intensity, heat 1.5h, obtains rich lithium functionally gradient material (FGM).
The rich lithium functionally gradient material (FGM) ultrasonic disperse 1h obtained, adds the pyrrole monomer after purifying afterwards, continues ultrasonic limit, limit and adds oxidant iron chloride, after adding, stop ultrasonic, strong stirring 4h, obtain the coated rich lithium functionally gradient material (FGM) of polypyrrole.
Be illustrated in figure 2 the charge-discharge performance schematic diagram of the cathode material prepared by the embodiment of the present invention, as can be seen from Figure 2: the cathode material utilizing this preparation method to obtain has high rate performance excellence, the feature of good cycle, effectively can improve the defect of conventional rich lithium material.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (6)
1. a preparation method for cathode material for lithium ion battery, is characterized in that, described method comprises:
Utilize the nickel salt of solubility, manganese salt, cobalt salt and a small amount of ammoniacal liquor, adopt ultrasonic-microwave aid coprecipitation method to prepare with rich nickel material for core, and reduce the functionally gradient material (FGM) presoma of nickel ratio gradually to extension centered by core;
Obtained functionally gradient material (FGM) presoma is mixed with a certain amount of lithium source; Described lithium source is (1.2+a) with the content ratio of metallic element in described functionally gradient material (FGM) presoma: 0.8, wherein-0.05≤a≤0.2;
Rich lithium functionally gradient material (FGM) is obtained after adopting microwave to heat mixed material; Wherein, microwave heating time is 10min-5h, and microwave intensity adopts 300W-900W, and sintering atmosphere adopts aerobic environment;
Again the rich lithium functionally gradient material (FGM) after microwave heating is adopted ultrasonic wave dispersion, add the aniline after purifying or pyrrole monomer, and add a certain amount of oxidant, after strong stirring certain hour, obtain the rich lithium functionally gradient material (FGM) being coated with nano-level conducting polymeric membrane.
2. the preparation method of cathode material for lithium ion battery according to claim 1, is characterized in that,
In described functionally gradient material (FGM) presoma, the content ratio of the nickel of rich nickel core, manganese, cobalt is (0.8-x): (0.2-y): (x+y), and the content ratio of the nickel of rich manganese shell, manganese, cobalt is (0.8-x-z): (0.2-y+z): (x+y);
Wherein, the value of x is 0≤x≤0.8, and the value of y is 0≤y≤0.2, and the value of z is 0≤z≤0.8.
3. the preparation method of cathode material for lithium ion battery according to claim 1, is characterized in that, in the process adopting ultrasonic-microwave aid coprecipitation method:
The temperature of microwave heating is 40 ~ 70 DEG C, and the time of coprecipitation reaction is 0.5h ~ 10h, and is between 6 ~ 8 by the pH value of ammoniacal liquor regulation and control reaction.
4. the preparation method of cathode material for lithium ion battery according to claim 1, is characterized in that,
The lithium source adopted comprises LiOH, LiNO
3, CH
3cOOLi and Li
2cO
3in one or more.
5. the preparation method of cathode material for lithium ion battery according to claim 1, is characterized in that,
Be coated with in the rich lithium functionally gradient material (FGM) of nano-level conducting polymeric membrane obtained: the quality of conducting polymer accounts for the 0.02%-5% of rich lithium functionally gradient material (FGM) quality;
And the ultrasonic time of ultrasonic wave dispersion is 0.5h-5h, the time of strong stirring is 2h-8h.
6. the preparation method of cathode material for lithium ion battery according to claim 1 or 5, is characterized in that,
The oxidant added is one or more in potassium permanganate, sodium thiosulfate and iron chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510202477.2A CN104766969B (en) | 2015-04-23 | 2015-04-23 | Method for preparing cathode material of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510202477.2A CN104766969B (en) | 2015-04-23 | 2015-04-23 | Method for preparing cathode material of lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104766969A true CN104766969A (en) | 2015-07-08 |
| CN104766969B CN104766969B (en) | 2017-05-10 |
Family
ID=53648685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510202477.2A Active CN104766969B (en) | 2015-04-23 | 2015-04-23 | Method for preparing cathode material of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104766969B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359319A (en) * | 2017-05-27 | 2017-11-17 | 中国电力科学研究院 | A kind of lithium-rich manganese-based layered cathode material and preparation method thereof |
| CN108269992A (en) * | 2016-12-30 | 2018-07-10 | 北京当升材料科技股份有限公司 | A kind of composite anode material of high-capacity lithium ion battery and preparation method thereof |
| CN108598436A (en) * | 2018-05-03 | 2018-09-28 | 中南大学 | The positive electrode and preparation method thereof that conducting polymer and manganese dioxide coat altogether |
| CN110078136A (en) * | 2019-05-08 | 2019-08-02 | 李文明 | A method of preparing lithium ion battery transition metal anode functionally gradient material (FGM) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060105239A1 (en) * | 2002-10-31 | 2006-05-18 | Paulsen Jens M | Lithium transition metal oxide with gradient of metal composition |
| CN102214819A (en) * | 2010-04-09 | 2011-10-12 | 北京化工大学 | Method for manufacturing cobalt nickel lithium manganate oxide as gradient anode active material of lithium ion battery |
| KR20130058342A (en) * | 2011-11-25 | 2013-06-04 | 에스케이씨 주식회사 | Precursor of cathode active material for lithium secondary battery and preparation method thereof |
| CN104332619A (en) * | 2014-09-22 | 2015-02-04 | 上海中聚佳华电池科技有限公司 | Polypyrrole- coated full-gradient cathode material and preparation method thereof |
| CN104347853A (en) * | 2014-09-24 | 2015-02-11 | 秦皇岛中科远达电池材料有限公司 | Lithium manganate composite positive electrode material, a preparing method thereof and a lithium-ion battery |
-
2015
- 2015-04-23 CN CN201510202477.2A patent/CN104766969B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060105239A1 (en) * | 2002-10-31 | 2006-05-18 | Paulsen Jens M | Lithium transition metal oxide with gradient of metal composition |
| CN102214819A (en) * | 2010-04-09 | 2011-10-12 | 北京化工大学 | Method for manufacturing cobalt nickel lithium manganate oxide as gradient anode active material of lithium ion battery |
| KR20130058342A (en) * | 2011-11-25 | 2013-06-04 | 에스케이씨 주식회사 | Precursor of cathode active material for lithium secondary battery and preparation method thereof |
| CN104332619A (en) * | 2014-09-22 | 2015-02-04 | 上海中聚佳华电池科技有限公司 | Polypyrrole- coated full-gradient cathode material and preparation method thereof |
| CN104347853A (en) * | 2014-09-24 | 2015-02-11 | 秦皇岛中科远达电池材料有限公司 | Lithium manganate composite positive electrode material, a preparing method thereof and a lithium-ion battery |
Non-Patent Citations (1)
| Title |
|---|
| RUIRUI ZHAO ET.AL.: "Ultrasonic/microwave-assisted co-precipitation method", 《MATERIALS LETTERS》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108269992A (en) * | 2016-12-30 | 2018-07-10 | 北京当升材料科技股份有限公司 | A kind of composite anode material of high-capacity lithium ion battery and preparation method thereof |
| CN107359319A (en) * | 2017-05-27 | 2017-11-17 | 中国电力科学研究院 | A kind of lithium-rich manganese-based layered cathode material and preparation method thereof |
| CN108598436A (en) * | 2018-05-03 | 2018-09-28 | 中南大学 | The positive electrode and preparation method thereof that conducting polymer and manganese dioxide coat altogether |
| CN110078136A (en) * | 2019-05-08 | 2019-08-02 | 李文明 | A method of preparing lithium ion battery transition metal anode functionally gradient material (FGM) |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104766969B (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102544475B (en) | Method for preparing lithium-enriched lithium manganese oxide solid solution cathode material | |
| CN102810668B (en) | Lithium ion battery nickel-cobalt-manganese ternary composite anode material and method for preparing precursor thereof | |
| CN103066269B (en) | A kind of ternary positive electrode active material preparation method and battery | |
| CN103311532B (en) | Preparation method of lithium-enriched anode material with nano-grade lamellar-spinel composite structure | |
| CN102983326B (en) | Spherical lithium-nickel-cobalt composite oxide positive electrode material preparation method | |
| CN104852038A (en) | Preparation method of high-capacity quickly-chargeable/dischargeable lithium ion battery ternary anode material | |
| CN106299282B (en) | Nitrogen-doped carbon nanotube sulfur composite material and preparation method thereof | |
| CN108493435B (en) | Lithium ion battery anode material Li (Ni)0.8Co0.1Mn0.1)1-xYxO2And preparation method | |
| CN106374099A (en) | Flexible self-supporting lithium-rich manganese-based cathode for lithium ion battery and preparation method thereof | |
| CN105390666B (en) | A kind of mixed lithium method in lithium ion anode material building-up process | |
| CN104393277A (en) | Ternary material coated with metal oxide on surface and used for lithium ion battery, and preparation method of ternary material | |
| CN102569773B (en) | Anode material for lithium-ion secondary battery and preparation method thereof | |
| CN106129360A (en) | A kind of high-tap density lithium-rich manganese-based anode material and preparation method thereof | |
| CN110233261B (en) | Preparation method of single crystal ternary lithium battery positive electrode material and lithium ion battery | |
| CN104953110A (en) | Rich-lithium-manganese-based cathode material used for lithium ion battery of hollow structure and preparation method thereof | |
| CN106025208A (en) | Preparation method for carbon-coated ternary positive electrode material | |
| CN104157844A (en) | High magnifying power lithium-rich manganese-based cathode material with nano/microstructure | |
| CN104319392A (en) | Modified spinel type lithium battery cathode material and preparation method thereof | |
| CN103928660A (en) | Preparation method of multi-element anode material with multi-level structure | |
| CN103441238A (en) | Mg-doped Li-rich anode material and preparation method for same | |
| CN104766969B (en) | Method for preparing cathode material of lithium ion battery | |
| CN103606700A (en) | Lithium ion battery with good charge and discharge performance | |
| CN103413935A (en) | Mo-doped lithium-rich positive electrode material and preparation method thereof | |
| CN105977462A (en) | Preparation method of lithium-rich manganese-based positive electrode material with hollow structure | |
| CN106328923A (en) | Preparation method of positive electrode material of lithium battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201029 Address after: Room 3237, No. 39, Tangkang Road, Chongxian street, Yuhang District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou ruisai Kelun Technology Co.,Ltd. Address before: 510006 Guangdong city of Guangzhou province Panyu Xiaoguwei University City Patentee before: SOUTH CHINA NORMAL University |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230902 Address after: No. 11-5-11, Section 2, Lingang Road, Jialing District, Nanchong City, Sichuan Province, 637901 Patentee after: Sichuan Zhihui New Energy Co.,Ltd. Address before: Room 3237, No. 39 Tangkang Road, Chongxian Street, Yuhang District, Hangzhou City, Zhejiang Province, 311108 Patentee before: Hangzhou ruisai Kelun Technology Co.,Ltd. |