CN106711444A - Preparation method of in situ coating modified NCA cathode material - Google Patents
Preparation method of in situ coating modified NCA cathode material Download PDFInfo
- Publication number
- CN106711444A CN106711444A CN201611077797.0A CN201611077797A CN106711444A CN 106711444 A CN106711444 A CN 106711444A CN 201611077797 A CN201611077797 A CN 201611077797A CN 106711444 A CN106711444 A CN 106711444A
- Authority
- CN
- China
- Prior art keywords
- cathode material
- nickel cobalt
- preparation
- aluminate cathode
- cobalt lithium
- 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.)
- Pending
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
- H01M4/52—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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
-
- 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)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention provides a preparation method of an in situ coating modified NCA cathode material. The method includes the steps of: 1. dissolving a titanium source in anhydrous ethanol to prepare a titanium coating solution; 2. adding a Ni0.80Co0.15Al0.05(OH)2 precursor, a lithium source and a complexing agent into the titanium coating solution, and performing heating stirring at 60-80DEG C to obtain a sol; 3. carrying out drying, grinding and sieving on the sol in order, placing the obtained powder mixture in a resistance furnace to perform sintering at 800-900DEG C for 10-20h, and conducting cooling to obtain a sintered material; and 4. crushing and sieving the sintered material so as to obtain a NCA cathode material coated with Li4Ti5O12 on the surface. The coated material prepared by the method provided by the invention is a lithium-containing compound, adopts Li4Ti5O12 as the coating layer, and can greatly improve the cycle performance under the premise of not significantly affecting the capacity of the NCA cathode material.
Description
Technical field
The invention belongs to battery material preparing technical field, and in particular to a kind of modified nickel cobalt lithium aluminate of in-stiu coating is just
The preparation method of pole material.
Background technology
Lithium ion battery has been widely used in the equipment such as small-sized electronic product and electric automobile, and its performance mainly depends on
In positive electrode.Therefore, develop that energy density is high and constitutionally stable positive electrode turns into focus of concern.Wherein,
Nickel cobalt lithium aluminate cathode material（NCA positive electrodes）Reversible capacity close to 200 mAh/g, be at present commercialization positive electrode in
Specific capacity highest material.
But the most fatal shortcoming of NCA positive electrodes is easily to absorb water, exposure in atmosphere can quickly with water and CO2Reaction,
LiOH and LiCO is formed in particle surface3Impurity, raises the however, residual base of material, has a strong impact on its processing characteristics.In discharge and recharge
During, there is side reaction and discharge gas in the HF in however, residual base and electrolyte, substantially reduce again battery cyclical stability and
Security.Therefore, NCA positive electrodes need to increase the methods such as aftertreatment technology such as Surface coating to reduce the generation of side reaction.Mesh
Preceding conventional coating is TiO2、Al2O3, the metal oxide such as MgO, although material interface stability after modified is obtained
Improve, but these cladding materials are in itself electrochemicaUy inert material, not only hinder the migration of lithium ion, and reduce NCA
The specific capacity of material；Conventional method for coating is and first prepare NCA positive electrodes in addition, then is coated, increased operation and
Cost.
The content of the invention
For upper above-mentioned technical problem, the present invention proposes a kind of system of the modified nickel cobalt lithium aluminate cathode material of in-stiu coating
Preparation Method, on the premise of not increasing preparation section, not reducing material specific capacity, prepares Surface coating Li4Ti5O12Nickel cobalt
Lithium aluminate cathode material so that the positive electrode for regenerating has good multiplying power and cycle performance.
A kind of preparation method of the modified nickel cobalt lithium aluminate cathode material of in-stiu coating, comprises the following steps：
Step 1, titanium source is dissolved in absolute ethyl alcohol, prepares titanium covering liquid；
Step 2, by Ni0.80Co0.15Al0.05(OH)2Presoma, lithium source and complexing agent are added in above-mentioned titanium covering liquid, and in 60-
Heating stirring obtains colloidal sol at 80 DEG C；
Step 3, above-mentioned colloidal sol is placed in resistance furnace 800 through drying, grinding and sieving gained powder mixing material successively ~
10 ~ 20h is sintered at 900 DEG C, sintering feed is obtained after cooling；
Step 4, above-mentioned sintering feed is crushed, is sieved, and obtains Surface coating Li4Ti5O12Nickel cobalt lithium aluminate cathode material.
Titanium source is the one kind in butyl titanate, titanium tetrachloride or tetraisopropyl titanate in the step 1.
Lithium source is the one kind in lithium carbonate, lithium hydroxide, lithium nitrate or lithium acetate in the step 2.
Step 2 complexing agent is the one or more combination in citric acid, glacial acetic acid or ammoniacal liquor.
Surface cover Li in the step 44Ti5O12Quality account for Surface coating Li4Ti5O12Nickel cobalt lithium aluminate positive pole
The 0.5-3 wt.% of quality of materials.
Beneficial effects of the present invention：
Li4Ti5O12It is spinel structure, the characteristic with three-dimensional lithium ion mobility, this material has good high rate performance.And
And Li4Ti5O12A kind of zero strain material, i.e., the covering material that during the insertion and deintercalation of lithium ion prepared by the present invention
（Call covering material in the following text）Structure do not change, therefore the covering material has prominent structural stability can.Other this hair
The covering material of bright preparation is lithium-containing compound, with Li4Ti5O12As clad, nickel cobalt lithium aluminate can not significantly affected just
On the premise of the material capacity of pole, its cycle performance is increased substantially.
Brief description of the drawings
Fig. 1 is Surface coating Li prepared by embodiment 14Ti5O12Nickel cobalt lithium aluminate cathode material XRD；
Fig. 2 is Surface coating Li prepared by embodiment 14Ti5O12Nickel cobalt lithium aluminate cathode material cyclic curve.
Specific embodiment
Embodiment 1
26.5g butyl titanates are taken to be dissolved in 2L absolute ethyl alcohols and stir 10min.To adding 500g in solution
Ni0.80Co0.15Al0.05(OH)2Presoma, 245g LiOHH2O and 15g citric acids, heating stirring obtains colloidal sol at 60 DEG C.
Colloidal sol is placed in air dry oven 110 DEG C and dries 12h, 300 eye mesh screens are crossed after grinding.Material after sieving is placed in resistance
12h is incubated in 850 DEG C in stove, is taken out after material is cooled to room temperature, 400 eye mesh screens are crossed after being crushed through air-flow, obtain surface bag
Cover 1 wt.% Li4Ti5O12Nickel cobalt lithium aluminate cathode material.
Fig. 1 is the wt.% Li of Surface coating 1 prepared by embodiment 14Ti5O12Nickel cobalt lithium aluminate cathode material XRD.Bag
Cover Li4Ti5O12Afterwards there is no significant change in the XRD spectrum of material, and (006)/(102) and the division peak of (110)/(108) two pairs divide
Split substantially, exist without dephasign, be the α-NaFeO of hexagonal crystal system2Layer structure.
Fig. 2 is nickel cobalt lithium aluminate cathode material（Uncoated material）, embodiment 1 prepare the wt.% of Surface coating 1
Li4Ti5O12Nickel cobalt lithium aluminate cathode material（Covering material）Cyclic curve.With uncoated material/covering material as positive pole,
Metal lithium sheet is negative pole, polyethylene and polypropylene composite film（Celgard 2300）It is barrier film, the ethylene carbonate of 1M LiPF6：
Diethyl carbonate（Mass ratio is 1:1）Mixed solution is electrolyte, and button simulated battery is assembled into glove box.Stand 12h
After carry out electrochemical property test.Tested under the conditions of 2.5 ~ 4.25 V/0.2C multiplying powers, 1C is calculated by 180 mA/g.From
Be can be seen that in figure：Due to the presence of clad, the capacity of covering material is slightly below uncoated material before 40 weeks, but follow-up
Circulation in coating play its advantage, through 100 times circulate after, the capability retention of material is up to 87%, with good circulation
Performance.
Embodiment 2
15g titanium tetrachlorides are taken to be dissolved in 2L absolute ethyl alcohols and stir 10min.To addition 500g Ni in solution0.80Co0.15Al0.05
(OH)2Presoma, 245g LiOHH2O and 15g citric acids, heating stirring obtains colloidal sol at 60 DEG C.Colloidal sol is placed on drum
110 DEG C dry 12h in wind drying box, and 300 eye mesh screens are crossed after grinding.Material after sieving is placed in resistance furnace in 850 DEG C of guarantors
Warm 12h, is taken out after material is cooled to room temperature, and 400 eye mesh screens are crossed after being crushed through air-flow, obtains the wt.% of Surface coating 1
Li4Ti5O12Nickel cobalt lithium aluminate cathode material.
To the wt.% Li of 2 gained Surface coating of embodiment 14Ti5O12Nickel cobalt lithium aluminate cathode material carried out XRD surveys
Examination.Test gained XRD has and Fig. 1 identical features：Cladding Li4Ti5O12Afterwards there is no substantially change in the XRD spectrum of material
Change, (006)/(102) and the division peak division of (110)/(108) two pairs are obvious, exist without dephasign, are the α-NaFeO of hexagonal crystal system2
Layer structure.
To nickel cobalt lithium aluminate cathode material（Uncoated material）And the wt.% of 2 gained Surface coating of embodiment 1
Li4Ti5O12Nickel cobalt lithium aluminate cathode material（Covering material）Electrochemical property test has been carried out respectively.Using with embodiment 1
Same procedure and test condition have carried out electrochemical property test, and test gained cyclic curve has the feature similar with Fig. 2：
Due to the presence of clad, the capacity of covering material is slightly below uncoated material before 40 weeks, but is coated in follow-up circulation
Thing plays its advantage, and after being circulated through 100 times, the capability retention of material is up to 84.8%, with good cycle performance.
Embodiment 3
53g butyl titanates are taken to be dissolved in 2L absolute ethyl alcohols and stir 10min.To adding 500g in solution
Ni0.80Co0.15Al0.05(OH)2Presoma, 248g LiOHH2O and 10g glacial acetic acid, heating stirring obtains colloidal sol at 80 DEG C.
Colloidal sol is placed in air dry oven 110 DEG C and dries 12h, 300 eye mesh screens are crossed after grinding.Material after sieving is placed in resistance
15h is incubated in 880 DEG C in stove, is taken out after material is cooled to room temperature, 400 eye mesh screens are crossed after being crushed through air-flow, obtain surface bag
Cover 2 wt.% Li4Ti5O12Nickel cobalt lithium aluminate cathode material.
To the wt.% Li of 3 gained Surface coating of embodiment 24Ti5O12Nickel cobalt lithium aluminate cathode material carried out XRD surveys
Examination.Test gained XRD has and Fig. 1 identical features：Cladding Li4Ti5O12Afterwards there is no substantially change in the XRD spectrum of material
Change, (006)/(102) and the division peak division of (110)/(108) two pairs are obvious, exist without dephasign, are the α-NaFeO of hexagonal crystal system2
Layer structure.
To nickel cobalt lithium aluminate cathode material（Uncoated material）And the wt.% of 3 gained Surface coating of embodiment 2
Li4Ti5O12Nickel cobalt lithium aluminate cathode material（Covering material）Electrochemical property test has been carried out respectively.Using with embodiment 1
Same procedure and test condition have carried out electrochemical property test, and test gained cyclic curve has the feature similar with Fig. 2：
Due to the presence of clad, the capacity of covering material is slightly below uncoated material before 40 weeks, but is coated in follow-up circulation
Thing plays its advantage, and after being circulated through 100 times, the capability retention of material is up to 85.5%, with good cycle performance.
Embodiment 4
22g tetraisopropyl titanates are taken to be dissolved in 2L absolute ethyl alcohols and stir 10min.To adding 500g in solution
Ni0.80Co0.15Al0.05(OH)2Presoma, 248g LiOHH2O and 3g ammoniacal liquor, heating stirring obtains colloidal sol at 80 DEG C.Will be molten
Glue is placed in air dry oven 110 DEG C and dries 12h, and 300 eye mesh screens are crossed after grinding.Material after sieving is placed in resistance furnace
10h is incubated in 880 DEG C, is taken out after material is cooled to room temperature, 400 eye mesh screens are crossed after being crushed through air-flow, obtain Surface coating 2
wt.% Li4Ti5O12Nickel cobalt lithium aluminate cathode material.
To the wt.% Li of 4 gained Surface coating of embodiment 24Ti5O12Nickel cobalt lithium aluminate cathode material carried out XRD surveys
Examination.Test gained XRD has and Fig. 1 identical features：Cladding Li4Ti5O12Afterwards there is no substantially change in the XRD spectrum of material
Change, (006)/(102) and the division peak division of (110)/(108) two pairs are obvious, exist without dephasign, are the α-NaFeO of hexagonal crystal system2
Layer structure.
To nickel cobalt lithium aluminate cathode material（Uncoated material）And the wt.% of 4 gained Surface coating of embodiment 2
Li4Ti5O12Nickel cobalt lithium aluminate cathode material（Covering material）Electrochemical property test has been carried out respectively.Using with embodiment 1
Same procedure and test condition have carried out electrochemical property test, and test gained cyclic curve has the feature similar with Fig. 2：
Due to the presence of clad, the capacity of covering material is slightly below uncoated material before 40 weeks, but is coated in follow-up circulation
Thing plays its advantage, and after being circulated through 100 times, the capability retention of material is up to 86.2%, with good cycle performance.
Claims (5)
1. the preparation method of the modified nickel cobalt lithium aluminate cathode material of a kind of in-stiu coating, it is characterised in that comprise the following steps：
Step 1, titanium source is dissolved in absolute ethyl alcohol, prepares titanium covering liquid；
Step 2, by Ni0.80Co0.15Al0.05(OH)2Presoma, lithium source and complexing agent are added in above-mentioned titanium covering liquid, and in 60-80
Heating stirring obtains colloidal sol at DEG C；
Step 3, above-mentioned colloidal sol is placed in resistance furnace 800 through drying, grinding and sieving gained powder mixing material successively ~
10 ~ 20h is sintered at 900 DEG C, sintering feed is obtained after cooling；
Step 4, above-mentioned sintering feed is crushed, is sieved, and obtains Surface coating Li4Ti5O12Nickel cobalt lithium aluminate cathode material.
2. the preparation method of the modified nickel cobalt lithium aluminate cathode material of in-stiu coating according to claim 1, it is characterised in that：
Titanium source is the one kind in butyl titanate, titanium tetrachloride or tetraisopropyl titanate in the step 1.
3. the preparation method of the modified nickel cobalt lithium aluminate cathode material of in-stiu coating according to claim 1, it is characterised in that：
Lithium source is the one kind in lithium carbonate, lithium hydroxide, lithium nitrate or lithium acetate in the step 2.
4. a kind of preparation method of the modified nickel cobalt lithium aluminate cathode material of in-stiu coating, its feature according to claim 1
It is：
Step 2 complexing agent is the one or more combination in citric acid, glacial acetic acid or ammoniacal liquor.
5. the preparation method of the modified nickel cobalt lithium aluminate cathode material of the in-stiu coating according to any one of Claims 1-4,
It is characterized in that：
Surface cover Li in the step 44Ti5O12Quality account for Surface coating Li4Ti5O12Nickel cobalt lithium aluminate cathode material
The 0.5-3 wt.% of quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611077797.0A CN106711444A (en) | 2016-11-30 | 2016-11-30 | Preparation method of in situ coating modified NCA cathode material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611077797.0A CN106711444A (en) | 2016-11-30 | 2016-11-30 | Preparation method of in situ coating modified NCA cathode material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106711444A true CN106711444A (en) | 2017-05-24 |
Family
ID=58935103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611077797.0A Pending CN106711444A (en) | 2016-11-30 | 2016-11-30 | Preparation method of in situ coating modified NCA cathode material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106711444A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946579A (en) * | 2017-11-27 | 2018-04-20 | 中南大学 | A kind of nickel cobalt lithium aluminate cathode material of LiMn2O4 cladding and preparation method thereof |
| CN109065871A (en) * | 2018-08-13 | 2018-12-21 | 河北省科学院能源研究所 | It is a kind of to be mixed with modified nickel cobalt lithium aluminate cathode material and preparation method thereof |
| CN109449391A (en) * | 2018-10-09 | 2019-03-08 | 郑州中科新兴产业技术研究院 | A kind of high capacity class monocrystalline nickel cobalt lithium aluminate cathode material and preparation method thereof |
| CN113363478A (en) * | 2021-03-30 | 2021-09-07 | 万向一二三股份公司 | Coating agent for coating high-nickel ternary cathode material, preparation method and lithium ion battery |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832389A (en) * | 2012-09-25 | 2012-12-19 | 湖南长远锂科有限公司 | High-nickel positive active material of surface-modified lithium ion battery and preparation method of positive active material |
| WO2013115219A1 (en) * | 2012-01-31 | 2013-08-08 | 独立行政法人産業技術総合研究所 | Resin composition for lithium ion cell positive electrode |
| CN103441263A (en) * | 2013-08-31 | 2013-12-11 | 张宝 | Method for synthesizing nickel cobalt lithium manganate by sol-gel-solid state sintering method |
| CN104218241A (en) * | 2014-09-30 | 2014-12-17 | 奇瑞汽车股份有限公司 | Lithium ion battery anode lithium-rich material modification method |
| CN105470455A (en) * | 2014-09-03 | 2016-04-06 | 中国科学院宁波材料技术与工程研究所 | Modified lithium ion battery positive electrode material and preparation method therefor |
| CN105789606A (en) * | 2016-04-28 | 2016-07-20 | 山东玉皇新能源科技有限公司 | Preparation method of lithium titanate coated lithium ion battery nickel cobalt manganese cathode material |
-
2016
- 2016-11-30 CN CN201611077797.0A patent/CN106711444A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013115219A1 (en) * | 2012-01-31 | 2013-08-08 | 独立行政法人産業技術総合研究所 | Resin composition for lithium ion cell positive electrode |
| CN104054200A (en) * | 2012-01-31 | 2014-09-17 | 独立行政法人产业技术综合研究所 | Resin composition for positive electrode of lithium ion battery |
| CN102832389A (en) * | 2012-09-25 | 2012-12-19 | 湖南长远锂科有限公司 | High-nickel positive active material of surface-modified lithium ion battery and preparation method of positive active material |
| CN103441263A (en) * | 2013-08-31 | 2013-12-11 | 张宝 | Method for synthesizing nickel cobalt lithium manganate by sol-gel-solid state sintering method |
| CN105470455A (en) * | 2014-09-03 | 2016-04-06 | 中国科学院宁波材料技术与工程研究所 | Modified lithium ion battery positive electrode material and preparation method therefor |
| CN104218241A (en) * | 2014-09-30 | 2014-12-17 | 奇瑞汽车股份有限公司 | Lithium ion battery anode lithium-rich material modification method |
| CN105789606A (en) * | 2016-04-28 | 2016-07-20 | 山东玉皇新能源科技有限公司 | Preparation method of lithium titanate coated lithium ion battery nickel cobalt manganese cathode material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946579A (en) * | 2017-11-27 | 2018-04-20 | 中南大学 | A kind of nickel cobalt lithium aluminate cathode material of LiMn2O4 cladding and preparation method thereof |
| CN109065871A (en) * | 2018-08-13 | 2018-12-21 | 河北省科学院能源研究所 | It is a kind of to be mixed with modified nickel cobalt lithium aluminate cathode material and preparation method thereof |
| CN109449391A (en) * | 2018-10-09 | 2019-03-08 | 郑州中科新兴产业技术研究院 | A kind of high capacity class monocrystalline nickel cobalt lithium aluminate cathode material and preparation method thereof |
| CN113363478A (en) * | 2021-03-30 | 2021-09-07 | 万向一二三股份公司 | Coating agent for coating high-nickel ternary cathode material, preparation method and lithium ion battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109216688B (en) | Ternary lithium battery material, preparation method thereof and lithium ion battery | |
| CN110668509B (en) | A selenium-coated high-nickel ternary layered positive electrode material and preparation method thereof | |
| CN105576233B (en) | A kind of Ni-based tertiary cathode material and preparation method thereof | |
| CN102263239B (en) | One kind graphene coated adulterated lithium manganate composite positive pole and preparation method thereof | |
| CN112499695B (en) | Nickel-cobalt-manganese ternary cathode material and preparation method and application thereof | |
| EP4024519A1 (en) | Positive electrode material, preparation method therefor and lithium ion battery | |
| CN105932321A (en) | Doped micro-scale single-crystal ternary positive electrode material and preparation method thereof | |
| CN103779600B (en) | A kind of lithium titanate battery and manufacture method | |
| CN106602009A (en) | Lithium-rich positive electrode modified material of lithium ion battery and preparation method of lithium-rich positive electrode modified material | |
| CN103151528A (en) | Method for preparing aluminum-doped zinc oxide coated lithium-ion battery positive-pole material | |
| CN103794779A (en) | Aluminum oxide coated lithium manganese oxide spinel positive electrode material as well as preparation method thereof | |
| CN105789606A (en) | Preparation method of lithium titanate coated lithium ion battery nickel cobalt manganese cathode material | |
| CN106711444A (en) | Preparation method of in situ coating modified NCA cathode material | |
| CN106058238A (en) | Modified spherical nickel cobalt lithium manganate NCM622 anode material and preparation method thereof | |
| CN107644987A (en) | A kind of high Fe content manganese base sodium-ion battery positive material and preparation method thereof | |
| CN102237517A (en) | Lithium ion battery, cathode composite material and preparation methods thereof | |
| CN102394298A (en) | LiNi 0.133 Co 0.133 Mn 0.544 O 2 Method for coating material | |
| CN107204426A (en) | A kind of cobalt nickel oxide manganses lithium/titanate composite anode material for lithium of zirconium doping vario-property | |
| CN102664255B (en) | Lithium nickel manganese oxide material and preparation method thereof, lithium ion battery containing this material | |
| CN104319422A (en) | Method for improving cycling stability of lithium-manganese lithium ion battery | |
| CN103367733A (en) | Lithium ion battery cathode material and preparation method thereof and lithium ion battery | |
| CN103400978A (en) | Method for modifying lithium nickel manganese oxide material, lithium nickel manganese oxide material and lithium ion battery | |
| CN107611372A (en) | A kind of high power capacity high-voltage lithium-battery cathode material and preparation method thereof | |
| CN104241628A (en) | Method for preparing titanium-dioxide-modified ferric oxide microspheres as well as produced product and use of titanium-dioxide-modified ferric oxide microspheres | |
| CN103259008B (en) | Ternary composite positive electrode material of lithium ion battery and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
|
| RJ01 | Rejection of invention patent application after publication |