CN103872331A - Aluminum cladding method for lithium ion positive electrode material - Google Patents
Aluminum cladding method for lithium ion positive electrode material Download PDFInfo
- Publication number
- CN103872331A CN103872331A CN201410110568.9A CN201410110568A CN103872331A CN 103872331 A CN103872331 A CN 103872331A CN 201410110568 A CN201410110568 A CN 201410110568A CN 103872331 A CN103872331 A CN 103872331A
- Authority
- CN
- China
- Prior art keywords
- positive electrode
- aluminium
- aluminum
- lithium ion
- coating
- 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
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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- 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
-
- 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
-
- 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 an aluminum cladding method for a lithium ion positive electrode material. The aluminum cladding method comprises the following steps: (1) preparing a cladding-free positive electrode material by a conventional method; (b) preparing an aluminum salt solution from an inorganic aluminum salt and a solvent, wherein the aluminum salt solution is taken as a cladding solution, the aluminum salt is selected from aluminum nitrate, aluminum chloride, aluminum sulfate and aluminum acetate and the solvent is selected from ethanol, methanol and isopropanol; (c) adding the cladding-free positive electrode material into the aluminum salt solution, agitating and heating till the solution reflows; (d) after the solution reflows for 30 minutes, filtering to remove the solvent and drying in vacuum at 70-100 DEG C to prepare a semi-finished product; and (e) putting the semi-finished product into a muffle furnace for roasting, and naturally cooling to room temperature to obtain the aluminum-cladded positive electrode material. Compared with the prior art, the aluminum cladding method for the lithium ion positive electrode material disclosed by the invention not only can prolong the cycle life and improve the heat stability of the positive electrode material under high-charging cut-off voltage, but also can reduce the cladding cost and improve the cladding consistency.
Description
Technical field
The invention belongs to lithium ion battery field, more particularly, the present invention relates to a kind of aluminium method for coating of lithium ion anode material.
Background technology
Through development rapidly for a long time, lithium ion battery has been obtained a series of significant progresses, and has had application widely in the various aspects of daily life.But, due to a series of shortcomings such as current lithium ion battery average life is partially short, abuse adaptability is poor, high expensives, it is applied in to a certain extent and is restricted.
Owing to having, discharge capacity is high, security performance good, structural stability is good for the ternary material of layer structure, low cost and other advantages, is considered to one of optimal selection of the anode material for lithium-ion batteries of originating as electric automobile energy.But stratiform ternary material poor cycle performance under high voltage has limited its application.Research is found, with aluminium oxide, stratiform ternary material is carried out surface modification and can be significantly improved its chemical property, for example, there are some researches prove Al
2o
3be coated on behind the surface of ternary material, it can react with the HF producing in circulate electrolyte process and become the material that catches and consume HF, thereby reduce the generation of HF, significantly improve the dissolving of ternary material in cycle of higher pressure process and improve its circulation volume hold facility.
But mostly existing positive electrode aluminium method for coating is to adopt high toxicity organic solvent dissolution organo-aluminium source to be coated positive electrode, not only there is the problem of coated lack of homogeneity in these class methods, and solvent is harmful to human body and environment; Meanwhile, the low solubility in organo-aluminium source makes solvent load very large, has caused that energy consumption is large, cost is high.
In view of this, necessary a kind of environmental friendliness, the lithium ion anode material aluminium method for coating with low cost of providing.
Summary of the invention
The object of the invention is to: a kind of environmental friendliness, lithium ion anode material aluminium method for coating with low cost are provided.
In order to realize foregoing invention object, present inventor, through further investigation, provides a kind of aluminium method for coating of lithium ion anode material, and it comprises the following steps:
A) prepare without coated positive electrode with conventional method;
B) preparation covering liquid: utilize inorganic aluminate and solvent preparation aluminum salt solution as covering liquid, wherein, aluminium salt is selected from aluminum nitrate, aluminium chloride, aluminum sulfate, aluminium acetate, and solvent is selected from ethanol, methyl alcohol, isopropyl alcohol;
C) coated: will to join in above-mentioned aluminum salt solution without coated positive electrode, stir and be warming up to backflow;
D) remove solvent: after backflow 30min, suction filtration is removed solvent, and vacuumize obtains semi-finished product at 70-100 DEG C;
E) roasting: semi-finished product are placed in to Muffle furnace and carry out roasting, to improve the stability of coating layer, naturally cool to after room temperature, obtain the coated positive electrode of aluminium.
One as the aluminium method for coating of lithium ion anode material of the present invention is improved, and described is tertiary cathode material without coated positive electrode, as NCM333, NCM523, NCM622, NCM811 etc.
One as the aluminium method for coating of lithium ion anode material of the present invention is improved, and in the covering liquid that described step b) is prepared, aluminium ion molar concentration is 0.1-3mol/L.This is because aluminum ions molar concentration can directly have influence on coated uniformity: when concentration is excessive, can cause gelatin phenomenon; When too small, be difficult to again form coating layer and cause coated inhomogeneous at all surfaces of positive electrode; So aluminum ions molar concentration need to strictly be controlled.
One as the aluminium method for coating of lithium ion anode material of the present invention is improved, described step c) in, need to control without the addition of coated positive electrode, making the mol ratio of all transition metal summation M in aluminium element and positive electrode in covering liquid is Al:M=0.001-0.05:1.This is because covering amount too much can reduce the capacity performance of positive electrode, makes impedance increase simultaneously, crosses the safety and the life-span reduction that can not have the effect of protective layer at least and cause battery.
One as the aluminium method for coating of lithium ion anode material of the present invention is improved, and in described step coated process c), being warming up to while backflow is at the uniform velocity to heat up with the speed of 2-5 DEG C/min.
One as the aluminium method for coating of lithium ion anode material of the present invention is improved, described step e) in, sintering temperature is 500-700 DEG C, the time is 3-7h.
Compared with prior art, the aluminium method for coating of lithium ion anode material of the present invention at least has the following advantages:
(1) coated process is carried out under water-less environment, can not reduce the gram volume of positive electrode;
(2) significantly promote in the uniformity of coating layer that material surface forms, not only can not reduce the high rate performance of positive electrode, and its thermal stability also there is raising significantly;
(3) use nontoxic alcohols to make solvent, reduced the harm to human body, and environmentally friendly;
(4) adopt inorganic aluminate as aluminium source, the aluminium ion concentration of covering liquid can reach 3mol/L, has greatly reduced the use amount of solvent, is conducive to cost-saving;
(5) coated process only need be heated to reflux temperature by solvent, and keeps 30min, process stabilizing maturation, and energy consumption is low;
(6) method of the present invention also has advantages of that easy to operate, step is simple, is applicable to suitability for industrialized production.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, aluminium method for coating and the beneficial effect thereof of lithium ion anode material of the present invention are further elaborated.
Fig. 1 and Fig. 2 are the positive electrode scanning electron microscope (SEM) photograph of the coated aluminum oxide that makes of comparative example 1 of the present invention.
Fig. 3 and Fig. 4 are the positive electrode scanning electron microscope (SEM) photograph of the coated aluminum oxide that makes of the embodiment of the present invention 1.
Fig. 5 is the positive electrode XRD diffraction pattern of the coated aluminum oxide that makes of the embodiment of the present invention 1.
Fig. 6 is the cycle of higher pressure performance curve comparison diagram of the positive electrode of the alumina-coated that makes of the embodiment of the present invention 1～5 and comparative example 1.
Fig. 7 is the positive electrode DSC curve chart of the alumina-coated that makes of the embodiment of the present invention 1 and comparative example 1.
Embodiment
In order to make goal of the invention of the present invention, technical scheme and useful technique effect more clear, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but, should be understood that, embodiments of the invention are only used to explain the present invention, be not intended to limit the present invention, and embodiments of the invention are not limited to the embodiment providing in specification.
Comparative example 1
1) aluminium isopropoxide is dissolved in toluene solution, is mixed with mass concentration and is 20% aluminium salt sol;
2) by 100g without coated tertiary cathode material LiCo
1/3ni
1/3mn
1/3o
2be scattered in the there-necked flask that 1L is equipped with 100g ethanol, stir 10min, add in aluminium colloidal sol with the speed of 5ml/min, wherein the mol ratio of the transition metal sum M of element al and positive electrode is Al/M=0.005;
3) 100 DEG C of circulating water heatings, vacuumize, and keep 7h dry out solvent, obtain the coated nickel-cobalt-manganese ternary lithium ion anode material of aluminium.
Form after adopting scanning electron microscopic observation oxidation of precursor aluminium coated, result is as shown in Fig. 1～2; The structure of XRD exosyndrome material, DSC measures the exothermic maximum peak that material reacts with electrolyte, as Fig. 7.
1) preparation covering liquid: utilize aluminum salt solution that nine water aluminum nitrates and ethanol is mixed with 1mol/L as covering liquid;
2) coated: 100g conventional method is made without coated tertiary cathode material LiCo
1/3ni
1/3mn
1/3o
2join in aluminum salt solution, after stirring, be warming up to backflow with 2 DEG C/min, in solution, the mol ratio of the transition metal sum M of element al and positive electrode is Al/M=0.005;
3) remove solvent: after backflow 30min, suction filtration, and be dried and obtain semi-finished product under 100 DEG C of vacuum;
4) roasting: semi-finished product are placed in to Muffle furnace, with 500 DEG C of roasting 5h, naturally cool to after room temperature, obtain the coated LiCo of aluminium
1/3ni
1/3mn
1/3o
2positive electrode.
Form after adopting scanning electron microscopic observation oxidation of precursor aluminium coated, result is as shown in Fig. 3～4; The structure of XRD exosyndrome material, as shown in Figure 5; DSC measures the exothermic maximum peak that material reacts with electrolyte, as Fig. 7.
Can find out from Fig. 3～4 and the contrast of Fig. 1～2, use the coated coating layer uniformity forming of aluminium method for coating of lithium ion anode material of the present invention significantly to promote; As can be seen from Figure 5, after positive electrode uses the aluminium method for coating of lithium ion anode material of the present invention coated, crystal structure does not change, and has ensured the integrality of structure.
Adopt the listed material of table 1 and consumption, prepare aluminium clad anode material according to the method for embodiment 1.
Table 1, embodiment 1～5 material therefor and consumption contrast table
Chemical property is analyzed:
By the synthetic active material sample obtaining in comparative example 1 and embodiment 1～5 respectively with conductive carbon, binding agent Kynoar (PVDF) by the mass ratio of 90:5:5, in 1-METHYLPYRROLIDONE (NMP) solvent, mix, under normal temperature, stir 12h, be made into anode sizing agent; Be that on the Al paper tinsel collector of 16 μ m, 120 DEG C of vacuumize 12h, are washed into the disk that diameter is 14.0mm after colding pressing at thickness by anode sizing agent scraper for coating; Negative pole adopts the metal lithium sheet of diameter 15.0mm, and electrolyte adopts the LiPF6 solution (solvent is EC and the EMC of volume ratio 3:7) of 1mol/L, and barrier film adopts polypropylene (PP), and in glove box, assembling obtains CR2430 button cell.
On LAND button cell tester to the each Battery pack the making electrochemical property test of being correlated with: the current density with 50mA/g is carried out constant current charge, charge cutoff voltage is 4.45V, 4.45V constant voltage charge to current density is 2mA/g, then with the current density constant-current discharge of 50mA/g to 3.0V; Carry out loop test by above-mentioned flow process button type battery, obtain the cycle performance of the each active material of synthesized.
Fig. 6 has provided the circulation volume curve of comparative example 1 and embodiment 1～5 positive electrode, and as can be seen from the figure, comparative example 1 has shown capacity attenuation fast, and embodiment 1～5 has shown good cyclical stability.
DSC heat stability testing:
The button cell being assembled into is completely charged to after 4.45V, in the glove box that is full of argon gas, button cell is taken apart, taken out positive plate, cut out and be placed in the close crucible that 1 μ l electrolyte is housed for the disk of diameter 2mm, heating rate with 5 DEG C/min is tested, and intensification scope is 20-500 DEG C.
Fig. 7 has provided the DSC curve of comparative example 1 and embodiment 1, and as can be seen from the figure, the exothermic peak of comparative example 1 appears at lower temperature, and the exothermic peak of embodiment 1 has postponed 20 DEG C, shows better security performance.
In sum, the aluminium method for coating of lithium ion anode material of the present invention not only can improve cycle life and the thermal stability of positive electrode under high charge cut-ff voltage, and has reduced coated cost, has improved coated consistency.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also carry out suitable change and amendment to above-mentioned execution mode.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection range of claim of the present invention modifications and changes more of the present invention.In addition,, although used some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (6)
1. an aluminium method for coating for lithium ion anode material, is characterized in that comprising the following steps:
A) preparation is without coated positive electrode;
B) preparation covering liquid: utilize inorganic aluminate and solvent preparation aluminum salt solution as covering liquid, wherein, aluminium salt is selected from aluminum nitrate, aluminium chloride, aluminum sulfate, aluminium acetate, and solvent is selected from ethanol, methyl alcohol, isopropyl alcohol;
C) coated: will to join in above-mentioned aluminum salt solution without coated positive electrode, stir and be warming up to backflow;
D) remove solvent: after backflow 30min, suction filtration is removed solvent, and vacuumize obtains semi-finished product at 70-100 DEG C;
E) roasting: semi-finished product are placed in to Muffle furnace and carry out roasting, naturally cool to after room temperature, obtain the coated positive electrode of aluminium.
2. the aluminium method for coating of lithium ion anode material according to claim 1, is characterized in that: described step a) in, be tertiary cathode material without coated positive electrode.
3. the aluminium method for coating of lithium ion anode material according to claim 1, is characterized in that: in the covering liquid that described step b) is prepared, aluminium ion molar concentration is 0.1-3mol/L.
4. the aluminium method for coating of lithium ion anode material according to claim 1, it is characterized in that: described step c) in, need to control without the addition of coated positive electrode, making the mol ratio of all transition metal summation M in aluminium element and positive electrode in covering liquid is Al:M=0.001～0.05:1.
5. the aluminium method for coating of lithium ion anode material according to claim 1, is characterized in that: in described step coated process c), being warming up to while backflow is at the uniform velocity to heat up with the speed of 2-5 DEG C/min.
6. the aluminium method for coating of lithium ion anode material according to claim 1, is characterized in that: described step e) in, sintering temperature is 500-700 DEG C, the time is 3-7h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410110568.9A CN103872331A (en) | 2014-03-24 | 2014-03-24 | Aluminum cladding method for lithium ion positive electrode material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410110568.9A CN103872331A (en) | 2014-03-24 | 2014-03-24 | Aluminum cladding method for lithium ion positive electrode material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103872331A true CN103872331A (en) | 2014-06-18 |
Family
ID=50910639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410110568.9A Pending CN103872331A (en) | 2014-03-24 | 2014-03-24 | Aluminum cladding method for lithium ion positive electrode material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103872331A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107275579A (en) * | 2016-04-08 | 2017-10-20 | 江苏华东锂电技术研究院有限公司 | The preparation method of positive electrode active materials covering liquid and the method for coating of positive electrode active materials |
| CN108123122A (en) * | 2017-12-19 | 2018-06-05 | 青岛乾运高科新材料股份有限公司 | NCM622 positive electrode coating modification methods |
| CN108232169A (en) * | 2018-01-22 | 2018-06-29 | 邴玉萍 | A kind of nickel cobalt lithium aluminate cathode material surface coating method |
| CN108550803A (en) * | 2018-03-21 | 2018-09-18 | 北京旭碳新材料科技有限公司 | Ternary anode material for lithium-ion batteries and preparation method thereof |
| CN108682822A (en) * | 2018-05-30 | 2018-10-19 | 陕西煤业化工技术研究院有限责任公司 | A kind of nickelic ternary material of long circulation life and preparation method thereof |
| CN109728278A (en) * | 2018-12-29 | 2019-05-07 | 蜂巢能源科技有限公司 | Positive electrode active materials and preparation method thereof and lithium ion battery |
| WO2019224022A1 (en) * | 2018-05-24 | 2019-11-28 | Robert Bosch Gmbh | Method for producing an electrode active material, an electrode and an electrochemical storage unit |
| CN110600714A (en) * | 2019-10-12 | 2019-12-20 | 福建师范大学 | Preparation method of nickel-cobalt-manganese-doped ternary material coated with polymeric aluminum |
| CN110690445A (en) * | 2019-10-12 | 2020-01-14 | 福建师范大学 | Preparation method of polyaluminium coated nickel cobalt lithium manganate material |
| WO2023050054A1 (en) * | 2021-09-28 | 2023-04-06 | 宁德新能源科技有限公司 | Electrochemical apparatus, and electric device including electrochemical apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255074A (en) * | 2011-04-18 | 2011-11-23 | 耿世达 | Novel lithium ion battery anode cathode particle alloy metal cladding method |
| CN102881884A (en) * | 2012-09-15 | 2013-01-16 | 安徽亚兰德新能源材料股份有限公司 | Manufacturing process for Al-clad spherical nickel-cobalt-manganese ternary material |
| CN102891301A (en) * | 2012-09-25 | 2013-01-23 | 上海锦众信息科技有限公司 | Method for manufacturing cathode material of aluminum coated lithium ion battery |
-
2014
- 2014-03-24 CN CN201410110568.9A patent/CN103872331A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255074A (en) * | 2011-04-18 | 2011-11-23 | 耿世达 | Novel lithium ion battery anode cathode particle alloy metal cladding method |
| CN102881884A (en) * | 2012-09-15 | 2013-01-16 | 安徽亚兰德新能源材料股份有限公司 | Manufacturing process for Al-clad spherical nickel-cobalt-manganese ternary material |
| CN102891301A (en) * | 2012-09-25 | 2013-01-23 | 上海锦众信息科技有限公司 | Method for manufacturing cathode material of aluminum coated lithium ion battery |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107275579A (en) * | 2016-04-08 | 2017-10-20 | 江苏华东锂电技术研究院有限公司 | The preparation method of positive electrode active materials covering liquid and the method for coating of positive electrode active materials |
| CN107275579B (en) * | 2016-04-08 | 2019-12-13 | 江苏华东锂电技术研究院有限公司 | Preparation method of positive electrode active material coating liquid and coating method of positive electrode active material |
| CN108123122A (en) * | 2017-12-19 | 2018-06-05 | 青岛乾运高科新材料股份有限公司 | NCM622 positive electrode coating modification methods |
| CN108123122B (en) * | 2017-12-19 | 2020-06-19 | 青岛乾运高科新材料股份有限公司 | NCM622 positive electrode material coating modification method |
| CN108232169A (en) * | 2018-01-22 | 2018-06-29 | 邴玉萍 | A kind of nickel cobalt lithium aluminate cathode material surface coating method |
| CN108550803A (en) * | 2018-03-21 | 2018-09-18 | 北京旭碳新材料科技有限公司 | Ternary anode material for lithium-ion batteries and preparation method thereof |
| WO2019224022A1 (en) * | 2018-05-24 | 2019-11-28 | Robert Bosch Gmbh | Method for producing an electrode active material, an electrode and an electrochemical storage unit |
| CN108682822A (en) * | 2018-05-30 | 2018-10-19 | 陕西煤业化工技术研究院有限责任公司 | A kind of nickelic ternary material of long circulation life and preparation method thereof |
| CN109728278A (en) * | 2018-12-29 | 2019-05-07 | 蜂巢能源科技有限公司 | Positive electrode active materials and preparation method thereof and lithium ion battery |
| CN109728278B (en) * | 2018-12-29 | 2021-04-20 | 蜂巢能源科技有限公司 | Positive active material, preparation method thereof and lithium ion battery |
| CN110600714A (en) * | 2019-10-12 | 2019-12-20 | 福建师范大学 | Preparation method of nickel-cobalt-manganese-doped ternary material coated with polymeric aluminum |
| CN110690445A (en) * | 2019-10-12 | 2020-01-14 | 福建师范大学 | Preparation method of polyaluminium coated nickel cobalt lithium manganate material |
| CN110690445B (en) * | 2019-10-12 | 2022-06-07 | 福建师范大学 | Preparation method of polyaluminium coated nickel cobalt lithium manganate material |
| WO2023050054A1 (en) * | 2021-09-28 | 2023-04-06 | 宁德新能源科技有限公司 | Electrochemical apparatus, and electric device including electrochemical apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103872331A (en) | Aluminum cladding method for lithium ion positive electrode material | |
| US9985273B2 (en) | Three-dimensional nanosized porous metal oxide electrode material of lithium ion battery and preparation method thereof | |
| CN107910529A (en) | A kind of ternary cathode material of lithium ion battery of manganese Base Metal organic frame compound cladding and preparation method thereof | |
| CN108899539A (en) | A kind of nickelic ternary lithium ion anode material and preparation method thereof | |
| CN103413924B (en) | A kind of La 1-xca xcoO 3coated lithium ion battery LiNi 1/3co 1/3mn 1/3o 2positive electrode and preparation method thereof | |
| CN103682327B (en) | Based on the lithium ion battery and preparation method thereof of the hollow porous nickel oxide composite material of N doping carbon-coating parcel | |
| CN104466168A (en) | Preparation method of cobaltosic oxide-carbon porous nanofiber and application of cobaltosic oxide-carbon porous nanofiber to preparation of lithium ion battery | |
| CN106410153B (en) | A kind of titanium nitride cladding nickel titanate composite material and preparation method and application | |
| CN103236512A (en) | Ceramic diaphragm and application of same to lithium ion battery | |
| CN106784815A (en) | A kind of iron-based sulfide electrode material, preparation method and the application in solid state battery | |
| CN104332619A (en) | Polypyrrole- coated full-gradient cathode material and preparation method thereof | |
| CN105529456A (en) | Industrial production method for 30C-rate lithium nickel cobalt manganese oxide NCM523 ternary cathode material | |
| CN104009215B (en) | A kind of vanadium dioxide-graphene complex and the purposes as anode material for lithium-ion batteries thereof | |
| CN110364716A (en) | Spherical magnesia coated lithium ion battery tertiary cathode material of magnesium-based MOF and preparation method thereof | |
| CN110627031A (en) | Preparation method of molybdenum-doped cobalt phosphide-carbon coral sheet composite material | |
| CN110783564A (en) | Nitrogen-doped carbon-coated ternary positive electrode material and preparation method thereof | |
| CN110112387B (en) | Titanium suboxide coated and modified cathode material and preparation method thereof | |
| CN104241628B (en) | A kind of preparation method and its obtained product and purposes of the di-iron trioxide microballoon of titanium dioxide modification | |
| CN106960947A (en) | Composite, its preparation method and application | |
| CN107311119A (en) | Hollow nanoprisms material of the cobalt nickel of four selenizing two and its preparation method and application | |
| CN108598463B (en) | Preparation method of nano flaky lithium-rich manganese-based positive electrode material | |
| CN106992295A (en) | A kind of preparation method of single dispersing α ferric oxide nano pieces | |
| CN108264099B (en) | A kind of preparation method of lithium ion battery high-performance two-dimensional sheet nickel oxide negative electrode material | |
| CN112103499B (en) | Graphene-based negative electrode material and preparation method thereof | |
| CN111384389A (en) | Precursor of ternary material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140618 |