CN109256541A - A kind of hard carbon cathode material - Google Patents
A kind of hard carbon cathode material Download PDFInfo
- Publication number
- CN109256541A CN109256541A CN201810975634.7A CN201810975634A CN109256541A CN 109256541 A CN109256541 A CN 109256541A CN 201810975634 A CN201810975634 A CN 201810975634A CN 109256541 A CN109256541 A CN 109256541A
- Authority
- CN
- China
- Prior art keywords
- container
- hard carbon
- negative electrode
- carbon cathode
- cathode material
- 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
- H01M4/362—Composites
- H01M4/366—Composites as layered products
-
- 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
-
- 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
- H01M4/485—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
-
- 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
- H01M4/624—Electric conductive fillers
-
- 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
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- 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 kind of hard carbon cathode materials, belong to field of new energy technologies.Hard carbon cathode material is through techniques such as pre-treatment, the mixed heat of grease, post-processings, utilize cheap raw material, thermal process is mixed using specific grease to be reacted, it realizes and the carbon-coating of vanadium oxide is coated, improve the structural stability of vanadium oxide, the electrode material being had excellent performance, finally formed negative electrode material has biggish interlamellar spacing, be conducive to lithium ion in interlayer free movement, and the pattern of nanometer shape, lithium ion diffusion length can be shortened, alleviate volume change caused by lithium ion deintercalation, the performance of battery has great promotion.
Description
Technical field
The invention belongs to field of new energy technologies, and in particular to a kind of hard carbon cathode material.
Background technique
The lithium ion battery of Reusability of capable of charging is referred to as lithium secondary battery, its research and development start from last century 70,80
Age.1991, Sony successfully produced the repeatable charging of first item in the world, commercially available lithium battery, indicated
The arrival in one completely new energy storage epoch.
In the initial stage of lithium secondary battery development, it is mainly used in the backup power source of electronic product, but enters 21 generation
After discipline, lithium ion battery starts to be increasingly being used for power drive power supply.Especially tesla of U.S. publication in 2012
Since trendy MODEL S, MODEL X, Chinese Government takes this opportunity to have an effect, and constantly releases various measures in policy, promotes the new energy of China
The development of source automobile industry, and then also greatly advance the development of power lithium-ion battery industry.
In recent years, China's lithium ion battery industry (including battery, positive and negative pole material, diaphragm, electrolyte and special equipment
Deng) new highlight continuously emerges in industrial pattern and New technical use, lithium ion battery and critical material yield are also in steady growth.Mesh
The lithium ion power battery cathode material of preceding volume production includes cobalt acid lithium (LiCoO2), LiFePO4 (LiFePO4), LiMn2O4
(LiMn2O4) and ternary material (nickle cobalt lithium manganate and nickel cobalt lithium aluminate) product.
But the promotion of lithium battery energy density at present is using sacrificing security and service life as cost.For example, city
18650 battery life of main ternary on field only has 500 times or so, and there are also security risks for many batteries of low quality.
Expert points out that influence power battery performance is not only one index of energy density, and there are also specific power densities, safety
The many factors such as property, consistency and cycle life.The equalization point of an industrial application is found between all multi objectives and cost,
It is only the key of support new-energy automobile development.
In recent years, the promotion of lithium ion battery specific energy was mainly to walk using the technology path of nickelic positive electrode to realize
's.The main positive electrode that industry in 2017 uses is that NCM111, NCM523,2018 years NCM622 and NCM811 will gradually become
Mainstream, and negative electrode material is then substantially all using artificial graphite.Currently, using ternary NCM for the energy of the lithium ion battery of anode
Metric density has reached 250Wh/kg, and very close to the limit of this material, but the important performances such as safety and service life are but
It is not much promotion, or even is declined.
For the disadvantages of current lithium battery integrated performance is poor, the service life is short, publication number 106784812A is by improving ferric phosphate
The preparation method of lithium battery makes battery have the advantages of using under quick charge, low temperature.However the change of anode can not still expire
Sufficient current needs.
Summary of the invention
In view of the above problems, the present invention successfully solves safety, charge and discharge from cell negative electrode material
The problems such as multiplying power and cycle life, has developed high-performance hard carbon cathode material.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of hard carbon cathode material, the negative electrode material include the component of following parts by weight: vanadic anhydride 45-55
Part, 9-11 parts of carbon source, 2-4 parts of boron powder, 1-5 parts of filler.
Preferably, the carbon source includes one of rhamnose, lactose, maltose or a variety of.
Preferably, the filler includes one of tin nitride, silicon nitride, silver chlorate or a variety of.
The present invention is short for lithium battery service life, and the lower status of performance improves cell negative electrode material, used
Raw material and its simple, it is the sugar of reproducibility that wherein carbon source used, which is common monosaccharide or disaccharides, can be with five oxidations
Two vanadium react, and form V3O7, part of (account about total amount 80%) contains the 1-2 crystallization water, and is formed with typical case
Layered crystal structure, greatly improve the capacity of battery.And importantly, during the reaction, the carbon meeting in carbon source
In V3O7Outer to form close clad structure, microcosmic lower in elongated, soft band-like, in microns, width is with hundred nanometers for length
Meter, thickness is in terms of ten nanometers, and after foring so subtle structure, the specific surface area of carbon coating layer is sharply increased, and enhances
The electronic reciprocal rate of battery cathode, that is, improve the discharge capability of battery.And during the reaction, exactly carbon coating layer is sharply
Variation, will form micropore, and the present invention exactly utilizes these micropores, be filled with filler, further expansion specific surface area,
The contact for being mixed with all raw materials is even more formed, fans out from point to area, has expanded the discharge capability of battery cathode, it is negative with conventional battery
Pole is compared, and discharge capability improves 20%.
A kind of preparation method of hard carbon cathode material, includes the following steps:
(1) pre-treatment: weighing raw material by above-mentioned negative electrode material, carbon source be dissolved in the water, be fitted into container 1, by five oxygen
Change two vanadium to be fitted into container 2；
(2) the mixed heat of grease: being added deionized water into container 1,2 respectively, then vegetable oil be added dropwise, and container 1,2 is placed in close
It closes in device, heat and keeps the temperature, then pour into the solution in container 1 in container 2, boron powder is added, continues to heat up and keep the temperature, instead
Should completely after natural cooling, dry negative electrode material semi-finished product after filtering；
(3) it post-processes: obtaining negative electrode material using chemical vapor deposition filler in negative electrode material surface of semi-finished
Finished product.
Since current conventional cathode of lithium battery is generally prepared using single material, such as carbon black.This single material
Material is difficult to be purified completely in itself, usually contains different impurity, and after impurity content rises, just it will greatly affect
The performance of battery.So the present invention utilizes cheap raw material, thermal process is mixed using specific grease and is reacted, is realized to oxygen
The carbon-coating cladding for changing vanadium, improves the structural stability of vanadium oxide, the electrode material being had excellent performance, and the boron powder being added,
It can react in high-temperature heating with vanadic anhydride, form VB2, enhance the electric conductivity of battery, this is for above-mentioned formation
The carbon coating of large area has supplement booster action.Finally formed negative electrode material have biggish interlamellar spacing, be conducive to lithium from
Son is in interlayer free movement, and the pattern of nanometer shape, can shorten lithium ion diffusion length, alleviates caused by lithium ion deintercalation
Volume change.
Preferably, step (1) container 1, container 2 are open-top receptacle, and open-mouth has the necking down of 3-5 section.It is spacious
Necking down, the loss of moisture when can effectively reduce heating are set at mouthful, and moisture is excessively few, vegetable oil will adsorb material
It is adhered, part overload reaction occurs in subsequent high temperature reaction, that is, is difficult to homogeneous reaction, the negative electrode material component distributing of generation is not
Uniformly, battery performance can be reduced.
Preferably, step (2) vegetable oil is one of peanut oil, linseed oil, castor oil or a variety of.The present invention
The grease of use mixes thermal process, although the vegetable oil being added only has 6-10 drop, vegetable oil not only can to supplementary carbon source,
Can also equilibrium temperature, and in water boiling reduce evaporation, avoid reaction fail.
Preferably, step (2) heating temperature is 100-120 DEG C, 30-60s is kept the temperature.The pre-heat treatment can homogenize not
With the temperature of container, avoid generating by-product because of temperature difference when mixing.
Preferably, step (2) also rotates container 2, speed of rotation 1r/min after boron powder is added.Low speed
Rate rotational energy homogenizes raw material, so that raw material is come into full contact with, promotes reaction rate.
Preferably, step (2) is described to be continuously heating to 245-255 DEG C, 1.2-1.4h is kept the temperature.
Preferably, step (2) drying is to be dried in vacuo 8-10h at 85-95 DEG C.
A kind of application of hard carbon cathode material in lithium battery.
Compared with prior art, the present invention has the advantage that
(1) present invention is reacted using the sugar of reproducibility with vanadic anhydride, forms V3O7, not only material is cheap, but also
Battery performance can be promoted by a relatively large margin.
(2) present invention mixes thermal method using grease and has synthesized nano strip V3O7And the cell negative electrode material of the crystallization water is had, tool
There is typical layered crystal structure, and there is biggish interlamellar spacing, is conducive to lithium ion in interlayer free movement.
(3) negative electrode material has soft 1-dimention nano shape pattern, can shorten the diffusion length of lithium ion, alleviate lithium from
Volume change caused by sub- deintercalation.
(4) present invention has carried out uniform carbon coating in nanometer belt surface, can effectively improve the conductivity of negative electrode material.
Specific embodiment
The following is specific embodiments of the present invention, and technical scheme of the present invention will be further described, but the present invention is simultaneously
It is not limited to these embodiments.
Embodiment 1
Pre-treatment: raw material is weighed by above-mentioned negative electrode material, the component including following parts by weight: 50 parts of vanadic anhydride,
10 parts of carbon source, 3 parts of boron powder, 3 parts of filler, wherein carbon source is the mixture of rhamnose, lactose, maltose, and filler is nitridation
Tin, silicon nitride, silver chlorate mixture, carbon source is dissolved in the water, is fitted into container 1, by vanadic anhydride be packed into container 2
In；
The mixed heat of grease: being added deionized water 25ml into container 1,2 respectively, then peanut oil, linseed oil, castor oil is added dropwise
Miscella 8 drips, and container 1,2 is placed in obturator, 110 DEG C is heated to and keeps the temperature 45s, then fall the solution in container 1
Enter in container 2, boron powder is added, is continuously heating to 250 DEG C and keeps the temperature 1.3h, natural cooling after fully reacting, at 90 DEG C after filtering
Lower vacuum drying 9h obtains negative electrode material semi-finished product；
Post-processing: chemical vapor deposition tin nitride, silicon nitride, silver chlorate are utilized in negative electrode material surface of semi-finished
Obtain negative electrode material finished product.
Embodiment 2
Pre-treatment: raw material is weighed by above-mentioned negative electrode material, the component including following parts by weight: 45 parts of vanadic anhydride,
9 parts of carbon source, 2 parts of boron powder, 1 part of filler, wherein carbon source is maltose, and filler is tin nitride, and carbon source is dissolved in the water, and is filled
Enter in container 1, vanadic anhydride is fitted into container 2；
The mixed heat of grease: being added deionized water 25ml into container 1,2 respectively, then peanut oil, linseed oil, castor oil is added dropwise
Miscella 8 drips, and container 1,2 is placed in obturator, 110 DEG C is heated to and keeps the temperature 45s, then fall the solution in container 1
Enter in container 2, boron powder is added, is continuously heating to 250 DEG C and keeps the temperature 1.3h, natural cooling after fully reacting, at 90 DEG C after filtering
Lower vacuum drying 9h obtains negative electrode material semi-finished product；
Post-processing: negative electrode material surface of semi-finished using chemical vapor deposition tin nitride obtain negative electrode material at
Product.
Embodiment 3
Pre-treatment: raw material is weighed by above-mentioned negative electrode material, the component including following parts by weight: 55 parts of vanadic anhydride,
11 parts of carbon source, 4 parts of boron powder, 5 parts of filler, wherein carbon source is lactose, and filler is silicon nitride, and carbon source is dissolved in the water, and is filled
Enter in container 1, vanadic anhydride is fitted into container 2；
The mixed heat of grease: being added deionized water 25ml into container 1,2 respectively, then peanut oil, linseed oil, castor oil is added dropwise
Miscella 8 drips, and container 1,2 is placed in obturator, 110 DEG C is heated to and keeps the temperature 45s, then fall the solution in container 1
Enter in container 2, boron powder is added, is continuously heating to 250 DEG C and keeps the temperature 1.3h, natural cooling after fully reacting, at 90 DEG C after filtering
Lower vacuum drying 9h obtains negative electrode material semi-finished product；
Post-processing: negative electrode material surface of semi-finished using chemical vapor deposition silicon nitride obtain negative electrode material at
Product.
Embodiment 4
Pre-treatment: raw material is weighed by above-mentioned negative electrode material, the component including following parts by weight: 50 parts of vanadic anhydride,
10 parts of carbon source, 3 parts of boron powder, 3 parts of filler, wherein carbon source is the mixture of rhamnose, lactose, maltose, and filler is nitridation
Tin, silicon nitride, silver chlorate mixture, carbon source is dissolved in the water, is fitted into container 1, by vanadic anhydride be packed into container 2
In；
The mixed heat of grease: being added deionized water 20ml into container 1,2 respectively, then the drop of peanut oil 6 is added dropwise, and container 1,2 is set
Enter in obturator, be heated to 100 DEG C and keep the temperature 30s, then pour into the solution in container 1 in container 2, boron powder is added, after
Continuous to be warming up to 245 DEG C and keep the temperature 1.2h, natural cooling after fully reacting is dried in vacuo 8h at 85 DEG C and obtains negative electrode material after filtering
Semi-finished product；
Post-processing: chemical vapor deposition tin nitride, silicon nitride, silver chlorate are utilized in negative electrode material surface of semi-finished
Obtain negative electrode material finished product.
Embodiment 5
Pre-treatment: raw material is weighed by above-mentioned negative electrode material, the component including following parts by weight: 50 parts of vanadic anhydride,
10 parts of carbon source, 3 parts of boron powder, 3 parts of filler, wherein carbon source is the mixture of rhamnose, lactose, maltose, and filler is nitridation
Tin, silicon nitride, silver chlorate mixture, carbon source is dissolved in the water, is fitted into container 1, by vanadic anhydride be packed into container 2
In；
The mixed heat of grease: deionized water 30ml is added into container 1,2 respectively, then the miscella of linseed oil, castor oil is added dropwise
10 drops, container 1,2 is placed in obturator, 120 DEG C is heated to and keeps the temperature 60s, the solution in container 1 is then poured into container
In 2, be added boron powder, be continuously heating to 255 DEG C and keep the temperature 1.4h, natural cooling after fully reacting, after filtering at 95 DEG C vacuum
Dry 10h obtains negative electrode material semi-finished product；
Post-processing: chemical vapor deposition tin nitride, silicon nitride, silver chlorate are utilized in negative electrode material surface of semi-finished
Obtain negative electrode material finished product.
Embodiment 6
Difference with embodiment 1 is only that carbon source number is 8 parts in 6 negative electrode material of embodiment.
Embodiment 7
Difference with embodiment 1 is only that carbon source number is 12 parts in 7 negative electrode material of embodiment.
Embodiment 8
Difference with embodiment 1 is only that carbon source is that oil system is burnt in 8 negative electrode material of embodiment.
Embodiment 9
Difference with embodiment 1 is only that carbon source is that coal measures is burnt in 9 negative electrode material of embodiment.
Embodiment 10
Difference with embodiment 1 is only that filler is tin elemental metals in 10 negative electrode material of embodiment.
Embodiment 11
Difference with embodiment 1 is only that 11 grease of embodiment mixes in thermal process, and container 1,2 Hybrid Heating temperature are 240
℃。
Embodiment 12
Difference with embodiment 1 is only that 12 grease of embodiment mixes in thermal process, and container 1,2 Hybrid Heating temperature are 260
℃。
Embodiment 13-24
Cell negative electrode material made from embodiment 1-12 is respectively assembled at nickle cobalt lithium manganate (1:1:1) positive electrode negative
On pole collector and plus plate current-collecting body, negative electrode tab and positive plate are obtained after toasted, rod pressure, cutting, by positive plate, diaphragm and cathode
Capsule after piece is assembled with lamination process, injection commercial electrolytic liquid form battery.
Comparative example
Battery made from common batteries negative electrode material and nickle cobalt lithium manganate (1:1:1) positive electrode.
The battery of embodiment 13-24 and comparative example are tested, test its continue rate of charge, continuous discharge multiplying power,
Peak value rate of charge, crest discharge multiplying power and cycle-index, the results are shown in Table 1:
Table 1: the performance of battery in embodiment 13-24 and comparative example
The battery charging/discharging multiplying power of common negative electrode material is typically small, and the electricity that hard carbon cathode material of the invention is made into
Since multiplying power is larger, general approximation is indicated to integer in pond, can be actually deviated.
It is skilled to this field although present invention has been described in detail and some specific embodiments have been cited
For technical staff, as long as it is obvious for can making various changes or correct without departing from the spirit and scope of the present invention.
Claims (10)
1. a kind of hard carbon cathode material, which is characterized in that the negative electrode material includes the component of following parts by weight: five oxidations two
45-55 parts of vanadium, 9-11 parts of carbon source, 2-4 parts of boron powder, 1-5 parts of filler.
2. a kind of hard carbon cathode material according to claim 1, which is characterized in that the carbon source include rhamnose, lactose,
One of maltose is a variety of.
3. a kind of hard carbon cathode material according to claim 1, which is characterized in that the filler includes tin nitride, nitrogen
One of SiClx, silver chlorate are a variety of.
4. a kind of preparation method of hard carbon cathode material, which is characterized in that described method includes following steps:
(1) pre-treatment: weighing raw material by negative electrode material described in claim 1, carbon source be dissolved in the water, and is fitted into container 1, will
Vanadic anhydride is fitted into container 2；
(2) the mixed heat of grease: being added deionized water into container 1,2 respectively, then vegetable oil be added dropwise, and container 1,2 is placed in closed dress
It in setting, heats and keeps the temperature, then pour into the solution in container 1 in container 2, boron powder is added, continues to heat up and keep the temperature, reacted
Natural cooling after complete, dry negative electrode material semi-finished product after filtering；
(3) it post-processes: obtaining negative electrode material finished product using chemical vapor deposition filler in negative electrode material surface of semi-finished.
5. a kind of preparation method of hard carbon cathode material according to claim 4, which is characterized in that step (1) described appearance
Device 1, container 2 are open-top receptacle, and open-mouth has the necking down of 3-5 section.
6. a kind of preparation method of hard carbon cathode material according to claim 4, which is characterized in that step (2) described plant
Object oil is one of peanut oil, linseed oil, castor oil or a variety of.
7. a kind of preparation method of hard carbon cathode material according to claim 4, which is characterized in that step (2) is described to be added
Hot temperature is 100-120 DEG C, keeps the temperature 30-60s.
8. a kind of preparation method of hard carbon cathode material according to claim 4, which is characterized in that step (2) is being added
After boron powder, also container 2 is rotated, speed of rotation 1r/min.
9. a kind of preparation method of hard carbon cathode material according to claim 4, which is characterized in that step (2) it is described after
It is continuous to be warming up to 245-255 DEG C, 1.2-1.4h is kept the temperature, the drying is to be dried in vacuo 8-10h at 85-95 DEG C.
10. a kind of application of hard carbon cathode material in lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810975634.7A CN109256541B (en) | 2018-08-24 | 2018-08-24 | Hard carbon negative electrode material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810975634.7A CN109256541B (en) | 2018-08-24 | 2018-08-24 | Hard carbon negative electrode material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109256541A true CN109256541A (en) | 2019-01-22 |
| CN109256541B CN109256541B (en) | 2021-06-11 |
Family
ID=65049572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810975634.7A Active CN109256541B (en) | 2018-08-24 | 2018-08-24 | Hard carbon negative electrode material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109256541B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111063874A (en) * | 2019-12-18 | 2020-04-24 | 宁波禾木纳米科技有限公司 | Preparation method and application of hard carbon nano material for ion battery |
| CN112786873A (en) * | 2021-01-14 | 2021-05-11 | 广东凯金新能源科技股份有限公司 | Hard carbon negative electrode material |
| CN115818734A (en) * | 2022-11-21 | 2023-03-21 | 乳源东阳光新能源材料有限公司 | Carbon-coated ternary positive electrode material and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110083874A1 (en) * | 2009-10-09 | 2011-04-14 | E. I. Du Pont De Nemours And Company | Electrode and method for manufacturing the same |
| CN103545502A (en) * | 2013-10-30 | 2014-01-29 | 合肥恒能新能源科技有限公司 | Compound element-doped modified lithium titanate anode material and preparation method thereof |
| CN105680022A (en) * | 2016-03-29 | 2016-06-15 | 大连宏光锂业股份有限公司 | Production method of composite graphitic negative-electrode material containing natural oil coke |
| CN105742601A (en) * | 2016-03-25 | 2016-07-06 | 南京航空航天大学 | Method for in-situ synthesis of carbon coated-hydrated V3O7 nanobelt and lithium ion battery |
-
2018
- 2018-08-24 CN CN201810975634.7A patent/CN109256541B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110083874A1 (en) * | 2009-10-09 | 2011-04-14 | E. I. Du Pont De Nemours And Company | Electrode and method for manufacturing the same |
| CN103545502A (en) * | 2013-10-30 | 2014-01-29 | 合肥恒能新能源科技有限公司 | Compound element-doped modified lithium titanate anode material and preparation method thereof |
| CN105742601A (en) * | 2016-03-25 | 2016-07-06 | 南京航空航天大学 | Method for in-situ synthesis of carbon coated-hydrated V3O7 nanobelt and lithium ion battery |
| CN105680022A (en) * | 2016-03-29 | 2016-06-15 | 大连宏光锂业股份有限公司 | Production method of composite graphitic negative-electrode material containing natural oil coke |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111063874A (en) * | 2019-12-18 | 2020-04-24 | 宁波禾木纳米科技有限公司 | Preparation method and application of hard carbon nano material for ion battery |
| CN111063874B (en) * | 2019-12-18 | 2020-08-18 | 宁波禾木纳米科技有限公司 | Preparation method and application of hard carbon nano material for ion battery |
| CN112786873A (en) * | 2021-01-14 | 2021-05-11 | 广东凯金新能源科技股份有限公司 | Hard carbon negative electrode material |
| CN115818734A (en) * | 2022-11-21 | 2023-03-21 | 乳源东阳光新能源材料有限公司 | Carbon-coated ternary positive electrode material and preparation method and application thereof |
| CN115818734B (en) * | 2022-11-21 | 2024-04-02 | 乳源东阳光新能源材料有限公司 | Carbon-coated ternary positive electrode material, and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109256541B (en) | 2021-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110571432A (en) | element-doped biomass hard carbon negative electrode material for sodium ion battery, preparation method and sodium ion battery | |
| CN107359328B (en) | Preparation method of grape-shaped niobium oxide/carbon composite electrode material for lithium ion battery | |
| CN109148883A (en) | Anode material of lithium-ion battery and its preparation method and application based on pitch | |
| CN108899531A (en) | A kind of preparation method of Phosphate coating nickel cobalt aluminium tertiary cathode material | |
| CN108493426A (en) | A kind of preparation method of carbon coating nickel phosphide composite material nanometer particle and its application in preparing sodium-ion battery | |
| CN109256541A (en) | A kind of hard carbon cathode material | |
| CN108336338A (en) | A kind of preparation method and application that there are multi-layer pore space structure carbon coating cobalt sulfide/eight to vulcanize nine cobalt nano-particles | |
| CN104577072A (en) | Preparation method of graphene-oxide-based MoO2 high-performance electrode material of lithium/sodium ion battery | |
| CN111211290A (en) | High-performance quick-charging graphite lithium ion battery cathode and preparation method thereof | |
| CN102800858A (en) | Preparation method and purpose for iron oxide-based anode material for lithium ion battery | |
| CN110615480A (en) | Method for preparing layered lithium manganate material by dynamic hydrothermal method | |
| CN113707861A (en) | Nitrogen-doped carbon layer-coated cobalt oxide nanosheet and preparation method and energy storage application thereof | |
| CN107069029B (en) | A kind of lithium battery high-voltage anode material and preparation method thereof | |
| CN108598439A (en) | A kind of preparation method of tungstic acid/graphene composite negative pole | |
| CN106960947A (en) | Composite, its preparation method and application | |
| CN106981638A (en) | The method for depositing Nanometer Copper on iron phosphate lithium positive pole surface using magnetron sputtering technique | |
| CN109585833A (en) | Lithium-rich manganese-based modified material and preparation method thereof and positive electrode | |
| CN111261870B (en) | NASICON structure Na4CrMn(PO4)3Method for producing materials and use thereof | |
| CN106058195A (en) | Double-coated lithium vanadium phosphate anode material and preparation method thereof | |
| CN116565174A (en) | Silicon-carbon composite material, preparation method, silicon-based negative electrode and lithium ion battery | |
| CN108155022B (en) | Preparation method of lithium ion capacitor using microcrystalline graphite material | |
| CN104332612B (en) | P Modification carbon-coated lithium ion battery anode composite material and Preparation method and use | |
| CN110649250A (en) | Preparation method of graphene/sulfur composite material and application of graphene/sulfur composite material in lithium-sulfur battery | |
| CN110518194B (en) | Method for preparing core-shell silicon/carbon composite material by in-situ carbon coating and application thereof | |
| CN114843491A (en) | High-capacity and high-cycle-stability cathode material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |