CN104821401B - Two-dimensional lithium ion battery additive VC2 nanosheet and preparation method thereof - Google Patents
Two-dimensional lithium ion battery additive VC2 nanosheet and preparation method thereof Download PDFInfo
- Publication number
- CN104821401B CN104821401B CN201510236837.0A CN201510236837A CN104821401B CN 104821401 B CN104821401 B CN 104821401B CN 201510236837 A CN201510236837 A CN 201510236837A CN 104821401 B CN104821401 B CN 104821401B
- Authority
- CN
- China
- Prior art keywords
- nanometer sheet
- dimentional
- dimension
- lithium
- nanosheet
- 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.)
- Active
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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- 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 provides a two-dimensional lithium ion battery additive VC2 nanosheet and a preparation method thereof. The preparation method of the VC2 nanosheet comprises the following steps: (1) soaking a two-dimensional VAlC2 substrate material in an HF solution for 4-60h so as to obtain a mixed solution containing multiple layers of two-dimensional VC2; (2) centrifuging in an ultracentrifuge for 10-80h to obtain a precursor of a single-layer two-dimensional VC2 nanosheet; (3) washing to obtain the single-layer two-dimensional VC2 nanosheet; and (4) drying to obtain a two-dimensional lithium ion battery additive VC2 nanosheet. The primary diameter thickness of the VC2 nanosheet can be effectively controlled between 20nm and 300nm; when used as a lithium ion battery additive, the VC2 nanosheet has excellent charge-discharge capacity and rate performance and is capable of enhancing electrical conductivity and improving the electrochemical performance. The preparation method of the two-dimensional lithium ion battery additive VC2 nanosheet is simple in process step, low in synthesis temperature and short in reaction time, adopts easily available raw materials and can be industrialized conveniently.
Description
Technical field
The present invention relates to a kind of two-dimentional lithium ion battery additive VC2Nanometer sheet and preparation method thereof, and in particular to a kind of
Two-dimentional lithium ion battery additive VC2Nanometer sheet and its preparation method using chemical etching.
Background technology
Lithium-ion-power cell has overwhelming superiority in global video development of automobile industry, and grinding in lithium ion battery
In studying carefully, material conductivity difference is always the bottleneck problem for restricting its development, therefore, it is to determine lithium-ion electric to improve material conductivity
The good and bad key factor of pond combination property, its research is always the focus in the field.In recent years, two-dimension nano materials are unique with it
Physical and chemical performance, such as：Flexible, specific surface area is big, and avtive spot is more, and charged particle transmission performance is good etc., and is ground by vast
The person of studying carefully is of interest, and several typical two-dimension nano materials are such as：Graphene, MoS2、WS2Shown in energy storage field Deng material
Great application prospect.
Two-dimentional VC2Material is due to unique two-dimensional layered structure（Can provide lithium ion quick transmission channel）, it is excellent
Different electronic conductivity, potential high power capacity, in energy storage field（Lithium ion battery, sodium-ion battery, lithium-sulfur cell, super electricity
Container etc.）In highlighted huge application prospect.VC2Relative to graphite and class graphite inorganic material in structure（BN、MoS2Deng
There is strong covalent bond, interlayer has weaker Van der Waals force in layer）Not only there is strong covalent bond, also with strong metallic bond and
Ionic bond, it is thus impossible to simply produce VC using the method for mechanical stripping2Monolayer material.VC2The special knot of nano material
Structure, determines that material has the performance of many uniquenesses, and when being applied to li-ion electrode materials, storage lithium mechanism, electrochemical process are moved
Mechanics etc. is different from other materials.However, not yet having any on VC at present2Application of micron is in the report of lithium ion battery
Road.
In preparation, CN103641119A discloses the preparation method of a species grapheme material, is by Ti3AlC2In HF
Chemical etching is carried out in acid, Al is selectively etched away, obtain the class grapheme material, need to adopt in its preparation process
It is once that one more is in subsequent separation process, just to obtain during HF acid chemical etchings with ultrasonically treated twice
Individual layer two dimension Ti3C2Nanometer sheet, preparation process is complicated, and prepared Ti3C2Nanometer sheet not practical application.
The content of the invention
It is simple that the technical problems to be solved by the invention are to provide a kind of step, can be big when being applied to lithium ion battery
It is big to improve the electric conductivity of material, and it is efficiently modified the two-dimentional lithium ion battery additive VC of material electrochemical performance2Nanometer sheet and
Its simple preparation method.
The technical solution adopted for the present invention to solve the technical problems is as follows：A kind of two-dimentional lithium ion battery additive VC2
Nanometer sheet, is made in accordance with the following methods：
（1）By two-dimentional VAlC2Matrix material is placed in 4~60h of immersion in the HF solution that concentration is 0.008~0.5mol/L,
Multilayer two-dimension VC must be contained2Mixed solution；
（2）By step（1）Middle gained contains multilayer two-dimension VC2Mixed solution be placed in Ultracentrifuge with 10000
~80000 revs/min of rotating speed carries out 10~80h of centrifugal treating, obtains and contains individual layer two dimension VC2The presoma of nanometer sheet；
（3）By step（2）Gained contains individual layer two dimension VC2The presoma of nanometer sheet is washed, and obtains individual layer two dimension VC2Receive
Rice piece；
（4）By step（3）Gained individual layer two dimension VC2Nanometer sheet at 60~100 DEG C, dry 4~15h, obtain two-dimentional lithium from
Sub- additives for battery VC2Nanometer sheet.
Further, step（1）In, the concentration of the HF solution is 0.01~0.2mol/L（It is preferred that 0.05~0.15mol/
L）.By two-dimentional VAlC2It is to carry out chemical etching that matrix material is placed in the purpose soaked in HF solution, metal Al layer is removed, to obtain
Multilayer two-dimension VC must be contained2Frame material, if the concentration and soak time of HF solution is not in the scope, metal Al layer
Etching effect is not good.Two-dimentional VAlC2Consumption when matrix material soaks to HF solution is not required.
Further, step（1）In, the time of the immersion is 5~20h.
Further, step（2）In, the rotating speed of the centrifuge is 20000~60000 revs/min.To containing multilayer two-dimension
VC2Mixed solution to carry out the mesh of ultracentrifugation treatment be to multilayer two-dimension VC2Mechanical stripping is carried out, to obtain individual layer two dimension
VC2The presoma of nanometer sheet.
Further, step（2）In, the time of the centrifugation is 20~60h.
Research shows, if not using step（1）Described in 0.008~0.5mol/L HF concentration, the immersion of 4~60h when
Between, do not use step（2）Described in 10000~80000 revs/min rotating speed and the centrifugal treating time of 10~80h, will very
Seldom to VC2Nanometer sheet.
Step（3）In, the purpose of washing is primarily to removal Al may be transferred to individual layer two dimension VC after stripping2Nanometer
Metal impurities in the presoma of piece, using conventional laundry process.
Further, step（4）In, the dry temperature is 80~90 DEG C.
Further, step（4）In, the dry time is 5~10h.
VC of the present invention2The preparation method of nanometer sheet is by sour selective removal VAlC2Element al in material layer structure
Without destroying its layer structure, then individual layer two dimension VC is obtained by ultracentrifugation2The presoma of nanometer sheet.
Research shows, two dimension VC of the invention2Nanometer sheet has larger specific surface area, can increase and to be connect with electrolyte
Touch, the ion of liquid-solid two-phase is transmitted area and become big, electrode interface transmission performance can be effectively improved, so as to greatly reduce material
Interface resistance, be fully contacted with lithium ion battery active material and form a quick conductive network, ion can be accelerated
With the transmission of electronics.VC of the present invention2The primary particle size thickness of nanometer sheet can be effectively controlled between 20~300nm, as lithium from
During sub- additives for battery, in charge and discharge process, due to its quick conductive characteristic, the transmission of ion can be greatly speeded up, carried
The chemical property of high active material.The present invention is first by prepared VC2Nanometer sheet be applied in the form of additive lithium from
In sub- battery, can effectively shorten the diffusion length of lithium ion, accelerate its transmission rate, be conducive to improving the forthright again of material
Can, such as when with LiFePO4During as positive electrode, the specific discharge capacity of 0.1C is up to 170.8 mAh/g, the electric discharge specific volume of 1C
, up to 164.5 mAh/g, up to 140.7 mAh/g, the specific discharge capacity of 10C is up to 130.5 mAh/ for the specific discharge capacity of 5C for amount
G, illustrates that its charge/discharge capacity and high rate performance are excellent, compared with the battery for not adding additive, adds VC2Nanometer sheet additive
Afterwards, the specific discharge capacity of active material, high rate performance are all significantly improved and improve, and illustrate that the addition of VC2 nanometer sheets can be big
The big electric conductivity for improving active material.Two dimension lithium ion battery additive VC of the invention2The preparation method of nanometer sheet is harsh in HF
The erosion stage etches for autoreaction, only with a high speed centrifugation treatment, that is, has obtained individual layer two dimension VC2The forerunner of nanometer sheet
Body, eliminates repeated ultrasonic treatment, and step is simple, and synthesis temperature is low, and the reaction time is short, and raw material is easy to get, and is easy to industrialization.
Brief description of the drawings
Fig. 1 is the two-dimentional lithium ion battery additive VC obtained by the embodiment of the present invention 12The SEM diffraction patterns of nanometer sheet；
Fig. 2 is the two-dimentional lithium ion battery additive VC obtained by the embodiment of the present invention 22The SEM diffraction patterns of nanometer sheet.
Specific embodiment
With reference to embodiment and accompanying drawing, the invention will be further described.
The VAlC that the embodiment of the present invention is used2Matrix material, model ACS reagent, purity >=99% is purchased from
Sigma-Aldrich；Other chemical reagent for being used, unless otherwise specified, are obtained by routine business approach.
Embodiment 1
（1）By two-dimentional VAlC2Matrix material is placed in immersion 60h in the HF solution that concentration is 0.01mol/L and carries out chemical quarter
Etching off removes metal Al layer, obtains and contains multilayer two-dimension VC2Mixed solution；
（2）By step（1）Gained contains multilayer two-dimension VC2Mixed solution be placed in Ultracentrifuge with 50000 turns/
The rotating speed of minute carries out centrifugal treating 50h, obtains and contains individual layer two dimension VC2The presoma of nanometer sheet；
（3）By step（2）Gained contains individual layer two dimension VC2The presoma of nanometer sheet is washed, and obtains individual layer two dimension VC2Receive
Rice piece；
（4）By step（3）Gained individual layer two dimension VC2Nanometer sheet dries 5h at 100 DEG C, obtains two-dimentional lithium ion battery and adds
Plus agent VC2Nanometer sheet.
Obtained two-dimentional lithium ion battery additive VC2The SEM diffraction patterns of nanometer sheet as shown in figure 1, after testing, two dimension
Lithium ion battery additive VC2The primary particle size average thickness of nanometer sheet is 20nm.
The assembling of battery：The LiFePO4 of 0.24g is weighed respectively（LiFePO4）, phosphoric acid vanadium lithium（Li3V2(PO4)3）As just
Pole material, adds the above-mentioned prepared VC of 0.03g2Nanometer sheet and 0.03g PVDF（HSV-900）Make binding agent, after being fully ground
2mL NMP dispersion mixings are added, is sized mixing and be uniformly made anode pole piece after slurry on the Copper Foil of 16 μ m-thicks, in anaerobism glove box
With metal lithium sheet as negative pole, with Celgard 2300 as barrier film, 1mol/L LiPF6/EC:DMC:EMC（Volume ratio 1:1:1）For
Electrolyte, is assembled into the button cell of CR2025, by battery in 3.0~4.5V voltage ranges, 0.1C, 1C, 5C, 10C multiplying power
Under, its charge/discharge capacity and high rate performance are surveyed, as shown in table 1.
Embodiment 2
（1）By two-dimentional VAlC2Matrix material is placed in immersion 5h in the HF solution that concentration is 0.08mol/L and carries out chemical etching
Removal metal Al layer, obtains and contains multilayer two-dimension VC2Mixed solution；
（2）By step（1）Gained contains multilayer two-dimension VC2Mixed solution be placed in Ultracentrifuge with 10000 turns/
The rotating speed of minute carries out centrifugal treating 80h, obtains and contains individual layer two dimension VC2The presoma of nanometer sheet；
（3）By step（2）Gained contains individual layer two dimension VC2The presoma of nanometer sheet is washed, and obtains individual layer two dimension VC2Receive
Rice piece；
（4）By step（3）Gained individual layer two dimension VC2Nanometer sheet dries 15h at 60 DEG C, obtains two-dimentional lithium ion battery and adds
Plus agent VC2Nanometer sheet.
Obtained two-dimentional lithium ion battery additive VC2The SEM diffraction patterns of nanometer sheet as shown in Fig. 2 after testing, two dimension
Lithium ion battery additive VC2The primary particle size average thickness of nanometer sheet is 60nm.
The assembling of battery：The LiFePO4 of 0.24g is weighed respectively（LiFePO4）, phosphoric acid vanadium lithium（Li3V2(PO4)3）As just
Pole material, adds the above-mentioned prepared VC of 0.03g2Nanometer sheet and 0.03g PVDF（HSV-900）Make binding agent, after being fully ground
2mL NMP dispersion mixings are added, is sized mixing and be uniformly made anode pole piece after slurry on the Copper Foil of 16 μ m-thicks, in anaerobism glove box
With metal lithium sheet as negative pole, with Celgard 2300 as barrier film, 1mol/L LiPF6/EC:DMC:EMC（Volume ratio 1:1:1）For
Electrolyte, is assembled into the button cell of CR2025, by battery in 3.0~4.5V voltage ranges, 0.1C, 1C, 5C, 10C multiplying power
Under, its charge/discharge capacity and high rate performance are surveyed, as shown in table 1.
Embodiment 3
（1）By two-dimentional VAlC2Matrix material is placed in immersion 15h in the HF solution that concentration is 0.1mol/L and carries out chemical etching
Removal metal Al layer, obtains and contains multilayer two-dimension VC2Mixed solution；
（2）By step（1）Gained contains multilayer two-dimension VC2Mixed solution be placed in Ultracentrifuge with 30000 turns/
The rotating speed of minute carries out centrifugal treating 60h, obtains and contains individual layer two dimension VC2The presoma of nanometer sheet；
（3）By step（2）Gained contains individual layer two dimension VC2The presoma of nanometer sheet is washed, and obtains individual layer two dimension VC2Receive
Rice piece；
（4）By step（3）Gained individual layer two dimension VC2Nanometer sheet dries 10h at 80 DEG C, obtains two-dimentional lithium ion battery and adds
Plus agent VC2Nanometer sheet.
After testing, two-dimentional lithium ion battery additive VC2The primary particle size average thickness of nanometer sheet is 120nm.
The assembling of battery：The LiFePO4 of 0.24g is weighed respectively（LiFePO4）, phosphoric acid vanadium lithium（Li3V2(PO4)3）As just
Pole material, adds the above-mentioned prepared VC of 0.03g2Nanometer sheet and 0.03g PVDF（HSV-900）Make binding agent, after being fully ground
2mL NMP dispersion mixings are added, is sized mixing and be uniformly made anode pole piece after slurry on the Copper Foil of 16 μ m-thicks, in anaerobism glove box
With metal lithium sheet as negative pole, with Celgard 2300 as barrier film, 1mol/L LiPF6/EC:DMC:EMC（Volume ratio 1:1:1）For
Electrolyte, is assembled into the button cell of CR2025, by battery in 3.0~4.5V voltage ranges, 0.1C, 1C, 5C, 10C multiplying power
Under, its charge/discharge capacity and high rate performance are surveyed, as shown in table 1.
Embodiment 4
（1）By two-dimentional VAlC2Matrix material is placed in immersion 20h in the HF solution that concentration is 0.15mol/L and carries out chemical quarter
Etching off removes metal Al layer, obtains and contains multilayer two-dimension VC2Mixed solution；
（2）By step（1）Gained contains multilayer two-dimension VC2Mixed solution be placed in Ultracentrifuge with 60000 turns/
The rotating speed of minute carries out centrifugal treating 20h, obtains and contains individual layer two dimension VC2The presoma of nanometer sheet；
（3）By step（2）Gained contains individual layer two dimension VC2The presoma of nanometer sheet is washed, and obtains individual layer two dimension VC2Receive
Rice piece；
（4）By step（3）Gained individual layer two dimension VC2Nanometer sheet dries 15h at 100 DEG C, obtains two-dimentional lithium ion battery and adds
Plus agent VC2Nanometer sheet.
After testing, two-dimentional lithium ion battery additive VC2The primary particle size average thickness of nanometer sheet is 200nm.
The assembling of battery：The LiFePO4 of 0.24g is weighed respectively（LiFePO4）, phosphoric acid vanadium lithium（Li3V2(PO4)3）As just
Pole material, adds the above-mentioned prepared VC of 0.03g2Nanometer sheet and 0.03g PVDF（HSV-900）Make binding agent, after being fully ground
2mL NMP dispersion mixings are added, is sized mixing and be uniformly made anode pole piece after slurry on the Copper Foil of 16 μ m-thicks, in anaerobism glove box
With metal lithium sheet as negative pole, with Celgard 2300 as barrier film, 1mol/L LiPF6/EC:DMC:EMC（Volume ratio 1:1:1）For
Electrolyte, is assembled into the button cell of CR2025, by battery in 3.0~4.5V voltage ranges, 0.1C, 1C, 5C, 10C multiplying power
Under, its charge/discharge capacity and high rate performance are surveyed, as shown in table 1.
Embodiment 5
（1）By two-dimentional VAlC2Matrix material is placed in immersion 20h in the HF solution that concentration is 0.5mol/L and carries out chemical etching
Removal metal Al layer, obtains and contains multilayer two-dimension VC2Mixed solution；
（2）By step（1）Gained contains multilayer two-dimension VC2Mixed solution be placed in Ultracentrifuge with 80000 turns/
The rotating speed of minute carries out centrifugal treating 10h, obtains and contains individual layer two dimension VC2The presoma of nanometer sheet；
（3）By step（2）Gained contains individual layer two dimension VC2The presoma of nanometer sheet is washed, and obtains individual layer two dimension VC2Receive
Rice piece；
（4）By step（3）Gained individual layer two dimension VC2Nanometer sheet dries 15h at 90 DEG C, obtains two-dimentional lithium ion battery and adds
Plus agent VC2Nanometer sheet.
After testing, two-dimentional lithium ion battery additive VC2The primary particle size average thickness of nanometer sheet is 300nm.
The assembling of battery：The LiFePO4 of 0.24g is weighed respectively（LiFePO4）, phosphoric acid vanadium lithium（Li3V2(PO4)3）As just
Pole material, adds the above-mentioned prepared VC of 0.03g2Nanometer sheet and 0.03g PVDF（HSV-900）Make binding agent, after being fully ground
2mL NMP dispersion mixings are added, is sized mixing and be uniformly made anode pole piece after slurry on the Copper Foil of 16 μ m-thicks, in anaerobism glove box
With metal lithium sheet as negative pole, with Celgard 2300 as barrier film, 1mol/L LiPF6/EC:DMC:EMC（Volume ratio 1:1:1）For
Electrolyte, is assembled into the button cell of CR2025, by battery in 3.0~4.5V voltage ranges, 0.1C, 1C, 5C, 10C multiplying power
Under, its charge/discharge capacity and high rate performance are surveyed, as shown in table 1.
VC prepared by the embodiment 1~5 of table 12Nanometer sheet is used as chemical property during additive
Comparative example
The assembling of battery：The LiFePO4 of 0.24g is weighed respectively（LiFePO4）, phosphoric acid vanadium lithium（Li3V2(PO4)3）As just
Pole material, adds 0.03g PVDF（HSV-900）Make binding agent, 2mL NMP dispersion mixings are added after being fully ground, size mixing uniform
Anode pole piece is made after slurry on the Copper Foil of 16 μ m-thicks, with metal lithium sheet as negative pole in anaerobism glove box, with Celgard
2300 is barrier film, 1mol/L LiPF6/EC:DMC:EMC（Volume ratio 1:1:1）It is electrolyte, is assembled into the button electricity of CR2025
Pond, by battery in 3.0~4.5V voltage ranges, under 0.1C, 1C, 5C, 10C multiplying power, surveys its charge/discharge capacity and high rate performance,
Wherein, LiFePO4Specific discharge capacity under 0.1C, 1C, 5C, 10C is successively 142.8 mAh/g, 128.6 mAh/g, 89.5
mAh/g、60mAh/g；Li3V2(PO4)3Specific discharge capacity under 0.1C, 1C, 5C, 10C is successively 102.5 mAh/g, 88.5
mAh/g、61.3 mAh/g、42.7mAh/g。
As shown in Table 1, compared with the battery that comparative example does not add additive, VC is added2After nanometer sheet additive, active material
Specific discharge capacity, the high rate performance of material are all significantly improved and improve.Illustrate that prepared two dimension lithium ion battery of the invention adds
Plus agent VC2Nanometer sheet can improve the electric conductivity of lithium ion battery active material really, and be efficiently modified material electrochemical performance.
Claims (10)
1. a kind of two-dimentional anode material for lithium-ion batteries additive VC2Nanometer sheet, it is characterised in that be made in accordance with the following methods：
（1）By two-dimentional VAlC2Matrix material is placed in 4~60h of immersion in the HF solution that concentration is 0.008~0.5mol/L, must contain
Multilayer two-dimension VC2Mixed solution；
（2）By step（1）Middle gained contains multilayer two-dimension VC2Mixed solution be placed in Ultracentrifuge with 10000~
80000 revs/min of rotating speed carries out 10~80h of centrifugal treating, obtains and contains individual layer two dimension VC2The presoma of nanometer sheet；
（3）By step（2）Gained contains individual layer two dimension VC2The presoma of nanometer sheet is washed, and obtains individual layer two dimension VC2Nanometer sheet；
（4）By step（3）Gained individual layer two dimension VC2Nanometer sheet dries 4~15h at 60~100 DEG C, obtains two-dimentional lithium ion battery
Additive VC2Nanometer sheet.
2. two-dimentional anode material for lithium-ion batteries additive VC according to claim 12Nanometer sheet, it is characterised in that：Step
（1）In, the concentration of the HF solution is 0.01~0.2mol/L.
3. two-dimentional anode material for lithium-ion batteries additive VC according to claim 1 or claim 22Nanometer sheet, it is characterised in that：Step
Suddenly（1）In, the time of the immersion is 5~20h.
4. two-dimentional anode material for lithium-ion batteries additive VC according to claim 1 or claim 22Nanometer sheet, it is characterised in that：Step
Suddenly（2）In, the rotating speed of the centrifuge is 20000~60000 revs/min.
5. two-dimentional anode material for lithium-ion batteries additive VC according to claim 32Nanometer sheet, it is characterised in that：Step
（2）In, the rotating speed of the centrifuge is 20000~60000 revs/min.
6. two-dimentional anode material for lithium-ion batteries additive VC according to claim 1 or claim 22Nanometer sheet, it is characterised in that：Step
Suddenly（2）In, the time of the centrifugation is 20~60h.
7. two-dimentional anode material for lithium-ion batteries additive VC according to claim 32Nanometer sheet, it is characterised in that：Step
（2）In, the time of the centrifugation is 20~60h.
8. two-dimentional anode material for lithium-ion batteries additive VC according to claim 42Nanometer sheet, it is characterised in that：Step
（2）In, the time of the centrifugation is 20~60h.
9. two-dimentional anode material for lithium-ion batteries additive VC according to claim 1 or claim 22Nanometer sheet, it is characterised in that：Step
Suddenly（4）In, the dry temperature is 80~90 DEG C.
10. two-dimentional anode material for lithium-ion batteries additive VC according to claim 1 or claim 22Nanometer sheet, it is characterised in that：Step
Suddenly（4）In, the dry time is 5~10h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510236837.0A CN104821401B (en) | 2015-05-12 | 2015-05-12 | Two-dimensional lithium ion battery additive VC2 nanosheet and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510236837.0A CN104821401B (en) | 2015-05-12 | 2015-05-12 | Two-dimensional lithium ion battery additive VC2 nanosheet and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104821401A CN104821401A (en) | 2015-08-05 |
| CN104821401B true CN104821401B (en) | 2017-05-17 |
Family
ID=53731632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510236837.0A Active CN104821401B (en) | 2015-05-12 | 2015-05-12 | Two-dimensional lithium ion battery additive VC2 nanosheet and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104821401B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815698A (en) * | 2012-07-12 | 2012-12-12 | 同济大学 | Method for synthesizing two-dimensional carbide through template restriction |
| CN103641119B (en) * | 2013-12-03 | 2015-10-28 | 江苏大学 | The preparation method of one kind grapheme material |
| CN104538597B (en) * | 2014-12-23 | 2017-05-17 | 陕西科技大学 | Preparation method of snowflake titanium dioxide/two-dimensional nanometre titanium carbide composite material |
-
2015
- 2015-05-12 CN CN201510236837.0A patent/CN104821401B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104821401A (en) | 2015-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109192940B (en) | Titanium dioxide/graphene multi-element modified Mxene composite material and preparation method thereof | |
| TW201827125A (en) | Agent for dispersing electrically conductive carbon material, and dispersion of electrically conductive carbon material | |
| CN110492084B (en) | Spherical negative electrode composite material Si @ MXene with core-shell structure and preparation method thereof | |
| CN102569750A (en) | Cathode composite material of lithium ion battery and preparation method thereof | |
| CN104916824A (en) | Tin/oxidized graphene anode material for lithium battery and preparation method thereof | |
| Shangguan et al. | Evolution of spent LiFePO4 powders into LiFePO4/C/FeS composites: a facile and smart approach to make sustainable anodes for alkaline Ni-Fe secondary batteries | |
| CN110556530B (en) | Preparation method of molybdenum sulfide/three-dimensional macroporous graphene and lithium ion battery cathode material | |
| CN106356519A (en) | Preparation method of expanded graphite/silicon@carbon negative electrode material for lithium ion batteries | |
| CN104953186A (en) | Preparation technology of lithium ion battery and negative lithium supplementing device | |
| Feng et al. | In situ XRD observation of CuO anode phase conversion in lithium-ion batteries | |
| EP3306710A1 (en) | Negative electrode for lithium ion battery and method for preparing the same | |
| CN104518207B (en) | A kind of lithium ion battery anode active material and preparation method, anode and lithium ion battery | |
| CN105655589A (en) | Graphene composite material and preparation method thereof | |
| CN104916823A (en) | Silicon/graphene oxide anode material for lithium battery and preparation method thereof | |
| CN112331851A (en) | Graphite @ SiOx @ C composite negative electrode material and preparation method and application thereof | |
| Xue et al. | Controlled synthesis of alkalized Ti 3 C 2 MXene-supported β-FeOOH nanoparticles as anodes for lithium-ion batteries | |
| Liu et al. | Synthesis and characterization of SiO 2/Ti 3 C 2 anode materials for lithium-ion batteries via different methods | |
| CN104253275B (en) | For lithium battery or the binding agent of lithium-sulfur cell, pole piece and manufacture method and battery | |
| CN104183836A (en) | Positive electrode composite material for lithium sulfur battery | |
| CN105513827A (en) | (LMO-NCM-AC)/(LTO-AC) hybrid battery capacitor electrode material and electrode sheets | |
| CN102280635A (en) | Co3O4-C composite material and preparation method thereof and lithium battery and cathode thereof | |
| CN109346682B (en) | Preparation method of lithium ion battery cathode composite material | |
| Song et al. | Electrochemical preparation of lithium-Rich graphite anode for LiFePO 4 battery | |
| Li et al. | Synthesis of Si-Sb-ZnO composites as high-performance anodes for lithium-ion batteries | |
| CN104821401B (en) | Two-dimensional lithium ion battery additive VC2 nanosheet and preparation method thereof |
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 |