CN110061215A - A kind of composite construction and preparation method thereof for negative electrode of lithium ion battery - Google Patents
A kind of composite construction and preparation method thereof for negative electrode of lithium ion battery Download PDFInfo
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- CN110061215A CN110061215A CN201910335393.4A CN201910335393A CN110061215A CN 110061215 A CN110061215 A CN 110061215A CN 201910335393 A CN201910335393 A CN 201910335393A CN 110061215 A CN110061215 A CN 110061215A
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
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- 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
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- 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
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- 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 belongs to lithium ion battery correlative technology fields, the composite construction and preparation method thereof that it discloses a kind of for negative electrode of lithium ion battery, the composite construction includes nanoparticle and carbon nanosheet, and it is core-shell structure that the nanoparticle, which is dispersed on the carbon nanosheet,；The carbon nanosheet is three-dimensional porous nitrogen-doped carbon nanometer sheet；The nanoparticle includes antimony oxide shell and the antimony core in the antimony oxide shell, the antimony core and the antimony oxide shell buffer layer each other.Buffer layer, collaboration storage lithium alleviate Volumetric expansion to antimony core and antimony oxide shell of the invention each other；Three-dimensional porous nitrogen-doped carbon nanometer sheet further ensures the stability and high rate performance of composite construction as the substrate and conductive frame for loading the nanoparticle, and N doping provides more storage lithium active sites, and the electric conductivity of composite construction is increased, provides guarantee for the long circulating stability of material.
Description
Technical field
The invention belongs to lithium ion battery correlative technology fields, are used for negative electrode of lithium ion battery more particularly, to one kind
Composite construction and preparation method thereof.
Background technique
Currently, with the rapid development of society, demand of the mankind to the energy is growing, at the same time, coal, petroleum,
Gradually using up for the fossil energies such as natural gas is urgently to be resolved with problem of environmental pollution, and the energy for developing green non-pollution has been
The focal point of various countries.The energy density of lithium ion battery Yin Qigao, small self discharge, the cycle life of length and environmental-friendly
Etc. advantages applied on many fields.
In recent years, use of the lithium ion battery on electric car and plug-in hybrid power type automobile had further pushed new
The R&D work of type high performance lithium ion battery electrode material.Since the theoretical specific capacity of commercialization negative electrode material graphite is lower,
High rate performance is poor, it is difficult to meet the performance requirement of power battery, therefore develop new high-performance, high stability and safety
Negative electrode of lithium ion battery is extremely urgent.
In order to alleviate the Volumetric expansion of antimony base cathode, conventional way is to regulate and control to its pattern, such as design
Core-shell structure etc., but often synthesis step is more many and diverse, and charge/discharge capacity and cycle performance are still to be improved.Correspondingly, originally
There is a kind of technologies of the composite construction for negative electrode of lithium ion battery for developing better performances and preparation method thereof to need in field
It asks.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of for negative electrode of lithium ion battery
A kind of performance is studied and devised to composite construction and preparation method thereof based on the work characteristics of existing negative electrode of lithium ion battery
The preferable composite construction and preparation method thereof for being used for negative electrode of lithium ion battery.The composite construction is core-shell structure, nanometer
The antimony core and antimony oxide shell buffer layer each other of grain alleviates Volumetric expansion with collaboration storage lithium；Three-dimensional porous nitrogen-doped carbon is received
Rice piece further ensures the stability and high rate performance of composite construction as the substrate and conductive frame for loading the nanoparticle, and
N doping provides more storage lithium active sites, and increases the electric conductivity of composite construction.
To achieve the above object, according to one aspect of the present invention, a kind of answering for negative electrode of lithium ion battery is provided
Structure is closed, the composite construction includes nanoparticle and carbon nanosheet, and the nanoparticle is dispersed on the carbon nanosheet,
For core-shell structure；The carbon nanosheet is three-dimensional porous nitrogen-doped carbon nanometer sheet；The nanoparticle includes antimony oxide shell and position
Antimony core in the antimony oxide shell, the antimony core and the antimony oxide shell buffer layer each other.
Further, the antimony oxide shell with a thickness of 5nm~30nm；The diameter of the antimony core is 10nm~50nm.
Further, the carbon nanosheet with a thickness of 10nm~20nm.
Other side according to the invention provides a kind of preparation side of composite construction for negative electrode of lithium ion battery
Method, the preparation method are used to prepare the composite construction as described above for being used for negative electrode of lithium ion battery.
Further, method includes the following steps: firstly, antimonic salt, nitrogen source presoma, sodium chloride template are dissolved
Disperse, and obtained solution is stirred, is freeze-dried to obtain powdered product；Then, by obtained powdered product pre-
Determine to calcine, wash and dried to obtain the composite construction for negative electrode of lithium ion battery under atmosphere.
Further, natural polymer carbon source presoma, nitrogen source presoma and sodium chloride is taken to be dissolved dense to be made into
Spend the natural polymer carbon source presoma for being 0.01mol/L~0.03mol/L, concentration is 0.005mol/L~0.01mol/L's
The mixed aqueous solution for the sodium chloride that nitrogen source presoma and concentration are 0.02g/mL~0.1g/mL；It then, is 0.01mol/ by concentration
The ethanol solution of the antimonic salt of L~0.1mol/L be added drop-wise to after the mixed aqueous solution at 60 DEG C~80 DEG C magnetic agitation 10h~
20h, solution to be obtained carries out freeze-drying process when being evaporated to 1/8th of original solution to a quarter, and will obtain
Product carries out high temperature cabonization processing to obtain final powdered product.
Further, the atmosphere of the high temperature cabonization processing is nitrogen or argon hydrogen gaseous mixture, and the time is 1h~3h, temperature
It is 500 DEG C~700 DEG C.
Further, the natural polymer carbon source presoma is sodium alginate, cellulose, chitin, lignin, shell gather
One or more of sugar.
Further, the antimonic salt is one of antimony trichloride, antimony sulfate, nitric acid antimony and antimony acetate or several；Institute
Stating nitrogen source presoma is one or more of cyanamide, melamine, chitosan, urea.
Further, the predetermined atmosphere is argon nitrogen atmosphere, and the calcination temperature that when calcining uses is forged for 500 DEG C~800 DEG C
The burning time is 1h~3h；For the drying temperature used when drying for 50 DEG C~70 DEG C, drying time is 10h~12h.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, use provided by the invention
It is mainly had the advantages that in composite construction of negative electrode of lithium ion battery and preparation method thereof
1. the carbon nanosheet is three-dimensional porous nitrogen-doped carbon nanometer sheet, the substrate and conductive pane as load nanoparticle
Frame further ensures the stability of structure and the high rate performance of material, and N doping provides more storage lithium active sites simultaneously
And increase the electric conductivity of material.
It is core-shell structure 2. the nanoparticle is dispersed on the carbon nanosheet, the nanoparticle includes oxidation
Buffer layer, collaboration store up lithium with slow each other for antimony shell and the antimony core in the antimony oxide shell, the antimony core and the antimony oxide shell
Volumetric expansion is solved, guarantee is provided for the long circulating stability of material, improves positive electrode performance.
3. it is larger to be freeze-dried obtained electrode material specific surface area that the present invention using sodium chloride does template, conducive to ion
And electron-transport, help to improve the high rate performance of material.
4. carbon source selects natural polymer biomaterial sodium alginate, the raw material is environmental-friendly pollution-free, cheap and easy to get.
5. the preparation method is reproducible, environmentally protective, the electrode material being prepared has higher reversible specific volume
Amount and better cyclical stability.
Detailed description of the invention
Fig. 1 is the flow diagram provided by the present invention for the preparation method of the composite construction of negative electrode of lithium ion battery；
Fig. 2A and Fig. 2 B is prepared using the preparation method of the composite construction for negative electrode of lithium ion battery in Fig. 1
Composite construction different amplification under scanning electron microscope (SEM) photograph；
Fig. 3 A, Fig. 3 B, Fig. 3 C and Fig. 3 D are transmission electron microscope of the composite construction under different amplification in Fig. 2 respectively
Figure；
Fig. 4 is the difference being prepared using the preparation method of the composite construction for negative electrode of lithium ion battery in Fig. 1
The charging and discharging curve figure of the composite construction of raw material components, wherein Sb-C-N-1-2-1 indicates antimony chloride, sodium alginate and cyanamide
Molar ratio is 1:2:1, and corresponding first charge-discharge coulombic efficiency is 58.7%；Sb-C-N-1-3-1 indicates antimony chloride, alginic acid
The molar ratio of sodium and cyanamide is 1:3:1, and corresponding first charge-discharge coulombic efficiency is 61.3%；Sb-C-N-1-4-1 indicates chlorination
The molar ratio of antimony, sodium alginate and cyanamide is 1:4:1, and corresponding first charge-discharge coulombic efficiency is 57.4%；
Fig. 5 is the difference being prepared using the preparation method of the composite construction for negative electrode of lithium ion battery in Fig. 1
The high rate performance schematic diagram of the composite construction of the composite construction of raw material components；
Fig. 6 is the difference being prepared using the preparation method of the composite construction for negative electrode of lithium ion battery in Fig. 1
The cycle performance schematic diagram of the composite construction of the composite construction of raw material components.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
Please refer to Fig. 2A, Fig. 2 B, Fig. 3 A, Fig. 3 B, Fig. 3 C, Fig. 3 D, Fig. 4, Fig. 5 and Fig. 6, provided by the present invention for lithium from
The composite construction of sub- battery cathode, the composite construction include nanoparticle and carbon nanosheet, and the nanoparticle is dispersed in institute
It states on carbon nanosheet.The nanoparticle is core-shell structure, is using antimony oxide as shell (as antimony oxide shell), using antimony as core
The nanoparticle of (as antimony core).
In present embodiment, the carbon nanosheet with a thickness of 10nm~20nm；The antimony oxide shell with a thickness of 5nm~
30nm；The diameter of the antimony core is 10nm~50nm；The nanometer sheet is three-dimensional porous nitrogen-doped carbon nanometer sheet, and N doping provides
More storage lithium active sites and increase the electric conductivity of material.The antimony core and the antimony oxide shell buffer layer each other,
With collaboration storage lithium and then alleviate Volumetric expansion.
Referring to Fig. 1, the present invention also provides a kind of preparation method of composite construction for negative electrode of lithium ion battery, it should
Preparation method the following steps are included:
Antimonic salt, nitrogen source presoma, sodium chloride template are carried out dissolution dispersion, and obtained solution are stirred by step 1
It mixes, be freeze-dried to obtain powdered product.
Specifically, natural polymer carbon source presoma, nitrogen source presoma and sodium chloride is taken to be dissolved in the water of certain volume
In be made into concentration for the natural polymer carbon source presoma of 0.01mol/L~0.03mol/L, concentration for 0.005mol/L~
The nitrogen source presoma and concentration of 0.01mol/L is the mixed solution of the sodium chloride of 0.02g/mL~0.1g/mL；Then, by concentration
The magnetic at 60 DEG C~80 DEG C is slowly dropped to after above-mentioned mixed solution for the ethanol solution of the antimonic salt of 0.01mol/L~0.1mol/L
Power stirs 10h~20h, carries out freeze-drying process, and general when solution is evaporated to 1/8th of original solution to a quarter
Obtained product carries out high temperature cabonization and handles to obtain final powdered product.
In present embodiment, the antimonic salt is one of antimony trichloride, antimony sulfate, nitric acid antimony and antimony acetate or several
Kind；The natural polymer carbon source presoma is one of sodium alginate, cellulose, chitin, lignin, chitosan or several
Kind；The nitrogen source presoma is one or more of cyanamide, melamine, chitosan, urea.
In present embodiment, the atmosphere of the high temperature cabonization processing is nitrogen or argon hydrogen gaseous mixture, high temperature cabonization processing
Time be 1h~3h；The temperature of high temperature cabonization processing is 500 DEG C~700 DEG C.
Obtained powdered product is calcined under predetermined atmosphere, washed and dried to obtain being used for lithium-ion electric by step 2
The composite construction of pond cathode.
Specifically, the predetermined atmosphere is argon nitrogen atmosphere, and the calcination temperature that when calcining uses is calcined for 500 DEG C~800 DEG C
Time is 1h~3h；It is washed using distilled water；For 50 DEG C~70 DEG C, drying time is the drying temperature used when drying
10h~12h.
With several specific embodiments, the present invention is further described in detail below.
Embodiment 1
The preparation method for the composite construction for negative electrode of lithium ion battery that the embodiment of the present invention 1 provides mainly includes following
Step:
S1 takes natural polymer carbon source presoma, nitrogen source presoma and sodium chloride to be dissolved in 300ml water with all day long
The concentration of right macromolecule carbon source presoma is 0.01mol/L, the concentration of nitrogen source presoma is 0.01mol/L, the concentration of sodium chloride
For the mixed solution of 0.02g/mL；Then, the ethanol solution for the antimonic salt that 100ml concentration is 0.01mol/L is slowly dropped to
State in mixed solution, and by obtained solution at 60 DEG C magnetic agitation 12h to obtain milky uniform solution.
Solution obtained in step S1 is warming up to 80 DEG C and open stirring evaporation, until solution remains original solution by S2
After 1/8th (i.e. 80ml), refrigerator freezing 10h is transferred them to, then obtained solid is placed into freeze drying box and is carried out
10h's goes water dry, to obtain white powder.
Obtained white powder is placed under argon nitrogen atmosphere, is sintered 2h at 700 DEG C, and obtained sample is used by S3
50 DEG C of vacuum oven 11h is put into after distillation water washing to get antimony/antimony oxide nuclear shell structure nano grain and carbon nanometer is arrived
The composite construction of piece.
Embodiment 2
The preparation method for the composite construction for negative electrode of lithium ion battery that the embodiment of the present invention 2 provides mainly includes following
Step:
S1 takes natural polymer carbon source presoma, nitrogen source presoma and sodium chloride to be dissolved in 300ml water with all day long
The concentration of right macromolecule carbon source presoma is 0.02mol/L, the concentration of nitrogen source presoma is 0.008mol/L, the concentration of sodium chloride
For the mixed solution of 0.08g/mL；Then, the ethanol solution for the antimonic salt that 100ml concentration is 0.1mol/L is slowly dropped to above-mentioned
In mixed solution, and by obtained solution at 70 DEG C magnetic agitation 10h to obtain milky uniform solution.
Solution obtained in step S1 is warming up to 80 DEG C and open stirring evaporation, until solution remains original solution by S2
After a quarter (i.e. 160ml), transfer them to refrigerator freezing 10h, then by obtained solid be placed into freeze drying box into
Row 10h's goes water dry, to obtain white powder.
Obtained white powder is placed under argon nitrogen atmosphere, is sintered 2h at 500 DEG C, and obtained sample is used by S3
60 DEG C of vacuum oven 10h is put into after distillation water washing to get antimony/antimony oxide nuclear shell structure nano grain and carbon nanometer is arrived
The composite construction of piece.
Embodiment 3
The preparation method for the composite construction for negative electrode of lithium ion battery that the embodiment of the present invention 3 provides mainly includes following
Step:
S1 takes natural polymer carbon source presoma, nitrogen source presoma and sodium chloride to be dissolved in 300ml water with all day long
The concentration of right macromolecule carbon source presoma is 0.03mol/L, the concentration of nitrogen source presoma is 0.01mol/L, the concentration of sodium chloride
For the mixed solution of 0.1g/mL；Then, the ethanol solution for the antimonic salt that 100ml concentration is 0.07mol/L is slowly dropped to above-mentioned
In mixed solution, and by obtained solution at 80 DEG C magnetic agitation 15h to obtain milky uniform solution.
Solution obtained in step S1 is warming up to 80 DEG C and open stirring evaporation, until solution remains original solution by S2
After 1/8th (i.e. 80ml), refrigerator freezing 10h is transferred them to, then obtained solid is placed into freeze drying box and is carried out
10h's goes water dry, to obtain white powder.
Obtained white powder is placed under argon nitrogen atmosphere, is sintered 1.5h, and the sample that will be obtained at 600 DEG C by S3
50 DEG C of vacuum oven 12h is put into after being washed with distilled water to receive to get to antimony/antimony oxide nuclear shell structure nano grain with carbon
The composite construction of rice piece.
Embodiment 4
The preparation method for the composite construction for negative electrode of lithium ion battery that the embodiment of the present invention 4 provides mainly includes following
Step:
S1 takes natural polymer carbon source presoma, nitrogen source presoma and sodium chloride to be dissolved in 300ml water with all day long
The concentration of right macromolecule carbon source presoma is 0.03mol/L, the concentration of nitrogen source presoma is 0.005mol/L, the concentration of sodium chloride
For the mixed solution of 0.02g/mL；Then, the ethanol solution for the antimonic salt that 100ml concentration is 0.01mol/L is slowly dropped to
State in mixed solution, and by obtained solution at 60 DEG C magnetic agitation 20h to obtain milky uniform solution.
Solution obtained in step S1 is warming up to 80 DEG C and open stirring evaporation, until solution remains original solution by S2
After 1/8th (i.e. 80ml), refrigerator freezing 10h is transferred them to, then obtained solid is placed into freeze drying box and is carried out
10h's goes water dry, to obtain white powder.
Obtained white powder is placed under argon nitrogen atmosphere, is sintered 1h at 700 DEG C, and obtained sample is used by S3
60 DEG C of vacuum oven 11h is put into after distillation water washing to get antimony/antimony oxide nuclear shell structure nano grain and carbon nanometer is arrived
The composite construction of piece.
Provided by the present invention for the composite construction and preparation method thereof of negative electrode of lithium ion battery, which uses core
Shell structure has dissolved Volumetric expansion to a certain extent, and using nanometer sheet as carrier, thus further ensures multiple
Close the stability and high rate performance of structure.In addition, the simple process of the preparation method, easy to implement, reproducibility is preferable.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of composite construction for negative electrode of lithium ion battery, it is characterised in that:
The composite construction includes nanoparticle and carbon nanosheet, and the nanoparticle is dispersed on the carbon nanosheet, is
Core-shell structure；The carbon nanosheet is three-dimensional porous nitrogen-doped carbon nanometer sheet；
The nanoparticle includes antimony oxide shell and the antimony core in the antimony oxide shell, the antimony core and the antimony oxide shell
Buffer layer each other.
2. being used for the composite construction of negative electrode of lithium ion battery as described in claim 1, it is characterised in that: the antimony oxide shell
With a thickness of 5nm~30nm；The diameter of the antimony core is 10nm~50nm.
3. being used for the composite construction of negative electrode of lithium ion battery as claimed in claim 2, it is characterised in that: the carbon nanosheet
With a thickness of 10nm~20nm.
4. a kind of preparation method of the composite construction for negative electrode of lithium ion battery, it is characterised in that: the preparation method is used for
Prepare the described in any item composite constructions for negative electrode of lithium ion battery of claim 1-3.
5. the preparation method for the composite construction of negative electrode of lithium ion battery as claimed in claim 4, it is characterised in that: the party
Method the following steps are included: firstly, antimonic salt, nitrogen source presoma, sodium chloride template are carried out dissolution dispersion, and by obtained solution into
Row stirring is freeze-dried to obtain powdered product；Then, obtained powdered product is calcined under predetermined atmosphere, washed and dried
It does to obtain the composite construction for negative electrode of lithium ion battery.
6. the preparation method for the composite construction of negative electrode of lithium ion battery as claimed in claim 5, it is characterised in that: take day
Right macromolecule carbon source presoma, nitrogen source presoma and sodium chloride dissolved be made into concentration for 0.01mol/L~
The natural polymer carbon source presoma of 0.03mol/L, the nitrogen source presoma and concentration that concentration is 0.005mol/L~0.01mol/L
For the mixed aqueous solution of the sodium chloride of 0.02g/mL~0.1g/mL；Then, the antimony for being 0.01mol/L~0.1mol/L by concentration
The ethanol solution of salt is added drop-wise to after the mixed aqueous solution magnetic agitation 10h~20h at 60 DEG C~80 DEG C, and solution to be obtained steams
Freeze-drying process is carried out when being dealt into 1/8th of original solution to a quarter, and obtained product is carried out at high temperature cabonization
Reason is to obtain final powdered product.
7. the preparation method for the composite construction of negative electrode of lithium ion battery as claimed in claim 6, it is characterised in that: described
The atmosphere of high temperature cabonization processing is nitrogen or argon hydrogen gaseous mixture, and the time is 1h~3h, and temperature is 500 DEG C~700 DEG C.
8. the preparation method for the composite construction of negative electrode of lithium ion battery as claimed in claim 6, it is characterised in that: described
Natural polymer carbon source presoma is one or more of sodium alginate, cellulose, chitin, lignin, chitosan.
9. the preparation method for the composite construction of negative electrode of lithium ion battery as claimed in claim 5, it is characterised in that: described
Antimonic salt is one of antimony trichloride, antimony sulfate, nitric acid antimony and antimony acetate or several；The nitrogen source presoma is cyanamide, three
One or more of poly cyanamid, chitosan, urea.
10. the preparation method for the composite construction of negative electrode of lithium ion battery as claimed in claim 5, it is characterised in that: institute
Stating predetermined atmosphere is argon nitrogen atmosphere, and the calcination temperature that when calcining uses is 500 DEG C~800 DEG C, and calcination time is 1h~3h；Drying
The drying temperature of Shi Caiyong is 50 DEG C~70 DEG C, and drying time is 10h~12h.
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| CN110697717A (en) * | 2019-09-12 | 2020-01-17 | 东北大学秦皇岛分校 | Biological morph-genetic structure SbC battery negative electrode material and preparation method thereof |
| CN110767885A (en) * | 2019-09-26 | 2020-02-07 | 天津大学 | Preparation of Embedded Sb @ Sb2O3Method for forming three-dimensional microspheres surrounded by nitrogen-doped carbon nanosheets of core-shell structure nanoparticles |
| CN111313026A (en) * | 2020-02-26 | 2020-06-19 | 扬州大学 | Porous nitrogen-doped carbon/amorphous antimony compound, preparation method and application |
| CN111362249A (en) * | 2020-02-24 | 2020-07-03 | 中国科学院深圳先进技术研究院 | Two-dimensional porous nitrogen-doped carbon, preparation method thereof and application thereof in lithium ion battery |
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| CN110697717A (en) * | 2019-09-12 | 2020-01-17 | 东北大学秦皇岛分校 | Biological morph-genetic structure SbC battery negative electrode material and preparation method thereof |
| CN110767885A (en) * | 2019-09-26 | 2020-02-07 | 天津大学 | Preparation of Embedded Sb @ Sb2O3Method for forming three-dimensional microspheres surrounded by nitrogen-doped carbon nanosheets of core-shell structure nanoparticles |
| CN110767885B (en) * | 2019-09-26 | 2022-07-08 | 天津大学 | Preparation of Embedded Sb @ Sb2O3Method for forming three-dimensional microspheres surrounded by nitrogen-doped carbon nanosheets of core-shell structure nanoparticles |
| CN111362249A (en) * | 2020-02-24 | 2020-07-03 | 中国科学院深圳先进技术研究院 | Two-dimensional porous nitrogen-doped carbon, preparation method thereof and application thereof in lithium ion battery |
| CN111313026A (en) * | 2020-02-26 | 2020-06-19 | 扬州大学 | Porous nitrogen-doped carbon/amorphous antimony compound, preparation method and application |
| CN111313026B (en) * | 2020-02-26 | 2022-07-05 | 扬州大学 | Porous nitrogen-doped carbon/amorphous antimony compound, preparation method and application |
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