CN105406065A - SnS2-C negative electrode nanocomposite and preparation method and application therefor - Google Patents
SnS2-C negative electrode nanocomposite and preparation method and application therefor Download PDFInfo
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- CN105406065A CN105406065A CN201510857468.7A CN201510857468A CN105406065A CN 105406065 A CN105406065 A CN 105406065A CN 201510857468 A CN201510857468 A CN 201510857468A CN 105406065 A CN105406065 A CN 105406065A
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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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- 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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- 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
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/581—Chalcogenides or intercalation compounds thereof
- H01M4/5815—Sulfides
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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
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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- H—ELECTRICITY
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- 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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- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses an SnS2-C negative electrode nanocomposite and a preparation method and an application therefor. The composite negative electrode material consists of SnS2 nanoparticles and a carbon material wrapping the SnS2 nanoparticles; the grain diameter of the SnS2 nanoparticles is less than 100 nm, and the SnS2 nanoparticles are uniformly distributed in the carbon material; and the mass ratio of the SnS2 nanoparticles to the carbon material is 0.625-12.5:1. The preparation method for the SnS2-C negative electrode nanocomposite comprises the following steps: performing ball milling on stannic disulphide for the first time to obtain the SnS2 nanoparticles; adding the SnS2 nanoparticles into a glucose solution for performing ball milling for the second time to obtain a mixture; and drying the mixture and then performing thermal treatment on the dried mixture to obtain the SnS2-C nanocomposite. The SnS2-C negative electrode nanocomposite is high in circulation rate capability, high in capacity retention ratio, can be applied to the field of a lithium ion battery, and is bright in the application and industrial prospects.
Description
Technical field
The present invention relates to a kind of SnS
2-C nano composite negative pole material and preparation method thereof, belongs to technical field of lithium ion battery electrode.
Background technology
Lithium ion battery, as the efficient chemical energy of one and electric transformation of energy memory device, is considered to the important accumulation power supply of the new forms of energy such as solar energy, wind energy and the first-selected electrical source of power of electric automobile, causes the great attention of countries in the world.Since last century, the nineties realized commercialization, lithium ion battery has been widely used in the portable type electronic product such as notebook computer, mobile phone.Flourish along with the regenerative resources such as solar energy and electric automobile, to have high specific energy, the long-life, high security, high transformation efficiency, low cost the demand of secondary cell day by day urgent, and conventional lithium ion battery cannot meet the needs of current social, the new type lithium ion battery of exploitation excellent performance is extremely urgent.
In recent years, in order to improve the energy density of lithium ion battery, power density, cycle performance and security performance reliably, negative material receives extensive concern as the key components of lithium ion battery.At present, the widely used lithium ion battery negative material of commercialization mainly contains two classes: Delanium and modified natural graphite, and theoretical specific capacity is 372mAhg
-1; Lithium titanate (the Li of cubic spinel structure
4ti
5o
12), theoretical specific capacity is 175mAhg
-1.Visible, the theoretical specific capacity of this bi-material is all lower, the demand for development of high power capacity, high power, long-life, high Safety Secondary Battery can not be met, govern the lifting of lithium battery performance, thus novel cell negative electrode material becomes one of current research important directions, generally believes that more promising is some New Type of Carbon sills and the alloy type material based on alloying storage lithium mechanism.
At present, due to SnS
2the energy gap (Eg=2.2eV) of material is positioned at semiconductor scope, and it also has application potential in fields such as various photoelectricity (photodetector, photoconductor, luminescence generated by light, photocatalysis etc.), biology sensor and adsorbents.And the CdI2 type SnS of hexagonal structure
2compound, the space group of this structure is P-3m1 (No. 164, structure cell ginseng a=5.3645nm, c=5.5898nm), wherein the Sn atom of every layer is connected with upper and lower two-layer closely stacking S atom by stronger Sn-S covalent bond, and the S atom between different layers is then be connected by more weak Van der Waals force.Lithium ion is made to be easy to be inserted into SnS
2matrix in participate in electrochemical reaction, thus it is active to make it have storage lithium, be conducive to the embedding of lithium ion, and more space can be provided for Lithium-ion embeding, as having higher specific capacity during lithium ion battery negative, therefore, about its structure and pattern, the research to Electrochemical Performances becomes focus
When material reaches nano-scale, lithium ion diffusion admittance shortens, and effectively improves the conductivity of material, thus significantly improve battery fast charging and discharging performance, still can play higher chemical property under cryogenic, therefore, nanometer is the important directions of li-ion electrode materials development simultaneously.
Common preparation SnS
2the method of nanostructure has gas-phase reaction method, high temperature solid-state method, thermal evaporation, template, hydro-thermal reaction method, sonochemistry reaction method and soft solution radical reaction method.But the nano material prepared by these methods also exists some shortcomings, such as high production cost, too low output, preparation technology's more complicated, these shortcomings limit their application greatly.Therefore adopt simpler method to obtain the nano material with ad hoc structure still to have very important significance on its embody rule.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is to provide a kind of SnS
2-C nano composite negative pole material, nanometer SnS in this material
2uniform particles is distributed in material with carbon element, has good chemical property, can be applicable to field of lithium ion battery.
Two of object of the present invention is to provide a kind of above-mentioned SnS
2the preparation method of-C nano composite negative pole material.The method is simple, obtained SnS
2-C nano composite negative pole material chemical property is good.
Three of object of the present invention is to provide above-mentioned SnS
2the application of-C nano composite negative pole material.
For achieving the above object, the present invention is by the following technical solutions:
A kind of SnS
2-C nano composite negative pole material, by nanometer SnS
2particle and coated described nanometer SnS
2the material with carbon element composition of particle, wherein, described nanometer SnS
2the particle diameter of particle is below 100nm (such as 10nm, 15nm, 20nm, 25nm, 30nm, 35nm, 40nm, 45nm, 50nm, 55nm, 60nm, 65nm, 70nm, 75nm, 80nm, 85nm, 90nm, 95nm, 98nm), and is uniformly distributed in described material with carbon element; Described SnS
2be 0.625-12.5:1 (such as 0.7:1,0.9:1,1.2:1,1.5:1,2.0:1,2.5:1,3:1,3.5:1,4:1,4.5:1,5.5:1,6.5:1,7.5:1,8.5:1,9.5:1,10.5:1,12:1) with the mass ratio of described material with carbon element.In above-mentioned composite negative pole material, described material with carbon element is preferably amorphous carbon; Described nanometer SnS
2the particle diameter of particle is preferably 20-70nm.
SnS provided by the invention
2nanometer SnS in-C nano composite negative pole material
2grain diameter at below 100nm, and is uniformly distributed in the material with carbon element of good conductivity, and this structure can alleviate SnS in charge and discharge process
2the bulk effect of particle, can strengthen again the wettability of electrolyte, is conducive to the conduction of lithium ion; Material has larger specific area simultaneously, thus obtains good chemical property.Enhance structural stability by complex amorphous carbon, improve the electrical conductance of material, thus enhance its chemical property.
Above-mentioned SnS
2the preparation method of-C nano composite negative pole material, specifically comprises the steps:
Step one, by stannic disulfide (SnS
2) load ball grinder and be placed on ball mill and carry out first time ball milling, obtain nanometer SnS
2particle;
Step 2, first by described nanometer SnS
2particle adds in glucose solution, and then loading ball grinder is placed on ball mill and carries out second time ball milling, obtains mixture;
Step 3, the described mixture first step 2 obtained carries out drying, then dried material is heat-treated obtained described SnS under non-oxide protective atmosphere
2-C nano composite material.
Above-mentioned SnS
2the preparation method of-C nano composite negative pole material, as a kind of preferred implementation, described first time ball milling and/or described second time ball milling carry out in non-oxide protective atmosphere.
Above-mentioned SnS
2the preparation method of-C nano composite negative pole material, as a kind of preferred implementation, in step one, described first time the ratio of grinding media to material of ball milling be 10-60:1 (such as 12:1,15:1,18:1,20:1,25:1,30:1,35:1,40:1,45:1,50:1,55:1,58:1).
Above-mentioned SnS
2the preparation method of-C nano composite negative pole material, as a kind of preferred implementation, in step, described first time, the rotating speed of ball milling was 350-500rpm (such as 360rpm, 380rpm, 400rpm, 420rpm, 440rpm, 460rpm, 480rpm, 490rpm), and the time of ball milling described first time is 10-50h (such as 12h, 15h, 18h, 21h, 25h, 30h, 35h, 40h, 45h, 48h).
Business-like stannic disulfide ball milling is mainly become nanometer SnS by ball milling for the first time
2particle, makes its particle diameter at below 100nm.
Above-mentioned SnS
2the preparation method of-C nano composite negative pole material, as a kind of preferred implementation, in step 2, the mass ratio of described stannic disulfide and described glucose is 0.25-5:1 (such as 0.5:1,0.8:1,1:1,1.5:1,1.8:1,2.2:1,2.5:1,2.8:1,3.2:1,3.5:1,3.8:1,4.2:1,4.5:1,4.8:1).
Above-mentioned SnS
2the preparation method of-C nano composite negative pole material, in step 2, the glucose in described glucose solution can with sucrose or/and starch in replace.
Above-mentioned SnS
2the preparation method of-C nano composite negative pole material, described glucose solution is preferably D/W.The performance of the composite negative pole material that D/W concentration obtains for employing preparation method of the present invention is substantially without impact; The carbon source used in preparation method of the present invention and glucose low price, cost is low.
Above-mentioned SnS
2the preparation method of-C nano composite negative pole material, as a kind of preferred implementation, in step 2, the ratio of grinding media to material of described second time ball milling is 5-50:1 (such as 6:1,8:1,12:1,16:1,20:1,24:1,28:1,32:1,36:1,40:1,42:1,45:1,48:1), and the ratio of grinding media to material of wherein said second time ball milling is the quality of the mill ball adding described ball mill and described nanometer SnS
2the quality of the glucose in particle and described glucose solution and ratio.
Above-mentioned SnS
2the preparation method of-C nano composite negative pole material, as a kind of preferred implementation, in step 2, the rotating speed of described second time ball milling is 100-250rpm (110rpm, 120rpm, 140rpm, 160rpm, 180rpm, 200rpm, 220rpm, 240rpm), and the time of described second time ball milling is 10-30h (such as 11h, 12h, 14h, 16h, 18h, 20h, 22h, 24h, 26h, 28h, 29h).Stannic disulfide fully can be mixed in the solution by second time ball milling, make SnS
2particle fully contacts with glucose solution.
Above-mentioned SnS
2the preparation method of-C nano composite negative pole material, as a kind of preferred implementation, described non-oxide protective atmosphere is inert atmosphere, H
2atmosphere or inert gas and H
2mixed atmosphere; More preferably, described inert atmosphere is Ar atmosphere.
Above-mentioned SnS
2the preparation method of-C nano composite negative pole material, as a kind of preferred implementation, in step 3, described heat treated temperature is 450-580 DEG C (455 DEG C, 460 DEG C, 480 DEG C, 500 DEG C, 520 DEG C, 540 DEG C, 560 DEG C, 570 DEG C, 575 DEG C), and the described heat treated time is 10-20h (10.5h, 11h, 12h, 13h, 14h, 15h, 16h, 17h, 18h, 19h, 19.5h).
Glucose there occurs chemical reaction in heat treatment process, its corresponding chemical equation:
C
6H
12O
6＝6C+6H
2O。
Above-mentioned SnS
2the preparation method of-C nano composite negative pole material, as a kind of preferred implementation, the mill ball in described ball mill is stainless steel metal mill ball.
Above-mentioned SnS
2the application of-C nano composite negative pole material in lithium ion battery.
Compared with prior art, the invention has the beneficial effects as follows:
1) the present invention passes through at nanometer SnS
2the mode of coated with carbon can form a conductive network, thus effectively improves the electric conductivity of material, obtains the high-performance SnS of coated with uniform carbon
2-C nano lithium ion battery negative material, this material is under the test condition of 100mA/g, and discharge capacity reaches more than 725mAh/g first, initial charge capacity reaches more than 512mAh/g, efficiency reaches more than 80% first, and circulate after 60 times, discharge capacity remains on about 500mAh/g; Meanwhile, this material also has good circulation ratio performance, and capability retention is high, can be used for field of lithium ion battery, has good application and industrialization prospect.
2) a kind of SnS of the present invention's proposition
2the preparation method of-C nano composite negative pole material, raw material is easy to get and cost is lower, and preparation technology is simple and easy to operate, is easy to realize large-scale industrial production; Noxious substance is not adopted, environmentally safe in reaction; Reaction does not need to add surfactant, catalyst etc., and impurity is little, obtains SnS
2-C nano composite negative pole material purity is high and chemical property is good.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 Raw SnS
2through the obtained nanometer SnS of first time ball milling
2scanning electron microscopy (SEM) the photo figure of powder.
Fig. 2 is the SnS that the embodiment of the present invention 1 obtains
2the X-ray photoelectron spectroscopic analysis figure (XPS collection of illustrative plates) of-C nano composite negative pole material.
Fig. 3 is the SnS that the embodiment of the present invention 1 obtains
2scanning electron microscopy (SEM) the photo figure of-C nano composite negative pole material.
Fig. 4 is the SnS that the embodiment of the present invention 1 obtains
2the electrochemical impedance collection of illustrative plates (EIS collection of illustrative plates) of-C nano composite negative pole material.
Fig. 5 is the SnS that the embodiment of the present invention 1 obtains
2capacity (the coulombic efficiency)-cyclic curve of the button cell of-C nano composite negative pole material assembling.
Fig. 6 is the SnS that the embodiment of the present invention 2 obtains
2the electrochemical impedance collection of illustrative plates (EIS collection of illustrative plates) of-C nano composite negative pole material.
Fig. 7 is the SnS that the embodiment of the present invention 2 obtains
2circulation-the curve of double curvature of the button cell of-C nano composite negative pole material assembling.
Embodiment
In order to make content of the present invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation.
The various reagent used in following examples and raw material are commercially available prod.
Embodiment 1
The present embodiment prepares a kind of SnS
2-C nano composite negative pole material, wherein SnS
2be 2:1 with the mass ratio of C, concrete steps are as follows:
(1) SnS is taken
2powder (purity 99% and particle diameter 40-60 μm) 4g, choose stainless steel metal mill ball 200g (ratio of grinding media to material is 50:1) simultaneously, put into 250ml stainless-steel grinding tank together, the argon gas (Ar) being filled with 1bar is protected; Ball grinder is placed in and ball mill carries out first time ball milling and obtain the SnS after ball milling
2powder, wherein, rotational speed of ball-mill is 400rpm, Ball-milling Time is 40h.
(2) by the SnS after ball milling
2add D/W in powder, wherein glucose is 5g.Meanwhile, be that 180 grams (ratio of grinding media to material is 20:1) put into 250ml stainless-steel grinding tank together by stainless steel metal mill ball; Be placed in by ball grinder and ball mill carries out second time ball milling obtain mixture, wherein rotational speed of ball-mill is 200rpm, Ball-milling Time is 30h.
(3) mixture step (2) obtained is dry in an oven, by dried material at Ar+H
2under protective atmosphere, heat treatment 10h i.e. obtained SnS at 450 DEG C
2-C nano composite negative pole material.
Fig. 1 is through the obtained SnS of first time ball milling in the present embodiment
2scanning electron microscopy (SEM) the photo figure of powder, as can be seen from the figure, through the obtained SnS of first time ball milling
2powder particle size is in 20-70nm scope.
Fig. 2 is the SnS that the present embodiment obtains
2the X-ray photoelectron spectroscopic analysis figure (XPS collection of illustrative plates) of-C nano composite negative pole material, as can be seen from the figure, SnS
2all there is the diffraction maximum of Sn, S and C in the diffraction maximum of-C nano composite negative pole material, characteristic peak is obvious.
Fig. 3 is the SnS that the embodiment of the present invention 1 obtains
2scanning electron microscopy (SEM) the photo figure of-C nano composite negative pole material, as can be seen from the figure, SnS
2nanometer SnS in-C nano composite negative pole material
2grain diameter at below 100nm, and is uniformly distributed in described material with carbon element.
Fig. 4 is the SnS that the present embodiment obtains
2the electrochemical impedance collection of illustrative plates (EIS collection of illustrative plates) of-C nano composite negative pole material, as can be seen from the figure, SnS
2the contact resistance of-C nano composite negative pole material is very little.
SnS prepared by the present embodiment
2the charge-discharge performance test of-C nano composite negative pole material:
SnS prepared by the present embodiment
2-C nano composite negative pole material is used as lithium ion battery negative material and is assembled into CR2025 button cell.First, the SnS prepared by the present embodiment
2-C nano composite negative pole material and acetylene black and Kynoar grind in 1-METHYLPYRROLIDONE (NMP) medium by the mass ratio of 8:1:1 makes slurry, then with scraper plate coating machine, slurry coating is formed electrode slice on Copper Foil, electrode slice in 110 DEG C of dry 12h, electrode slice stamps out 1cm in vacuum drying chamber
2negative pole disk.Battery pack is contained in the glove box being full of high-purity argon gas and completes.Be to electrode with metal lithium sheet, polypropylene screen is barrier film, 1mol/LLiPF
6-ethylene carbonate (EC)+dimethyl carbonate (DMC)+diethyl carbonate (EMC) (volume ratio is 1:1) is electrolyte, under the current density of 100mA/g, in the voltage range of 0.01 ~ 3V, button type battery carries out charge-discharge test.
Fig. 5 is the SnS that the present embodiment obtains
2-C nano composite negative pole material assembling button cell capacity (coulombic efficiency)-cyclic curve, as can be seen from the figure, material is under the test condition of 100mA/g, discharge capacity reaches 795mAh/g first, initial charge capacity reaches 646mAh/g, and efficiency reaches more than 80% first; Circulate after 60 times, charge and discharge capacitance amount remains on about 500mAh/g.
Embodiment 2
The present embodiment prepares a kind of SnS
2-C nano composite negative pole material, wherein SnS
2be 1:1 with the mass ratio of C, concrete steps are as follows:
(1) SnS is taken
2powder (purity 99% and particle diameter 40-60 μm) 4g, choose stainless steel metal mill ball 120g (ratio of grinding media to material is 30:1) simultaneously and put into 250ml stainless-steel grinding tank together, the argon gas (Ar) being filled with 1bar is protected; Ball grinder is placed in and ball mill carries out first time ball milling and obtain the SnS after ball milling
2powder, wherein, rotational speed of ball-mill is 500rpm, Ball-milling Time is 40h.
(2) by the SnS after ball milling
2add glucose solution in powder, wherein glucose is 10g.Meanwhile, be that 280 grams (ratio of grinding media to material is 20:1) put into 250ml stainless-steel grinding tank together by stainless steel metal mill ball; Be placed in by ball grinder and ball mill carries out second time ball milling obtain mixture, wherein rotational speed of ball-mill is 200rpm, Ball-milling Time is 30h.
(3) mixture step (2) obtained is dry in an oven, by dried material at Ar+H
2under protective atmosphere, heat treatment 10h i.e. obtained SnS at 550 DEG C
2-C nano composite negative pole material.
Fig. 6 is the SnS that the present embodiment obtains
2the electrochemical impedance collection of illustrative plates (EIS collection of illustrative plates) of-C nano composite negative pole material, as can be seen from the figure, SnS
2the contact resistance of-C nano composite negative pole material is very little.
In the same manner as in Example 1 to SnS prepared by the present embodiment
2the charge-discharge performance test of-C nano composite negative pole material.
Fig. 7 is the SnS that the present embodiment obtains
2circulation-the curve of double curvature of the button cell of-C nano composite negative pole material assembling, as can be seen from the figure, under the test condition of 0.1C, discharge capacity reaches 725mAh/g first, and initial charge capacity reaches 512mAh/g; Under the test condition of 0.2C, discharge capacity reaches 667mAh/g first, and initial charge capacity reaches 644mAh/g; Under the test condition of 0.5C, discharge capacity reaches 612mAh/g first, and initial charge capacity reaches 603mAh/g; But under coming back to the test condition of 0.1C, capacity reaches 626mAh/g again, there is good circulation ratio performance.
Embodiment 3-4
In embodiment 3 and 4, except SnS
2beyond powder is different with embodiment 2 from the mass ratio of glucose, other steps are all identical with embodiment 2, the SnS of embodiment 3 and 4
2the mass ratio of powder and glucose see table 1, the SnS of the composite material obtained
2with the mass ratio of C also see table 1.Adopt the mode identical with embodiment 1 to carry out performance test to composite material, results of property is see table 1.
The data table related of table 1 embodiment 3-4
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range of the invention.
Claims (10)
1. a SnS
2-C nano composite negative pole material, is characterized in that, by nanometer SnS
2particle and coated described nanometer SnS
2the material with carbon element composition of particle, wherein, described nanometer SnS
2the particle diameter of particle is below 100nm, and is uniformly distributed in described material with carbon element; Described SnS
2be 0.625-12.5:1 with the mass ratio of described material with carbon element.
2. SnS according to claim 1
2-C nano composite negative pole material, is characterized in that, described material with carbon element is amorphous carbon; Described nanometer SnS
2the particle diameter of particle is 20-70nm.
3. the SnS described in claim 1 or 2
2the preparation method of-C nano composite negative pole material, is characterized in that, comprises the steps:
Step one, loads ball grinder and is placed on ball mill and carries out first time ball milling, obtain nanometer SnS by stannic disulfide
2particle;
Step 2, first by described nanometer SnS
2particle adds in glucose solution, and then loading ball grinder is placed on ball mill and carries out second time ball milling, obtains mixture;
Step 3, the described mixture first step 2 obtained carries out drying, is then heat-treated under non-oxide protective atmosphere by dried material, obtained described SnS
2-C nano composite material.
4. SnS according to claim 3
2the preparation method of-C nano composite negative pole material, is characterized in that, described first time ball milling and/or described second time ball milling carry out in non-oxide protective atmosphere; Preferably, described non-oxide protective atmosphere is inert atmosphere, H
2atmosphere or inert gas and H
2mixed atmosphere; More preferably, described inert atmosphere is Ar atmosphere.
5. SnS according to claim 3
2the preparation method of-C nano composite negative pole material, is characterized in that, in step one, described first time the ratio of grinding media to material of ball milling be 10-60:1, described first time the rotating speed of ball milling be 350-500rpm, the time of ball milling described first time is 10-50h.
6. SnS according to claim 3
2the preparation method of-C nano composite negative pole material, is characterized in that, in step 2, the mass ratio of described stannic disulfide and described glucose is 0.25-5:1.
7. SnS according to claim 3
2the preparation method of-C nano composite negative pole material, is characterized in that, in step 2, the glucose sucrose in described glucose solution is or/and starch in replace.
8. SnS according to claim 3
2the preparation method of-C nano composite negative pole material, is characterized in that, in step 2, the ratio of grinding media to material of described second time ball milling is 5-50:1, and the rotating speed of described second time ball milling is 100-250rpm, and the time of described second time ball milling is 10-30h.
9. SnS according to claim 3
2the preparation method of-C nano composite negative pole material, is characterized in that, in step 3, described heat treated temperature is 450-580 DEG C, and the described heat treated time is 10-20h.
10. the SnS described in claim 1 or 2
2the application of-C nano composite negative pole material in lithium ion battery.
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| CN201510857468.7A CN105406065B (en) | 2015-11-30 | 2015-11-30 | SnS2C nano composite negative pole material and its preparation method and application |
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| CN201510857468.7A CN105406065B (en) | 2015-11-30 | 2015-11-30 | SnS2C nano composite negative pole material and its preparation method and application |
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| CN105406065B CN105406065B (en) | 2018-03-09 |
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Cited By (4)
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| CN105964276A (en) * | 2016-05-05 | 2016-09-28 | 国家纳米科学中心 | Carbon quantum dot-loaded SnS2 nanometer sheet and its preparation method and use |
| CN106450226A (en) * | 2016-11-22 | 2017-02-22 | 华南师范大学 | Preparation method of natural pollen-based metal sulfide-carbon composite material and application thereof |
| CN109659550A (en) * | 2019-01-21 | 2019-04-19 | 浙江理工大学 | A kind of flower-shaped C SnS of tree peony2The preparation method of lithium cell cathode material |
| CN111573633A (en) * | 2020-05-28 | 2020-08-25 | 哈尔滨工业大学 | Preparation method and application of carbon-coated tin selenide negative electrode material |
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| CN104362319A (en) * | 2014-11-21 | 2015-02-18 | 东莞市迈科科技有限公司 | Preparation method of porous tin-carbon composite negative material |
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| CN104362319A (en) * | 2014-11-21 | 2015-02-18 | 东莞市迈科科技有限公司 | Preparation method of porous tin-carbon composite negative material |
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| HYUN SIK KIM等: "Electrochemical behavior of carbon-coated SnS2 for use as the anode in lithium-ion batteries", 《ELECTROCHIMICA ACTA》 * |
| YANG LIU等: "Synthesis of Cu2S/carbon composites with improved lithium storage performance", 《INTERNATIONAL JOURNAL OF HYDROGEN ENERGY》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964276A (en) * | 2016-05-05 | 2016-09-28 | 国家纳米科学中心 | Carbon quantum dot-loaded SnS2 nanometer sheet and its preparation method and use |
| CN105964276B (en) * | 2016-05-05 | 2019-04-12 | 国家纳米科学中心 | The SnS of carbon quantum dot load2Nanometer sheet, preparation method and application |
| CN106450226A (en) * | 2016-11-22 | 2017-02-22 | 华南师范大学 | Preparation method of natural pollen-based metal sulfide-carbon composite material and application thereof |
| CN109659550A (en) * | 2019-01-21 | 2019-04-19 | 浙江理工大学 | A kind of flower-shaped C SnS of tree peony2The preparation method of lithium cell cathode material |
| CN109659550B (en) * | 2019-01-21 | 2020-11-06 | 浙江理工大学 | Peony-shaped C @ SnS2Preparation method of lithium battery negative electrode material |
| CN111573633A (en) * | 2020-05-28 | 2020-08-25 | 哈尔滨工业大学 | Preparation method and application of carbon-coated tin selenide negative electrode material |
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| CN105406065B (en) | 2018-03-09 |
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