CN108428880A - A kind of stannic selenide/layer graphene composite material and preparation method and application less - Google Patents
A kind of stannic selenide/layer graphene composite material and preparation method and application less Download PDFInfo
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- CN108428880A CN108428880A CN201810297975.3A CN201810297975A CN108428880A CN 108428880 A CN108428880 A CN 108428880A CN 201810297975 A CN201810297975 A CN 201810297975A CN 108428880 A CN108428880 A CN 108428880A
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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
- H01M4/58—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
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a kind of preparation methods of stannic selenide/few layer graphene composite material, include the following steps：Glass putty, selenium powder and expanded graphite are added in ball grinder after mixing, obtain mixed-powder；Ball milling is carried out using dielectric barrier discharge plasma auxiliary high-energy ball-milling method, obtains the stannic selenide/few layer graphene composite material；The molar ratio of the glass putty and selenium powder is 1:1；The mass fraction of expanded graphite is 10%~70% in the mixed-powder；The Ball-milling Time is 10h~30h.The invention also discloses above-mentioned stannic selenide/few layer graphene composite material and its applications.The stannic selenide of the present invention/few layer graphene composite material has high power capacity and excellent cycle performance and high rate performance.Preparation method of the present invention is simple, at low cost, is easy to mass produce.
Description
Technical field
The present invention relates to lithium/anode material of lithium-ion battery, more particularly to a kind of stannic selenide/few layer graphene composite material
And its preparation method and application.
Background technology
Lithium ion battery has extended cycle life due to having many advantages, such as that energy density is big, is widely used as including mobile phone, notes
The working power of the various electronic products of this computer, digital camera, and the portable outfit including electric vehicle power battery.
Along with the extensive use of lithium ion battery, on the one hand, more stringent requirements are proposed for the performance of lithium ion battery by people, packet
Include the demands such as higher capacity, the power of bigger, longer cycle life.Currently, being commercialized widely used lithium ion battery
Negative material is mainly graphitic carbon material, and theoretical specific capacity is relatively low, cannot meet high power capacity, high-power, the long-life secondary
The growth requirement of battery, therefore, the high negative material of R and D capacity are the passes for pushing lithium ion battery further to develop
Key.On the other hand, global lithium resource does not enrich, and cost is higher, and it is extensive that this largely restricts lithium ion battery
Using.For lithium resource, sodium resource very abundant, cost is relatively low, and the two is same major element, chemical property phase
Closely, therefore substituting lithium exploitation sodium-ion battery with sodium has boundless application prospect.However, since sodium ion has bigger
Ionic radius, commercial Li-ion cathode graphite material is difficult embedded sodium ion, seriously restricts the development of sodium-ion battery.
Stannic selenide due to higher removal lithium embedded/sodium theoretical specific capacity, getting the attention in recent years.But it is single
Stannic selenide will produce huge volume expansion during removal lithium embedded/sodium, lead to electricity as lithium/sodium ion electrode negative material
The dusting of pole material, makes electrode material fall off from collector, influences the chemical property of material.
Invention content
In order to overcome the disadvantages mentioned above and deficiency of the prior art, the purpose of the present invention is to provide a kind of preparation process letters
The preparation method of list, the stannic selenide haveing excellent performance/few layer graphene composite material, the stannic selenide being prepared/few layer graphene
Composite material has high power capacity and excellent cycle performance and high rate performance, the cathode particularly suitable as lithium/sodium-ion battery
Material.
The purpose of the present invention is achieved through the following technical solutions：
A kind of preparation method of stannic selenide/few layer graphene composite material, includes the following steps：By glass putty, selenium powder and swollen
Swollen graphite is added in ball grinder after mixing, obtains mixed-powder；Using dielectric barrier discharge plasma auxiliary high-energy ball-milling method
Ball milling is carried out, the stannic selenide/few layer graphene composite material is obtained；
The molar ratio of the glass putty and selenium powder is 1:1；In the mixed-powder mass fraction of expanded graphite be 10%~
70%.
The use dielectric barrier discharge plasma auxiliary high-energy ball-milling method, specially：
(1) install the front shroud and electrode bar of ball grinder, and the iron core in front shroud and electrode bar respectively with etc. from
The positive and negative anodes of daughter power supply are connected, wherein the iron core in electrode bar connects the anode of plasma electrical source, and front shroud connects plasma
The cathode of power supply；
(2) mixed-powder of abrading-ball and glass putty, selenium powder and expanded graphite is packed into ball grinder；
(3) ball grinder is vacuumized by vacuum valve, is then charged with discharge gas medium, the pressure value in ball grinder is made to reach
To 0.01-1.0Mpa；
(4) plasma electrical source is connected, setting plasma electrical source voltage is 15KV, electric current 0.25A, discharge frequency
60KHz starts driving motor and drives exciting block, makes rack and the ball grinder that is fixed on the rack while vibrating, progress medium resistance
Keep off plasma discharging auxiliary high-energy ball milling；The exciting block uses double-amplitude 7mm, motor speed 960r/min.
The time of the ball milling is 10h~30h.
The mass ratio of the abrading-ball and mixed-powder is 20:1~100:1.
The discharge gas medium that the dielectric barrier discharge plasma auxiliary high-energy ball-milling method uses is inert gas.
The stannic selenide that the preparation method of the stannic selenide/few layer graphene composite material obtains/few layer graphene is compound
Material is combined by the nanocrystalline and few layer graphene of ultra-fine stannic selenide, and stannic selenide is nanocrystalline to be covered by few layer graphene carbon
In matrix.
The stannic selenide/few application of the layer graphene composite material in making lithium/anode material of lithium-ion battery
The principle of the present invention is：
Plasma auxiliary high-energy ball-milling method is a kind of method of high-energy and high-efficiency, during material preparation, in plasma
Under mechanism caused by heat effect and high-energy ball milling caused by electric discharge, tin and selenium reaction in-situ generate ultra-fine stannic selenide crystalline substance
Grain, and stripping at few layer graphene and is coated on stannic selenide crystal grain expanded graphite in situ, ultra-fine grain and less layer graphene
Cladding alleviates the volume expansion generated in stannic selenide electrochemical process well, to improve storage lithium/sodium performance of stannic selenide.
Compared with prior art, the present invention has the following advantages and beneficial effect：
(1) using plasma auxiliary high-energy ball-milling method prepares lithium/anode material of lithium-ion battery selenizing to the present invention for the first time
Tin, compared with generally use chemical method prepares stannic selenide, preparation method is simple, at low cost, is easy to mass produce.
(2) stannic selenide of the invention/few layer graphene composite material, as lithium/anode material of lithium-ion battery, due to few
Layer graphene it is compound, ion transmission and the electronic conduction of material can be improved, and alleviated huge in stannic selenide charge and discharge process
Big volume change shows high power capacity and excellent cycle performance and forthright again as lithium/anode material of lithium-ion battery
Energy.
Description of the drawings
Fig. 1 is the XRD diagram of stannic selenide/few layer graphene composite material prepared by the embodiment of the present invention 2；
Fig. 2 is the SEM figures of stannic selenide/few layer graphene composite material prepared by the embodiment of the present invention 2；
Fig. 3 is the HRTEM figures of stannic selenide/few layer graphene composite material prepared by the embodiment of the present invention 2；
Fig. 4 is the embedding lithium charging and discharging curve of stannic selenide/few layer graphene composite material prepared by the embodiment of the present invention 2
Figure；
Fig. 5 is that the embedding lithium cycle performance of stannic selenide/few layer graphene composite material prepared by the embodiment of the present invention 2 is bent
Line chart；
Fig. 6 is that the embedding lithium high rate performance of stannic selenide/few layer graphene composite material prepared by the embodiment of the present invention 2 is bent
Line chart；
Fig. 7 is the embedding sodium charging and discharging curve of stannic selenide/few layer graphene composite material prepared by the embodiment of the present invention 2
Figure；
Fig. 8 is that the embedding sodium cycle performance of stannic selenide/few layer graphene composite material prepared by the embodiment of the present invention 2 is bent
Line chart；
Fig. 9 is that the embedding sodium high rate performance of stannic selenide/few layer graphene composite material prepared by the embodiment of the present invention 2 is bent
Line chart.
Specific implementation mode
With reference to embodiment, the present invention is described in further detail, embodiments of the present invention are not limited thereto.
Embodiment 1
Glass putty, selenium powder and expanded graphite raw material powder are added in ball grinder and mixed, wherein the mass fraction of expanded graphite
It is 30%, glass putty and selenium powder molar ratio are 1:1, the ball powder mass ratio of abrading-ball and raw material is 50:1, carry out dielectric barrier discharge etc.
Gas ions auxiliary high-energy ball milling 10h, discharge gas medium are argon gas, pressure inside the tank 0.1Mpa.After ball milling, selenizing is obtained
Tin/few layer graphene composite material.
Wherein, the dielectric barrier discharge plasma auxiliary high-energy ball milling body step of the present embodiment is：
(1) abrading-ball and proportioned glass putty, selenium powder and expanded graphite are packed into ball grinder；
(2) ball grinder is vacuumized by vacuum pump, be then charged with the inert gases such as discharge gas medium argon gas, helium or
The gaseous mixture of inert gas makes the pressure value in ball grinder reach 0.1Mpa；
(3) positive and negative anodes of plasma power supply are connected, wherein the iron core in electrode bar connects the anode of plasma electrical source,
Front shroud connects the cathode of plasma electrical source；
(4) start driving motor and drive exciting block, the ball grinder vibration for making rack and being fixed on the rack is also turned on
Gas ions power supply, setting plasma electrical source voltage are 15KV, electric current 0.25A, discharge frequency 60KHz, carry out plasma
Auxiliary high-energy ball milling；The exciting block uses double-amplitude 7mm, motor speed 960r/min.
The stannic selenide that the present embodiment is prepared/few layer graphene composite material (Sne@FLG composite materials) is used as lithium
Ion battery cathode material prepares lithium ion battery：
By Sne@FLG composite materials, conductive agent Super P and binder CMC in mass ratio 8:1:1 mixing is uniform after sizing mixing
Coated in electrode slice is made on copper foil；In argon gas atmosphere glove box, using lithium piece as to electrode, electrolyte 1mol/L
LiPF6/ EC/DEC (volume ratios 1:1), while the fluorinated ethylene carbonate (FEC) that volume ratio is 5% is added, diaphragm is poly- third
Alkene is assembled into CR2016 button cells and is tested.With 0.2A g-1Multiplying power charge and discharge cycles are carried out between 0~2.5V,
The reversible specific capacity for the first time of SnSe@FLG is 685.6mAh g-1, after recycling 200 times, reversible specific capacity is down to 478mAh g-1。
Stannic selenide made from the present embodiment/few layer graphene composite material is prepared into sodium as anode material of lithium-ion battery
Ion battery：
By Sne@FLG composite materials, conductive agent Super P and binder CMC in mass ratio 8:1:1 mixing is uniform after sizing mixing
Coated in electrode slice is made on copper foil；In argon gas atmosphere glove box, using sodium piece as to electrode, electrolyte 1mol/L
NaClO4/ EC/PC (volume ratios 1:1), while the fluorinated ethylene carbonate (FEC) that volume ratio is 5% is added, diaphragm is glass fibers
Dimension, is assembled into CR2032 button cells and is tested.With 0.2A g-1Multiplying power charge and discharge cycles, SnSe@are carried out between 0~3V
The reversible specific capacity for the first time of FLG is 320.9mAh g-1, after recycling 200 times, reversible specific capacity is down to 233.6mAh g-1。
Embodiment 2
Ball-milling Time is 20h as different from Example 1.
After ball milling, tin is reacted with selenium generates stannic selenide, and XRD diagram is as shown in Figure 1.Stannic selenide manufactured in the present embodiment/few
Layer graphene composite material SEM figures and HRTEM figures are as shown in Figures 2 and 3 respectively, by Fig. 2 and Fig. 3 it is found that nanocrystalline stannic selenide
It is equably covered by few layer graphene.
Negative electrode of lithium ion battery electrode slice and assembled battery is made in composite material manufactured in the present embodiment, with 0.2A g-1
Multiplying power charge and discharge are carried out between 0~2.5V, as shown in figure 4, first discharge specific capacity 1360mAh g-1, initial charge specific capacity
For 868mAh g-1, coulombic efficiency is 63.8% for the first time, and after 200 cycles, capacity still has 830mAh g-1.High rate charge-discharge,
As shown in figure 5,1,5A g-1Under, the reversible specific capacity for the first time of SnSe/FLG composite materials is 766.3,660.3mAh g-1, cycle
After 2000 times, still there is 92.8% and 62.1% capacity retention ratio.And it can be seen that 2,5A g from Fig. 6 curve of double curvature-1Current density
Under, capacity 698.6,612.2mAh g-1, there is good high rate performance.
Sodium-ion battery negative electricity pole piece and assembled battery is made in the composite material of preparation, with 0.2A g-1Multiplying power 0
Charge and discharge are carried out between~3V, as shown in fig. 7, first discharge specific capacity 714mAh g-1, initial charge specific capacity is 477.8mAh
g-1, coulombic efficiency is 67% for the first time, and after 200 cycles, capacity still has 445.6mAh g-1.High rate charge-discharge, such as Fig. 8 institutes
Show, 1,2A g-1Under, the reversible specific capacity for the first time of SnSe/FLG composite materials is 338.7,272.6mAh g-1, recycle 1000 times
Afterwards, still there is 83.4% and 83.8% capacity retention ratio.And it can be seen that 2,5A g from the curve of double curvature of Fig. 9-1Under current density,
Capacity is 343,285.7mAh g-1, there is good high rate performance.
Embodiment 3
Ball-milling Time is 30h as different from Example 2.After ball milling, stannic selenide/few layer graphene composite wood is obtained
Material.
Negative electrode of lithium ion battery electrode slice and assembled battery is made in composite material manufactured in the present embodiment, with 0.2A g-1
Multiplying power carry out charge and discharge cycles between 0~2.5V, the reversible specific capacity for the first time of SnSe@FLG is 766.5mAh g-1, cycle 200
After secondary, reversible specific capacity is down to 596.8mAh g-1。
Sodium-ion battery negative electricity pole piece and assembled battery is made in the composite material of preparation, with 0.2A g-1Multiplying power 0
Charge and discharge cycles are carried out between~3V, the reversible specific capacity for the first time of SnSe@FLG is 396.5mAh g-1, after recycling 200 times, reversible ratio
Capacity is down to 308.6mAh g-1。
Embodiment 4
The mass fraction of expanded graphite is 10% as different from Example 2.After ball milling, stannic selenide/few layer stone is obtained
Black alkene composite material.
Negative electrode of lithium ion battery electrode slice and assembled battery is made in composite material manufactured in the present embodiment, with 0.2A g-1
Multiplying power carry out charge and discharge cycles between 0~2.5V, the reversible specific capacity for the first time of SnSe@FLG is 882.6mAh g-1, cycle 200
After secondary, reversible specific capacity is down to 556.5mAh g-1。
Sodium-ion battery negative electricity pole piece and assembled battery is made in the composite material of preparation, with 0.2A g-1Multiplying power 0
Charge and discharge cycles are carried out between~3V, the reversible specific capacity for the first time of SnSe@FLG is 492.7mAh g-1, after recycling 200 times, reversible ratio
Capacity is down to 288.6mAh g-1。
Embodiment 5
The mass fraction of expanded graphite is 70% in raw material as different from Example 2.After ball milling, obtain stannic selenide/
Few layer graphene composite material.
Using composite material manufactured in the present embodiment as lithium ion battery negative material, in 0.2A g-1Multiplying power under charge and discharge
Electricity, reversible specific capacity is 472.5mAh g for the first time-1, after recycling 200 times, reversible specific capacity is down to 465.6mAh g-1。
Using composite material manufactured in the present embodiment as anode material of lithium-ion battery, in 0.2A g-1Multiplying power under charge and discharge
Electricity, reversible specific capacity is 244.2mAh g for the first time-1, after recycling 200 times, reversible specific capacity is down to 228mAh g-1。
Embodiment 6
The ball powder mass ratio of abrading-ball and raw material is 20 as different from Example 2:1.After ball milling, stannic selenide/few is obtained
Layer graphene composite material.
Using composite material manufactured in the present embodiment as lithium ion battery negative material, in 0.2A g-1Multiplying power under charge and discharge
Electricity, reversible specific capacity is 760.5mAh g for the first time-1, after recycling 200 times, reversible specific capacity is down to 565.7mAh g-1。
Using composite material manufactured in the present embodiment as sodium-ion battery cathode negative material, in 0.2A g-1Multiplying power under
Charge and discharge, reversible specific capacity is 395.2mAh g for the first time-1, after recycling 200 times, reversible specific capacity is down to 254.3mAh g-1。
Embodiment 7
The ball powder mass ratio of abrading-ball and raw material is 100 as different from Example 2:1.
After ball milling, stannic selenide/few layer graphene composite material is obtained.
Using composite material manufactured in the present embodiment as lithium ion battery negative material, in 0.2A g-1Multiplying power under charge and discharge
Electricity, reversible specific capacity is 828.6mAh g for the first time-1, after recycling 200 times, reversible specific capacity is down to 668.5mAh g-1。
Using composite material manufactured in the present embodiment as sodium-ion battery cathode negative material, in 0.2A g-1Multiplying power under
Charge and discharge, reversible specific capacity is 415.8mAh g for the first time-1, after recycling 200 times, reversible specific capacity is down to 355mAh g-1。
Embodiment 8
Pressure inside the tank value is 0.01Mpa as different from Example 2.
After ball milling, stannic selenide/few layer graphene composite material is obtained.
Using composite material manufactured in the present embodiment as lithium ion battery negative material, in 0.2A g-1Multiplying power under charge and discharge
Electricity, reversible specific capacity is 858.2mAh g for the first time-1, after recycling 200 times, reversible specific capacity is down to 818.5mAh g-1。
Using composite material manufactured in the present embodiment as sodium-ion battery cathode negative material, in 0.2A g-1Multiplying power under
Charge and discharge, reversible specific capacity is 475.8mAh g for the first time-1, after recycling 200 times, reversible specific capacity is down to 443mAh g-1。
Embodiment 9
Pressure inside the tank value is 1.0Mpa as different from Example 2.
After ball milling, stannic selenide/few layer graphene composite material is obtained.
Using composite material manufactured in the present embodiment as lithium ion battery negative material, in 0.2A g-1Multiplying power under charge and discharge
Electricity, reversible specific capacity is 865.8mAh g for the first time-1, after recycling 200 times, reversible specific capacity is down to 828.5mAh g-1。
Using composite material manufactured in the present embodiment as sodium-ion battery cathode negative material, in 0.2A g-1Multiplying power under
Charge and discharge, reversible specific capacity is 476.8mAh g for the first time-1, after recycling 200 times, reversible specific capacity is down to 456mAh g-1。
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by the embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (7)
1. a kind of preparation method of stannic selenide/few layer graphene composite material, which is characterized in that include the following steps：By glass putty,
Selenium powder and expanded graphite are added in ball grinder after mixing, obtain mixed-powder；It is assisted using dielectric barrier discharge plasma high
Energy ball-milling method carries out ball milling, obtains the stannic selenide/few layer graphene composite material；
The molar ratio of the glass putty and selenium powder is 1:1；The mass fraction of expanded graphite is 10%~70% in the mixed-powder.
2. the preparation method of stannic selenide according to claim 1/few layer graphene composite material, which is characterized in that described
Using dielectric barrier discharge plasma auxiliary high-energy ball-milling method, specially：
(1) install the front shroud and electrode bar of ball grinder, and the iron core in front shroud and electrode bar respectively with plasma
The positive and negative anodes of power supply are connected, wherein the iron core in electrode bar connects the anode of plasma electrical source, and front shroud connects plasma electrical source
Cathode；
(2) mixed-powder of abrading-ball and glass putty, selenium powder and expanded graphite is packed into ball grinder；
(3) ball grinder is vacuumized by vacuum valve, is then charged with discharge gas medium, the pressure value in ball grinder is made to reach
0.01-1.0Mpa；
(4) connect plasma electrical source, setting plasma electrical source voltage be 15KV, electric current 0.25A, discharge frequency 60KHz,
Start driving motor and drive exciting block, make rack and the ball grinder that is fixed on the rack while vibrating, progress dielectric barrier discharge
Plasma asistance high-energy ball milling；The exciting block uses double-amplitude 7mm, motor speed 960r/min.
3. the preparation method of stannic selenide according to claim 1 or 2/few layer graphene composite material, which is characterized in that institute
The time for stating ball milling is 10h~30h.
4. the preparation method of stannic selenide according to claim 2/few layer graphene composite material, which is characterized in that described
The mass ratio of abrading-ball and mixed-powder is 20:1~100:1.
5. the preparation method of stannic selenide according to claim 1/few layer graphene composite material, which is characterized in that described
The discharge gas medium that dielectric barrier discharge plasma auxiliary high-energy ball-milling method uses is inert gas.
6. the selenizing that the preparation method of Claims 1 to 5 any one of them stannic selenide/few layer graphene composite material obtains
Tin/few layer graphene composite material, which is characterized in that it is combined by the nanocrystalline and few layer graphene of ultra-fine stannic selenide, selenizing
Tin is nanocrystalline to be covered by few layer graphene carbon base body.
7. stannic selenide/few layer graphene composite material described in claim 6 is in making lithium/anode material of lithium-ion battery
Using.
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| CN109841820A (en) * | 2019-03-18 | 2019-06-04 | 华南理工大学 | A kind of lithium ion battery amorphous Sn 4 P 3/phosphorus/few layer graphene negative electrode material and the preparation method and application thereof |
| CN110336012A (en) * | 2019-07-11 | 2019-10-15 | 燕山大学 | A kind of chalcogenide composite material and preparation method and application that carbon is compound |
| CN110518188A (en) * | 2019-07-18 | 2019-11-29 | 华南理工大学 | A kind of selenium-phosphorus-carbon composite and the preparation method and application thereof |
| 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 |
| CN112408383A (en) * | 2020-11-17 | 2021-02-26 | 成都爱敏特新能源技术有限公司 | Plasma stripping graphite material and preparation method thereof |
| CN113675458A (en) * | 2021-06-28 | 2021-11-19 | 长春理工大学 | Sodium-magnesium double-salt battery with stable electrode form and improved capacity and multiplying power |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841820A (en) * | 2019-03-18 | 2019-06-04 | 华南理工大学 | A kind of lithium ion battery amorphous Sn 4 P 3/phosphorus/few layer graphene negative electrode material and the preparation method and application thereof |
| CN110336012A (en) * | 2019-07-11 | 2019-10-15 | 燕山大学 | A kind of chalcogenide composite material and preparation method and application that carbon is compound |
| CN110518188A (en) * | 2019-07-18 | 2019-11-29 | 华南理工大学 | A kind of selenium-phosphorus-carbon composite and the preparation method and application thereof |
| 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 |
| CN112408383A (en) * | 2020-11-17 | 2021-02-26 | 成都爱敏特新能源技术有限公司 | Plasma stripping graphite material and preparation method thereof |
| CN113675458A (en) * | 2021-06-28 | 2021-11-19 | 长春理工大学 | Sodium-magnesium double-salt battery with stable electrode form and improved capacity and multiplying power |
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