CN111785954A - Preparation method of lithium-sulfur battery positive electrode - Google Patents
Preparation method of lithium-sulfur battery positive electrode Download PDFInfo
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- CN111785954A CN111785954A CN202010654209.5A CN202010654209A CN111785954A CN 111785954 A CN111785954 A CN 111785954A CN 202010654209 A CN202010654209 A CN 202010654209A CN 111785954 A CN111785954 A CN 111785954A
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- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims description 15
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 67
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 67
- 239000011593 sulfur Substances 0.000 claims abstract description 67
- 239000006258 conductive agent Substances 0.000 claims abstract description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 20
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 19
- 239000003792 electrolyte Substances 0.000 claims abstract description 17
- 229920001021 polysulfide Polymers 0.000 claims abstract description 14
- 239000005077 polysulfide Substances 0.000 claims abstract description 13
- 150000008117 polysulfides Polymers 0.000 claims abstract description 13
- 238000007740 vapor deposition Methods 0.000 claims abstract description 8
- 125000004433 nitrogen atom Chemical group N* 0.000 claims abstract description 4
- 238000000498 ball milling Methods 0.000 claims description 15
- 239000006229 carbon black Substances 0.000 claims description 14
- 239000002131 composite material Substances 0.000 claims description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000011888 foil Substances 0.000 claims description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000002033 PVDF binder Substances 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 5
- 239000007774 positive electrode material Substances 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 239000012495 reaction gas Substances 0.000 claims description 4
- 238000001755 magnetron sputter deposition Methods 0.000 claims description 2
- 238000005546 reactive sputtering Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000001291 vacuum drying Methods 0.000 claims 1
- 238000005019 vapor deposition process Methods 0.000 claims 1
- 125000004122 cyclic group Chemical group 0.000 abstract description 9
- 239000011149 active material Substances 0.000 abstract description 3
- 238000000151 deposition Methods 0.000 description 12
- 230000008021 deposition Effects 0.000 description 10
- 238000001035 drying Methods 0.000 description 4
- 239000006245 Carbon black Super-P Substances 0.000 description 3
- 239000013543 active substance Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910003473 lithium bis(trifluoromethanesulfonyl)imide Inorganic materials 0.000 description 3
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Inorganic materials [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 description 3
- QSZMZKBZAYQGRS-UHFFFAOYSA-N lithium;bis(trifluoromethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F QSZMZKBZAYQGRS-UHFFFAOYSA-N 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 2
- MQKATURVIVFOQI-UHFFFAOYSA-N [S-][S-].[Li+].[Li+] Chemical compound [S-][S-].[Li+].[Li+] MQKATURVIVFOQI-UHFFFAOYSA-N 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- GLNWILHOFOBOFD-UHFFFAOYSA-N lithium sulfide Chemical compound [Li+].[Li+].[S-2] GLNWILHOFOBOFD-UHFFFAOYSA-N 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910009848 Ti4O7 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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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
-
- 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
-
- 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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- 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
- H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
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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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive electrodes
-
- 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
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Abstract
A method for preparing a positive electrode of a lithium-sulfur battery adopts a vapor deposition method to prepare a nitrogen-doped carbon film on the surface of a sulfur electrode, the carbon film is used for isolating an active material of the sulfur electrode from an electrolyte, and doped nitrogen atoms are used for adsorbing lithium polysulfide to prevent the lithium polysulfide from being dissolved in the electrolyte, so that the cyclic discharge stability of the lithium-sulfur battery is improved. The invention firstly disperses the sulfur on the surface of the conductive agent to improve the conductivity of the sulfur. After the sulfur electrode is prepared, a nitrogen-doped carbon film is prepared on the surface of the sulfur electrode by adopting a vapor deposition method, and the nitrogen-doped carbon film-sulfur electrode is prepared. The result of the cyclic charge-discharge test shows that the prepared nitrogen-doped carbon film-sulfur electrode has higher cyclic discharge stability.
Description
Technical Field
The invention relates to a preparation method of a lithium-sulfur battery anode, belonging to the technical field of lithium-sulfur batteries.
Background
A lithium-sulfur battery is a lithium secondary battery that employs sulfur as a positive electrode active material. The theoretical specific mass capacity of sulfur is 1675mAh/g, and the theoretical specific mass capacity of lithium-sulfur battery is 2600 Wh/kg. In addition, sulfur is inexpensive and environmentally friendly, which makes lithium-sulfur batteries promising.
Lithium sulfur batteryFirst, sulfur has poor conductivity, and elemental sulfur has a conductivity of 5 × 10 at 25 ℃-30S/cm, sulfur is an electronic insulator, and it is difficult to perform an electrochemical reaction without sulfur in contact with a conductive agent. Secondly, lithium polysulphide, an intermediate discharge product of sulphur in sulphur electrodes, is easily dissolved in the electrolyte, which results in loss of active material and corrosion of the lithium electrode. And thirdly, lithium polysulfide dissolved in the electrolyte generates lithium disulfide and lithium sulfide at the end of discharge, the lithium disulfide and the lithium sulfide are deposited on the surface of the sulfur electrode, and in the cyclic charge-discharge process, the active substances are easily aggregated due to repeated dissolution and deposition of the active substances, the electrochemical reaction activity of the active substances is reduced, and the cyclic discharge specific capacity of the lithium-sulfur battery is reduced.
A commonly used method for improving the performance of a lithium-sulfur battery is to form a composite material by using an adsorbent and sulfur, and to adsorb sulfur and lithium polysulfide on the surface of a sulfur electrode, thereby preventing an active material from being dissolved in an electrolyte. However, such adsorption has no significant effect on a sulfur electrode having a high sulfur content, and the positive electrode active material is in direct contact with the electrolyte, and part of lithium polysulfide is dissolved in the electrolyte and lost.
In order to prevent lithium polysulfide from dissolving in the electrolyte, it is necessary to isolate the positive electrode active material from the electrolyte, and lithium polysulfide is confined to the positive electrode.
Publication No. CN110649222A discloses a method for preparing a positive electrode of a lithium-sulfur battery, which includes the preparation of a sulfur-conductive agent composite, the preparation of a sulfur electrode, and the preparation of a conductive layer-sulfur electrode. But titanium protoxide Ti4O7The conductive layer has a large density and mass, which causes a decrease in the overall energy density of the lithium sulfur battery, which results in difficulty in exhibiting the advantage of high energy density of the lithium sulfur battery.
Disclosure of Invention
The invention aims to provide a preparation method of a lithium-sulfur battery positive electrode, which aims to prevent lithium polysulfide from being dissolved in electrolyte, improve the performance of the lithium-sulfur battery and have small influence on the quality of a sulfur electrode.
The technical scheme of the invention is that the method for preparing the positive electrode of the lithium-sulfur battery comprises the steps of dispersing sulfur on the surface of a conductive agent, preparing a nitrogen-doped carbon film by adopting a reactive magnetron sputtering method, isolating a positive electrode active material and electrolyte by using the carbon film, adsorbing lithium polysulfide by using nitrogen-doped nitrogen atoms, and preventing the lithium polysulfide from being dissolved in the electrolyte so as to improve the performance of the lithium-sulfur battery. And the nitrogen-doped carbon film has lower density and quality and has smaller influence on the quality of the sulfur electrode.
The method comprises the following steps:
(1) preparation of sulfur-conductive agent composite material
Weighing sulfur and a conductive agent carbon black in a certain mass ratio, wherein the mass ratio of the sulfur to the carbon black is (65: 35) - (75: 25); and (3) putting the sulfur and the carbon black into a ball milling tank, wherein the ball milling rotating speed range is 260-280r/min, and carrying out ball milling and mixing for 5-7h to obtain the sulfur-conductive agent composite material.
(2) Preparation of sulfur electrodes
Mixing the prepared sulfur-conductive agent composite material with a binder polyvinylidene fluoride and carbon black SuperP according to a mass ratio of 8: 1, and adding a solvent N-methyl pyrrolidone to prepare slurry; and coating the obtained slurry on an aluminum foil with the thickness of 15 mu m, and drying the aluminum foil for 15 hours in vacuum at the temperature of 90 ℃ to obtain the sulfur electrode.
(3) Preparation of nitrogen-doped carbon film
Preparing nitrogen-doped carbon film by vapor deposition, placing a sulfur electrode in a vapor deposition device with a distance between an anode and a cathode of 14-16 cm, and vacuumizing to 8 × 10 by a mechanical vacuum pump and a molecular pump-4Pa, introducing reaction gas into the device; and depositing under a proper air pressure condition and a proper power condition for 4-5h to obtain the nitrogen-doped carbon film.
The vapor deposition method is a reactive sputtering deposition method.
The reaction gas is a mixed gas of argon and nitrogen.
The suitable air pressure condition is 0.7-0.9 Pa.
The suitable power condition is 100-120W.
The method has the beneficial effects that the sulfur is dispersed on the surface of the conductive agent to improve the conductivity of the sulfur, and then the nitrogen-doped carbon film is prepared on the surface of the sulfur electrode by adopting a vapor deposition method, nitrogen atoms have stronger adsorption effect on lithium polysulfide. In addition, the nitrogen-doped carbon film has low density and quality, and has small influence on the quality of the sulfur electrode.
Drawings
FIG. 1 is a block diagram of a preparation method of the present invention;
fig. 2 is a specific capacity curve of the sulfur electrode prepared in example 1.
Detailed Description
Fig. 1 is a flow chart of a method for manufacturing a positive electrode of a lithium-sulfur battery according to the present invention.
Example 1
Weighing sulfur and conductive agent carbon black in a mass ratio of 70: 30, putting the sulfur and the carbon black into a ball milling tank, carrying out ball milling at a rotating speed of 270r/min for 6h, and carrying out ball milling and mixing to obtain the sulfur-conductive agent composite material.
Mixing the prepared sulfur-conductive agent composite material with a binder polyvinylidene fluoride and carbon black Super P according to the mass ratio of 8: 1, adding a solvent N-methyl pyrrolidone to prepare slurry, coating the slurry on an aluminum foil with the thickness of 15 mu m, and drying in vacuum for 15h at the temperature of 90 ℃ to prepare the sulfur electrode.
Putting the sulfur electrode into a sputter deposition device, wherein the distance between the positive electrode and the negative electrode is 15cm, and vacuumizing to 8 × 10 by a mechanical vacuum pump and a molecular pump-4And Pa, introducing argon and nitrogen into the device, controlling the deposition pressure to be 0.8Pa, the deposition power to be 110W, and the deposition time to be 4.5h to prepare the nitrogen-doped carbon film.
The electrochemical performance of the sulfur electrode prepared by assembling a button cell test is that the sulfur electrode is a lithium sheet, and the electrolyte is 1mol/L LiTFSI/(DOL + DME) +1% LiNO3The electrochemical performance of the prepared sulfur electrode is tested under the condition that the current multiplying power is 0.1C, the tested cyclic discharge specific capacity is shown in the attached figure 2, the initial discharge specific capacity of the prepared sulfur electrode is 1173mAh/g, the discharge specific capacity after 50 cycles is 948 mAh/g, the capacity retention rate is 80.8%, and the cyclic discharge stability is high.
Example 2
Weighing sulfur and conductive agent carbon black in a mass ratio of 65: 35, putting the sulfur and the carbon black into a ball milling tank, performing ball milling at a ball milling rotation speed of 260r/min for 5 hours, and performing ball milling and mixing to obtain the sulfur-conductive agent composite material.
Mixing the prepared sulfur-conductive agent composite material with a binder polyvinylidene fluoride and carbon black Super P according to the mass ratio of 8: 1, adding a solvent N-methyl pyrrolidone to prepare slurry, coating the slurry on an aluminum foil with the thickness of 15 mu m, and drying in vacuum for 15h at the temperature of 90 ℃ to prepare the sulfur electrode.
Placing the sulfur electrode in a sputter deposition device, wherein the distance between the anode and the cathode is 14cm, and vacuumizing to 8 × 10 by a mechanical vacuum pump and a molecular pump-4And Pa, introducing argon and nitrogen into the device, controlling the deposition pressure to be 0.7Pa, the deposition power to be 100W, and the deposition time to be 5h to prepare the nitrogen-doped carbon film.
The electrochemical performance of the sulfur electrode prepared by assembling a button cell test is that the sulfur electrode is a lithium sheet, and the electrolyte is 1mol/L LiTFSI/(DOL + DME) +1% LiNO3The electrochemical performance of the prepared sulfur electrode is tested under the condition that the current multiplying power is 0.1C, the initial discharge specific capacity of the prepared sulfur electrode is 1218mAh/g, the discharge specific capacity after 50 cycles is 989mAh/g, the capacity retention rate is 81.2%, and the cyclic discharge stability is high.
Example 3
Weighing sulfur and conductive agent carbon black in a mass ratio of 75: 25, putting the sulfur and the carbon black into a ball milling tank, performing ball milling at a rotating speed of 280r/min for 7 hours, and performing ball milling and mixing to obtain the sulfur-conductive agent composite material.
Mixing the prepared sulfur-conductive agent composite material with a binder polyvinylidene fluoride and carbon black Super P according to the mass ratio of 8: 1, adding a solvent N-methyl pyrrolidone to prepare slurry, coating the slurry on an aluminum foil with the thickness of 15 mu m, and drying in vacuum for 15h at the temperature of 90 ℃ to prepare the sulfur electrode.
Placing the sulfur electrode in a sputter deposition device, wherein the distance between the positive electrode and the negative electrode is 16cm, and vacuumizing to 8 × 10 by a mechanical vacuum pump and a molecular pump-4Pa, introducing argon and nitrogen into the device, controlling the deposition pressure to be 0.9Pa,the deposition power is 120W, the deposition time is 4h, and the nitrogen-doped carbon film is prepared.
The electrochemical performance of the sulfur electrode prepared by assembling a button cell test is that the sulfur electrode is a lithium sheet, and the electrolyte is 1mol/L LiTFSI/(DOL + DME) +1% LiNO3The electrochemical performance of the prepared sulfur electrode is tested under the condition that the current multiplying power is 0.1C, the initial discharge specific capacity of the prepared sulfur electrode is 1147mAh/g, the discharge specific capacity after 50 cycles is 913mAh/g, the capacity retention rate is 79.6%, and the cyclic discharge stability is high.
Claims (5)
1. A preparation method of a lithium-sulfur battery positive electrode is characterized in that sulfur is dispersed on the surface of a conductive agent, a nitrogen-doped carbon film is prepared by adopting a reactive magnetron sputtering method, a positive electrode active material and electrolyte are isolated by the carbon film, lithium polysulfide is adsorbed by nitrogen-doped nitrogen atoms, and the lithium polysulfide is prevented from being dissolved in the electrolyte, so that the performance of the lithium-sulfur battery is improved;
the method comprises the following steps:
(1) preparation of sulfur-conductive agent composite material
Weighing sulfur and a conductive agent carbon black in a certain mass ratio, wherein the mass ratio of the sulfur to the carbon black is (65: 35) - (75: 25); putting sulfur and carbon black into a ball milling tank, and ball milling at the rotating speed of 260-280r/min for 5-7h to prepare a sulfur-conductive agent composite material;
(2) preparation of sulfur electrodes
Mixing the prepared sulfur-conductive agent composite material with a binder polyvinylidene fluoride and carbon black SuperP according to a mass ratio of 8: 1, and adding a solvent N-methyl pyrrolidone to prepare slurry; coating the obtained slurry on an aluminum foil with the thickness of 15 mu m, and performing vacuum drying for 15h at the temperature of 90 ℃ to obtain a sulfur electrode;
(3) preparation of nitrogen-doped carbon film
Preparing nitrogen-doped carbon film by vapor deposition, placing a sulfur electrode in a vapor deposition device with a distance between an anode and a cathode of 14-16 cm, and vacuumizing to 8 × 10 by a mechanical vacuum pump and a molecular pump-4Pa, introducing reaction gas into the device; under the appropriate air pressure condition and power conditionDepositing for 4-5h to obtain the nitrogen-doped carbon film.
2. The method of claim 1, wherein the vapor deposition process is a reactive sputter deposition process.
3. The method of claim 1, wherein the reaction gas is a mixture of argon and nitrogen.
4. The method of claim 1, wherein the suitable pressure condition is 0.7-0.9 Pa.
5. The method of claim 1, wherein the suitable power is 100-120W.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101740787A (en) * | 2009-12-29 | 2010-06-16 | 浙江理工大学 | Metal particle-amorphous diamond composite anode for fuel cell and preparation method thereof |
| CN105489892A (en) * | 2016-01-08 | 2016-04-13 | 河南师范大学 | Composite positive electrode plate of lithium-sulfur battery and preparation method of composite positive electrode plate |
| CN105914369A (en) * | 2016-05-31 | 2016-08-31 | 浙江大学 | Nanoscale carbon coated lithium sulfide composite material, preparation method and application thereof |
| CN108023062A (en) * | 2017-12-04 | 2018-05-11 | 大连理工大学 | A kind of lithium sulfur battery anode material |
| CN109755545A (en) * | 2019-03-07 | 2019-05-14 | 清远佳致新材料研究院有限公司 | Porous carbon materials and preparation method thereof, porous carbon/sulphur composite material, cell positive material, lithium-sulfur cell and its application |
| CN110649222A (en) * | 2019-09-29 | 2020-01-03 | 江西省科学院应用物理研究所 | Preparation method of lithium-sulfur battery positive electrode |
-
2020
- 2020-07-09 CN CN202010654209.5A patent/CN111785954A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101740787A (en) * | 2009-12-29 | 2010-06-16 | 浙江理工大学 | Metal particle-amorphous diamond composite anode for fuel cell and preparation method thereof |
| CN105489892A (en) * | 2016-01-08 | 2016-04-13 | 河南师范大学 | Composite positive electrode plate of lithium-sulfur battery and preparation method of composite positive electrode plate |
| CN105914369A (en) * | 2016-05-31 | 2016-08-31 | 浙江大学 | Nanoscale carbon coated lithium sulfide composite material, preparation method and application thereof |
| CN108023062A (en) * | 2017-12-04 | 2018-05-11 | 大连理工大学 | A kind of lithium sulfur battery anode material |
| CN109755545A (en) * | 2019-03-07 | 2019-05-14 | 清远佳致新材料研究院有限公司 | Porous carbon materials and preparation method thereof, porous carbon/sulphur composite material, cell positive material, lithium-sulfur cell and its application |
| CN110649222A (en) * | 2019-09-29 | 2020-01-03 | 江西省科学院应用物理研究所 | Preparation method of lithium-sulfur battery positive electrode |
Non-Patent Citations (1)
| Title |
|---|
| 张义永等: "《锂硫电池原理及正极的设计与构建》", 30 April 2020, 冶金工业出版社 * |
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Application publication date: 20201016 |