CN110783549B - Polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material, and preparation method and application thereof - Google Patents
Polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material, and preparation method and application thereof Download PDFInfo
- Publication number
- CN110783549B CN110783549B CN201911081431.4A CN201911081431A CN110783549B CN 110783549 B CN110783549 B CN 110783549B CN 201911081431 A CN201911081431 A CN 201911081431A CN 110783549 B CN110783549 B CN 110783549B
- Authority
- CN
- China
- Prior art keywords
- sulfur
- based carbon
- cobalt
- polypyrrole
- doped cobalt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
-
- 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
- H01M4/36—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
- 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
-
- 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
-
- 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
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
-
- 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
Abstract
The invention discloses a polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material, a preparation method and application thereof, belongs to the technical field of lithium-sulfur batteries, and specifically comprises the following steps: preparing a precursor cobalt-based ZIF-67, preparing a sulfur-doped cobalt-based carbon nanocage, and preparing polypyrrole-coated sulfur-doped cobalt-based carbon nanocages (PS-CNCs). The carbon nanocages are constructed to form an internal hollow structure, so that more active substance sulfur can be contained, the volume expansion of sulfur is limited, the volume expansion problem in the reaction process of the battery is effectively relieved, and the service life is prolonged; the co-doping of sulfur and cobalt effectively improves the interaction between PS-CNCs and polar polysulfide in the reaction, effectively inhibits the shuttle effect of polysulfide, and improves the cycle performance of the battery; the polypyrrole is used for coating the carbon nanocages, so that the conductivity of the material can be obviously improved, the impedance is reduced, the polarization is inhibited, and the stability of the battery is improved. The method has the advantages of low cost, simple operation, obvious effect and suitability for popularization.
Description
Technical Field
The invention belongs to the technical field of lithium-sulfur batteries, and particularly relates to a polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material, and a preparation method and application thereof.
Background
The lithium-sulfur battery takes metal lithium as a negative electrode material, common elemental sulfur is taken as a positive electrode active substance, and the theoretical energy density of the whole battery formed by the lithium-sulfur battery is as high as 2600Wh/kg, which is far beyond the traditional lithium ion battery. The development of lithium-sulfur battery materials has become a very important and urgent research hotspot in the field of new energy materials.
The traditional positive active material of the lithium-sulfur battery is elemental sulfur, and although the traditional positive active material has the advantages of high storage capacity, no toxicity, environmental friendliness, low price and the like, the traditional positive active material of the lithium-sulfur battery has many defects due to the limitation of the traditional positive active material: (1) under the action of an electric field and concentration gradient in the reaction process of the battery, a shuttle effect is generated by polysulfide serving as a discharge intermediate product, so that serious capacity loss is caused; (2) in the continuous charging and discharging process, due to the fact that large volume expansion is caused by large density difference between elemental sulfur and a discharging final product, the capacity of the battery is attenuated, and the stability is reduced; (3) elemental sulfur and the discharge end product have poor conductivity, which is not favorable for electron transfer, resulting in a decrease in the utilization rate of the active material.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material and a preparation method thereof. The method is simple to operate, low in cost, obvious in effect and suitable for popularization.
The invention is realized by the following technical scheme:
a preparation method of a polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material specifically comprises the following steps:
(1) and preparing a precursor ZIF-67:
weighing 500-600mg cobalt nitrate hexahydrate and a certain mass of 2-methylimidazole, respectively dissolving in 25mL methanol solution, uniformly stirring by magnetic force, pouring the 2-methylimidazole solution into the cobalt nitrate hexahydrate solution, standing at room temperature for 24 hours for reaction, and then centrifugally drying to prepare cobalt-based ZIF-67 serving as a precursor;
(2) preparing sulfur-doped cobalt-based carbon nanocages (S-CNCs):
weighing 90mg of the precursor prepared in the step (1), dissolving the precursor in 30mL of absolute ethyl alcohol, adding Thioacetamide (TAA) with a certain mass after ultrasonic treatment, continuing to perform ultrasonic treatment for 20-30min, putting the mixture into a reaction kettle, reacting in an oven for 2h, naturally cooling to room temperature, centrifuging for three times, and performing vacuum drying to prepare the sulfur-doped cobalt-based carbon nanocage;
(3) preparing polypyrrole-coated sulfur-doped cobalt-based carbon nanocages (PS-CNCs):
weighing 10mg of the sulfur-doped cobalt-based carbon nanocage material prepared in the step (2), dissolving the material in 10mL of absolute ethyl alcohol, adding ferric p-toluenesulfonate and a proper amount of pyrrole monomer after ultrasonic dispersion, reacting for 24 hours after ultrasonic mixing, centrifuging for three times, and drying in vacuum.
Further, the mass ratio of the cobalt nitrate hexahydrate and the 2-methylimidazole in the step (1) is 0.5-0.6:1-2, and the drying temperature is 60 ℃.
Further, the mass ratio of the Thioacetamide (TAA) to the precursor in the step (2) is 0.5-0.7:0.9-1.5, and the oven temperature range is 100-.
Further, the mass ratio of the sulfur-doped cobalt-based carbon nanocages to ferric tosylate in the step (3) is 1-1.2: 0.1-0.3, wherein the mass-volume ratio of the sulfur-doped cobalt-based carbon nanocages to the pyrrole monomer is 3-5 mg: 10-12 μ L.
Further, the centrifugal solvent adopted in the centrifugal process is absolute ethyl alcohol, and the vacuum drying temperature is 60 ℃.
The polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material is prepared by the method, the interior of the prepared polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material is of a hollow structure, can contain more active substance sulfur, and limits the volume expansion of sulfur; meanwhile, the sulfur-cobalt co-doping mutual synergistic effect can effectively inhibit the shuttle effect of polysulfide and prolong the service life of the battery.
The invention also provides application of the polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material in preparation of batteries, and specifically, the prepared PS-CNCs are used for preparing PS-CNCs/S composites.
The preparation process of the PS-CNCs/S compound is as follows: weighing a proper amount of PS-CNCs and sublimed sulfur respectively according to the mass ratio of 1:3, grinding the PS-CNCs and the sublimed sulfur in a mortar for 30min, uniformly mixing, then placing the mixture in a reaction kettle, heating the mixture for 12h at 160 ℃, naturally cooling the mixture to room temperature, and taking out the mixture to obtain the PS-CNCs/S composite.
The PS-CNCs/S compound is used for preparing the battery, and the specific preparation method comprises the following steps:
(1) preparation of half-cell active material slurry
Mixing PS-CNCs/S, Super P and polyvinylidene fluoride (PVDF) serving as a binder according to the mass ratio of 8:1:1, dissolving in NMP solvent, and fully stirring for 24 hours to obtain uniform electrode slurry;
(2) coating preparation of current collector
And fully ultrasonically treating and cleaning the cut carbon fiber paper current collector by using acetone, ethanol and deionized water respectively, drying in vacuum to obtain a clean current collector, and uniformly coating the prepared electrode slurry on the carbon fiber paper current collector to obtain the electrode in vacuum.
Compared with the prior art, the invention has the following advantages:
(1) the polypyrrole-coated sulfur-doped cobalt-based carbon nanocages (PS-CNCs) are hollow, so that more active substance sulfur can be contained, and the nanocages can limit the volume expansion of sulfur and relieve the volume expansion problem of the battery in the redox reaction process;
(2) the sulfur-cobalt co-doping effectively improves the interaction between the PS-CNCs and the polar polysulfide in the reaction process, greatly inhibits the shuttle effect, and improves the cycle performance of the battery;
(3) the polypyrrole on the surface has good electronic transmission capability, so that the conductivity of the material can be effectively improved, and the polarization is inhibited, so that the electrochemical dynamic performance of the material is improved.
Drawings
FIG. 1 is a scanning electron microscope image of PS-CNCs prepared in example 1 of the present invention;
FIG. 2 is a scanning electron microscope image of PS-CNCs/S and ZIF-67/S prepared in example 1 of the present invention;
wherein a is a PS-CNCs/S compound, and b is a ZIF-67/S compound;
FIG. 3 is a test chart of cyclic voltammetry curves, rate capability and cyclic performance of PS-CNCs/S and ZIF-67/S;
wherein, a is a cyclic voltammetry curve test chart, b is a multiplying power performance test chart, and c is a cyclic performance test chart;
FIG. 4 is a graph showing the adsorption capacity test of PS-CNCs and ZIF-67 for polysulfides;
wherein a is PS-CNCs, and b is ZIF-67.
Detailed Description
The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.
Example 1
A preparation method of a polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material specifically comprises the following steps:
(1) preparation of precursor ZIF-67
Weighing 600mg of cobalt nitrate hexahydrate and 1.5g of 2-methylimidazole, respectively dissolving the cobalt nitrate hexahydrate and the 2-methylimidazole in 25mL of methanol solution, uniformly stirring by magnetic force, slowly pouring the 2-methylimidazole solution into the cobalt nitrate solution, standing at room temperature for reaction for 24 hours, centrifuging, and drying at constant temperature of 60 ℃ to obtain cobalt-based ZIF-67 as a precursor;
(2) preparation of sulfur-doped cobalt-based carbon nanocages (S-CNCs)
Weighing 90mg of the prepared precursor, dissolving the precursor in 30mL of absolute ethyl alcohol, carrying out ultrasonic treatment, adding 60mg of Thioacetamide (TAA), continuing to carry out ultrasonic treatment for 30min, putting the mixture into a reaction kettle, reacting in an oven at 120 ℃ for 2h, naturally cooling to room temperature, centrifuging three times by using absolute ethyl alcohol, and carrying out vacuum drying at 60 ℃;
(3) preparation of polypyrrole-coated sulfur-doped cobalt-based carbon nanocages (PS-CNCs)
Weighing 10mg of S-CNCs material, dissolving in 10mL of absolute ethyl alcohol, performing ultrasonic dispersion, adding 3mg of ferric p-toluenesulfonate and 24 mu L of pyrrole monomer, performing ultrasonic mixing uniformly, reacting for 24h, centrifuging for three times by using the absolute ethyl alcohol, and performing vacuum drying at 60 ℃ to finally obtain the polypyrrole-coated sulfur-doped cobalt-based carbon nanocage.
Preparation of PS-CNCs/S complexes
Weighing a proper amount of PS-CNCs and sublimed sulfur respectively according to the mass ratio of 1:3, grinding the PS-CNCs and the sublimed sulfur in a mortar for 30min, uniformly mixing, then placing the mixture in a reaction kettle, heating the mixture for 12h at 160 ℃, naturally cooling the mixture to room temperature, and taking out the mixture to obtain the PS-CNCs/S composite.
A half-cell assembly method, and test analysis is performed according to the method, comprising the following steps:
(1) preparation of half-cell active material slurry
Mixing PS-CNCs/S, Super P and polyvinylidene fluoride (PVDF) serving as a binder according to the mass ratio of 8:1:1, dissolving in NMP solvent, and fully stirring for 24 hours to obtain uniform electrode slurry;
(2) coating preparation of current collector
Fully ultrasonically treating and cleaning the cut carbon fiber paper current collector by using acetone, ethanol and deionized water respectively, drying in vacuum to obtain a clean current collector, and uniformly coating the prepared electrode slurry on the carbon fiber paper current collector to obtain an electrode in vacuum;
(3) half-cell assembly
And (3) assembling a CR2032 type lithium ion button battery in a glove box filled with argon by taking the prepared sample as a positive electrode, a commercial lithium sheet as a negative electrode and the electrolyte as a commercial lithium ion electrolyte.
The comparative sample was ZIF-67/S, and the method of assembling the cell was not changed.
FIG. 1 is a scanning electron microscope image of PS-CNCs. As can be seen from the figure, PS-CNCs are successfully prepared, have a better dodecahedron configuration, have a hollow structure inside, and have uniform particle size with the diameter range of 400-600 nm.
FIG. 2 is a scanning electron microscope image of PS-CNCs/S and ZIF-67/S. Wherein, fig. 2a is a PS-CNCs/S complex sample, and as can be seen from the figure, the PS-CNCs/S complex sample is in monodispersed and uniform distribution, has a dodecahedral structure, and is opaque inside, which indicates that some space inside the hollow structure thereof has been occupied by elemental sulfur; FIG. 2b shows a ZIF-67/S composite, also in a dodecahedral configuration, but with many regions cross-linked to each other, the hollow structure is not maintained, and the amount of elemental sulfur contained is reduced.
FIG. 3 is a test chart of cyclic voltammetry curves, rate capability and cyclic performance of PS-CNCs/S and ZIF-67/S. As can be seen from FIG. 3a, by analyzing the heavy redox peak position of the cyclic voltammogram, the result shows that the PS-CNCs/S complex is more easily oxidized and reduced during the cyclic process, and the smaller difference between the redox peaks also shows that the PS-CNCs/S complex has smaller polarization; by analyzing the rate performance test chart 3b, the specific discharge capacity of the PS-CNCs/S compound is higher than that of the ZIF-67/S compound, which indicates that the positive electrode of the PS-CNCs/S compound has good rate performance and reversibility; analysis of the cycle performance test chart 3C shows that the discharge specific capacity of the PS-CNCs/S composite is less attenuated after the PS-CNCs/S composite is cycled for 100 circles under the current density of 0.5C, which indicates that the cycle stability of the PS-CNCs/S composite electrode is far superior to that of a ZIF-67/S positive electrode.
FIG. 4 is a graph showing the adsorption capacity test of PS-CNCs and ZIF-67 for polysulfides. As can be seen from FIG. 4a, the prepared polysulfide solution shows dark black color after a certain mass of PS-CNCs is added into the solution, and the solution is observed to be nearly transparent and colorless after the solution is continuously kept standing and reacts in a glove box for several hours; and as shown in FIG. 4b, when equal amounts of ZIF-67 were added to equal amounts of polysulfide solution, which was visibly dark red, a lightening of the solution color, but still a darker color, was observed after further standing in the glove box for several hours, indicating that the solution still contained a large amount of polysulfide. Therefore, the polar PS-CNCs and polysulfide have strong adsorption, so that the shuttle effect in the circulation process is favorably inhibited, and the electrochemical performance is improved.
In conclusion, the polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material can contain more sulfur, has excellent performance as an anode active substance, can effectively relieve the problem of volume expansion, and can improve the interaction between polar PS-CNCs and polar polysulfide due to sulfur-cobalt co-doping, thereby being beneficial to inhibiting shuttle effect and improving the cycle performance of the battery.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and the simple modifications are within the protection scope of the present invention.
It should be noted that the technical features described in the above embodiments may be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
In addition, any combination of the various embodiments of the present patent can be made, and the same shall be considered as the disclosure of the present patent as long as the combination does not depart from the idea of the present patent.
Claims (7)
1. A preparation method of a polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material is characterized by comprising the following steps:
(1) and preparing a precursor ZIF-67:
weighing 500-600mg cobalt nitrate hexahydrate and a certain mass of 2-methylimidazole, respectively dissolving the cobalt nitrate hexahydrate and the 2-methylimidazole in 25mL methanol solution, uniformly stirring by magnetic force, pouring the 2-methylimidazole solution into the cobalt nitrate hexahydrate solution, standing at room temperature for reaction for 24 hours, and then carrying out centrifugal drying to prepare cobalt-based ZIF-67 serving as a precursor;
(2) preparing sulfur-doped cobalt-based carbon nanocages (S-CNCs):
weighing 90mg of the precursor prepared in the step (1), dissolving the precursor in 30mL of absolute ethyl alcohol, carrying out ultrasonic treatment, adding Thioacetamide (TAA) with a certain mass, continuing to carry out ultrasonic treatment for 20-30min, putting the mixture into a reaction kettle, reacting in an oven for 2h, naturally cooling to room temperature, centrifuging for three times, and carrying out vacuum drying to prepare the sulfur-doped cobalt-based carbon nanocage;
(3) preparing polypyrrole-coated sulfur-doped cobalt-based carbon nanocages (PS-CNCs):
weighing 10mg of the sulfur-doped cobalt-based carbon nanocage material prepared in the step (2), dissolving the material in 10mL of absolute ethyl alcohol, adding ferric p-toluenesulfonate and a proper amount of pyrrole monomer after ultrasonic dispersion, reacting for 24 hours after ultrasonic mixing, centrifuging for three times, and drying in vacuum.
2. The method for preparing a polypyrrole coated sulfur-doped cobalt-based carbon nanocage material according to claim 1, wherein the mass ratio of cobalt nitrate hexahydrate to 2-methylimidazole in the step (1) is 0.5-0.6:1-2, and the drying temperature is 60 ℃.
3. The method for preparing a polypyrrole coated sulfur-doped cobalt-based carbon nanocage material according to claim 1, wherein the mass ratio of Thioacetamide (TAA) to the precursor in the step (2) is 0.5-0.7:0.9-1.5, and the oven temperature ranges from 100 ℃ to 140 ℃.
4. The method for preparing a polypyrrole coated sulfur-doped cobalt-based carbon nanocage material according to claim 1, wherein the mass ratio of the sulfur-doped cobalt-based carbon nanocage to the iron tosylate in the step (3) is 1-1.2: 0.1-0.3, wherein the mass-volume ratio of the sulfur-doped cobalt-based carbon nanocages to the pyrrole monomer is 3-5 mg: 10-12 μ L.
5. The method for preparing a polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material according to claim 1, wherein a centrifugal solvent used in the centrifugation process is absolute ethyl alcohol, and the vacuum drying temperature is 60 ℃.
6. A polypyrrole coated sulfur doped cobalt-based carbon nanocage material is characterized by being prepared by the preparation method of the polypyrrole coated sulfur doped cobalt-based carbon nanocage material in any one of claims 1-5.
7. The application of the polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material in batteries according to claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911081431.4A CN110783549B (en) | 2019-11-07 | 2019-11-07 | Polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material, and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911081431.4A CN110783549B (en) | 2019-11-07 | 2019-11-07 | Polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material, and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110783549A CN110783549A (en) | 2020-02-11 |
| CN110783549B true CN110783549B (en) | 2022-05-31 |
Family
ID=69390039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911081431.4A Active CN110783549B (en) | 2019-11-07 | 2019-11-07 | Polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material, and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110783549B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111969187A (en) * | 2020-07-30 | 2020-11-20 | 广东格林赛福能源科技有限公司 | Preparation method, material and application of high-performance CoSe/C-NS composite material |
| CN113097468B (en) * | 2021-04-09 | 2023-04-14 | 扬州大学 | C/CoSe 2 Preparation method and application of @ NC composite material |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078685A (en) * | 2014-06-27 | 2014-10-01 | 哈尔滨工业大学 | Polyvinylpyrrolidone modified graphene coated sulfur/porous carbon composite anode material and preparation method thereof |
| CN106450200A (en) * | 2016-10-25 | 2017-02-22 | 福建师范大学 | Cos@carbon nano-cage as well as preparation method and application thereof |
| US9590248B2 (en) * | 2013-03-12 | 2017-03-07 | Uchicago Argonne, Llc | Porous graphene nanocages for battery applications |
| CN108649198A (en) * | 2018-05-08 | 2018-10-12 | 南开大学 | A kind of synthetic method of the nitrogen of cobalt insertion, the carbon nanomaterial of sulphur codope |
| CN108767276A (en) * | 2018-05-16 | 2018-11-06 | 陕西科技大学 | A kind of preparation method of lithium-oxygen battery N doping porous carbon@cobalt-base catalyst nanocages composite materials |
| CN108987759A (en) * | 2018-07-03 | 2018-12-11 | 河南师范大学 | The application of nickel, cobalt, sulphur, boron codope carbon material in zinc-air battery catalyst |
| CN109289894A (en) * | 2018-10-19 | 2019-02-01 | 浙江大学 | A kind of phosphatization cobalt/nitrogen mixes porous carbon composite catalytic material and its preparation method and application |
| CN110212162A (en) * | 2019-05-22 | 2019-09-06 | 南京大学 | A kind of lithium-sulfur cell flexible gel sulphur anode and preparation method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10329435B2 (en) * | 2014-07-01 | 2019-06-25 | University Of Utah Research Foundation | Electrothermal coating with nanostructures mixture and method for making the same |
-
2019
- 2019-11-07 CN CN201911081431.4A patent/CN110783549B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9590248B2 (en) * | 2013-03-12 | 2017-03-07 | Uchicago Argonne, Llc | Porous graphene nanocages for battery applications |
| CN104078685A (en) * | 2014-06-27 | 2014-10-01 | 哈尔滨工业大学 | Polyvinylpyrrolidone modified graphene coated sulfur/porous carbon composite anode material and preparation method thereof |
| CN106450200A (en) * | 2016-10-25 | 2017-02-22 | 福建师范大学 | Cos@carbon nano-cage as well as preparation method and application thereof |
| CN108649198A (en) * | 2018-05-08 | 2018-10-12 | 南开大学 | A kind of synthetic method of the nitrogen of cobalt insertion, the carbon nanomaterial of sulphur codope |
| CN108767276A (en) * | 2018-05-16 | 2018-11-06 | 陕西科技大学 | A kind of preparation method of lithium-oxygen battery N doping porous carbon@cobalt-base catalyst nanocages composite materials |
| CN108987759A (en) * | 2018-07-03 | 2018-12-11 | 河南师范大学 | The application of nickel, cobalt, sulphur, boron codope carbon material in zinc-air battery catalyst |
| CN109289894A (en) * | 2018-10-19 | 2019-02-01 | 浙江大学 | A kind of phosphatization cobalt/nitrogen mixes porous carbon composite catalytic material and its preparation method and application |
| CN110212162A (en) * | 2019-05-22 | 2019-09-06 | 南京大学 | A kind of lithium-sulfur cell flexible gel sulphur anode and preparation method |
Non-Patent Citations (1)
| Title |
|---|
| "MOF-derived NiO–NiCo2O4@PPy hollow polyhedron as a sulfur immobilizer for lithium–sulfur batteries";Xu Fengchao 等;《New Journal of Chemistry》;20191021;第43卷;第18294-18303页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110783549A (en) | 2020-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104716319B (en) | Carbon-clad metal sulfide electrode material and its preparation method and application | |
| CN113937286B (en) | Coated modified sodium ion battery positive electrode material, preparation method thereof and battery | |
| CN112133897B (en) | Method for reducing surface alkali amount of positive electrode material and improving electrochemical performance through wet coating | |
| CN110034288A (en) | A kind of lithium-sulphur cell positive electrode graphene grafted polypyrrole nanotube/sulphur composite material preparation method | |
| CN112490394B (en) | Chemical prelithiation method for graphite electrode of lithium ion battery | |
| CN109742391B (en) | High-nickel lithium ion battery, battery positive electrode material and preparation method thereof | |
| CN107221661A (en) | A kind of preparation method of graphite negative material of lithium ion battery | |
| CN115566170B (en) | Preparation method of high-energy-density quick-charging lithium ion battery anode material | |
| CN110783549B (en) | Polypyrrole-coated sulfur-doped cobalt-based carbon nanocage material, and preparation method and application thereof | |
| Zhang et al. | Synthesis of spherical Al-doping LiMn 2 O 4 via a high-pressure spray-drying method as cathode materials for lithium-ion batteries | |
| CN114751393A (en) | Nitrogen-sulfur co-doped porous carbon/sulfur composite material and preparation method and application thereof | |
| Kumar et al. | Solid-state Mg/MnO2 cell employing a gel polymer electrolyte of magnesium triflate | |
| CN113937261B (en) | Lithium-sulfur battery positive electrode material, preparation method thereof and lithium-sulfur battery positive electrode plate | |
| CN113611854B (en) | Prussian blue derived core-shell cubic material, and preparation method and application thereof | |
| CN104852042A (en) | Preparation method and application of cobalt-iron composite oxide nanorods for lithium ion battery anode material | |
| CN112670486B (en) | Modified lithium titanate electrode material and preparation method thereof | |
| CN113871605A (en) | Pre-lithiated silicon-based negative electrode material and preparation method and application thereof | |
| Wu et al. | Effects of pretreatment of natural graphite by oxidative solutions on its electrochemical performance as anode material | |
| CN117497723A (en) | Preparation method of MOF-derived carbon-coated silicon nanoparticle-limited MXene composite anode material of lithium ion battery | |
| CN114094063B (en) | Method for preparing battery anode material by combining cavity precursor and ZIF derivative | |
| CN115799608A (en) | Method for improving interface between inorganic phase filler and polymer in composite solid electrolyte and application thereof | |
| Wu et al. | Anode materials for lithium ion batteries obtained by mild and uniformly controlled oxidation of natural graphite | |
| CN114050266B (en) | Selenium disulfide composite nitrogen-doped reduced graphene oxide positive electrode material, preparation method thereof, lithium-selenium disulfide battery and power-related equipment | |
| CN113247903B (en) | Porous Ti 3 C 2 SnO nano material and preparation method and application thereof | |
| CN114843509B (en) | Organic positive electrode material, carbon-coated organic positive electrode material, preparation method and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |