CN105280900A - Tungsten disulfide/graphene nanobelt composite material and preparation method thereof - Google Patents

Tungsten disulfide/graphene nanobelt composite material and preparation method thereof Download PDF

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CN105280900A
CN105280900A CN201510607188.0A CN201510607188A CN105280900A CN 105280900 A CN105280900 A CN 105280900A CN 201510607188 A CN201510607188 A CN 201510607188A CN 105280900 A CN105280900 A CN 105280900A
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tungsten disulfide
graphene nano
graphene
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graphene nanobelt
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刘天西
张龙生
鲁恒毅
樊玮
缪月娥
黄云鹏
顾华昊
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Fudan University
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/58Selection 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
    • H01M4/581Chalcogenides or intercalation compounds thereof
    • H01M4/5815Sulfides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/02Sulfur, selenium or tellurium; Compounds thereof
    • B01J27/04Sulfides
    • B01J27/047Sulfides with chromium, molybdenum, tungsten or polonium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00Nanotechnology for materials or surface science, e.g. nanocomposites
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00Manufacture or treatment of nanostructures
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02Details
    • H01L31/0224Electrodes
    • H01L31/022408Electrodes for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/022425Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/362Composites
    • H01M4/364Composites as mixtures
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624Electric conductive fillers
    • H01M4/625Carbon or graphite
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The invention belongs to the technical field of transition metal sulfide-carbon materials, and particularly discloses a tungsten disulfide/graphene nanobelt composite material and a preparation method thereof. A graphene nanobelt disclosed by the invention is prepared through solution oxidation, and the tungsten disulfide/graphene nanobelt composite material is formed by tungsten disulfide nanosheets in an in-situ growth manner on the graphene nanobelt through a one-step solvothermal method. The graphene nanobelt prepared by the invention has the advantages of stable chemical property, high conductivity and the like; and the composite material prepared by the invention has the characteristic of morphology controllability, and the tungsten disulfide nanosheets are uniformly loaded on the graphene nanobelt, so that the adhesion of tungsten disulfide is effectively inhibited, and unique high specific surface area and high conductivity of the graphene nanobelt are fully utilized. The tungsten disulfide/graphene nanobelt composite material prepared by the invention can become an ideal high-performance electrocatalytic material and an electrode material of new energy devices such as lithium ion batteries and solar cells.

Description

A kind of tungsten disulfide/graphene nano belt composite and preparation method thereof
Technical field
The invention belongs to transient metal sulfide-material with carbon element technical field, be specifically related to a kind of tungsten disulfide/graphene nano belt composite and preparation method thereof.
Technical background
Graphene nanobelt is a kind of accurate one dimension c-based nanomaterial, and it has the physical and chemical performance of many excellences, as higher conductivity, excellent mechanical property, special edge effect and good chemical stability etc.These special natures make it all have very wide application prospect in fields such as power conversion and storage, electronic sensor, high molecule nano composite materials, become one of study hotspot in carbon nanomaterial field.
Tungsten disulfide is the Transition-metal dichalcogenide of a quasi-representative, and it belongs to hexagonal crystal system, and be very strong S-W-S covalent bond in layer, interlayer is more weak Van der Waals force, and thickness in monolayer is about 0.65nm.The tungsten disulfide nano slices layer of individual layer can obtain by the method for tape stripping or lithium ion intercalation.Research shows, the active edge that tungsten disulfide exposes has catalytic activity for hydrogen evolution, therefore has extensive use in electrochemical catalysis field.But pure tungsten disulfide is easy to reunite, and the endothecium structure of its preferred growth inertia, but not active lamella edge, a large amount of aggregates also further suppress the exposure at active edge, adds the conductivity that it is poor, and the excellent properties of pure tungsten disulfide cannot be fully used.Therefore, by significant for the base material compound of tungsten disulfide and other high conductivity.
The present invention, by simple technological design, prepares a kind of novel tungsten disulfide/graphene nano belt composite.This composite material has following advantage: the edge effect of graphene nanobelt uniqueness more can grow site for the growth of tungsten disulfide nano slices provides, and the active edge of tungsten disulfide nano slices is exposed more fully; The excellent electric conductivity of graphene nanobelt is conducive to the transmission of electronics, can improve the conductivity of composites; The lamella structure of graphene nanobelt is conducive to the migration of electrolyte ion in electrochemical process, thus reduces the contact internal resistance of itself and solution.And tungsten disulfide nano slices itself possesses excellent catalytic activity and stored energy performance, therefore both are carried out effective compound and can realize good synergy, to prepare the composite material of excellent performance.
Summary of the invention
Tungsten disulfide/graphene nano belt composite that the object of the present invention is to provide a kind of electrochemical performance and preparation method thereof.
Tungsten disulfide provided by the present invention/graphene nano belt composite, consists of the tungsten disulfide nano slices of step solvent-thermal method growth in situ on described graphene nanobelt the graphene nanobelt and sulfo-ammonium tungstate with special band edge; Its raw materials composition comprises: carbon nano-tube (single wall or many walls), potassium permanganate, the concentrated sulfuric acid, phosphoric acid, sulfo-ammonium tungstate, and hydrazine hydrate.
The preparation method of tungsten disulfide provided by the present invention/graphene nano belt composite, prepares graphene nanobelt by solution oxide method; Again by step solvent-thermal method growth in situ tungsten disulfide nano slices on graphene nanobelt; Concrete steps are as follows:
(1) by carbon nanotube dispersed in the concentrated sulfuric acid of 95% ~ 98%, after being uniformly dispersed, adding the phosphoric acid of a certain amount of 85% again, in the process, constantly stirring and obtain homogeneous dispersion liquid;
(2) in above-mentioned dispersion liquid, potassium permanganate is added, Keep agitation;
(3) reaction system is slowly heated up, after temperature stabilization, insulation, and constantly stir;
(4) mixed solution of gained is naturally cooled to room temperature, then pour in the frozen water containing hydrogen peroxide, placement overnight, make its natural subsidence;
(5) the sediment aqueous hydrochloric acid solution obtained is washed repeatedly, then wash repeatedly with the mixed solution of ethanol/ether;
(6) centrifugal drying obtains solid oxidation graphene nanobelt;
(7) stannic oxide/graphene nano band is scattered in organic solvent, ultrasonicly obtains stannic oxide/graphene nano band stable dispersions;
(8) sulfo-ammonium tungstate is dissolved in stannic oxide/graphene nano band dispersion liquid, ultrasonicly makes it be uniformly dispersed, obtain sulfo-ammonium tungstate/stannic oxide/graphene nano band dispersion liquid;
(9) instilled by hydrazine hydrate solution in the mixed dispersion liquid of sulfo-ammonium tungstate and stannic oxide/graphene nano band, ultrasonic disperse is even;
(10) the prepared dispersion liquid containing stannic oxide/graphene nano band, sulfo-ammonium tungstate and hydrazine hydrate is put into water heating kettle, organic solvent thermal response a period of time, by the black precipitate deionized water for preparing and ethanol cyclic washing repeatedly, tungsten disulfide/graphene nano belt composite is namely obtained.
In the present invention, described stannic oxide/graphene nano band cuts off carbon nano-tube by solution oxide method radial direction to prepare, about the method referenced patent US2010/0105834Al.
In the present invention, described organic solvent comprises n, N-dimethyl formamide, n, N-dimethylacetylamide and n-methyl pyrrolidone, preferably n, N-dimethyl formamide.
In the present invention, the concentration of the carbon nano-tube described in step (1) is 3 ~ 5mgmL -1, the volume ratio of the concentrated sulfuric acid and phosphoric acid is 8:1 ~ 10:1, is preferably 9:1.
In the present invention, the quality of the potassium permanganate described in step (2) is 2 ~ 5 times of carbon nano-tube consumption, preferably adds potassium permanganate in batches.
In the present invention, the temperature reached after step (3) described intensification is 60 ~ 80 DEG C, and the time of insulation is 2 ~ 3h.
In the present invention, the weight concentration of the aqueous hydrochloric acid solution described in step (5) is 5 ~ 20%.
In the present invention, the concentration of the stannic oxide/graphene nano band dispersion liquid described in step (7) is 0.5 ~ 2mgmL -1, preferably 1 ~ 1.5mgmL -1.
In the present invention, the stannic oxide/graphene nano band described in step (8) and the mass ratio of sulfo-ammonium tungstate are 1:1 ~ 1:4.
In the present invention, the concentration of the hydrazine hydrate described in step (9) is 30% ~ 80%, and consumption is 0.1 ~ 0.2mL.
In the present invention, the reaction temperature described in step (10) is 220 ~ 260 DEG C, and the reaction time is 10 ~ 24h.
Use transmission electron microscope (TEM), scanning electron microscopy (SEM), X-ray diffractometer (XRD) to characterize the structure and morphology of tungsten disulfide/graphene nano belt composite that the present invention obtains, its result is as follows:
(1) TEM test result shows, by solution oxide method, the inner wall layer border of graphene nanobelt disappears, and confirms that carbon nano-tube is cut off by radial direction.Prepared graphene nanobelt has high draw ratio and special band edge, and compared to original carbon nanotubes, its size increases, and bandwidth is about 100nm, and its higher specific area is that the growth of tungsten disulfide nano slices provides and more grows site.See accompanying drawing 1.In tungsten disulfide/graphene nano belt composite, tungsten disulfide nano slices grows the surface at graphene nanobelt equably, the tungsten disulfide nano slices number of plies is less, be about 5 ~ 10 layers, this thinner tungsten disulfide nano slices provides more active edge, thus its catalytic activity and stored energy performance are significantly improved.See accompanying drawing 2.
(2) SEM test result shows: in tungsten disulfide/graphene nano belt composite, tungsten disulfide nano slices grows equably on graphene nanobelt, restrained effectively the reunion of tungsten disulfide self, the active edge of tungsten disulfide nano slices layer is exposed fully.This has benefited from the band edge structure of graphene nanobelt and high specific area, gives its adjustability more flexibly, and this is also that it is different from the principal character of Sheet Graphite alkene.See accompanying drawing 3.
(3) XRD test result shows, prepared stannic oxide/graphene nano band has a stronger diffraction maximum in 2 θ=10 °, illustrate that nanobelt structure is successfully peeled off or cut off into carbon nano-tube.Graphene nanobelt after reduction has a wider diffraction maximum in 2 θ=26 °, correspond to (002) crystal face.Prepared tungsten disulfide/graphene nano belt composite demonstrates the characteristic peak of tungsten disulfide, and in 2 θ=14 °, 33 °, diffraction maximum appears in 40 ° and 59 ° of places, corresponds respectively to (002) of tungsten disulfide, (101), (103) and (100) crystal face.See accompanying drawing 4.
The invention has the advantages that:
1, preparation process is simple, is easy to operation, is a kind of convenient effective preparation method;
2, experimental design is ingenious;
The first, the substrate of selection is graphene nanobelt.The draw ratio of its uniqueness and marginal texture impart its high specific area, and provide more site for tungsten disulfide nano slices growth.Graphene nanobelt has excellent conductivity, and its lamellar structure makes electronics and ion in electro-catalysis process to transmit effective and rapidly, can further improve catalytic activity and the stored energy performance of tungsten disulfide;
The second, achieved the compound of quasi one-dimensional material and two-dimensional material by simple solvent thermal process, both advantages are given full play to, thus constructs the composite material with excellent properties.
Tungsten disulfide prepared by the present invention/graphene nano belt composite, can be used as the ideal electrode material of high performance catalyst material and the novel energy such as lithium ion battery, solar cell.
Accompanying drawing explanation
Fig. 1 is the TEM figure of material in the present invention.Wherein, (A) multi-walled carbon nano-tubes, (B) graphene nanobelt.
Fig. 2 is the TEM figure of tungsten disulfide of the present invention/graphene nano belt composite.
Fig. 3 is the SEM figure of tungsten disulfide of the present invention/graphene nanobelt composite material.
Fig. 4 is the XRD figure of tungsten disulfide of the present invention/graphene nano belt composite.
Embodiment
Below in conjunction with instantiation, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition, after the content of having read the present invention's instruction, those skilled in the art can make various change or amendment to the present invention, and these equivalent form of values fall within the application's appended claims limited range equally.
embodiment 1,the present embodiment comprises the following steps:
(1) 150mg multi-walled carbon nano-tubes is scattered in the concentrated sulfuric acid of 98%, after being uniformly dispersed, adding the phosphoric acid of 85% again, constantly stir in the process and obtain homogeneous dispersion liquid;
(2) in above-mentioned dispersion liquid, add 750mg potassium permanganate, add in batches, constantly stir;
(3) reaction system is slowly warming up to 70 DEG C, after temperature stabilization, insulation a period of time, and constantly stir;
(4) mixed dispersion liquid of gained is naturally cooled to room temperature, then pour in the frozen water containing 7mL50% hydrogen peroxide, placement overnight, make its natural subsidence;
(5) by the sediment that obtains with 10% aqueous hydrochloric acid solution washing repeatedly, then to wash repeatedly with the mixed solution of ethanol/ether;
(6) centrifugal drying obtains solid oxidation graphene nanobelt;
(7) stannic oxide/graphene nano band is scattered in n, N-in dimethyl formamide, the ultrasonic 1mgmL obtaining stable dispersion -1stannic oxide/graphene nano band;
(8) 11mg sulfo-ammonium tungstate is dissolved in 10mL stannic oxide/graphene nano band dispersion liquid, ultrasonicly makes it be uniformly dispersed;
(9) by the hydrazine hydrate of 0.2mL50%, in the mixed dispersion liquid of instillation stannic oxide/graphene nano band and sulfo-ammonium tungstate, ultrasonic disperse is even;
(10) the prepared dispersion liquid containing stannic oxide/graphene nano band, sulfo-ammonium tungstate and hydrazine hydrate is put into water heating kettle, hydro-thermal reaction 12h at 240 DEG C, by the black precipitate deionized water for preparing and ethanol cyclic washing repeatedly, tungsten disulfide nano slices/graphene nano belt composite can be obtained be designated as GNRWS 2 -1.
embodiment 2,the quality of the sulfo-ammonium tungstate in embodiment 1 is become 22mg, and all the other are all with embodiment 1, and final obtained composite material is designated as GNRWS 2-2.
embodiment 3,the quality of the sulfo-ammonium tungstate in embodiment 1 is become 44mg, and all the other are all with embodiment 1, and final obtained composite material is designated as GNRWS 2-3.

Claims (10)

1. a preparation method for tungsten disulfide/graphene nano belt composite, is characterized in that: prepare graphene nanobelt by solution oxide method; Again by step solvent-thermal method growth in situ tungsten disulfide nano slices on graphene nanobelt; Concrete steps are as follows:
(1) by carbon nanotube dispersed in the concentrated sulfuric acid of 95% ~ 98%, after being uniformly dispersed, adding the phosphoric acid of a certain amount of 85% again, in the process, constantly stirring and obtain homogeneous dispersion liquid;
(2) in above-mentioned dispersion liquid, potassium permanganate is added, Keep agitation;
(3) reaction system is slowly warmed up to 60 ~ 80 DEG C, after temperature stabilization, insulation 2 ~ 3h, and constantly stir;
(4) mixed solution of gained is naturally cooled to room temperature, then pour in the frozen water containing hydrogen peroxide, placement overnight, make its natural subsidence;
(5) the sediment aqueous hydrochloric acid solution obtained is washed repeatedly, then wash repeatedly with the mixed solution of ethanol/ether;
(6) centrifugal drying obtains solid oxidation graphene nanobelt;
(7) stannic oxide/graphene nano band is scattered in organic solvent, ultrasonicly obtains stannic oxide/graphene nano band stable dispersions;
(8) sulfo-ammonium tungstate is dissolved in stannic oxide/graphene nano band dispersion liquid, ultrasonicly makes it be uniformly dispersed, obtain sulfo-ammonium tungstate/stannic oxide/graphene nano band dispersion liquid;
(9) instilled by hydrazine hydrate solution in the mixed dispersion liquid of sulfo-ammonium tungstate and stannic oxide/graphene nano band, ultrasonic disperse is even;
(10) the prepared dispersion liquid containing stannic oxide/graphene nano band, sulfo-ammonium tungstate and hydrazine hydrate is put into water heating kettle, organic solvent thermal response, reaction temperature is 220 ~ 260 DEG C, reaction time is 10 ~ 24h, by the black precipitate deionized water for preparing and ethanol cyclic washing repeatedly, tungsten disulfide/graphene nano belt composite is namely obtained.
2. the preparation method of tungsten disulfide according to claim 1/graphene nano belt composite, is characterized in that, described organic solvent is n, N-dimethyl formamide, n, N-dimethylacetylamide or n-methyl pyrrolidone.
3. the preparation method of tungsten disulfide according to claim 1/graphene nano belt composite, is characterized in that, the concentration of the carbon nano-tube described in step (1) is 3 ~ 5mgmL -1, the volume ratio of the concentrated sulfuric acid and phosphoric acid is 8:1 ~ 10:1.
4. the preparation method of tungsten disulfide according to claim 1/graphene nano belt composite, is characterized in that, the quality of the potassium permanganate described in step (2) is 2 ~ 5 times of carbon nano-tube consumption.
5. the preparation method of tungsten disulfide according to claim 1/graphene nano belt composite, is characterized in that, the aqueous hydrochloric acid solution weight concentration described in step (5) is 5 ~ 20%.
6. the preparation method of tungsten disulfide according to claim 1/graphene nano belt composite, is characterized in that, the concentration of the stannic oxide/graphene nano band dispersion liquid described in step (7) is 0.5 ~ 2mgmL -1.
7. the preparation method of tungsten disulfide according to claim 1/graphene nano belt composite, is characterized in that, the mass ratio of the stannic oxide/graphene nano band described in step (8) and sulfo-ammonium tungstate is 1:1 ~ 1:4.
8. the preparation method of tungsten disulfide according to claim 1/graphene nano belt composite, is characterized in that, the concentration of hydrazine hydrate described in step (9) is 30% ~ 80%, and consumption is 0.1 ~ 0.2mL.
9. the tungsten disulfide that the preparation method as described in one of claim 1 ~ 8 prepares/graphene nano belt composite.
10. tungsten disulfide/graphene nano belt composite as claimed in claim 9 is as high-performance electric catalysis material, and the application of electrode material as lithium ion battery and solar cell.
CN201510607188.0A 2015-09-22 2015-09-22 Tungsten disulfide/graphene nanobelt composite material and preparation method thereof Pending CN105280900A (en)

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CN105839398A (en) * 2016-04-26 2016-08-10 复旦大学 Nanosheet-layer tungsten disulfide reinforced carbon fiber sizing agent and preparation method thereof
CN106229359A (en) * 2016-07-29 2016-12-14 中国地质大学(北京) A kind of efficient photoelectricity treater transducer based on carbon fiber@tungsten disulfide nano slices core-shell structure and preparation method thereof
CN106229359B (en) * 2016-07-29 2017-08-29 中国地质大学(北京) A kind of efficient photoelectricity treater converter based on carbon fiber@tungsten disulfide nano slices core-shell structures and preparation method thereof
CN106229509B (en) * 2016-08-22 2018-09-25 河南师范大学 A method of preparing single layer 2H phases tungsten disulfide/graphene composite material
CN106229509A (en) * 2016-08-22 2016-12-14 河南师范大学 A kind of method preparing monolayer 2H phase tungsten disulfide/graphene composite material
CN106277059A (en) * 2016-08-22 2017-01-04 齐齐哈尔大学 A kind of method preparing tungsten disulfide/Graphene heterojunction structure
CN106315677A (en) * 2016-08-22 2017-01-11 河南师范大学 Method for preparing single-layer 1T-phase tungsten disulfide/graphene composite
CN106898750A (en) * 2017-03-28 2017-06-27 苏州大学 Metal sulphur battery based on sulfur-rich transient metal sulfide and preparation method thereof
CN107565110A (en) * 2017-08-25 2018-01-09 南陵县生产力促进中心 A kind of multidimensional nano composite material for Anode of lithium cell and preparation method thereof
CN107803208A (en) * 2017-11-14 2018-03-16 湘潭大学 A kind of microwave catalyst, its preparation method and the method that hydrogen sulfide is catalytically decomposed
CN108641356A (en) * 2018-05-17 2018-10-12 西北工业大学 Graphene/class graphene WS of three phosphonitrilic polymer of ring modification2/ Bismaleimide composites and preparation method
CN108641356B (en) * 2018-05-17 2020-10-27 西北工业大学 Cyclotriphosphazene polymer modified graphene/graphene-like WS2Bismaleimide composite material and preparation method thereof
CN111229256A (en) * 2018-11-28 2020-06-05 中国科学院大连化学物理研究所 Supported single-layer and few-layer two-dimensional transition metal sulfide catalyst and preparation method thereof
CN111229256B (en) * 2018-11-28 2023-05-26 中国科学院大连化学物理研究所 Supported single-layer and few-layer two-dimensional transition metal sulfide catalyst and preparation method thereof
CN110880597A (en) * 2019-11-28 2020-03-13 陕西科技大学 Tungsten sulfide/CNTs @ C composite electrode material and preparation method thereof
CN113617368A (en) * 2020-04-22 2021-11-09 山东海科创新研究院有限公司 Tungsten disulfide/molybdenum disulfide/graphene composite material with layered structure and preparation method and application thereof
CN113617368B (en) * 2020-04-22 2023-08-01 山东海科创新研究院有限公司 Tungsten disulfide/molybdenum disulfide/graphene composite material with layered structure, and preparation method and application thereof
CN114772644A (en) * 2022-03-28 2022-07-22 西南科技大学 Preparation and application of surface oxidized tungsten disulfide nanosheet for treating radioactive wastewater

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