CN108470890A - A kind of application of the preparation method of nitrogen sulphur codope three-dimensional grapheme, its product and the product that prepare - Google Patents

A kind of application of the preparation method of nitrogen sulphur codope three-dimensional grapheme, its product and the product that prepare Download PDF

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CN108470890A
CN108470890A CN201810212106.6A CN201810212106A CN108470890A CN 108470890 A CN108470890 A CN 108470890A CN 201810212106 A CN201810212106 A CN 201810212106A CN 108470890 A CN108470890 A CN 108470890A
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dimensional grapheme
preparation
sulphur codope
nitrogen sulphur
dimensional
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黄剑锋
席乔
李嘉胤
曹丽云
程娅伊
齐慧
郭玲
党欢
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Shaanxi University of Science and Technology
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Shaanxi University of Science and Technology
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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
    • H01M4/362Composites
    • H01M4/364Composites as mixtures
    • 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
    • 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
    • H01M4/58Selection 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
    • H01M4/583Carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H01M4/587Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
    • 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
    • H01M4/628Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
    • 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 present invention provides a kind of preparation method of nitrogen sulphur codope three-dimensional grapheme.Graphene oxide is scattered in deionization, graphene oxide dispersion is obtained, the ethanol solution of melamine powder and trithiocyanuric acid is then added, is fitted into after being uniformly dispersed in water heating kettle and carries out hydro-thermal reaction;Hydrothermal product is dried, is finally heat-treated.Application the present invention also provides the nitrogen sulphur codope three-dimensional grapheme and the graphene as electrode material.Product prepared by the present invention, nitrogen element content is 3 ~ 10%, and sulfur content is 0.5 ~ 3%.The invention has the advantages that experimental method is safe and non-toxic, and it is of low cost, it is easy to operate.Doping, three dimensional stress construction and redox graphene are realized using hydro-thermal method.Prepared doping three-dimensional grapheme large specific surface area, can be in lithium ion battery, the application of the fields such as ultracapacitor and electro-catalysis.

Description

A kind of preparation method of nitrogen sulphur codope three-dimensional grapheme, its product prepared and should The application of product
Technical field
The present invention relates to carbon nanomaterial field, more particularly to a kind of preparation method of nitrogen sulphur codope three-dimensional grapheme, The application of its product prepared and the product.
Background technology
The two dimensional crystal for the monoatomic layer thickness that graphene is made of carbon atom, the material with perfect structure of being known as Material, because of its large specific surface area, conductivity is high, the big feature of intensity and be considered can be used as high lithium storage materials.However, experiment and reason Prove bright, the active site of pure graphene is inadequate, does not have selectivity, does not have good matching degree in practical applications.It grinds Study carefully and shows(Electrochimica Acta, 2016, 205:188-197.)Exotic atom doping can effectively solve answering for graphene With problem, defect is introduced to provide active site.The doping method of exotic atom have CVD, epitaxial growth, arc discharge method, pyrolysis, Hydro-thermal method, plasma method etc..And the methods of CVD, epitaxial growth are of high cost, experiment condition is harsh, it is difficult to realize extensive system It is standby.In contrast, hydro-thermal method is at low cost, easy realization and can prepare uniform nano material and receive the favor of researcher.
Invention content
In order to overcome the above problem of the prior art, the purpose of the present invention is to provide a kind of nitrogen sulphur codope three-dimensional graphites The preparation method of alkene, its application of the product and the product that prepare as electrode material.The method safety of the present invention is nontoxic, cost It is cheap, it is easy to operate.The controllable nitrogen sulfur doping graphene large specific surface area of the doping of preparation, can be super in lithium ion battery It applies in the fields such as capacitor and electro-catalysis.
In order to achieve the above objectives, present invention employs following technical schemes:
A kind of preparation method of nitrogen sulphur codope three-dimensional grapheme, specific steps include:
(1)Hydro-thermal reaction prepares precursor:Graphene oxide is scattered in deionized water first, obtains graphene oxide dispersion Then liquid is added the ethanol solution of melamine powder and trithiocyanuric acid, is fitted into after stirring evenly in water heating kettle and carries out hydro-thermal Reaction.After the completion of hydro-thermal reaction, freeze-drying obtains presoma.
(2)Heat treatment prepares three-dimensional doped graphene:Presoma is placed in tube furnace, argon gas protection is passed to and carries out hot place Reason.
Preferably, the step(1)Middle graphene oxide, melamine, trithiocyanuric acid mass ratio be 1:0.3~ 2.5:0.4~3.5。
Preferably, the step(1)A concentration of mg/ml of 4 mg/ml ~ 10 of middle graphene oxide dispersion.
Preferably, the step(1)Described in the volume ratio of deionized water and ethanol consumption be 1:1~2.5.
Preferably, the step(1)Middle whipping temp is 70 ~ 120 DEG C, and mixing time is 10 ~ 60 min.
Preferably, the step(1)The reaction temperature of middle hydro-thermal reaction is 120 ~ 200 DEG C, and the reaction time is 4 ~ 36 h.
Preferably, the step(1)The packing ratio of middle hydro-thermal reaction is the % of 35 % ~ 50.
Preferably, the step(1)The heating rate of middle heat treatment is 2 ~ 10 DEG C/min, and holding temperature is 600 ~ 1000 DEG C, soaking time is 1 ~ 5h.
Advantageous effect of the invention is embodied in:
The present invention is poly- and form carbon skeleton and support graphene using melamine and trithiocyanuric acid supermolecule, inhibit graphene because The reunion that Van der Waals force and π-π are stacked.Meanwhile melamine and trithiocyanuric acid be as nitrogen source and sulphur source, in hydro-thermal reaction and It is heat-treated in journey and realizes nitrogen element sulphur codope.The invention has the advantages that realizing that doping, three dimensional stress construct simultaneously using hydro-thermal method And redox graphene.Its nitrogen element content is 3 ~ 7%, and for sulfur content 1 ~ 3%, doping is controllable;In addition, graphene It can be automatically assembled into three-dimensional shape graphene in hydro-thermal reaction, possibility is provided for large specific surface area;Experimental method is safe and non-toxic, It is of low cost, it is easy to operate.Prepared doping three-dimensional grapheme, can be in lithium ion battery, ultracapacitor and electro-catalysis Equal fields application.Therefore method provided by the invention has broad application prospects.
Description of the drawings
Fig. 1 is the scanning electron microscopy of the nitrogen sulphur codope three-dimensional grapheme prepared by embodiment 2(SEM)Photo;
Fig. 2 is the X-ray energy spectrum of the nitrogen sulphur codope three-dimensional grapheme prepared by embodiment 2(XPS)Spectrogram;
Fig. 3 is cyclic voltammetric of the nitrogen sulphur codope three-dimensional grapheme as lithium ion battery negative material prepared by embodiment 2 Curve.
Specific implementation mode
The present invention is further elaborated With reference to embodiment, but the present invention is not limited to following implementation Example.
Embodiment 1
(1)Hydro-thermal reaction prepares precursor:100mg graphene oxides are scattered in 10ml deionized waters first, are aoxidized Graphene dispersing solution, is then added 0.03g melamines, and 80 DEG C of stirrings obtain A liquid to being completely dissolved;Separately take tri- polysulfides of 0.04g Cyanic acid is dissolved in 25ml ethyl alcohol, after obtain B liquid;B liquid is slowly added in A liquid, is fitted into water heating kettle after 70 DEG C of stirring 10min, Packing ratio is 35%, 120 DEG C/4h of hydro-thermal reaction.After the completion of hydro-thermal reaction, freeze-drying obtains presoma.
(2)Heat treatment prepares three-dimensional doped graphene:Presoma is placed in tube furnace, pass to argon gas protection, with 2 DEG C/ The heating rate of min is warming up to 600 DEG C of heat preservation 5h.
Embodiment 2
(1)Hydro-thermal reaction prepares precursor:100mg graphene oxides are scattered in 25ml deionized waters first, are aoxidized Graphene dispersing solution, is then added 0.13g melamines, and 80 DEG C of stirrings obtain A liquid to being completely dissolved;Separately take tri- polysulfides of 0.18g Cyanic acid is dissolved in 25ml ethyl alcohol, after obtain B liquid;B liquid is slowly added in A liquid, is fitted into water heating kettle after 80 DEG C of stirring 60min, Packing ratio is 50%, 200 DEG C/12h of hydro-thermal reaction.After the completion of hydro-thermal reaction, freeze-drying obtains presoma.
(2)Heat treatment prepares three-dimensional doped graphene:Presoma is placed in tube furnace, pass to argon gas protection, with 5 DEG C/ The heating rate of min is warming up to 700 DEG C of heat preservation 2h.
Referring to Fig.1, Fig. 1 is the SEM photograph that the present embodiment prepares sample.Electricity is scanned with the S-4800 types of Japan Electronics Corporation Sub- microscope(SEM)Morphology observation is carried out, can significantly be seen three-dimensional made of being assembled by the graphene of nanometer grade thickness Graphene, short texture, nanometer sheet are apparent.
With reference to Fig. 2, using x-ray photoelectron spectroscopy(XPS)Illustrate the bonding state of doped chemical and carbon, it is quantitative to adulterate The content of element.Fig. 2 is the xps energy spectrum that the present embodiment prepares sample.Wherein,(a)For the full spectrograms of XPS of sample,(b)For C's XPS swarming collection of illustrative plates,(c)For the swarming collection of illustrative plates of the XPS of N,(d)For the XPS swarming collection of illustrative plates of S.The sample can be seen in full spectrogram (a) There are nitrogen and element sulphur in product other than carbon and oxygen element, illustrates that nitrogen element sulphur has successfully been doped into graphene In.
With reference to Fig. 3, Fig. 3 is the stable circulation linearity curve that the present embodiment prepares sample.By sample assembly at CR2032 type lithiums Ion battery carries out charge-discharge test, is 100mAh g in current density-1The test loop stability that Shi Xunhuan 100 is enclosed., can Be clearly seen that sample cycle 100 circle after capacity still close to 600mAh g-1, and it is with good stability.
Embodiment 3
(1)Hydro-thermal reaction prepares precursor:100mg graphene oxides are scattered in 20ml deionized waters first, are aoxidized Graphene dispersing solution, is then added 0.252g melamines, and 120 DEG C of stirrings obtain A liquid to being completely dissolved;Separately take 0.354 trimerization Thiocyanic acid is dissolved in 25ml ethyl alcohol, after obtain B liquid;B liquid is slowly added in A liquid, water heating kettle is packed into after 120 DEG C of stirring 10min In, packing ratio 55%, 150 DEG C/36h of hydro-thermal reaction.After the completion of hydro-thermal reaction, freeze-drying obtains presoma.
(2)Heat treatment prepares three-dimensional doped graphene:Presoma is placed in tube furnace, pass to argon gas protection, with 10 DEG C/ The heating rate of min is warming up to 1000 DEG C of heat preservation 1h.
Embodiment 4
(1)Hydro-thermal reaction prepares precursor:100mg graphene oxides are scattered in 15ml deionized waters first, are aoxidized Graphene dispersing solution, is then added 0.03g melamines, and 80 DEG C of stirrings obtain A liquid to being completely dissolved;Separately take tri- polysulfides of 0.09g Cyanic acid is dissolved in 25ml ethyl alcohol, after obtain B liquid;B liquid is slowly added in A liquid, is fitted into water heating kettle after 80 DEG C of stirring 20min, Packing ratio is 40%, 180 DEG C of hydro-thermal reaction/for 24 hours.After the completion of hydro-thermal reaction, vacuum drying obtains presoma.
(2)Heat treatment prepares three-dimensional doped graphene:Presoma is placed in tube furnace, pass to argon gas protection, with 5 DEG C/ The heating rate of min is warming up to 700 DEG C of heat preservation 3h.
Embodiment 5
(1)Hydro-thermal reaction prepares precursor:100mg graphene oxides are scattered in 20ml deionized waters first, are aoxidized Graphene dispersing solution, is then added 0.126 melamine, and 80 DEG C of stirrings obtain A liquid to being completely dissolved;Separately take 0.177 3 polysulfides Cyanic acid is dissolved in 25ml ethyl alcohol, after obtain B liquid;B liquid is slowly added in A liquid, is fitted into water heating kettle after 70 DEG C of stirring 60min, Packing ratio is 45%, 200 DEG C/4h of hydro-thermal reaction.After the completion of hydro-thermal reaction, freeze-drying obtains presoma.
(2)Heat treatment prepares three-dimensional doped graphene:Presoma is placed in tube furnace, pass to argon gas protection, with 2 DEG C/ The heating rate of min is warming up to 900 DEG C of heat preservation 2h.
Embodiment 6
(1)Hydro-thermal reaction prepares precursor:100mg graphene oxides are scattered in 25ml deionized waters first, are aoxidized Graphene dispersing solution, is then added 0.25g melamines, and 80 DEG C of stirrings obtain A liquid to being completely dissolved;Separately take tri- polysulfides of 0.35g Cyanic acid is dissolved in 25ml ethyl alcohol, after obtain B liquid;B liquid is slowly added in A liquid, is fitted into water heating kettle after 120 DEG C of stirring 60min, Packing ratio is 50%, 200 DEG C/36h of hydro-thermal reaction.After the completion of hydro-thermal reaction, freeze-drying obtains presoma.
(2)Heat treatment prepares three-dimensional doped graphene:Presoma is placed in tube furnace, pass to argon gas protection, with 10 DEG C/ The heating rate of min is warming up to 1000 DEG C of heat preservation 5h.

Claims (10)

1. a kind of preparation method of nitrogen sulphur codope three-dimensional grapheme, which is characterized in that include the following steps:
1)Hydro-thermal reaction prepares precursor:Graphene oxide is scattered in enough deionized waters, obtains graphene oxide point Dispersion liquid, the ethanol solution that melamine powder then is added, trithiocyanuric acid is added, hydro-thermal reaction is carried out after stirring evenly;It will Hydrothermal product is dried, and presoma is obtained;
2)Heat treatment prepares three-dimensional doped graphene:By step 1)The presoma of preparation under protection of argon gas, in 600 ~ 1000 DEG C It is heat-treated.
2. a kind of preparation method of nitrogen sulphur codope three-dimensional grapheme according to claim 1, it is characterised in that:The oxygen Graphite alkene, melamine, trithiocyanuric acid mass ratio be 1:0.3~2.5:0.4~3.5.
3. a kind of preparation method of nitrogen sulphur codope three-dimensional grapheme according to claim 1, it is characterised in that:The oxygen It is 4mg/ml ~ 10mg/ml that graphite alkene, which is scattered in the dispersion liquid concentration obtained in deionized water,.
4. a kind of preparation method of nitrogen sulphur codope three-dimensional grapheme according to claim 1, it is characterised in that:It is described to go The volume ratio of ionized water and ethanol consumption is 1:1~2.5.
5. a kind of preparation method of nitrogen sulphur codope three-dimensional grapheme according to claim 1, it is characterised in that:The step Rapid 1)Whipping temp be 70 ~ 120 DEG C, mixing time be 10 ~ 60 min.
6. a kind of preparation method of nitrogen sulphur codope three-dimensional grapheme according to claim 1, it is characterised in that:The water The reaction temperature of thermal response is 120 ~ 200 DEG C, and the reaction time is 4 ~ 36 h.
7. a kind of preparation method of nitrogen sulphur codope three-dimensional grapheme according to claim 1, it is characterised in that:The water The packing ratio of thermal response is the % of 35 % ~ 50.
8. a kind of preparation method of nitrogen sulphur codope three-dimensional grapheme according to claim 1, it is characterised in that:The step Rapid 2)In heat treatment, heat treatment temperature be 600 ~ 1000 DEG C, heat treatment time be 1 ~ 5h.
9. the nitrogen sulphur codope three-dimensional grapheme prepared by any one of claim 1 ~ 8 method.
10. application of the nitrogen sulphur codope three-dimensional grapheme as electrode material described in claim 9.
CN201810212106.6A 2018-03-15 2018-03-15 A kind of application of the preparation method of nitrogen sulphur codope three-dimensional grapheme, its product and the product that prepare Pending CN108470890A (en)

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CN109244368A (en) * 2018-11-19 2019-01-18 北京师范大学 A kind of application of nitrogen-doped graphene in negative electrode of lithium ion battery preparation
CN109485031A (en) * 2018-11-19 2019-03-19 北京师范大学 A kind of nitrogen-doped graphene and preparation method thereof
CN109585185A (en) * 2018-11-16 2019-04-05 郑州轻工业学院 The confinement the preparation method and its stored energy application of a kind of nitrogen, sulphur codope graphene film
CN109659546A (en) * 2018-12-26 2019-04-19 成都爱敏特新能源技术有限公司 A kind of sulphur/nitrogen/silicon coblended composite cathode material of silicon/carbon/graphite and preparation method thereof
CN109911889A (en) * 2019-04-19 2019-06-21 陕西科技大学 A kind of nitrogen sulphur codope porous graphene and its preparation method and application
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CN108137324A (en) * 2016-06-08 2018-06-08 株式会社Lg化学 The self-assembled compound material of carbonitride and graphene oxide, its manufacturing method, using its anode and include its lithium-sulfur cell
CN108137324B (en) * 2016-06-08 2021-02-02 株式会社Lg化学 Self-assembled composite material of carbon nitride and graphene oxide, method for manufacturing same, positive electrode using same, and lithium-sulfur battery comprising same
CN109585185A (en) * 2018-11-16 2019-04-05 郑州轻工业学院 The confinement the preparation method and its stored energy application of a kind of nitrogen, sulphur codope graphene film
CN109244368A (en) * 2018-11-19 2019-01-18 北京师范大学 A kind of application of nitrogen-doped graphene in negative electrode of lithium ion battery preparation
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CN109659546B (en) * 2018-12-26 2021-11-23 成都爱敏特新能源技术有限公司 Sulfur/nitrogen/silicon co-doped graphite composite negative electrode material and preparation method thereof
CN109911889A (en) * 2019-04-19 2019-06-21 陕西科技大学 A kind of nitrogen sulphur codope porous graphene and its preparation method and application
CN110040719A (en) * 2019-04-19 2019-07-23 陕西科技大学 A kind of carbon nanotube and its preparation method and application grown on doped graphene matrix
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CN109980210B (en) * 2019-04-19 2021-01-29 陕西科技大学 Niobium pentoxide three-dimensional doped graphene composite material and preparation method and application thereof
CN109980210A (en) * 2019-04-19 2019-07-05 陕西科技大学 A kind of niobium pentaoxide three-dimensional doped graphene composite material and preparation method and application
CN109950512A (en) * 2019-04-19 2019-06-28 陕西科技大学 A kind of nitrogen sulphur codope three-dimensional grapheme and transient metal sulfide composite material and its universality preparation method and application
CN110061252A (en) * 2019-05-08 2019-07-26 安康学院 A kind of fuel battery negative pole oxygen reduction catalyst nitrogen sulphur codope graphene/carbon point composite material and preparation method and application
CN110775959A (en) * 2019-10-31 2020-02-11 西北工业大学 Preparation method for preparing nitrogen-sulfur co-doped porous graphene by supramolecular template method
CN111403711A (en) * 2020-03-26 2020-07-10 内蒙古杉杉科技有限公司 Sulfur-nitrogen co-doped graphene loaded nano-silicon three-dimensional electrode material and preparation method thereof
CN111403711B (en) * 2020-03-26 2023-03-14 内蒙古杉杉科技有限公司 Sulfur-nitrogen co-doped graphene loaded nano-silicon three-dimensional electrode material and preparation method thereof
CN112993225A (en) * 2021-02-06 2021-06-18 长沙理工大学 Antimony-based composite electrode material and preparation method and application thereof
CN112993225B (en) * 2021-02-06 2022-03-08 长沙理工大学 Antimony-based composite electrode material and preparation method and application thereof

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