CN106299261A - Lithium sulfide/carbon composite nano-material and preparation method and application - Google Patents
Lithium sulfide/carbon composite nano-material and preparation method and application Download PDFInfo
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- CN106299261A CN106299261A CN201510289610.2A CN201510289610A CN106299261A CN 106299261 A CN106299261 A CN 106299261A CN 201510289610 A CN201510289610 A CN 201510289610A CN 106299261 A CN106299261 A CN 106299261A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/581—Chalcogenides or intercalation compounds thereof
- H01M4/5815—Sulfides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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 kind of lithium sulfide/carbon composite nano-material, its preparation method and application.Among a more typical case study on implementation, the method includes: carry out heat treatment after being sufficiently mixed with material with carbon element presoma or material with carbon element by lithium sulfate, heat treatment condition includes: heating rate is 1～20 DEG C/min, in an inert atmosphere in 600～1000 DEG C of constant temperature 2～12h, naturally cool to room temperature afterwards, it is thus achieved that described sulfuration lithium/carbon composite material.The invention provides and a kind of utilize carbon reduction lithium sulfate and the technique that synthesizes lithium sulfide/carbon nano-composite material, this technique is simple to operation, controllability is high, cheaper starting materials is easy to get, with low cost, and obtained product be uniformly dispersed, functional, the lithium sulfide/carbon nano-composite material of morphology controllable, including one-dimensional nanofiber, two-dimensional nano sheet etc., and these lithium sulfides/carbon nano-composite material good conductivity, at electrochemical energy storage device, the equipment such as such as lithium-sulfur cell extensively can be applied.
Description
Technical field
A kind of lithium sulfide/carbon composite nano-material that present invention relates particularly to material science and preparation method and application.
Background technology
Lithium sulfide is due to its high theoretical specific capacity (1166mAh/g), increasingly by academia, industrial circle and national governments
Greatly pay close attention to.But due to lithium sulfide poorly conductive, after being assembled into battery, utilization rate is low, so that in its coated with uniform one
Layer material with carbon element forms sulfuration lithium/carbon composite material, thus improves its electrochemical energy storage performance.Current sulfuration lithium/carbon composite material
Preparation method focuses primarily upon liquid phase coating method, solid-phase ball milling method, but most synthetic system directly uses lithium sulfide to be former
Material, or utilize metal lithium salts to form lithium sulfide with reaction of Salmon-Saxl.Although such method is simple, but relatively costly, and operates bar
Part is harsh.How using simple raw material fabricated in situ sulfuration lithium/carbon composite material is material scholar's problem demanding prompt solution.Outstanding
In rice buckle and by heating lithium-containing compound and sulfur, under the temperature conditions of 600 DEG C～1500 DEG C, prepare pure phase lithium sulfide
(CN102177090A).The Archer research group of Cornell Univ USA uses high temperature solid-state method pyrolysis lithium sulfate and isophthalic two
Phenol and yuban, prepare spherical sulfuration lithium/carbon composite material (Journal of Materials Chemistry A, 2013,
1,1433-1440), this process costs is low, but process is more complicated.
Sum it up, prior art is also difficult to the controlled preparation of lithium sulfide/carbon nano-composite material pattern, and generally exist
The defects such as cost is higher, and operating condition is harsh.
Summary of the invention
Present invention is primarily targeted at a kind of novel lithium sulfide/carbon composite nano-material preparation technology of offer, it has technique
Simply, the feature such as with low cost, moreover it is possible to realize the controlled preparation of lithium sulfide/carbon nano-composite material pattern, thus overcome existing
Deficiency in technology.
Another object of the present invention is to provide lithium sulfide/carbon composite nano-material of being prepared by aforementioned preparation technology, it has point
Dissipate the advantages such as uniform, functional, morphology controllable.
For realizing aforementioned invention purpose, the technical solution used in the present invention includes:
One embodiment of the present invention provides a kind of lithium sulfide/carbon composite nano-material preparation method, it is characterised in that including:
Carrying out heat treatment after being sufficiently mixed with material with carbon element presoma or material with carbon element by lithium sulfate, the condition of described heat treatment includes: heat up speed
Rate is 1～20 DEG C/min, in an inert atmosphere in 600～1000 DEG C of constant temperature 2～12h, naturally cools to room temperature afterwards, it is thus achieved that institute
State sulfuration lithium/carbon composite material.
Among one more specific embodiment, described preparation method includes:
Lithium sulfate is dissolved in the mixed solvent of water and organic solvent composition, adds material with carbon element presoma, be sufficiently mixed uniform shape
The most transparent spinning liquid, then carry out spinning process, form lithium sulfate/material with carbon element presoma composite fibre；
Described lithium sulfate/material with carbon element presoma composite fibre is carried out heat treatment, and heating rate is 1～10 DEG C/min, at air gas
In 250～350 DEG C of constant temperature 2～4h in atmosphere, naturally cool to room temperature afterwards, the most again carry out heat treatment, heating rate be 1～
10 DEG C/min, in an inert atmosphere in 600～1000 DEG C of constant temperature 2～12h, then naturally cool to room temperature, it is thus achieved that lithium sulfide/carbon
Nano-fiber material.
Among a preferred embodiment, described spinning liquid comprises 5～20wt%Li2SO4·H2Before O and 5～40wt% material with carbon element
Drive body.
Among a preferred embodiment, described spinning liquid comprises 0～30wt% organic solvent and 40～70wt% deionized waters.
Wherein, described organic solvent includes DMF (dimethylformamide), but is not limited to this.
Wherein, described material with carbon element presoma is selected from but is not limited to macromolecular material, for instance, it may be preferable to for weight average molecular weight be
The polyvinylpyrrolidone of 30000～1300000.
Among a preferred embodiment, described preparation method includes: use electrostatic spinning technique to process spinning liquid and shape
Becoming lithium sulfate/material with carbon element presoma composite fibre, the nozzle diameter that spinning uses in processing is 0.3～1.4mm, nozzle and level
The angle in face is 10～70 °, applies the DC voltage of 7～30kV, and solidification distance is 10～40cm, and temperature is 0～35 DEG C, phase
It is 10～70% to humidity.
Among one more specific embodiment, described preparation method includes: by Li2SO4With material with carbon element ball milling 1～24h, shape
Becoming the composite of lithium sulfate and carbon, carry out heat treatment afterwards, heating rate is 1～20 DEG C/min, in an inert atmosphere in
600～1000 DEG C of constant temperature 2～12h, naturally cool to room temperature afterwards, it is thus achieved that lithium sulfide/carbon compound sheet nano material.
Among a preferred embodiment, described lithium sulfate comprises 1～50wt%Li with the composite of carbon2SO4With 50～99
Wt% material with carbon element.
Wherein, described material with carbon element includes the combination of any one or more in acetylene black, graphite, activated carbon, Graphene,
But it is not limited to this.
Further, aforementioned inert atmosphere is preferably argon gas atmosphere, but is not limited to this.
Lithium sulfide/the carbon composite nano-material prepared by preceding method, described sulfur is additionally provided among one embodiment of the present invention
Changing lithium/carbon composite nano-material is lithium sulfide/carbon nano-fiber materials.
Lithium sulfide/the carbon composite nano-material prepared by preceding method, described sulfur is additionally provided among one embodiment of the present invention
Changing lithium/carbon composite nano-material is lithium sulfide/carbon compound sheet nano material.
The purposes of described lithium sulfide/carbon composite nano-material is additionally provided, such as in electrochemistry among one embodiment of the present invention
Energy storage device, the application in equipment such as including lithium-sulfur cell.
Such as, in one embodiment, it is provided that a kind of lithium-sulfur cell, its positive pole comprises described lithium sulfide/carbon composite nano material
Material.
Compared with prior art, the invention have the advantages that providing one utilizes carbon reduction lithium sulfate to synthesize lithium sulfide/carbon
The technique of nano composite material, this technique is simple to operation, and controllability is high, and cheaper starting materials is easy to get, with low cost, and is obtained
Product be uniformly dispersed, functional, the lithium sulfide/carbon nano-composite material of morphology controllable, including one-dimensional nanofiber,
Two-dimensional nano sheets etc., and these lithium sulfides/carbon nano-composite material good conductivity, can be at electrochemical energy storage device, such as lithium sulfur
The equipment such as battery are extensively applied.
Accompanying drawing explanation
Fig. 1 is the SEM figure of the obtained lithium sulfide of embodiment 2/carbon nano-fiber positive electrode；
Fig. 2 is the XRD figure of the obtained lithium sulfide of embodiment 2/carbon nano-fiber positive electrode；
Fig. 3 is the obtained lithium sulfide of embodiment 2/carbon nano-fiber battery performance test figure；
Fig. 4 is the SEM figure of the obtained lithium sulfide/carbon nanosheet of embodiment 5；
Fig. 5 is the XRD figure of the obtained lithium sulfide of embodiment 5/carbon nanosheet positive electrode；
Fig. 6 is the battery performance test figure of the obtained lithium sulfide/carbon nanosheet of embodiment 5.
Detailed description of the invention
As it was previously stated, in view of prior art can not realize the controlled preparation of lithium sulfide/carbon nano-composite material pattern, the most also deposit
Higher at preparation cost, the defects such as operating condition is harsh, inventor, through studying for a long period of time and putting into practice in a large number, is proposed this
Invention technical scheme, its be mainly one utilize carbon reduction lithium sulfate and simply synthesize morphology controllable, good dispersion, electric conductivity
The technique of lithium sulfide/carbon nano-composite material that can be excellent.
Among a more typical specific embodiments of the present invention, it is provided that the system of a kind of lithium sulfide/carbon nano-fiber materials
Standby technique, including: by Li2SO4·H2O (5～20wt%, shared mass fraction in the spinning liquid ultimately formed, lower same)
It is dissolved in the mixed solvent of DMF (dimethylformamide, 0～30wt%) and deionized water (40～70wt%), adds macromolecule
PVP (polyvinylpyrrolidone, Mw=30000～1300000,5～40wt%), under magnetic agitation (50～
2000rpm) stir 4～48 h, form the solution of homogeneous transparent, i.e. spinning liquid.The spinning liquid prepared is added spinning dress
In the liquid storage pipe put, carry out electrostatic spinning, nozzle diameter 0.3～1.4mm, adjust the angle of nozzle and horizontal plane be 10～
70 °, apply 7～30kV DC voltage, solidify distance 10～40cm, temperature 0～35 DEG C, relative humidity be 10%～
70%, obtain Li2SO4/ PVP composite nano fiber.By described Li2SO4It is box that/PVP composite nano fiber is put into temperature programmed control
Carrying out heat treatment in stove, heating rate is 1-10 DEG C/min, in air atmosphere 350 DEG C of constant temperature 4h, the coldest with body of heater afterwards
But to room temperature, with will being put in temperature programmed control tube furnace and carry out heat treatment by sample, heating rate is 1-10 DEG C/min, at argon
Atmosphere lower 900 DEG C of constant temperature 3h, gas flow rate 10-1000sccm, naturally cool to room temperature with body of heater afterwards, obtain lithium sulfide/carbon
Nano-fiber material.This lithium sulfide/carbon nano-fiber materials can be as the positive electrode of lithium-sulfur cell.
Among another more typical specific embodiments of the present invention, it is provided that a kind of lithium sulfide/carbon compound sheet nanometer material
The preparation technology of material, including: by Li2SO4(1～40wt%, shared in the lithium sulfate the ultimately formed composite with carbon
Mass fraction, lower same) mix with material with carbon element (acetylene black, graphite, activated carbon, Graphene etc. the most, 60～99wt%),
Ball milling 1～24h, obtains the composite of lithium sulfate and carbon, is put in temperature programmed control batch-type furnace by this composite and carries out at heat
Reason, heating rate is 1～20 DEG C/min, under an argon atmosphere 600～1000 DEG C of constant temperature 2～12h.Afterwards with body of heater natural cooling
To room temperature, obtain lithium sulfide/carbon composite sheet material.
Below in conjunction with the technical solution of the present invention is further explained the explanation of some embodiments and respective drawings.Implement following
In example, agents useful for same is both preferably analytical pure.
Embodiment 1: by Li2SO4·H2O (20wt%, shared mass fraction in the spinning liquid ultimately formed, lower same) be dissolved in
In the mixed solvent of DMF (0wt%) and deionized water (60wt%), add PVP (Mw=1300000,20wt%), magnetic
Under power stirring, (100rpm) stirring 24h, forms the solution (i.e. spinning liquid) of homogeneous transparent.The spinning liquid prepared is added
In the liquid storage pipe of device for spinning, carrying out electrostatic spinning, nozzle diameter 0.5mm, the angle adjusting nozzle and horizontal plane is 70 °,
Applying the DC voltage of 13kV, solidify distance 15cm, temperature 25 DEG C, relative humidity is 30%, obtains Li2SO4/ PVP is combined
Nanofiber.By described Li2SO4/ PVP composite nano fiber is put in temperature programmed control batch-type furnace and carries out heat treatment, heating rate
Being 2 DEG C/min, 350 DEG C of constant temperature 4h, naturally cool to room temperature with body of heater afterwards in air atmosphere, with being put into program by sample
Carrying out heat treatment in temperature control tube furnace, heating rate is 5 DEG C/min, under an argon atmosphere 900 DEG C of constant temperature 3h, and gas flow rate is 50
Sccm, naturally cools to room temperature with body of heater afterwards, obtains lithium sulfide/carbon nano-fiber positive electrode.
Embodiment 2: by Li2SO4·H2O (10wt%, shared mass fraction in the spinning liquid ultimately formed, lower same) be dissolved in
In the mixed solvent of DMF (30wt%) and deionized water (50wt%), add PVP (Mw=1300000,10wt%), magnetic
Under power stirring, (2000rpm) stirring 4h, forms the solution (i.e. spinning liquid) of homogeneous transparent.The spinning liquid prepared is added
In the liquid storage pipe of device for spinning, carrying out electrostatic spinning, nozzle diameter 0.3mm, the angle adjusting nozzle and horizontal plane is 10 °,
Applying the DC voltage of 7kV, solidify distance 40cm, temperature 35 DEG C, relative humidity is 10%, obtains Li2SO4/ PVP is combined
Nanofiber.By described Li2SO4/ PVP composite nano fiber is put in temperature programmed control batch-type furnace and carries out heat treatment, heating rate
Being 5 DEG C/min, 350 DEG C of constant temperature 4h, naturally cool to room temperature with body of heater afterwards in air atmosphere, with being put into program by sample
Carrying out heat treatment in temperature control tube furnace, heating rate is 10 DEG C/min, under an argon atmosphere 900 DEG C of constant temperature 3h, afterwards with body of heater
Naturally cool to room temperature, gas flow rate 1000sccm, obtain lithium sulfide/carbon nano-fiber positive electrode.
Embodiment 3: by Li2SO4·H2O (5wt%, shared mass fraction in the spinning liquid ultimately formed, lower same) be dissolved in
In the mixed solvent of DMF (20wt%) and deionized water (45wt%), add PVP (Mw=1300000,30wt%), magnetic
Under power stirring, (500rpm) stirring 24h, forms the solution (i.e. spinning liquid) of homogeneous transparent, is added by the spinning liquid prepared
In the liquid storage pipe of device for spinning, carrying out electrostatic spinning, nozzle diameter 0.9mm, the angle adjusting nozzle and horizontal plane is 20 °,
Applying the DC voltage of 20kV, solidify distance 20cm, temperature 0 DEG C, relative humidity is 60%, obtains Li2SO4/ PVP is combined
Nanofiber.By described Li2SO4/ PVP composite nano fiber is put in temperature programmed control batch-type furnace and carries out heat treatment, heating rate
Being 10 DEG C/min, 350 DEG C of constant temperature 4h, naturally cool to room temperature with body of heater afterwards in air atmosphere, with being put into journey by sample
Carrying out heat treatment in sequence temperature control tube furnace, heating rate is 2 DEG C/min, under an argon atmosphere 900 DEG C of constant temperature 3h, afterwards with body of heater
Naturally cool to room temperature, gas flow rate 500sccm, obtain lithium sulfide/carbon nano-fiber positive electrode.
Embodiment 4: by Li2SO4(5wt%, shared mass fraction in the lithium sulfate the ultimately formed composite with carbon, under
With) mix with material with carbon element (acetylene black, 95wt%).Ball milling 2h, obtains the composite of lithium sulfate and carbon, by this composite wood
Material is put in temperature programmed control batch-type furnace and carries out heat treatment, and heating rate is 5 DEG C/min, under an argon atmosphere 600 DEG C of constant temperature 3h.It
After naturally cool to room temperature with body of heater, obtain lithium sulfide/carbon compound sheet nano material.
Embodiment 5: by Li2SO4(15wt%, shared mass fraction in the lithium sulfate the ultimately formed composite with carbon,
Lower same) mix with material with carbon element (graphite, 85wt%).Ball milling 10h, obtains the composite of lithium sulfate and carbon, this is combined
Material is put in temperature programmed control batch-type furnace and carries out heat treatment, and heating rate is 10 DEG C/min, under an argon atmosphere 800 DEG C of constant temperature 8
h.Naturally cool to room temperature with body of heater afterwards, obtain lithium sulfide/carbon compound sheet nano material.
Embodiment 6: by Li2SO4(35wt%, shared mass fraction in the lithium sulfate the ultimately formed composite with carbon,
Lower same) mix with material with carbon element (Graphene, 65wt%).Ball milling 20h, obtains the composite of lithium sulfate and carbon, and this is multiple
Condensation material is put in temperature programmed control batch-type furnace and carries out heat treatment, and heating rate is 20 DEG C/min, under an argon atmosphere 1000 DEG C of constant temperature
12h.Naturally cool to room temperature with body of heater afterwards, obtain lithium sulfide/carbon compound sheet nano material.
It should be noted that above-described embodiment is only technology design and the feature of the explanation present invention, it is intended to allow is familiar with technique
Personage will appreciate that present invention and implement according to this, can not limit the scope of the invention with this.All according to the present invention
The equivalence that spirit is made changes or modifies, and all should contain within protection scope of the present invention.
Claims (10)
1. lithium sulfide/carbon composite nano-material preparation method, it is characterised in that including: by lithium sulfate and material with carbon element presoma
Or material with carbon element be sufficiently mixed after carry out heat treatment, heat treatment condition includes: heating rate is 1～20 DEG C/min, at inert atmosphere
In in 600～1000 DEG C of constant temperature 2～12h, naturally cool to room temperature afterwards, it is thus achieved that described sulfuration lithium/carbon composite material.
Lithium sulfide the most according to claim 1/carbon composite nano-material preparation method, it is characterised in that including:
Lithium sulfate is dissolved in the mixed solvent of water and organic solvent composition, adds material with carbon element presoma, be sufficiently mixed uniform shape
The most transparent spinning liquid, then carry out spinning process, form lithium sulfate/material with carbon element presoma composite fibre；
Described lithium sulfate/material with carbon element presoma composite fibre is carried out heat treatment, and heating rate is 1～10 DEG C/min, at air gas
In 250～350 DEG C of constant temperature 2～4h in atmosphere, naturally cool to room temperature afterwards, the most again carry out heat treatment, heating rate be 1～
10 DEG C/min, in an inert atmosphere in 600～1000 DEG C of constant temperature 2～12h, then naturally cool to room temperature, it is thus achieved that lithium sulfide/carbon
Nano-fiber material.
Lithium sulfide the most according to claim 2/carbon composite nano-material preparation method, it is characterised in that described spinning liquid comprises
5～20wt%Li2SO4·H2O and 5～40wt% material with carbon element presoma.
Lithium sulfide the most according to claim 2/carbon composite nano-material preparation method, it is characterised in that described spinning liquid comprises
0～30wt% organic solvent and 40～70wt% deionized waters, wherein said organic solvent includes dimethylformamide.
5. according to the lithium sulfide according to any one of claim 1-4/carbon composite nano-material preparation method, it is characterised in that described
Material with carbon element presoma includes that macromolecular material, described macromolecular material include the polyethylene that weight average molecular weight is 30000～1300000
Ketopyrrolidine.
6. according to the lithium sulfide according to any one of claim 2-4/carbon composite nano-material preparation method, it is characterised in that bag
Include: using electrostatic spinning technique to process spinning liquid and form lithium sulfate/material with carbon element presoma composite fibre, spinning processes
The nozzle diameter of middle employing is 0.3～1.4mm, and nozzle is 10～70 ° with the angle of horizontal plane, applies the unidirectional current of 7～30kV
Pressure, solidification distance is 10～40cm, and temperature is 0～35 DEG C, and relative humidity is 10～70%.
Lithium sulfide the most according to claim 1/carbon composite nano-material preparation method, it is characterised in that including: by Li2SO4
With material with carbon element ball milling 1～24h, form the composite of lithium sulfate and carbon, carry out heat treatment afterwards, heating rate be 1～
20 DEG C/min, in an inert atmosphere in 600～1000 DEG C of constant temperature 2～12h, naturally cool to room temperature afterwards, it is thus achieved that lithium sulfide/carbon
Compound sheet nano material.
Lithium sulfide the most according to claim 7/carbon composite nano-material preparation method, it is characterised in that described lithium sulfate and carbon
Composite comprise 1～50wt%Li2SO4With 50～99wt% material with carbon elements, described material with carbon element includes acetylene black, graphite, work
The combination of any one or more in property charcoal, Graphene.
9. lithium sulfide/the carbon composite nano-material prepared by method according to any one of claim 1-8, described lithium sulfide/carbon is combined
Nano material is lithium sulfide/carbon nano-fiber materials or lithium sulfide/carbon compound sheet nano material.
10. an electrochemical energy storage device, it is characterised in that comprise the lithium sulfide/carbon composite nano-material described in claim 9.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229487A (en) * | 2016-08-25 | 2016-12-14 | 北京化工大学 | The method of lithium-sulfur cell charcoal/lithium sulfide composite positive pole prepared by a kind of carbon thermal reduction lithium sulfate |
| CN107275571A (en) * | 2017-08-18 | 2017-10-20 | 华南师范大学 | A kind of full battery of lithium sulfide/nano-silicone wire/carbon and preparation method and application |
| CN108987713A (en) * | 2018-07-20 | 2018-12-11 | 广东工业大学 | A kind of preparation method of carbon/lithium sulfide composite material |
| CN109248712A (en) * | 2017-07-14 | 2019-01-22 | 中国科学院苏州纳米技术与纳米仿生研究所 | Monatomic dopen Nano carbon material catalytic carrier of metal and its preparation method and application |
| CN109360953A (en) * | 2018-09-28 | 2019-02-19 | 天津大学 | A kind of method synthesizing vulcanization lithium/carbon composite material and the lithium-sulfur cell using the material |
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| CN110212180A (en) * | 2019-05-22 | 2019-09-06 | 杭州电子科技大学 | A kind of preparation method and lithium-sulfur cell of lithium sulfide self-supporting carbon ball/carbon nano-fiber composite material |
| CN110931687A (en) * | 2019-12-10 | 2020-03-27 | 肇庆市华师大光电产业研究院 | Preparation method of lithium-sulfur battery functional interlayer with sheet structure |
| CN111313018A (en) * | 2019-12-06 | 2020-06-19 | 中国科学院苏州纳米技术与纳米仿生研究所 | Nano carbon/lithium sulfide composite material and preparation method and application thereof |
| CN111628166A (en) * | 2020-06-04 | 2020-09-04 | 合肥工业大学 | Three-dimensional lithium sulfide electrode for lithium-sulfur battery and preparation method thereof |
| CN113428881A (en) * | 2021-07-09 | 2021-09-24 | 浙江理工大学 | Preparation of Li2SO4@ PEI nano-particles by anti-solvent precipitation method |
| CN113991073A (en) * | 2021-09-27 | 2022-01-28 | 杭州电子科技大学 | Preparation method of lithium sulfide electrode material |
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| CN111628166A (en) * | 2020-06-04 | 2020-09-04 | 合肥工业大学 | Three-dimensional lithium sulfide electrode for lithium-sulfur battery and preparation method thereof |
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