CN107994251B - A kind of double charcoal cloth flexible lithium sulphur batteries and preparation method thereof - Google Patents
A kind of double charcoal cloth flexible lithium sulphur batteries and preparation method thereof Download PDFInfo
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- CN107994251B CN107994251B CN201711311738.XA CN201711311738A CN107994251B CN 107994251 B CN107994251 B CN 107994251B CN 201711311738 A CN201711311738 A CN 201711311738A CN 107994251 B CN107994251 B CN 107994251B
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
A kind of double charcoal cloth flexible lithium sulphur batteries and preparation method thereof, belong to lithium-sulfur cell preparation technical field.The flexible anode of the lithium-sulfur cell, flexible cathode, PP diaphragm, electrolyte, aluminum plastic film are constituted；In preparation process, positive electrode and negative electrode use the flexible charcoal cloth of commercialization as carrier.Using charcoal cloth as positive carrier, it can effectively solve the problems, such as that the conductivity problems of elemental sulfur occur electrode active material with the electrode for avoiding traditional cladding process preparation after bending and fall off.And using charcoal cloth as cathode carrier, on the one hand effectively improve the flexibility of lithium anode；Simultaneously on the other hand, charcoal cloth as three-dimensional conducting matrix grain can effective scattered current and make lithium metal that can uniformly dissolve and deposit and the growth of dendrite inhibition in charge and discharge process, thus conducive to the life-span upgrading of battery.The present invention prepares CC@Co/CNTs material for the first time, compared to charcoal cloth raw material, has higher specific surface area and electric conductivity.
Description
Technical field
The invention belongs to lithium-sulfur cell preparation technical fields, and in particular to a kind of double charcoal cloth flexible lithium sulphur batteries and its preparation
Method.
Background technique
With the development of portable electronic product, requirement of the people to flexible battery is more and more urgent.As electronic product
One of the most key component, the energy density and reliability of flexible battery directly decide the performance of portable electronic product.
At this stage in commercialized battery system, lithium ion battery is the higher energy storage device of energy density, although having at present by lithium
The research of ion battery flexibility, but the positive and negative pole material of lithium ion battery is mainly based upon insertion and reacts with deintercalation, mass ratio
Energy is lower, is unfavorable for the lightening of mancarried electronic aid.And lithium-sulphur cell positive electrode is that (theoretical specific capacity is up to 1675 to elemental sulfur
MAh/g), cathode is lithium metal, and positive and negative anodes active material is the substance that density is small, capacity is big, therefore the theoretical energy of lithium-sulfur cell
Metric density is up to 2600 Wh/kg.Therefore by lithium-sulfur cell flexibility, the weight of portable electronic product can be effectively reduced,
To mitigate the weight bearing of people, improve efficiency.
Current flexible lithium sulphur battery still has some problems, first is that positive active material-elemental sulfur is insulator, it can not
Directly as electrode；Second is that lithium-sulfur cell intermediate product can be dissolved in electrolyte, and further causes " shuttle effect " and make
It is low poor with cycle life at the charge efficiency of battery；Third is that electrode prepared by traditional cladding process may be more in flexible battery experience
Falling off for electrode active material occurs after secondary bending and performance degradation is caused even to fail.
Summary of the invention
The purpose of the present invention is to solve elemental sulfur is non-conductive and the problem of traditional cladding process is difficult to realize flexible electrode,
A kind of double charcoal cloth flexible lithium sulphur batteries and preparation method thereof are provided, in preparation process, positive electrode and negative electrode are flexible using commercialization
Charcoal cloth is as carrier.Using charcoal cloth as positive carrier, it can effectively solve the conductivity problems of elemental sulfur and avoid traditional painting
The problem of electrode active material falls off occurs after bending for the electrode for covering method preparation.And using charcoal cloth as cathode carrier, one
Aspect effectively improves the flexibility of lithium anode；Simultaneously on the other hand, charcoal cloth can be effective as three-dimensional conducting matrix grain
Scattered current and make lithium metal that can uniformly dissolve and deposit and the growth of dendrite inhibition in charge and discharge process, thus
Conducive to the promotion of battery life.
To achieve the above object, the technical solution adopted by the present invention is as follows:
A kind of double charcoal cloth flexible lithium sulphur batteries, it is characterised in that: the lithium-sulfur cell by flexible anode, flexible cathode,
PP diaphragm, electrolyte, aluminum plastic film are constituted；
The PP diaphragm is located between flexible anode and flexible cathode；The described flexibility anode and flexibility cathode and PP every
Electrolyte is full of between film；The flexibility anode and flexible cathode covering are equipped with aluminum plastic film.
A kind of preparation method of above-mentioned double charcoal cloth flexible lithium sulphur batteries, specific step is as follows for the method:
Step 1: the preparation of flexible anode:
(1) soluble cobalt and urea are dissolved in the water, wherein soluble cobalt concentration is 0.001 ~ 0.2 mmol/
L, urea concentration are 0.001 ~ 0.2 mmol/L, and 10 ~ 80 mL mixed solution obtained above is taken to be put into water heating kettle, and will grow ×
Width is that 1 ~ 4cm × 1 ~ 8cm charcoal step immerses in the mixed solution of water heating kettle, carries out hydro-thermal reaction, obtaining load has cobalt/cobalt oxide
The charcoal cloth of nano wire is named as CC@CoOx；The temperature of the hydro-thermal reaction is 50 ~ 150 DEG C, and the time is 2 ~ 48 h；
(2) 2-methylimidazole is dissolved in organic solvent, and by CC@CoO made from (1)xIt is put into wherein, makes 2- methyl
The concentration of imidazoles is 0.001 ~ 0.1 mol/L, solvent thermal reaction is carried out, so that cobalt/cobalt oxide nano wire is reacted with 2-methylimidazole
Metal-organic framework nano wire is generated, CC@ZIF-67 is obtained；The temperature of the solvent thermal reaction be 60 ~ 200 DEG C, the time be 2 ~
48 h；
(3) under protection gas and carbon source gaseous mixture, the CC@ZIF-67 that (2) obtain is pyrolyzed at high temperature, so that golden
Category-organic frame is carbonized and grows carbon nanotube, obtains CC@Co/CNTs；The temperature of the high temperature pyrolysis is 500 ~ 1500 DEG C,
Time is 0.5 ~ 12 h；
(4) more lithium sulfide solution of the surface@Co/CNTs CC one layer of 1 M of smearing obtained in (3) are as active material, i.e.,
Obtain flexible anode；
Step 2: the preparation of flexible cathode:
(1) in electrolytic cell, using charcoal cloth or CC@Co/CNTs as cathode, metal lithium sheet is anode, is electroplated, electric current
Density is 0.01 ~ 10 mA/cm2, electroplating time is 2 ~ 96 h；It, will be long equal with width or after melting 0.2 ~ 20g lithium metal
3 ~ 120s of infiltration in molten lithium is walked for the charcoal of 1 ~ 8cm, lithium source is drawn, is cooled to after room temperature and obtains flexible cathode；
Step 3: the preparation of flexible lithium sulphur battery:
PP diaphragm is added between the resulting flexible anode of step 1 and the resulting flexible cathode of step 2,20 L ~ 2 μ are added dropwise
ML electrolyte is packaged to get flexible lithium sulphur battery is arrived using aluminum plastic film.
The beneficial effect of the present invention compared with the existing technology is:
(1) processed commercialization charcoal cloth is used to obtain flexible lithium as lithium-sulphur cell positive electrode and cathode carrier simultaneously for the first time
Sulphur battery.
(2) CC@Co/CNTs material is prepared for the first time, while CC@Co/CNTs has higher ratio compared to charcoal cloth raw material
Surface area and electric conductivity, while cobalt/cobalt oxide therein has stronger adsorption capacity to more lithium sulfides, conducive to the cycle life of battery.
(3) through the invention in processing to charcoal cloth matrix, there are also preferable while the lithium-sulfur cell of preparation takes into account flexibility
Electrochemical stability.
Detailed description of the invention
Fig. 1 is flexible lithium sulphur battery structural schematic diagram of the invention；
Fig. 2 is the scanning electron microscope (SEM) photograph for being commercialized charcoal cloth；
Fig. 3 is the scanning electron microscope (SEM) photograph of CC@Co/CNTs prepared by embodiment 1；
Fig. 4 is the scanning electron microscope (SEM) photograph of CC/Li flexibility cathode prepared by embodiment 2；
Fig. 5 is CC@Co/CNTs flexible electrode first charge-discharge curve graph in 0.25C in embodiment 3.
Specific embodiment
Further description of the technical solution of the present invention with reference to the accompanying drawings and examples, and however, it is not limited to this,
All to be modified to technical solution of the present invention or equivalent replacement, range without departing from the spirit of the technical scheme of the invention should all
Cover within the protection scope of the present invention.
Specific embodiment 1: as shown in Figure 1, present embodiment record is a kind of double charcoal cloth flexible lithium sulphur batteries, institute
The lithium-sulfur cell stated is made of flexible anode, flexible cathode, PP diaphragm, electrolyte, aluminum plastic film；
The PP diaphragm is located between flexible anode and flexible cathode；The described flexibility anode and flexibility cathode and PP every
Electrolyte is full of between film；The flexibility anode and flexible cathode covering are equipped with aluminum plastic film.
Specific embodiment 2: a kind of preparation method of double charcoal cloth flexible lithium sulphur batteries described in specific embodiment one,
The carrier of the flexibility anode and flexible cathode is charcoal cloth, CC@CoOx, one of CC@ZIF-67 and CC@Co/CNTs
Or a variety of stack combinations.
Specific embodiment 3: a kind of preparation side of double charcoal cloth flexible lithium sulphur batteries described in specific embodiment one or two
Method, specific step is as follows for the method:
Step 1: the preparation of flexible anode:
(1) soluble cobalt and urea are dissolved in the water, wherein soluble cobalt concentration is 0.001 ~ 0.2 mmol/
L, urea concentration are 0.001 ~ 0.2 mmol/L, and 10 ~ 80 mL mixed solution obtained above is taken to be put into water heating kettle, and will grow ×
Width is that 1 ~ 4cm × 1 ~ 8cm charcoal step immerses in the mixed solution of water heating kettle, carries out hydro-thermal reaction, obtaining load has cobalt/cobalt oxide
The charcoal cloth of nano wire is named as CC@CoOx；The temperature of the hydro-thermal reaction is 50 ~ 150 DEG C, and the time is 2 ~ 48 h；
(2) 2-methylimidazole is dissolved in organic solvent, and by CC@CoO made from (1)xIt is put into wherein, makes 2- methyl
The concentration of imidazoles is 0.001 ~ 0.1 mol/L, solvent thermal reaction is carried out, so that cobalt/cobalt oxide nano wire is reacted with 2-methylimidazole
Generate one kind that ZIF-67(ZIF-67 is metal-organic framework) nano wire, obtain CC@ZIF-67；The solvent thermal reaction
Temperature is 60 ~ 200 DEG C, and the time is 2 ~ 48 h；
(3) under protection gas and carbon source gaseous mixture, the CC@ZIF-67 that (2) obtain is pyrolyzed at high temperature, so that golden
Category-organic frame is carbonized and grows carbon nanotube, obtains CC@Co/CNTs, further increases the electric conductivity and specific surface of material
Product；The temperature of the high temperature pyrolysis is 500 ~ 1500 DEG C, and the time is 0.5 ~ 12 h；
(4) more lithium sulfide solution of the surface@Co/CNTs CC one layer of 1 M of smearing obtained in (3) are as active material, i.e.,
Obtain flexible anode；
Step 2: the preparation of flexible cathode:
(1) in electrolytic cell, using charcoal cloth or CC@Co/CNTs as cathode, metal lithium sheet is anode, is electroplated, electric current
Density is 0.01 ~ 10 mA/cm2, electroplating time is 2 ~ 96 h, specific to be accepted or rejected according to current density and required capacity；
Or by after the melting of 0.2 ~ 20g lithium metal, by it is long with it is wide be that the charcoal of 1 ~ 8cm walks and infiltrates 3 ~ 120s in molten lithium, draw
Lithium source is cooled to after room temperature and obtains flexible cathode；
Step 3: the preparation of flexible lithium sulphur battery:
PP diaphragm is added between the resulting flexible anode of step 1 and the resulting flexible cathode of step 2,20 L ~ 2 μ are added dropwise
ML electrolyte is packaged to get flexible lithium sulphur battery is arrived using aluminum plastic film.
Specific embodiment 4: a kind of preparation method of double charcoal cloth flexible lithium sulphur batteries described in specific embodiment three,
In step 1 (2), the organic solvent is one of methanol, ethyl alcohol, DMF, NMP.
Specific embodiment 5: a kind of preparation method of double charcoal cloth flexible lithium sulphur batteries described in specific embodiment three,
In step 1 (3), the protection gas bag includes argon gas and nitrogen；The carbon source include gaseous state and the stronger hydrocarbon of volatility, alkene,
Alkynes, alcohols class carbonaceous organic material, specifically the similar organic matter of such as methane, ethane, propane, ethylene, acetylene, methanol, ethyl alcohol, described
Protecting the ratio of gas and carbon source is 1 ~ 49:1.
Specific embodiment 6: a kind of preparation method of double charcoal cloth flexible lithium sulphur batteries described in specific embodiment three,
In step 3, the electrolyte is the DOL/DME solution dissolved with 1M LiTFSI.
Embodiment 1:
(1) by 2 mmol cobalt chlorides, 2 mmol urea are dissolved in 50 mL ultrapure waters, and the water heating kettle of 100 mL is added
In, and the charcoal cloth of the cm of 3 cm × 3 is placed in water heating kettle bottom；6 h are reacted at 90 DEG C, obtaining load has cobalt/cobalt oxide to receive
The charcoal cloth of rice noodles is named as CC@CoOx。
(2) 1 g 2-methylimidazole is dissolved in 50 mL ethanol solutions and is added in the water heating kettle of 100 mL, by first
Step gained CC@CoOxIt is placed in water heating kettle bottom；In 80 DEG C of 12 h of reaction, so that cobalt/cobalt oxide nano wire and 2-methylimidazole are anti-
Metal-organic framework (ZIF-67) nano wire should be generated, CC@ZIF-67 is obtained.
(3) CC@ZIF-67 is pyrolyzed in the mixed atmosphere of ethyl alcohol and argon gas, is pyrolyzed 2 h at a temperature of 700 DEG C,
Obtain CC@Co/CNTs.
(4) using CC@Co/CNTs as cathode, metal lithium sheet is anode, is electroplated, and current density is 0.02 mA/cm2,
36 h of electroplating time obtains lithium-sulfur cell cathode.
(5) more lithium sulfide solution of 50 microlitres of 1mol/L are added drop-wise to CC@Co/CNTs as active material, obtain lithium sulphur
The anode of battery.Business PP diaphragm is added between above-mentioned gained flexibility positive electrode and negative electrode, 100 microlitres of lithium-sulfur cell electrolysis are added dropwise
Liquid is packaged to obtain flexible battery using aluminum plastic film.
The carbon fiber smoother of original commercialization charcoal cloth as can be seen from Figure 2, and Fig. 3 is CC@prepared by embodiment 1
The stereoscan photograph of Co/CNTs, it can be seen that the carbon fiber surface of charcoal cloth is uniformly dispersed with CC@CoOxNano wire, and CC@
CoOxThe presence of nano wire greatly improves the specific surface area of charcoal cloth, while CoOxAs a kind of polar material, with lithium-sulfur cell
Have between the more lithium sulfides of charge and discharge intermediate product compared with strong interaction, conducive to the long circulation life of battery.
Embodiment 2:
(1) by 2 mmol cobalt chlorides, 2 mmol urea are dissolved in 50 mL ultrapure waters, and the water heating kettle of 100 mL is added
In, and the charcoal cloth of the cm of 3 cm × 3 is placed in water heating kettle bottom；6 h are reacted at 90 DEG C, obtaining load has cobalt/cobalt oxide to receive
The charcoal cloth of rice noodles is named as CC@CoOx。
(2) directly by CC@CoOxIt is pyrolyzed in the mixed atmosphere of ethyl alcohol and argon gas, is pyrolyzed 2 at a temperature of 600 DEG C
H obtains CC@Co/CNTs.
(3) using CC@Co/CNTs as cathode, metal lithium sheet is anode, is electroplated, and current density is 0.02 mA/cm2,
36 h of electroplating time obtains lithium-sulfur cell cathode.
(4) more lithium sulfide solution of 50 microlitres of 1mol/L are added drop-wise to CC@Co/CNTs as active material, obtain lithium sulphur
The anode of battery.Business PP diaphragm is added between above-mentioned gained flexibility positive electrode and negative electrode, 100 microlitres of lithium-sulfur cell electrolysis are added dropwise
Liquid is packaged to obtain flexible battery using aluminum plastic film.
Fig. 4 is the stereoscan photograph for plating CC/Li flexibility cathode prepared by lithium, and lithium deposition is more equal as seen from the figure
It is even, without Li dendrite.Meanwhile since charcoal cloth has three-dimensional conductive network in this CC/Li flexibility cathode, it is conducive to battery in charge and discharge
The dissolution of lithium ion in electric process and uniform deposition, to be conducive to the long circulation life of lithium-sulfur cell.
Embodiment 3:
(1) by 2 mmol cobalt chlorides, 2 mmol urea are dissolved in 50 mL ultrapure waters, and the water heating kettle of 100 mL is added
In, and the charcoal cloth of the cm of 3 cm × 3 is placed in water heating kettle bottom；6 h are reacted at 90 DEG C, obtaining load has cobalt/cobalt oxide to receive
The charcoal cloth of rice noodles is named as CC@CoOx。
(2) 1 g 2-methylimidazole is dissolved in 50 mL ethanol solutions and is added in the water heating kettle of 100 mL, by first
Step gained CC@CoOxIt is placed in water heating kettle bottom；In 80 DEG C of 12 h of reaction, so that cobalt/cobalt oxide nano wire and 2-methylimidazole are anti-
Metal-organic framework (ZIF-67) nano wire should be generated, CC@ZIF-67 is obtained.
(3) CC@ZIF-67 is pyrolyzed in the mixed atmosphere of ethyl alcohol and argon gas, is pyrolyzed 2 h at a temperature of 700 DEG C,
Obtain CC@Co/CNTs.
(4) after melting lithium metal, enough lithium sources are drawn into the infiltration of charcoal cloth into molten lithium, are obtained after cooling flexible negative
Pole.
(5) more lithium sulfide solution of 50 microlitres of 1mol/L are added drop-wise to CC@Co/CNTs as active material, obtain lithium sulphur
The anode of battery.Business PP diaphragm is added between above-mentioned gained flexibility positive electrode and negative electrode, 100 microlitres of lithium-sulfur cell electrolysis are added dropwise
Liquid is packaged to obtain flexible battery using aluminum plastic film.
Fig. 5 is CC@Co/CNTs flexible electrode first charge-discharge curve in 0.25C, and discharge capacity reaches 647 for the first time
MAh/g, initial charge capacity are 685 mAh/g.
Claims (4)
1. a kind of preparation method of double charcoal cloth flexible lithium sulphur batteries, the lithium-sulfur cell by flexible anode, flexible cathode, PP every
Film, electrolyte, aluminum plastic film are constituted；The PP diaphragm is located between flexible anode and flexible cathode；The described flexibility anode and
Electrolyte is full of between flexible cathode and PP diaphragm；The flexibility anode and flexible cathode covering are equipped with aluminum plastic film；Described
The carrier of flexible anode and flexible cathode is charcoal cloth, CC@CoOx, one of CC@ZIF-67 and CC@Co/CNTs or a variety of
Stack combinations；It is characterized by: specific step is as follows for the method:
Step 1: the preparation of flexible anode:
(1) soluble cobalt and urea are dissolved in the water, wherein soluble cobalt concentration is 0.001 ~ 0.2 mmol/L, urine
Plain concentration is 0.001 ~ 0.2 mmol/L, and 10 ~ 80 mL mixed solution obtained above is taken to be put into water heating kettle, and is 1 by length × width
~ 4cm × 1 ~ 8cm charcoal cloth immerses in the mixed solution of water heating kettle, carries out hydro-thermal reaction, and obtaining load has cobalt/cobalt oxide nano wire
Charcoal cloth, be named as CC@CoOx；The temperature of the hydro-thermal reaction is 50 ~ 150 DEG C, and the time is 2 ~ 48 h；
(2) 2-methylimidazole is dissolved in organic solvent, and by CC@CoO made from (1)xIt is put into wherein, makes 2-methylimidazole
Concentration be 0.001 ~ 0.1 mol/L, carry out solvent thermal reaction so that cobalt/cobalt oxide nano wire reacts generation with 2-methylimidazole
Metal-organic framework nano wire obtains CC@ZIF-67；The temperature of the solvent thermal reaction is 60 ~ 200 DEG C, and the time is 2 ~ 48
h；
(3) under protection gas and carbon source gaseous mixture, the CC@ZIF-67 that (2) obtain is pyrolyzed at high temperature, so that metal-
Organic frame is carbonized and grows carbon nanotube, obtains CC@Co/CNTs；The temperature of the high temperature pyrolysis is 500 ~ 1500 DEG C, the time
For 0.5 ~ 12 h；
(4) more lithium sulfide solution of the surface@Co/CNTs CC one layer of 1 M of smearing obtained in (3) are arrived as active material
Flexible anode；
Step 2: the preparation of flexible cathode:
(1) in electrolytic cell, using charcoal cloth or CC@Co/CNTs as cathode, metal lithium sheet is anode, is electroplated, current density
For 0.01 ~ 10 mA/cm2, electroplating time is 2 ~ 96 h；Or will after the melting of 0.2 ~ 20g lithium metal, will it is long with it is wide be 1 ~
The charcoal cloth of 8cm infiltrates 3 ~ 120s in molten lithium, draws lithium source, is cooled to after room temperature and obtains flexible cathode；
Step 3: the preparation of flexible lithium sulphur battery:
PP diaphragm is added between the resulting flexible anode of step 1 and the resulting flexible cathode of step 2,20 mL of μ L ~ 2 are added dropwise
Electrolyte is packaged to get flexible lithium sulphur battery is arrived using aluminum plastic film.
2. a kind of preparation method of double charcoal cloth flexible lithium sulphur batteries according to claim 1, it is characterised in that: step 1
(2) in, the organic solvent is one of methanol, ethyl alcohol, DMF, NMP.
3. a kind of preparation method of double charcoal cloth flexible lithium sulphur batteries according to claim 1, it is characterised in that: step 1
(3) in, the protection gas bag includes argon gas and nitrogen；The carbon source includes gaseous state and the stronger hydrocarbon of volatility, alkene, alkynes, alcohols
The ratio of carbonaceous organic material, the protection gas and carbon source is 1 ~ 49:1.
4. a kind of preparation method of double charcoal cloth flexible lithium sulphur batteries according to claim 1, it is characterised in that: step 3
In, the electrolyte is the DOL/DME solution dissolved with 1M LiTFSI.
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| CN107706350B (en) * | 2017-10-16 | 2021-01-05 | 四川华昆能源有限责任公司 | Electrode structure of three-dimensional lithium anode and corresponding preparation method of lithium-sulfur battery |
| CN110350206B (en) * | 2018-08-27 | 2022-04-26 | 哈尔滨工业大学 | Vertical graphene loaded carbon nanotube composite electrode material, preparation method thereof and application of vertical graphene loaded carbon nanotube composite electrode material in all-solid-state zinc-air battery |
| CN109346702B (en) * | 2018-10-30 | 2021-04-27 | 肇庆市华师大光电产业研究院 | Negative electrode material of lithium battery and preparation method thereof |
| CN109592666A (en) * | 2018-11-24 | 2019-04-09 | 天津大学 | A kind of preparation method of celestial being's palmate carbon nano pipe array |
| CN110311111B (en) * | 2019-07-01 | 2022-05-24 | 华南理工大学 | N-doped CNT in-situ coated Co nanoparticle composite material and preparation and application thereof |
| CN110828808B (en) * | 2019-11-19 | 2022-04-26 | 肇庆市华师大光电产业研究院 | Preparation method and application of lithium-sulfur battery positive electrode material |
| CN111740075A (en) * | 2020-06-16 | 2020-10-02 | 南方科技大学 | Flexible electrode and flexible battery based on carbonized silk fabric |
| CN114583166A (en) * | 2020-12-01 | 2022-06-03 | 河南大学 | Lithium-sulfur battery and preparation method thereof |
| CN114583165A (en) * | 2020-12-01 | 2022-06-03 | 河南大学 | Metal/metal oxide lithium-sulfur battery positive electrode framework structure |
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