CN107887553A - A kind of multi-functional lithium-sulfur cell barrier film and preparation method thereof - Google Patents
A kind of multi-functional lithium-sulfur cell barrier film and preparation method thereof Download PDFInfo
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Abstract
A kind of multi-functional lithium-sulfur cell barrier film and preparation method thereof, belongs to technical field of energy material.The lithium-sulfur cell barrier film is using sodium lignin sulfonate and the compound obtained composite of graphene oxide of reduction as coating, solves the single technical problem of simple graphite ene coatings function, obtained composite is coated on lithium-sulfur cell barrier film, coating is under ionization, powered region can be formed in the electrolytic solution, so that the side of barrier film is negatively charged, according to the principle of homopolar-repulsion, electronegative barrier film can substantially repel same electronegative polysulfide, effectively reduce the possibility that polysulfide passes through barrier film, reduce shuttle effect, improve battery performance.
Description
Technical field
The invention belongs to technical field of energy material, and in particular to a kind of barrier film and its system for high-performance lithium-sulfur cell
Preparation Method.
Background technology
New-energy automobile is to alleviate China's Pressure on Energy, reply climate change, promote car industry and transportation to hold
The important measure of supervention exhibition.In recent years, China's oil consumption external dependence degree reaches 60.6%, energy security, especially oil gas
The safety of resource, it has also become an important factor for restricting economic development, it is to realize that auto industry makes the transition to greatly develop renewable resource
The only way which must be passed, and safeguard the strategic choice of Chinese energy safety.However, renewable resource has uncontrollability and unstable
Property is, it is necessary to support the use reliable energy-storage battery.Lithium ion battery is as currently used energy storage device, by itself storage volume
Limitation, be still difficult to meet requirement of the following electrokinetic cell to energy-storage battery height ratio capacity and high-energy-density.Therefore, research is opened
Sending out lithium ion battery high performance is particularly important.
Lithium-sulfur cell (Li-S) is one kind of lithium ion battery, and its theoretical specific capacity is up to 1675mAh/g, and theory compares energy
Reach 2600Wh/kg, be 5-10 times of traditional ferric phosphate lithium cell, and sulphur have the advantages that in itself it is pollution-free, inexpensive so that
Li-S batteries turn into international research focus, and are considered as the ideal chose (Nature of Future New Energy Source Vehicular dynamic battery
Mater.8,500,2009).However, the dissolving of polysulfide and its by the effect that shuttled caused by barrier film in lithium-sulfur cell, right
The performance and security of lithium-sulfur cell all bring serious challenge so that commercialization lithium-sulfur cell slower development.
In order to prevent the shuttle effect in lithium-sulfur cell, barrier film is generally set in the battery, the barrier film is being located at battery just
Between negative pole, during charge and discharge cycles, serving prevents both positive and negative polarity from contacting and short circuit occurs while allows lithium ion free
The effect of migration.Important component of the barrier film as lithium-sulfur cell, the good and bad performance to battery of its performance have important shadow
Ring.At present, conventional lithium-sulfur cell barrier film is traditional polypropylene diaphragm (PP), although such barrier film cost is low, in battery
The shuttle of polysulfide can not be stopped in cyclic process, easily cause serious capacitance loss, and lithium ion deposition is uneven, holds
Obvious Li dendrite easily is produced in negative pole, meanwhile, its heat resistance is very poor, easily rupturable generation battery short circuit, triggers safety problem.
The performance that lithium-sulfur cell is improved by modified diaphragm is that the focus, Huang etc. that current lithium-sulfur cell barrier film is studied is reported
A kind of simple graphite ene coatings in road, by coating a layer graphene on common PP barrier films, can press down to a certain extent
Shuttle effect processed, improve the circulation number of turns and the load of battery；But because the functionalization degree of graphene is single, only by physics
Structure can not completely inhibit the shuttle of polysulfide, simultaneously as the thermal conductivity of single coating is poor, barrier film is local easily to be produced
Heat is concentrated, and is formed " focus ", and lithium-sulfur cell security performance still suffers from certain hidden danger.Therefore, will by the method for chemical synthesis
Chemical group with certain function is combined with graphene, and it is current barrier film coating development to obtain multi-functional graphite ene coatings
Inexorable trend.
The content of the invention
A kind of the defects of present invention exists for background technology, it is proposed that composite for lithium-sulfur cell barrier film coating
Preparation method, by sodium lignin sulfonate (SL) and reduction graphene oxide (rGO) carry out it is compound, solve simple graphene
The single technical problem of layer function is applied, obtained composite effectively can suppress in battery coated on lithium-sulfur cell barrier film
Shuttle effect, improve the performance of battery.
Technical scheme is as follows：
A kind of preparation method of composite for lithium-sulfur cell barrier film coating, comprises the following steps：
Step 1：Graphene oxide (GO) is scattered in dimethylformamide (DMF), ultrasound, obtaining uniform concentration is
1~2mg/mL graphene dispersing solution；
Step 2：Hexamethylene diisocyanate (HDI) is added in dimethylformamide (DMF), is well mixed, obtains
Mixed liquor heat 5min in 140~150 DEG C of oil baths；Wherein, in the mixed liquor hexamethylene diisocyanate concentration
For 3~5 μ L/mL；
Step 3：The graphene dispersing solution that step 1 is obtained is slowly added to step 2 with 10~20mL/min speed and handled
In mixed liquor afterwards, after being uniformly mixed, 30min is heated in 140~150 DEG C of oil baths, obtains mixed liquor A；
Step 4：Sodium lignin sulfonate is added in dimethylformamide (DMF), being then heated to 80 DEG C makes sulfomethylated lignin
Sour sodium is completely dissolved, you can obtains the lignin sulfonic acid sodium solution that concentration is 0.7~1mg/mL；
Step 5：The lignin sulfonic acid sodium solution that step 4 obtains is slowly added to step 3 with 10~20mL/min speed
In obtained mixed liquor A, obtained mixed liquid B under inert gas shielding, keep 140~150 DEG C of thermotonuses 60~
120min；Wherein, the concentration of the graphene oxide reduced in the mixed liquid B is 0.25~0.5mg/mL, sodium lignin sulfonate
Concentration be 0.5~0.7mg/mL；
Step 6：After the completion of reaction, question response liquid naturally cools to room temperature, after taking out and using deionized water centrifuge washing,
The composite of the graphene oxide@sodium lignin sulfonates reduced, it is described be used for by being freeze-dried 12~24h
The composite of lithium-sulfur cell barrier film coating.
Further, inert gas described in step 5 is nitrogen, argon gas etc..
A kind of preparation method of the lithium-sulfur cell barrier film obtained based on above-mentioned composite, is comprised the following steps：
Step 1：The graphene oxide@sodium lignin sulfonates composite for the reduction that the above method is obtained adds with conductive
Agent (carbon black, Ketjen black etc.), binding agent (Kynoar etc.) are 7 according to mass ratio:2:After 1 ratio mixing, N- first is added
In base pyrrolidones (NMP), the concentration of graphene oxide@sodium lignin sulfonates (the rGO@SL) composite reduced is prepared
For 30~100mg/mL slurry, be ground to slurry in aterrimus it is thick after, continuously add 1-METHYLPYRROLIDONE (NMP) and enter
Row dilution, makes the concentration of the graphene oxide@sodium lignin sulfonate composites of reduction be reduced to 5~20mg/mL, then grind and make
It is completely dispersed；
Step 2：The slurry obtained after step 1 is handled is formed on PP barrier films using the method filtered, as barrier film
Coating, you can obtain the lithium-sulfur cell barrier film.
Further, in the lithium-sulfur cell barrier film that step 2 obtains, the thickness of the coating is 20~50 μm.
Beneficial effects of the present invention are：
1st, compared to single graphite ene coatings, the coating that rGO SL provided by the invention are formed is under ionization, meeting
Powered region is formed in the electrolytic solution so that the side of barrier film is negatively charged, according to the principle of homopolar-repulsion, electronegative barrier film
Same electronegative polysulfide can substantially be repelled, the possibility that polysulfide passes through barrier film is effectively reduced, reduce shuttle
Effect, improve battery performance.
2nd, the present invention combines dendritic sodium lignin sulfonate by chemical bond with graphene, has further expanded graphite
The space structure of alkene；Obtained rGO@SL composites can form 3D loose structures, increase sulphur and conduction after being coated on barrier film
The attaching space of additive, effectively improve the electric conductivity and capacity of battery.
3rd, the coating that the rGO@SL composites that the present invention obtains are formed has good thermal conductivity, in high temperature environments work
When making, the barrier film for coating the coating is not easy to produce focus, effectively increases the heat resistance of barrier film, optimizes the safety of battery
Performance.
Brief description of the drawings
Fig. 1 is graphene oxide (GO) and the graphene oxide@sodium lignin sulfonates composite (rGO@SL) of reduction
XPS schemes；
The SEM that Fig. 2 is GO schemes；
Fig. 3 is that the SEM of rGO@SL composites schemes；
Fig. 4 is that the rGO@SL composites (b) that conventional graphite alkene (a) obtains with the embodiment of the present invention are soaked in Li-S electrolysis
The zeta potential diagrams tested in liquid；
Fig. 5 is the PP barrier films (GO/PP) with graphite ene coatings and sheet in not coated piece of PP barrier films (PP), background technology
The chemical property for the lithium-sulfur cell that PP barrier film (rGO@SL/PP) of the invention based on rGO@SL coatings makes；(a) to be forthright again
Can, (b-c) is the cycle performance of different multiplying.
Embodiment
With reference to the accompanying drawings and examples, technical scheme is described in detail.
A kind of preparation method of composite for lithium-sulfur cell barrier film coating, comprises the following steps：
Step 1：100~200mg graphene oxides (GO) are scattered in 100mL dimethylformamides (DMF), ultrasound 10
~30min, obtain the graphene dispersing solution that uniform concentration is 1~2mg/mL；
Step 2：300~500 μ L hexamethylene diisocyanates (HDI) are added into 100mL dimethylformamides (DMF)
In, it is well mixed, obtained mixed liquor condensation heating in oil bath to 140~150 DEG C, is incubated 5min；Wherein, the mixed liquor
The concentration of middle hexamethylene diisocyanate is 3~5 μ L/mL；In the process, graphene oxide (GO) is reduced to reduction
Graphene oxide (rGO)；
Step 3：The graphene dispersing solution that step 1 is obtained is slowly added to step 2 with 10~20mL/min speed and handled
In mixed liquor afterwards, after being uniformly mixed, 30min is heated in 140~150 DEG C of oil baths, obtains mixed liquor A；
Step 4：200~300mg sodium lignin sulfonates are added in 300mL dimethylformamides (DMF), are then heated to
80 DEG C are completely dissolved sodium lignin sulfonate, you can obtain the lignin sulfonic acid sodium solution that concentration is 0.7~1mg/mL；
Step 5：The lignin sulfonic acid sodium solution that step 4 obtains is slowly added to step 3 with 10~20mL/min speed
In obtained mixed liquor A, obtained mixed liquid B keeps 140~150 DEG C of 60~120min of thermotonus under argon gas protection；Its
In, the concentration of the graphene oxide reduced in the mixed liquid B is 0.25~0.5mg/mL, and the concentration of sodium lignin sulfonate is
0.5~0.7mg/mL；
Step 6：After the completion of reaction, question response liquid naturally cools to room temperature, takes out, using deionized water as detergent,
After continuous centrifugal washing three times, by being freeze-dried 12~24h, rGO@SL composites are obtained, it is as described to be used for lithium sulphur electricity
The composite of pond barrier film coating.
A kind of preparation method of the lithium-sulfur cell barrier film obtained based on above-mentioned composite, is comprised the following steps：
Step 1：The rGO@SL composites that the above method is obtained and conductive additive (carbon black, Ketjen black etc.), bonding
Agent (Kynoar etc.) is 7 according to mass ratio:2:After 1 ratio mixing, add in 500 μ lN- methyl pyrrolidones (NMP),
The slurry for obtaining the concentration of rGO@SL composites as 30~100mg/mL is prepared, grinds 30 minutes, treats that slurry glues in aterrimus
After thick shape, continuously adding 1-METHYLPYRROLIDONE (NMP) and be diluted, the concentration for making rGO@SL composites is reduced to 5~
20mg/mL, then grinding 30 minutes is completely dispersed it；
Step 2：The PP barrier films of routine are cut to 5cm × 5cm blockage, is positioned over after being infiltrated using NMP and commonly takes out
Filter flask mouth, the slurry obtained after then step 1 is handled are filtered on PP barrier films by Suction filtration device, as the coating of barrier film,
It can obtain the lithium-sulfur cell barrier film.
Further, in the lithium-sulfur cell barrier film that step 2 obtains, the thickness of the coating is 20~50 μm.
Embodiment
A kind of preparation method of lithium-sulfur cell barrier film, specifically includes following steps：
Step 1, after 30g water removal molecular sieves are cleaned by ultrasonic 5 times using alcohol, 24h is toasted in 100 DEG C of baking ovens, with complete
The full moisture removed in molecular sieve；
Step 2, the molecular sieve for going step 1 after moisture removal are put into 800mL dimethylformamides (DMF), are removed in DMF
Moisture, the DMF after being removed water；When taking water removal DMF, supernatant liquid is drawn using liquid-transfering gun, the DMF in subsequent step
Solution is water removal DMF；
Step 3,100mg graphene oxides (GO) are slowly added in 100mL dimethylformamides (DMF), ultrasound
30min, obtain uniform graphene oxide dispersion；
Step 4,350 μ L hexamethylene diisocyanates (HDI) are added in 100mL dimethylformamides (DMF), mixing
Uniformly, the mixed liquor obtained condensation heating in oil bath to 140 DEG C, is incubated 5min；
Step 5, the temperature of holding mixed liquor are 140 DEG C, and the graphene dispersing solution that step 3 is obtained is with 20mL/min speed
Rate is slowly added to, and constant temperature 30min, obtains mixed liquor A；In the process, graphene oxide (GO) is reduced to the oxidation of reduction
Graphene (rGO)；
Step 6,300mg sodium lignin sulfonate powder is taken in beaker, 24h is dried in 80 DEG C of vacuum drying chambers, completely
Remove contained humidity in powder；Then, dried sodium lignin sulfonate is added in 300mL dimethylformamides (DMF), so
After be heated to 80 DEG C and be completely dissolved sodium lignin sulfonate, you can obtain the lignin sulfonic acid sodium solution that concentration is 1mg/mL；
Step 7, above-mentioned lignin sulfonic acid sodium solution is slowly added to the mixed liquor that step 5 obtains with 10mL/min speed
In A, obtained mixed liquid B keeps 140 DEG C of thermotonus 120min under argon gas protection；
After the completion of step 8, reaction, question response liquid naturally cools to room temperature, takes out, using deionized water as detergent,
After continuous centrifugal washing three times, unnecessary sodium lignin sulfonate is removed, finally by freeze-drying 24h, it is compound to obtain rGO@SL
Material；
Step 9, by 21mg rGO@SL composites, 6mg carbon blacks, 3mg Kynoar according to 7:2:1 ratio mixing
After add 500 μ l 1-METHYLPYRROLIDONEs (NMP) solution, prepare and obtain the slurry that the concentration of rGO@SL composites is 60mg/mL
Material, grind 30 minutes, after slurry is thick in aterrimus, 1-METHYLPYRROLIDONE (NMP) progress for continuously adding 2.5mL is dilute
Release, the concentration of rGO@SL composites is reduced to 10mg/mL, then grinding 30 minutes is completely dispersed it；
Step 10, the PP barrier films of routine are cut to 5cm × 5cm blockage, are positioned over after being infiltrated using 1mL NMP general
It is logical to filter bottleneck, above-mentioned slurry is then drawn using liquid-transfering gun and is added dropwise on PP barrier films, 1.5mL slurries is inhaled every time, passes through suction filtration
Device is filtered onto PP barrier films, and as the coating of barrier film, coating layer thickness is 20 μm, you can obtains the lithium-sulfur cell barrier film.
Fig. 1 is that the XPS of graphene (GO) and rGO@SL composites schemes；As shown in Figure 1, the rGO@SL that the present invention obtains are answered
Condensation material (rGO@SL) has obvious N, S chemical bonds, shows that sodium lignin sulfonate and the graphene oxide of reduction have passed through chemistry
Bond is closed；Meanwhile O keys substantially die down, show that graphene oxide has been reduced to the graphene oxide of reduction.
Fig. 3 is the SEM figures for the rGO@SL composites that the present invention obtains；From the figure 3, it may be seen that the rGO@SL that the present invention obtains are answered
Condensation material surface is substantial amounts of dendritic structure, and the structure can not only effectively prevent the shuttle of polysulfide, moreover it is possible to be carried for electronics
For substantial amounts of transmission channel, and then improve the stability and capacity of battery.
Fig. 4 is that the rGO@SL composites (b) that conventional graphite alkene (a) obtains with the embodiment of the present invention are soaked in Li-S electrolysis
The zeta potential diagrams tested in liquid；As shown in Figure 4, compared with conventional graphite alkene, the rGO@SL composites that embodiment obtains exist
The characteristics of negative electricity is rendered obvious by electrolyte.
Fig. 5 is the PP barrier films (GO/PP) with graphite ene coatings and sheet in not coated piece of PP barrier films (PP), background technology
The chemical property for the lithium-sulfur cell that PP barrier film (rGO@SL/PP) of the invention based on rGO@SL coatings makes；(a) to be forthright again
Can, (b-c) is the cycle performance of different multiplying.Show, the lithium-sulfur cell that PP barrier film of the present invention based on rGO@SL coatings makes
With good high rate performance and cycle performance.
Claims (4)
1. a kind of preparation method of composite for lithium-sulfur cell barrier film coating, comprises the following steps：
Step 1：Graphene oxide is scattered in dimethylformamide, ultrasound, obtains the graphene point that concentration is 1~2mg/mL
Dispersion liquid；
Step 2：Hexamethylene diisocyanate is added in dimethylformamide, is well mixed, obtained mixed liquor 140~
5min is heated in 150 DEG C of oil baths；Wherein, the concentration of hexamethylene diisocyanate is 3~5 μ L/mL in the mixed liquor；
Step 3：The graphene dispersing solution that step 1 is obtained adds the mixing after step 2 is handled with 10~20mL/min speed
In liquid, after being uniformly mixed, 30min is heated in 140~150 DEG C of oil baths, obtains mixed liquor A；
Step 4：Sodium lignin sulfonate is added in dimethylformamide, being then heated to 80 DEG C makes sodium lignin sulfonate completely molten
Solution, you can obtain the lignin sulfonic acid sodium solution that concentration is 0.7~1mg/mL；
Step 5：The lignin sulfonic acid sodium solution that step 4 obtains is mixed with what 10~20mL/min speed addition step 3 obtained
Close in liquid A, obtained mixed liquid B keeps 140~150 DEG C of 60~120min of thermotonus under inert gas shielding；Wherein,
The concentration of the graphene oxide reduced in the mixed liquid B is 0.25~0.5mg/mL, the concentration of sodium lignin sulfonate for 0.5~
0.7mg/mL；
Step 6：After the completion of reaction, question response liquid naturally cools to room temperature, takes out and using after deionized water centrifuge washing, passes through
12~24h is freeze-dried, the composite of the graphene oxide@sodium lignin sulfonates reduced is as described to be used for lithium sulphur
The composite of battery diaphragm coating.
2. the preparation method of the composite according to claim 1 for lithium-sulfur cell barrier film coating, it is characterised in that
Inert gas described in step 5 is nitrogen or argon gas.
3. a kind of preparation method of the lithium-sulfur cell barrier film based on composite described in claim 1, comprises the following steps：
Step 1：By the graphene oxide@sodium lignin sulfonates composite reduced described in claim 1 and conductive additive, glue
It is 7 that agent, which is tied, according to mass ratio:2:After 1 ratio mixing, add in 1-METHYLPYRROLIDONE, prepare the graphite oxide reduced
The concentration of alkene@sodium lignin sulfonate composites be 30~100mg/mL slurry, be ground to slurry in aterrimus it is thick after,
Continuously add 1-METHYLPYRROLIDONE (NMP) to be diluted, make the graphene oxide@sodium lignin sulfonate composites of reduction
Concentration is reduced to 5~20mg/mL, then grinding is completely dispersed it；
Step 2：The slurry that is obtained after step 1 is handled is formed on PP barrier films using the method filtered, as the coating of barrier film,
It can obtain the lithium-sulfur cell barrier film.
4. the preparation method of lithium-sulfur cell barrier film according to claim 3, it is characterised in that the lithium-sulfur cell that step 2 obtains
In barrier film, the thickness of the coating is 20~50 μm.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963152A (en) * | 2018-06-28 | 2018-12-07 | 肇庆市华师大光电产业研究院 | A kind of preparation method of the g-C3N4/RGO coating applied to lithium-sulfur cell diaphragm |
| CN108987755A (en) * | 2018-08-28 | 2018-12-11 | 南京工业大学 | A kind of lignosulfonates are used for the method and its application of lithium-sulfur cell as binder |
| CN110571390A (en) * | 2019-08-23 | 2019-12-13 | 华南师范大学 | Method for compositely modifying lithium-sulfur battery diaphragm by salinized graphene and carbon nano tube |
| CN111370620A (en) * | 2020-02-26 | 2020-07-03 | 华中科技大学 | Functional diaphragm of lithium-sulfur battery and preparation method thereof |
| CN112259927A (en) * | 2020-10-23 | 2021-01-22 | 青岛大学 | Lithium-sulfur battery diaphragm compounded with redox graphene and preparation method thereof |
| CN113206255A (en) * | 2021-05-06 | 2021-08-03 | 中国铁塔股份有限公司四川省分公司 | High-performance lithium-sulfur battery composite positive electrode material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979561A (en) * | 2015-05-23 | 2015-10-14 | 保定金阳光能源装备科技有限公司 | Graphene coating agent and preparation method for producing super lead-acid storage battery negative electrode plate from graphene coating agent |
| US20150307356A1 (en) * | 2013-06-05 | 2015-10-29 | The United States Of America As Represented By The Secretary Of Agriculture | Methods for Synthesizing Graphene from a Lignin Source |
| CN106654215A (en) * | 2016-12-30 | 2017-05-10 | 温州大学 | Small biological molecule and graphene composite material functional film and preparation method thereof |
| CN107069033A (en) * | 2017-03-21 | 2017-08-18 | 中国科学院福建物质结构研究所 | A kind of battery electrode of graphene-containing fiber and its preparation method and application |
-
2017
- 2017-10-18 CN CN201710970785.9A patent/CN107887553B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150307356A1 (en) * | 2013-06-05 | 2015-10-29 | The United States Of America As Represented By The Secretary Of Agriculture | Methods for Synthesizing Graphene from a Lignin Source |
| CN104979561A (en) * | 2015-05-23 | 2015-10-14 | 保定金阳光能源装备科技有限公司 | Graphene coating agent and preparation method for producing super lead-acid storage battery negative electrode plate from graphene coating agent |
| CN106654215A (en) * | 2016-12-30 | 2017-05-10 | 温州大学 | Small biological molecule and graphene composite material functional film and preparation method thereof |
| CN107069033A (en) * | 2017-03-21 | 2017-08-18 | 中国科学院福建物质结构研究所 | A kind of battery electrode of graphene-containing fiber and its preparation method and application |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963152A (en) * | 2018-06-28 | 2018-12-07 | 肇庆市华师大光电产业研究院 | A kind of preparation method of the g-C3N4/RGO coating applied to lithium-sulfur cell diaphragm |
| CN108963152B (en) * | 2018-06-28 | 2021-05-25 | 肇庆市华师大光电产业研究院 | g-C applied to lithium-sulfur battery diaphragm3N4Preparation method of/RGO coating |
| CN108987755A (en) * | 2018-08-28 | 2018-12-11 | 南京工业大学 | A kind of lignosulfonates are used for the method and its application of lithium-sulfur cell as binder |
| CN110571390A (en) * | 2019-08-23 | 2019-12-13 | 华南师范大学 | Method for compositely modifying lithium-sulfur battery diaphragm by salinized graphene and carbon nano tube |
| CN111370620A (en) * | 2020-02-26 | 2020-07-03 | 华中科技大学 | Functional diaphragm of lithium-sulfur battery and preparation method thereof |
| CN112259927A (en) * | 2020-10-23 | 2021-01-22 | 青岛大学 | Lithium-sulfur battery diaphragm compounded with redox graphene and preparation method thereof |
| CN113206255A (en) * | 2021-05-06 | 2021-08-03 | 中国铁塔股份有限公司四川省分公司 | High-performance lithium-sulfur battery composite positive electrode material and preparation method thereof |
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