CN108039457A - A kind of preparation method of lithium sulfur battery anode material - Google Patents
A kind of preparation method of lithium sulfur battery anode material Download PDFInfo
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- CN108039457A CN108039457A CN201711091916.2A CN201711091916A CN108039457A CN 108039457 A CN108039457 A CN 108039457A CN 201711091916 A CN201711091916 A CN 201711091916A CN 108039457 A CN108039457 A CN 108039457A
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- H—ELECTRICITY
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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Abstract
The invention discloses a kind of preparation method of lithium sulfur battery anode material, comprise the following steps：Step 1, resorcinol, furfural and methenamine are added in solvent successively and mixed；Step 2, step 1 resulting solution is thermally treated resulting in gel in sealing；Step 3, gained gel carries out being heat-treated to obtain xerogel；Step 4, step 3 gained xerogel is crushed, leads to nitrogen heat treatment, that is, obtain nitrogen-doped carbon aeroge；Step 5, hydrochloric acid, hypo, dispersant and step 4 gained carbon aerogels are added in distilled water successively, stirred；Step 6, it is step 5 gained suspension is 20 minutes ultrasonic；Step 7, step 6 resulting solution is filtered, obtains black powder；Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when, resulting materials be nitrating carbon aerogels absorption lithium sulfur battery anode material.The method of the present invention synthetic method is simple, cost-effective, favorable reproducibility, suitable for merchandized handling.
Description
Technical field
The present invention relates to cell positive material preparation method technical field, and in particular to a kind of lithium sulfur battery anode material
Preparation method.
Background technology
The features such as lithium-sulfur cell relies on its cost-effective, specific energy density is high, environmentally friendly, it is considered to be a kind of new
Energy storage device, apply in the fields such as movable equipment, large-scale electric equipment, space flight and aviation and electric/hybrid automobile.
This secondary lithium-sulfur battery is using sulphur simple substance as cathode, using lithium metal as anode, is carried by the way that chemical reaction occurs between lithium and sulphur
For energy.When sulphur and lithium react completely, its theory is up to 1680mAh/g than energy, is 3~5 times of traditional lithium battery, can be with
The fully demand of reply high power capacity fast charge electrical equipment.However, the serious shadow of characteristic of lithium sulfur battery anode material sulphur poorly conductive
The chemical property of battery has been rung, has caused battery capacity to reduce, and the presence of shuttle effect then result in battery capacity conservation rate
Low, poor circulation and serious curtailment battery life, influence the security of battery.
The conventional carbon material specific surface area such as conductive black is smaller, and absorption property is general, carbon nanotubes, the carbon material such as graphene
Expensive, synthesis technique is complicated.For carbon aerogels as a kind of new carbon material, specific surface area is big, has abundant hole knot
Structure, absorption property is good, and effectively compound, the dissolving of reduction long-chain polysulfide lithium can be carried out to the cathode sulphur of lithium-sulfur cell, so that
Suppress the generation of shuttle effect.
The content of the invention
The object of the present invention is to provide a kind of preparation method of lithium sulfur battery anode material, lithium-sulfur cell the method increase
Specific discharge capacity, improve the cycle performance of lithium sulfur battery anode material.
The technical solution adopted in the present invention is a kind of preparation method of lithium sulfur battery anode material, it is characterised in that bag
Include following steps：
Step 1, resorcinol, furfural and methenamine are added in solvent successively and mixed, when stirring 1-3 is small；
Step 2, step 1 resulting solution is sealed to heat treatment at 80 DEG C -120 DEG C and obtains gel in -7 days 3 days；
Step 3, step 2 gained gel is heat-treated at 60 DEG C -100 DEG C 1 it is small when -5 it is small when, it is quiet at 25 DEG C -50 DEG C
Put 24 it is small when -48 it is small when, obtain xerogel；
Step 4, step 3 gained xerogel is crushed, it is small that gained powder leads to nitrogen heat treatment 2 at 900 DEG C -1200 DEG C
When -6 it is small when, that is, obtain nitrogen-doped carbon aeroge；
Step 5, successively by mass fraction be 37% hydrochloric acid, hypo, dispersant and step 4 gained carbon
Aeroge is added in distilled water, stirring 24 it is small when -48 it is small when；
Step 6, it is step 5 gained suspension is 20 minutes ultrasonic；
Step 7, step 6 resulting solution is filtered 3 times -6 times, obtains black powder；
Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when, resulting materials are nitrating carbon airsetting
The lithium sulfur battery anode material of glue absorption.
The features of the present invention also resides in,
Solvent described in step 1 is one kind in methanol, ethanol or isopropanol.
In step 1, the resorcinol containing 9g-15g, the furfural and 0.25- of 14ml-24ml in the solvent per 100ml
The methenamine of 1.5g.
In step 5, per 100ml distilled water in the mass fraction containing 1.98g-11.83g be 37% hydrochloric acid,
The hypo of 2.41g-14.47g, the carbon aerogels of 0.2g-0.6g, the dispersant of 1ml-5ml.
Dispersant described in step 5 for polyethylene glycol -200, polyethylene glycol-400, polyethylene glycol -600, polyethylene glycol -
800 or polyethylene glycol-1000 in one kind.
A kind of preparation method of lithium sulfur battery anode material of the present invention has the beneficial effect that：With conventional lithium-sulphur cell positive electrode
Material is compared, and for the material while discharge capacity increase, still with good cyclical stability, and synthetic method is simple
It is single, cost-effective, favorable reproducibility, suitable for merchandized handling.
Embodiment
With reference to embodiment, the present invention is described in detail.
A kind of preparation method of lithium sulfur battery anode material of the present invention, includes following steps：
Step 1, resorcinol, furfural and methenamine are added in solvent successively and mixed, when stirring 1-3 is small；
Solvent described in step 1 is one kind in methanol, ethanol or isopropanol；
In step 1, the resorcinol containing 9g-15g, the furfural and 0.25- of 14ml-24ml in the solvent per 100ml
The methenamine of 1.5g；
Step 2, step 1 resulting solution is sealed to heat treatment at 80 DEG C -120 DEG C and obtains gel in -7 days 3 days；
Step 3, step 2 gained gel is heat-treated at 60 DEG C -100 DEG C 1 it is small when -5 it is small when, it is quiet at 25 DEG C -50 DEG C
Put 24 it is small when -48 it is small when, obtain xerogel；
Step 4, step 3 gained xerogel is crushed, it is small that gained powder leads to nitrogen heat treatment 2 at 900 DEG C -1200 DEG C
When -6 it is small when, that is, obtain nitrogen-doped carbon aeroge；
Step 5, successively by mass fraction be 37% hydrochloric acid, hypo, dispersant and step 4 gained carbon
Aeroge is added in distilled water, stirring 24 it is small when -48 it is small when；
In step 5, per 100ml distilled water in the mass fraction containing 1.98g-11.83g be 37% hydrochloric acid,
The hypo of 2.41g-14.47g, the carbon aerogels of 0.2g-0.6g, the dispersant of 1ml-5ml；
Dispersant described in step 5 for polyethylene glycol -200, polyethylene glycol-400, polyethylene glycol -600, polyethylene glycol -
800 or polyethylene glycol-1000 in one kind；
Step 6, it is step 5 gained suspension is 20 minutes ultrasonic with 100Hz power, 25 DEG C of temperature；
Step 7, step 6 resulting solution is filtered 3 times -6 times, obtains black powder；
Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when, resulting materials are nitrating carbon airsetting
The lithium sulfur battery anode material of glue absorption.
Wherein raw materials used purity is：Resorcinol, analysis are pure；Furfural, analysis are pure；Methanol, analysis are pure；Ethanol, point
Analyse pure；Isopropanol, analysis are pure；Methenamine, analysis are pure；Hydrochloric acid, analysis are pure；Hypo, analysis are pure；Poly- second two
Alcohol -200, analysis are pure；Polyethylene glycol-400, analysis are pure；Polyethylene glycol -600, analysis are pure；Polyethylene glycol-8 00, analysis are pure；It is poly-
Ethylene glycol -1000, analysis are pure.
Embodiment 1
Step 1, resorcinol, furfural and methenamine are added in methanol successively and mixed, when stirring 1 is small, wherein often
The methenamine of resorcinol containing 9g, the furfural of 14ml and 0.25g in the methanol of 100ml；
Step 2, step 1 resulting solution is sealed to heat treatment 7 days at 80 DEG C；
Step 3, step 2 gained gel is heat-treated at 60 DEG C 5 it is small when, at 25 DEG C stand 48 it is small when；
Step 4, by step 3 gained xerogel crush, gained powder at 900 DEG C lead to nitrogen heat treatment 6 it is small when；
Step 5, successively by mass fraction be 37% hydrochloric acid, hypo, polyethylene glycol -200 and step 4
Gained carbon aerogels are added in distilled water, when stirring 24 is small, wherein the quality containing 1.98g point in the distilled water of every 100ml
Hydrochloric acid, hypo, the carbon aerogels of 0.2g of 2.41g of the number for 37%, the polyethylene glycol -200 of 1ml；
Step 6, it is step 5 gained suspension is 20 minutes ultrasonic with 100Hz power, 25 DEG C of temperature；
Step 7, step 6 resulting solution is filtered 3 times；
Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when.
Embodiment 2
Step 1, resorcinol, furfural and methenamine are added in ethanol successively and mixed, when stirring 3 is small, wherein often
The methenamine of resorcinol containing 15g, the furfural of 24ml and 1.5g in the ethanol of 100ml；
Step 2, step 1 resulting solution is sealed to heat treatment 3 days at 120 DEG C；
Step 3, step 2 gained gel is heat-treated at 100 DEG C 1 it is small when, at 50 DEG C stand 24 it is small when；
Step 4, step 3 gained xerogel is crushed, gained powder leads to nitrogen heat treatment hour at 1200 DEG C；
Step 5, successively by mass fraction be 37% hydrochloric acid, hypo, polyethylene glycol-400 and step 4
Gained carbon aerogels are added in distilled water, when stirring 48 is small, wherein the quality containing 11.83g point in the distilled water of every 100ml
Hydrochloric acid, hypo, the carbon aerogels of 0.2g of 14.47g of the number for 37%, the polyethylene glycol-400 of 5ml；
Step 6, it is step 5 gained suspension is 20 minutes ultrasonic with 100Hz power, 25 DEG C of temperature；
Step 7, step 6 resulting solution is filtered 6 times；
Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when.
Embodiment 3
Step 1, resorcinol, furfural and methenamine are added in isopropanol successively and mixed, when stirring 1.5 is small, its
In per 100ml isopropanol in the resorcinol containing 9g, the furfural of 14ml and 0.7g methenamine；
Step 2, step 1 resulting solution is sealed to heat treatment 5 days at 10 DEG C；
Step 3, step 2 gained gel is heat-treated at 80 DEG C 3 it is small when, at 40 DEG C stand 36 it is small when；
Step 4, by step 3 gained xerogel crush, gained powder at 1000 DEG C lead to nitrogen heat treatment 4 it is small when；
Step 5, successively by mass fraction be 37% hydrochloric acid, hypo, polyethylene glycol -600 and step 4
Gained carbon aerogels are added in distilled water, when stirring 48 is small, wherein the quality containing 11.83g point in the distilled water of every 100ml
Hydrochloric acid, hypo, the carbon aerogels of 0.6g of 14.47g of the number for 37%, the polyethylene glycol -600 of 3ml；
Step 6, it is step 5 gained suspension is 20 minutes ultrasonic with 100Hz power, 25 DEG C of temperature；
Step 7, step 6 resulting solution is filtered 5 times；
Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when.
Embodiment 4
Step 1, resorcinol, furfural and methenamine are added in methanol successively and mixed, when stirring 2 is small, wherein often
The methenamine of resorcinol containing 15g, the furfural of 18ml and 0.95g in the methanol of 100ml；
Step 2, step 1 resulting solution is sealed to heat treatment 3 days at 120 DEG C；
Step 3, step 2 gained gel is heat-treated at 80 DEG C 4 it is small when, at 25 DEG C stand 24 it is small when；
Step 4, by step 3 gained xerogel crush, gained powder at 1100 DEG C lead to nitrogen heat treatment 4 it is small when；
Step 5, successively by mass fraction be 37% hydrochloric acid, hypo, polyethylene glycol-8 00 and step 4
Gained carbon aerogels are added in distilled water, when stirring 36 is small, wherein the quality containing 1.98g point in the distilled water of every 100ml
Hydrochloric acid, hypo, the carbon aerogels of 0.6g of 2.41g of the number for 37%, the polyethylene glycol-8 00 of 2ml；
Step 6, it is step 5 gained suspension is 20 minutes ultrasonic with 100Hz power, 25 DEG C of temperature；
Step 7, step 6 resulting solution is filtered 4 times；
Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when.
Embodiment 5
Step 1, resorcinol, furfural and methenamine are added in ethanol successively and mixed, when stirring 2.5 is small, wherein
The methenamine of resorcinol containing 12g, the furfural of 20ml and 1g in ethanol per 100ml；
Step 2, step 1 resulting solution is sealed to heat treatment 6 days at 1100 DEG C；
Step 3, step 2 gained gel is heat-treated at 90 DEG C 4 it is small when, at 25 DEG C stand 24 it is small when；
Step 4, by step 3 gained xerogel crush, gained powder at 1200 DEG C lead to nitrogen heat treatment 2 it is small when；
Step 5, successively by mass fraction be 37% hydrochloric acid, hypo, polyethylene glycol-1000 and step
4 gained carbon aerogels are added in distilled water, when stirring 48 is small, wherein the mass fraction containing 10g in the distilled water of every 100ml
Hypo, the carbon aerogels of 0.4g of hydrochloric acid, 12g for 37%, the polyethylene glycol-1000 of 3.5ml；
Step 6, it is step 5 gained suspension is 20 minutes ultrasonic with 100Hz power, 25 DEG C of temperature；
Step 7, step 6 resulting solution is filtered 4 times；
Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when.
Embodiment 6
Step 1, resorcinol, furfural and methenamine are added in isopropanol successively and mixed, when stirring 1 is small, wherein
The methenamine of resorcinol containing 13g, the furfural of 22ml and 0.8g in isopropanol per 100ml；
Step 2, step 1 resulting solution is sealed to heat treatment 3.5 days at 105 DEG C；
Step 3, step 2 gained gel is heat-treated at 90 DEG C 3.5 it is small when, at 25 DEG C stand 24 it is small when；
Step 4, by step 3 gained xerogel crush, gained powder at 1000 DEG C lead to nitrogen heat treatment 4.5 it is small when；
Step 5, successively by mass fraction be 37% hydrochloric acid, hypo, polyethylene glycol-1000 and step
4 gained carbon aerogels are added in distilled water, when stirring 30 is small, wherein the quality containing 4.65g point in the distilled water of every 100ml
Hydrochloric acid, hypo, the carbon aerogels of 0.5g of 10g of the number for 37%, the polyethylene glycol-1000 of 2ml；
Step 6, it is step 5 gained suspension is 20 minutes ultrasonic with 100Hz power, 25 DEG C of temperature；
Step 7, step 6 resulting solution is filtered 4 times；
Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when.
Embodiment 7
Step 1, resorcinol, furfural and methenamine are added in methanol successively and mixed, when stirring 3 is small, wherein often
The methenamine of resorcinol containing 14g, the furfural of 19ml and 1.25g in the methanol of 100ml；
Step 2, step 1 resulting solution is sealed to heat treatment 6.5 days at 85 DEG C；
Step 3, step 2 gained gel is heat-treated at 100 DEG C 5 it is small when, at 60 DEG C handle 5 it is small when, at 25 DEG C
Stand 24 it is small when；
Step 4, by step 3 gained xerogel crush, gained powder at 900 DEG C lead to nitrogen heat treatment 3 it is small when；
Step 5, successively by mass fraction be 37% hydrochloric acid, hypo, polyethylene glycol-400 and step 4
Gained carbon aerogels are added in distilled water, when stirring 29 is small, wherein the quality containing 3.96g point in the distilled water of every 100ml
Hydrochloric acid, hypo, the carbon aerogels of 0.35g of 4.47g of the number for 37%, the polyethylene glycol-400 of 2ml；
Step 6, it is step 5 gained suspension is 20 minutes ultrasonic with 100Hz power, 25 DEG C of temperature；
Step 7, step 6 resulting solution is filtered 4 times；
Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when.
Embodiment 8
Step 1, resorcinol, furfural and methenamine are added in ethanol successively and mixed, when stirring 1.8 is small, wherein
The methenamine of resorcinol containing 9g, the furfural of 14ml and 0.25g in ethanol per 100ml；
Step 2, step 1 resulting solution is sealed to heat treatment 7 days at 97 DEG C；
Step 3, step 2 gained gel is handled at 63 DEG C 5 it is small when, at 28 DEG C stand 27 it is small when；
Step 4, by step 3 gained xerogel crush, gained powder at 930 DEG C lead to nitrogen heat treatment 6 it is small when；
Step 5, successively by mass fraction be 37% hydrochloric acid, hypo, polyethylene glycol-1000 and step
4 gained carbon aerogels are added in distilled water, when stirring 48 is small, wherein the mass fraction containing 10g in the distilled water of every 100ml
Hypo, the carbon aerogels of 0.4g of hydrochloric acid, 12g for 37%, the polyethylene glycol-1000 of 3.5ml；
Step 6, it is step 5 gained suspension is 20 minutes ultrasonic with 100Hz power, 25 DEG C of temperature；
Step 7, step 6 resulting solution is filtered 3 times；
Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when.
Embodiment 9
Step 1, resorcinol, furfural and methenamine are added in isopropanol successively and mixed, when stirring 2.4 is small, its
In per 100ml isopropanol in the resorcinol containing 14g, the furfural of 24ml and 1.45g methenamine；
Step 2, step 1 resulting solution is sealed to heat treatment 7 days at 94 DEG C；
Step 3, step 2 gained gel is heat-treated at 92 DEG C 2.5 it is small when, at 25 DEG C stand 24 it is small when；
Step 4, by step 3 gained xerogel crush, gained powder at 1100 DEG C lead to nitrogen heat treatment 4 it is small when；
Step 5, successively by mass fraction be 37% hydrochloric acid, hypo, polyethylene glycol -600 and step 4
Gained carbon aerogels are added in distilled water, when stirring 27 is small, wherein the quality containing 7.63g point in the distilled water of every 100ml
Hydrochloric acid, hypo, the carbon aerogels of 0.52g of 11.45g of the number for 37%, the polyethylene glycol -600 of 3.9ml；
Step 6, it is step 5 gained suspension is 20 minutes ultrasonic with 100Hz power, 25 DEG C of temperature；
Step 7, step 6 resulting solution is filtered 3 times；
Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when.
Embodiment 10
Step 1, resorcinol, furfural and methenamine are added in isopropanol successively and mixed, when stirring 3 is small, wherein
The methenamine of resorcinol containing 15g, the furfural of 24ml and 1.09g in isopropanol per 100ml；
Step 2, step 1 resulting solution is sealed to heat treatment 6 days at 70 DEG C；
Step 3, step 2 gained gel is heat-treated at 70 DEG C 4 it is small when, at 25 DEG C stand 48 it is small when；
Step 4, by step 3 gained xerogel crush, gained powder at 1000 DEG C lead to nitrogen heat treatment 5 it is small when；
Step 5, successively by mass fraction be 37% hydrochloric acid, hypo, polyethylene glycol-8 00 and step 4
Gained carbon aerogels are added in distilled water, when stirring 48 is small, wherein the quality containing 6.93g point in the distilled water of every 100ml
Hydrochloric acid, hypo, the carbon aerogels of 0.36g of 10.72g of the number for 37%, the polyethylene glycol-8 00 of 1ml；
Step 6, it is step 5 gained suspension is 20 minutes ultrasonic with 100Hz power, 25 DEG C of temperature；
Step 7, step 6 resulting solution is filtered 4 times；
Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when.
Embodiment 11
Step 1, resorcinol, furfural and methenamine are added in ethanol successively and mixed, when stirring 1.7 is small, wherein
The methenamine of resorcinol containing 9g, the furfural of 14ml and 0.33g in ethanol per 100ml；
Step 2, step 1 resulting solution is sealed to heat treatment 5 days at 95 DEG C；
Step 3, when step 2 gained gel being handled 4 at 88 DEG C, when standing 24 is small at 47 DEG C；
Step 4, by step 3 gained xerogel crush, gained powder at 900 DEG C lead to nitrogen heat treatment 6 it is small when；
Step 5, successively by mass fraction be 37% hydrochloric acid, hypo, polyethylene glycol -200 and step 4
Gained carbon aerogels are added in distilled water, when stirring 40 is small, wherein the quality containing 4.62g point in the distilled water of every 100ml
Hydrochloric acid, hypo, the carbon aerogels of 0.4g of 9.83g of the number for 37%, the polyethylene glycol -200 of 4.4ml；
Step 6, it is step 5 gained suspension is 20 minutes ultrasonic with 100Hz power, 25 DEG C of temperature；
Step 7, step 6 resulting solution is filtered 6 times；
Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when.
Embodiment 12
Step 1, resorcinol, furfural and methenamine are added in methanol successively and mixed, when stirring 1 is small, wherein often
The methenamine of resorcinol containing 13g, the furfural of 17ml and 0.75g in the methanol of 100ml；
Step 2, step 1 resulting solution is sealed to heat treatment 4 days at 110 DEG C；
Step 3, step 2 gained gel is heat-treated at 100 DEG C 3 it is small when, at 25 DEG C stand 24 it is small when；
Step 4, by step 3 gained xerogel crush, gained powder at 900 DEG C lead to nitrogen heat treatment 6 it is small when；
Step 5, successively by mass fraction be 37% hydrochloric acid, hypo, polyethylene glycol -200 and step 4
Gained carbon aerogels are added in distilled water, when stirring 48 is small, wherein the mass fraction containing 5g is in the distilled water of every 100ml
37% hydrochloric acid, the hypo of 11g, the carbon aerogels of 0.35g, the polyethylene glycol -200 of 2ml；
Step 6, it is step 5 gained suspension is 20 minutes ultrasonic with 100Hz power, 25 DEG C of temperature；
Step 7, step 6 resulting solution is filtered 3 times；
Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when.
Sulphur powder is stablized with the various embodiments described above using the chemical property and high voltage cycle of button cell test sample
Property, sample segment result see the table below：
Test result is as follows：Choose sulphur powder, embodiment 1,2,6,10
From upper table as it can be seen that being obviously improved in specific discharge capacity using lithium sulfur battery anode material provided by the invention
Under the conditions of, cyclical stability has also obtained significant raising, and it is effective to illustrate this lithium sulfur battery anode material.
A kind of preparation method of lithium sulfur battery anode material of the present invention has the following advantages：With conventional lithium-sulphur cell positive electrode material
Material is compared, and for the material while discharge capacity increase, still with good cyclical stability, and synthetic method is simple,
It is cost-effective, favorable reproducibility, suitable for merchandized handling.
Claims (5)
1. a kind of preparation method of lithium sulfur battery anode material, it is characterised in that comprise the following steps：
Step 1, resorcinol, furfural and methenamine are added in solvent successively and mixed, when stirring 1-3 is small；
Step 2, step 1 resulting solution is sealed to heat treatment at 80 DEG C -120 DEG C and obtains gel in -7 days 3 days；
Step 3, step 2 gained gel is heat-treated at 60 DEG C -100 DEG C 1 it is small when -5 it is small when, stand 24 at 25 DEG C -50 DEG C
When hour -48 is small, xerogel is obtained；
Step 4, step 3 gained xerogel is crushed, gained powder lead at 900 DEG C -1200 DEG C nitrogen heat treatment 2 it is small when it is -6 small
When, that is, obtain nitrogen-doped carbon aeroge；
Step 5, successively by mass fraction be 37% hydrochloric acid, hypo, dispersant and step 4 gained carbon airsetting
Glue is added in distilled water, stirring 24 it is small when -48 it is small when；
Step 6, it is step 5 gained suspension is 20 minutes ultrasonic；
Step 7, step 6 resulting solution is filtered 3 times -6 times, obtains black powder；
Step 8, step 7 gained black powder is heat-treated at 155 DEG C 24 it is small when, resulting materials be nitrating carbon aerogels inhale
Attached lithium sulfur battery anode material.
A kind of 2. preparation method of lithium sulfur battery anode material according to claim 1, it is characterised in that institute in step 1
Solvent is stated as one kind in methanol, ethanol or isopropanol.
3. the preparation method of a kind of lithium sulfur battery anode material according to claim 1, it is characterised in that in step 1, often
The methenamine of resorcinol containing 9g-15g, the furfural of 14ml-24ml and 0.25-1.5g in the solvent of 100ml.
4. the preparation method of a kind of lithium sulfur battery anode material according to claim 1, it is characterised in that in step 5, often
In the distilled water of 100ml the mass fraction containing 1.98g-11.83g be 37% hydrochloric acid, 2.41g-14.47g five hydration sulphur
The carbon aerogels of sodium thiosulfate, 0.2g-0.6g, the dispersant of 1ml-5ml.
A kind of 5. preparation method of lithium sulfur battery anode material according to claim 1, it is characterised in that institute in step 5
It is polyethylene glycol -200, polyethylene glycol-400, polyethylene glycol -600, polyethylene glycol-8 00 or polyethylene glycol-1000 to state dispersant
In one kind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711091916.2A CN108039457A (en) | 2017-11-08 | 2017-11-08 | A kind of preparation method of lithium sulfur battery anode material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711091916.2A CN108039457A (en) | 2017-11-08 | 2017-11-08 | A kind of preparation method of lithium sulfur battery anode material |
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