CN101831185B - Modified emulsified bitumen and preparation method thereof - Google Patents
Modified emulsified bitumen and preparation method thereof Download PDFInfo
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- CN101831185B CN101831185B CN201010144937A CN201010144937A CN101831185B CN 101831185 B CN101831185 B CN 101831185B CN 201010144937 A CN201010144937 A CN 201010144937A CN 201010144937 A CN201010144937 A CN 201010144937A CN 101831185 B CN101831185 B CN 101831185B
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses modified emulsified bitumen and a preparation method thereof in order to improve the property of a lithium ion battery. The modified emulsified bitumen comprises the following components in percentage by mass: 20%-70% of bitumen, 0.1-5% of emulsifier, 0%-0.1% of stabilizer and the balance of water. The preparation method comprises the steps of: heating the bitumen for softening; and preparing the emulsifier and the water into a soap liquid; adding 20%-70% of bitumen liquid and the soap liquid at the same time to obtain the modified emulsified bitumen at 50-80 DEG C under 2000-10000prm. Compared with the prior art, in the invention, the modified emulsified bitumen is used for the surface modifying and doping of the positive and negative pole materials of the lithium ion battery, and the modified lithium ion battery material obtains improved compaction ratio and specific capacity. In addition, the modified emulsified bitumen can greatly improve energy density of the negative pole material and obtain good electrochemical property when applied to the lithium ion batteries, in particular to the negative pole materials of the lithium ion batteries.
Description
Technical field
The present invention relates to properties-correcting agent of a kind of cell negative electrode material and preparation method thereof, particularly asphalt modifier of a kind of lithium ion battery negative material and preparation method thereof.
Background technology
With emulsified bitumen or modified emulsifying asphalt is the slurry seal constructional method of bond, is widely used on the road surface of different grades.But be applied in the modification aspect of lithium ion battery material, also do not meet and report for work.Along with the development of lithium ion battery material, adopt properties-correcting agent that lithium ion battery material is carried out modification, can improve the electrical property of lithium ion battery greatly.
Summary of the invention
The purpose of this invention is to provide a kind of modified emulsifying asphalt and preparation method thereof, the technical problem that solve is the performance of lithium ion battery.
The present invention adopts following technical scheme: a kind of modified emulsifying asphalt, and said modified emulsifying asphalt is grouped into by the one-tenth of following mass ratio: the pitch solid content is 20%-70%, and emulsifier content is 0.1%-5%, and the content of stablizer is 0%-0.1%, and all the other are water.
A kind of preparation method of modified emulsifying asphalt may further comprise the steps: one, pitch is warmed up to 120-250 ℃, thermoplastic 2-6h with the heat-up rate of 5 ℃/min; Two, press mass ratio with emulsifying agent 0.1%-5% and water, under rotating speed 600prm, 50-80 ℃ condition, stir 5-12min, regulate acidity-basicity ph then and be: 2.0-3.0, process soap lye; Three, by mass ratio asphaltic liquid 20%-70% and soap after softening are added simultaneously, at rotating speed 2000-10000prm, stator, rotor clearance are less than 2.5mm; Under emulsifying temperature 50-80 ℃ the condition; Obtain modified emulsifying asphalt, modified emulsifying asphalt is grouped into by the one-tenth of following mass ratio: the pitch solid content is 20%-70%, and emulsifier content is 0.1%-5.0%; The content of stablizer is 0%-0.1%, and all the other are water.
After the method pitch of the present invention thermoplastic, and sieve with 20 eye mesh screens.
Method of the present invention is pressed mass ratio with emulsifying agent and water, behind the stirring 0.5-2h, becomes clear solution.
Method of the present invention is regulated potential of hydrogen and is adopted stablizer.
Method adjusting potential of hydrogen of the present invention adds stablizer by the mass ratio of total amount greater than 0 to 0.1%.
Method pitch of the present invention is coal tar pitch, petroleum pitch or rock asphalt.
Method emulsifying agent of the present invention is anionic emulsifier, cationic emulsifier or zwitter-ion emulsifying agent; Said anionic emulsifier is more than one of carboxylate salt, vitriol and sulphonate; Cationic emulsifier is the verivate or the ammonium salt of amine; The zwitter-ion emulsifying agent is polyethenoxy ether class or polyoxypropylene ethers.
Method carboxylate salt of the present invention is soap C15～17H31～35CO2Na, Triple Pressed Stearic Acid sodium salt C17H35CO2Na; Said vitriol is sodium lauryl sulphate salt C12H25OSO3Na; Said sulphonate is calcium salt of dodecylbenzene sulfonate; The verivate of said amine is many ammoniums amides: N.N-double hydroxyethyl alkylamide C11H23CON (CH2CH2OH) 2, SEPIGEL 305 [CH2-CH (CONH2)] n-; This quality class: sodium lignosulfonate; Organic halogenation ammonium class: palmityl trimethyl ammonium chloride C16H33 (CH3) 3NCl, two (octadecyl) alkyl dimethyl ammonium chloride; Said ammonium salt is quaternary ammonium salt DTAC C12H25 (CH3) 3NCl; Said polyethenoxy ether class is: octyl phenol polyoxy ethene C8H17-C6H4-O-(CH2CH2O) 10H, isomerous tridecanol polyoxyethylene ether RO (CH2CH2O) 5H R, hexadecanol Soxylat A 25-7; Said polyoxypropylene ethers is: bisphenol-A polyethenoxy ether C15H16O2. (C3H6O) n, polyoxyethylene polyoxypropylene tetramethylolmethane ether C [CH2O (C3H6O) n (C3H6O) mH] 4.
Method stablizer of the present invention is more than one in muriate, acid and the macromolecule organic; Said muriate is sodium-chlor, Repone K, calcium chloride and magnesium chloride; Said acid is hydrochloric acid, phosphoric acid and nitric acid; Said macromolecule organic is Z 150PH, CMC 99.5 and Xylo-Mucine.
The present invention compared with prior art; With modified emulsifying asphalt lithium ion battery positive and negative electrode material is carried out surface-treated or doping, the lithium ion battery material after the modification improves compacting ratio and specific storage; Be applied in the lithium ion battery; Particularly, can improve the negative material energy density greatly, have good chemical property as the surface-modifying agent of lithium ion battery negative material.
Embodiment
Below in conjunction with embodiment the present invention is done further explain.Modified emulsifying asphalt of the present invention, be grouped into by the one-tenth of following mass ratio: the pitch solid content is 20%-70%, and emulsifier content is 0.1%-5.0%, and the content of stablizer is 0%-0.1%, and all the other are water.
Pitch is coal tar pitch, petroleum pitch or rock asphalt.
Emulsifying agent is anionic emulsifier, cationic emulsifier or zwitter-ion emulsifying agent.
Anionic emulsifier is carboxylate salt, vitriol or sulphonate.Carboxylate salt is soap C15～17H31～35CO2Na, Triple Pressed Stearic Acid sodium salt C17H35CO2Na.Vitriol is sodium lauryl sulphate salt C12H25OSO3Na.Sulphonate is calcium salt of dodecylbenzene sulfonate.
Cationic emulsifier is the verivate or the ammonium salt of amine.The verivate of amine is many ammoniums amides: N.N-double hydroxyethyl alkylamide C11H23CON (CH2CH2OH) 2, SEPIGEL 305 [CH2-CH (CONH2)] n-; This quality class: sodium lignosulfonate; Organic halogenation ammonium class: palmityl trimethyl ammonium chloride C16H33 (CH3) 3NCl, two (octadecyl) alkyl dimethyl ammonium chloride.Ammonium salt is quaternary ammonium salt DTAC C12H25 (CH3) 3NCl.
The zwitter-ion emulsifying agent is polyethenoxy ether class or polyoxypropylene ethers.Polyethenoxy ether class is: octyl phenol polyoxy ethene C8H17-C6H4-O-(CH2CH2O) 10H, isomerous tridecanol polyoxyethylene ether RO (CH2CH2O) 5H R, hexadecanol Soxylat A 25-7.The polyoxypropylene ethers is: bisphenol-A polyethenoxy ether C15H16O2. (C3H6O) n, polyoxyethylene polyoxypropylene tetramethylolmethane ether C [CH2O (C3H6O) n (C3H6O) mH] 4.
Stablizer is more than one in muriate, acid and the macromolecule organic.Muriate is sodium-chlor, Repone K, calcium chloride and magnesium chloride.Acid is hydrochloric acid, phosphoric acid and nitric acid.Macromolecule organic is Z 150PH, CMC 99.5 and Xylo-Mucine.
The preparation method of modified emulsifying asphalt of the present invention may further comprise the steps: one, pitch is warmed up to 120-250 ℃ with the heat-up rate of 1-7 ℃/min, thermoplastic 2-6h makes pitch have certain fluidity, and sieves with 20 eye mesh screens; Two, press mass ratio with emulsifying agent 0.1%-5.0% and water, under rotating speed 200-1000prm, 50-95 ℃ condition, stir 5-12min; Make it fully be dissolved into clear solution; Press mass ratio 0%-0.1% then and add stablizer, the adjusting acidity-basicity ph is: 2.0-3.0, process soap lye; Three, by mass ratio asphaltic liquid 20%-70% and soap after softening are added simultaneously; At rotating speed 2000-10000prm, stator, rotor clearance are less than 2.5mm, under emulsifying temperature 50-80 ℃ the condition; Obtain being grouped into modified emulsifying asphalt by the one-tenth of following mass ratio: the pitch solid content is 20%-70%; Emulsifier content is 0.1%-5%, and the content of stablizer is 0%-0.1%, and all the other are water.
For obtaining good emulsifying effectiveness, through 1 to 3 colloidal mill, the rotating speed 2000-15000prm of each colloidal mill, stator, rotor clearance be less than 2.5mm with the pitch after softening and soap lye, emulsifying temperature 50-95 ℃.
The pitch that method of the present invention adopts is coal tar pitch, petroleum pitch or rock asphalt, comprises modifying asphalt, and road bitumen is 30
#-160
#Pitch.The bituminous softening temperature is 30-120 ℃, and penetration degree (asphaltpenetration, in 25 ℃ and 5 second time, under the loading of 100g, the standard round cone vertically penetrates the degree of depth of pitch sample, is unit with 1/10mm) is 30-130.
The emulsifying agent that method of the present invention adopts can form film or electrostatic double layer on the surface of dispersoid, makes disperse phase have electric charge, can stop the small droplets of disperse phase to condense mutually like this, makes the emulsion of formation more stable.Emulsifying agent is anionic emulsifier, cationic emulsifier or zwitter-ion emulsifying agent.
Anionic emulsifier can be in water ionization generate the negative ion hydrophilic radical that has alkyl or aryl, be more than one of carboxylate salt, vitriol and sulphonate.Carboxylate salt is soap C15～17H31～35CO2Na, Triple Pressed Stearic Acid sodium salt C17H35CO2Na.Vitriol is sodium lauryl sulphate salt C12H25OSO3Na.Sulphonate is calcium salt of dodecylbenzene sulfonate.
Cationic emulsifier is the verivate or the ammonium salt of amine for ionization in water generates the positive ion hydrophilic radical that has alkyl or aryl.The verivate of amine is many ammoniums amides: N.N-double hydroxyethyl alkylamide C11H23CON (CH2CH2OH) 2, SEPIGEL 305 [CH2-CH (CONH2)] n-; This quality class: sodium lignosulfonate; Organic halogenation ammonium class: palmityl trimethyl ammonium chloride C16H33 (CH3) 3NCl, two (octadecyl) alkyl dimethyl ammonium chloride.Ammonium salt is quaternary ammonium salt DTAC C12H25 (CH3) 3NCl.
The unionization in water of zwitter-ion emulsifying agent, its hydrophilic segment are various polar groups, are polyethenoxy ether class or polyoxypropylene ethers.Polyethenoxy ether class is: octyl phenol polyoxy ethene C8H17-C6H4-O-(CH2CH2O) 10H, isomerous tridecanol polyoxyethylene ether RO (CH2CH2O) 5H R, hexadecanol Soxylat A 25-7.The polyoxypropylene ethers is: bisphenol-A polyethenoxy ether C15H16O2. (C3H6O) n, polyoxyethylene polyoxypropylene tetramethylolmethane ether C [CH2O (C3H6O) n (C3H6O) mH] 4.
The stablizer that method of the present invention adopts is more than one in muriate, acid and the macromolecule organic.Muriate is sodium-chlor, Repone K, calcium chloride and magnesium chloride.Acid is hydrochloric acid, phosphoric acid and nitric acid.Macromolecule organic is Z 150PH, CMC 99.5 and Xylo-Mucine.
Method of the present invention makes modified emulsifying asphalt be not easy breakdown of emulsion through regulating acidity and adding stablizer.Modified emulsifying asphalt is applied in phosphoric acid salt positive pole, silicate anodal, lithium titanate anode as carbon source material, in the modification of the composite negative pole material of the composite negative pole of silicon and charcoal, charcoal negative pole or charcoal, increases the electroconductibility of material, improves the charge-discharge characteristic of material.
Adopt solid content, residue, the stability property of SH/T0099-2005 emulsified bitumen testing method check modified emulsifying asphalt.
Embodiment 1 (anionic emulsifier)
Get 30% 30# pitch by the mass ratio of final product and heat up with the heat-up rate of 5 ℃/min and in 210 ℃ baking oven, heat, softening 3 hours, 20 eye mesh screens sieved.The emulsifying agent of adding 1% in 68.95% pure water, water temperature is 90 ℃, and emulsifying agent is 1: 1 X 2073 of mass ratio and StNa, and rotating speed 600prm stirs 5min, is uniformly dispersed, and adds 0.02% MgCl
2Stablizer is regulated acidity to 2.0-3.0 with nitric acid 0.03%, and is stirred, and makes soap lye.With the pitch after softening and soap lye in proportion 30: 70 ratio pass through 1 colloidal mill, stator, rotor clearance be less than 2.5mm, the rotating speed 8000rpm of each colloidal mill, emulsifying temperature is 60 ℃, obtains the lithium ion material and uses modified emulsifying asphalt.Adopting the solid content of SH/T0099-2005 emulsified bitumen testing method check modified emulsifying asphalt is 30%.
Embodiment 2 (cationic emulsifier)
Get 70% 70# pitch and heat in 180 ℃ baking oven with the heat-up rate of 5 ℃/min, roasting softening 2 hours, 20 eye mesh screens sieved.29.73% pure water in add 0.2% emulsifying agent, water temperature is 50 ℃, emulsifying agent is two (octadecyl) alkyl dimethyl ammonium chloride; Rotating speed 600prm stirs 10min, is uniformly dispersed; The CMC 99.5 stablizer of adding 0.03%; Regulate acidity to 2.0-3.0 with hydrochloric acid 0.04%, stir, make soap lye.With the pitch after softening and soap lye in proportion 70: 30 ratio pass through 2 colloidal mills, stator, rotor clearance be less than 2.5mm, the rotating speed 5000rpm of each colloidal mill, emulsifying temperature is 50 ℃, obtains the lithium ion material and uses modified emulsifying asphalt.Adopting the solid content of SH/T0099-2005 emulsified bitumen testing method check modified emulsifying asphalt is 70%.
Embodiment 3 (zwitter-ion emulsifying agent)
Get 50% 130# pitch and heat in 120 ℃ baking oven with the heat-up rate of 5 ℃/min, softening 6 hours, 20 eye mesh screens sieved.The emulsifying agent of adding 0.4% in 49.525% pure water, water temperature is 60 ℃, emulsifying agent is the bisphenol-A polyethenoxy ether; Rotating speed 600prm stirs 6min, is uniformly dispersed; The calcium chloride of adding 0.03% and 0.015% Xylo-Mucine stablizer; Acidity is regulated to 2.0-3.0 with 0.04% hydrochloric acid in the back, and stirs, and makes soap lye.With the pitch after softening and soap lye in proportion 50: 50 ratio grind 1 through body, stator, rotor clearance be less than 2.5mm, the rotating speed 4000rpm of colloidal mill, emulsifying temperature is 75 ℃, obtains the lithium ion material and uses modified emulsifying asphalt.Adopting the solid content of SH/T0099-2005 emulsified bitumen testing method check modified emulsifying asphalt is 50%.
Embodiment 4 (zwitter-ion emulsifying agent)
Get 20% 90# pitch and heat in 160 ℃ baking oven with the heat-up rate of 5 ℃/min, softening 4 hours, 20 eye mesh screens sieved.The emulsifying agent of adding 2% in 77.94% pure water, water temperature is 70 ℃, emulsifying agent is the hexadecanol Soxylat A 25-7; Rotating speed 600prm stirs 12min, is uniformly dispersed; The CMC 99.5 stablizer of adding 0.04%; Acidity is regulated to 2.0-3.0 with hydrochloric acid 0.02% in the back, and stirs, and makes soap lye.With the pitch after softening and soap lye in proportion 20: 80 ratio pass through 2 colloidal mills, stator, rotor clearance be less than 2.5mm, the rotating speed 2000rpm of colloidal mill, emulsifying temperature is 50 ℃, obtains the lithium ion material and uses modified emulsifying asphalt.Adopting the solid content of SH/T0099-2005 emulsified bitumen testing method check modified emulsifying asphalt is 20%.
Embodiment 5
Get 60% coal tar pitch and heat in 250 ℃ baking oven with the heat-up rate of 5 ℃/min, softening 5 hours, 20 eye mesh screens sieved.The emulsifying agent of adding 0.6% in 39.34% pure water, water temperature is 95 ℃, the emulsifying agent mass ratio is 2: 1 polyethenoxy ether and two (octadecyl) alkyl dimethyl ammonium chloride; Rotating speed 600prm stirs 5min, is uniformly dispersed; The Z 150PH stablizer of adding 0.04%; Acidity is regulated to 2.0-3.0 with 0.02% hydrochloric acid in the back, and stirs, and makes soap lye.With the pitch after softening and soap lye in proportion 60: 40 ratio pass through 1 colloidal mill, stator, rotor clearance be less than 2.5mm, the rotating speed 10000rpm of colloidal mill, emulsifying temperature is 70 ℃, obtains the lithium ion material and uses modified emulsifying asphalt.Adopting the solid content of SH/T0099-2005 emulsified bitumen testing method check modified emulsifying asphalt is 60%.
Embodiment 6
Get 40% rock asphalt and heat in 200 ℃ baking oven with the heat-up rate of 5 ℃/min, softening 4 hours, 20 eye mesh screens sieved.The emulsifying agent of adding 3% in 56.915% pure water, water temperature is 80 ℃, the emulsifying agent mass ratio is 1: 1 X 2073 and a hexadecanol Soxylat A 25-7; Rotating speed 600prm stirs 10min, is uniformly dispersed; The calcium chloride stablizer of adding 0.06%; Regulate acidity to 2.0-3.0 with 0.025% hydrochloric acid, and stir, make soap lye.With the pitch after softening and soap lye in proportion 40: 60 ratio pass through 1 colloidal mill, stator, rotor clearance be less than 2.5mm, the rotating speed 6000rpm of colloidal mill, emulsifying temperature is 80 ℃, obtains the lithium ion material and uses modified emulsifying asphalt.Adopting the solid content of SH/T0099-2005 emulsified bitumen testing method check modified emulsifying asphalt is 40%.
The solid content testing method of modified emulsifying asphalt of the present invention is: according to SH/T 0099.15-2005 emulsified bitumen water-content assay method (distillation method), and solid content=100%-percent water ratio content.
The testing method of the storage stability of modified emulsifying asphalt is according to SH/T 0099.5-2005 emulsified asphalt storing stability assay method.
The compatibility of modified emulsifying asphalt material is pressed 1: 1: 1 mixed of mass ratio with lithium ion battery material and modified emulsifying asphalt and water; Visual cohesion, conglomeration or the sedimentation phenomenon of seeing if there is, if it is cohesion, conglomeration or sedimentation phenomenon occur, then incompatible; As do not occur, then think compatible.
The measuring method of modified emulsifying asphalt material remaining carbon: accurately the quality of weighing modified emulsifying asphalt is designated as m
1, in 1000 ℃ sintering oven, feed rare gas element, the modified emulsifying asphalt sample is carried out sintering 10h, its quality of sinter weighing that obtains is designated as m
2, the remaining carbon of modified emulsifying asphalt is: (m
1-m
2) * 100%/m
1Evaluation result is listed in table 1.
Adopt modified emulsifying asphalt of the present invention to do carbon source, phosphoric acid salt and silicate anodal material that lithium ion battery is used carry out modification.Modified phosphate iron lithium adopts the preparation of following method: (1) is that ratio wet ball grinding 4～48h of 1: 1: 1 obtains compound with monometallic, Ferrox in lithium, iron, phosphorus mol ratio.(2) add in compound that to account for the LiFePO 4 material mass ratio be 1～25% carbon encapsulated material modified emulsifying asphalt, continue ball milling 4～48h, mist projection granulating obtains precursor then.(3) with precursor at 300-400 ℃ of pre-treatment 2～12h, be warmed up to 650 ℃ and constant temperature to 4～48h again, naturally cool to room temperature then.(4) join disintegrating apparatus, under 3000～6000rpm condition, pulverize and obtain the lithium ion battery lithium iron phosphate positive material.
The modification ferric metasilicate lithium adopts the preparation of following method: (1) is by material mol ratio Li: Fe: Si=2: adopt Lithium Acetate or Quilonum Retard, Fe source compound adopt ferrous sulfate or red stone, silicon source compound employing silicon sol be distributed in water Li source compound at 1: 1; After fully stirring; Adding mass ratio again is 1～10% carbon source modified emulsifying asphalt (pressing the finished product cubage), continues to stir 10min.(2) with above-mentioned mixed system ball milling 0.5～12 hour under the rotating speed of 200～500r/min, spraying drying obtains the positive electrode material presoma under 100～360 ℃ of conditions then.(3) calcination process: with the heat-up rate of presoma with 1～10 ℃/min, calcination process is 5～24 hours in 600～950 ℃, is cooled to room temperature then naturally, obtains the lithium ion battery silicate positive electrode material that the carbon material modified emulsifying asphalt coats.
Adopt modified emulsifying asphalt of the present invention to do carbon source, the composite negative pole material of composite negative pole, charcoal negative pole or the charcoal of lithium titanate, silicon and the charcoal that lithium ion battery is used carries out modification.Modified lithium titanate adopts following method preparation: (1) with the carbon material modified emulsifying asphalt of 27.5～24.75wt% Quilonum Retard, 72.5～65.25wt% titanium oxide, 1～10wt%, is ground 2～40h with the method for ball milling and is made lithium titanate precursor mixture in proportion.
(2) mixture is scattered in the organic solvent ethanol, adopts spray-dired method to obtain the lithium titanate precursor.
(3) with precursor thermal treatment 4～40h in 500～900 ℃ TR.(4) naturally cool to room temperature and promptly obtain the modified lithium titanate negative material.
Modification silicon and charcoal composite negative pole material adopt the preparation of following method: (1) with the silicon phase particle of 0.1～1um and carbon content are more than 99.9%, particle diameter is 0.1～5um carbon phase particle by 3～40: 60～97 mass ratio mixing granulation, process the composite particles matrix.(2) with composite particles matrix and the carbon source modified emulsifying asphalt wet-mixed 1～12h that accounts for composite particles matrix 1～25wt%, vapour deposition or coating granulation under 100～400 ℃ of conditions then.(3) particle after will coating carries out carbonizing treatment, and heat-up rate is that 1～10 ℃/min is heated to 450～1500 ℃ under protective atmosphere, is incubated 1～10 hour, drops to room temperature then, forms carbon coating layer.(4) 5～40um is broken up in fragmentation, makes lithium ion battery modification silicon-carbon composite cathode material.
The composite negative pole material of modification charcoal adopts following method preparation: (1) is uniformly dispersed synthetic graphite or the natural graphite of 10～20um by arbitrary proportion adding deionized water for stirring.The carbon source modified emulsifying asphalt wet-mixed 0.2～4h that (2) will account for synthetic graphite or natural graphite 1～40wt% obtains mixed system.(3) above-mentioned mixed system mist projection granulating is obtained the composite negative pole material precursor.(4) be that 1～10 ℃/min is heated to 450～1500 ℃ with composite negative pole material precursor heat-up rate under protective atmosphere, be incubated 1～10 hour, drop to room temperature then, obtain the modification composite negative pole material.
Lithium ion battery material after the modification and the lithium ion battery material that does not carry out modification are made the two electrodes test cell respectively.Do positive pole respectively with lithium ion battery material after the modification and the lithium ion battery material that does not carry out modification; Wherein iron lithium phosphate or ferric metasilicate lithium are coated on the aluminium foil, and the composite negative pole material of the composite negative pole of lithium titanate, silicon and charcoal, charcoal negative pole or charcoal is coated on the Copper Foil.Coating thickness is less than 0.1mm.Be respectively counter electrode with lithium, 1M LiPF
6Three component mixed solvent EC: DMC: EMC=1: be electrolytic solution at 1: 1, and barrier film is the PE/PP/PE composite package, is assembled into the two electrodes test cell.Adopt the battery test system of the blue electric ltd in Wuhan, discharge and recharge under the condition at 0.1C and respectively the two electrodes test cell is tested, draw initial charge specific storage, first discharge specific capacity and the first charge-discharge efficiency of contrast test material.Testing method and data computation are following:
The initial charge specific storage: with the electric current initial charge of 0.1C to the charging capacity that requires voltage/negative electrode active material quality;
First discharge specific capacity: the loading capacity/negative electrode active material quality that is discharged to requirement with the electric current of 0.1C first;
First charge-discharge efficiency=(initial charge capacity/loading capacity) first * 100%.
The modified emulsifying asphalt of embodiment 1-6 is used for the modification lithium-ion battery material.With the lithium ion battery material embodiment 2-1～2-6 after the modification, discharge and recharge under the condition at 0.1C and respectively the two electrodes test cell to be tested, test result is seen table 2.The lithium ion battery material that does not carry out modification adopts Comparative Examples 3-1～3-6 to make the two electrodes test cell respectively, discharges and recharges under the condition at 0.1C and respectively the two electrodes test cell is tested, and test result is seen table 3.
Obtained by above experiment, in the presoma of positive electrode material, add modified emulsifying asphalt, the electroconductibility of the positive electrode material that after bakingout process, obtains improves, and visualize improves capacity exactly, raises the efficiency.After in negative material, adding modifying asphalt, through the capacity after the thermal treatment lifting is arranged slightly, improved efficiency is remarkable.Because modified emulsifying asphalt when thermal treatment, can decompose, produce gas, therefore can form micropore, thereby improve absorbency and the cycle performance of material under high compacting at material internal.
Table 1 modified emulsifying asphalt evaluation result
Table 2 positive electrode material, the amount of modified emulsifying asphalt, modified technique, test result
Table 3 does not add the material property table of emulsified bitumen
Claims (1)
1. the preparation method of a modified emulsifying asphalt may further comprise the steps: one, coal tar pitch, petroleum pitch or rock asphalt are warmed up to 120-250 ℃ with the heat-up rate of 5 ℃/min, thermoplastic 2-6h sieves with 20 eye mesh screens; Two, press mass ratio with emulsifying agent 0.1%-5% and water, under rotating speed 600rpm, 50-80 ℃ condition, stir 5-12min; Become clear solution; Add stablizer by the total amount mass ratio greater than 0 to 0.1% then, the adjusting acidity-basicity ph is: 2.0-3.0, process soap lye; Three, by the total amount mass ratio asphaltic liquid 20%-70% and soap lye after softening are added simultaneously, at rotating speed 2000-10000rpm, stator, rotor clearance are less than 2.5mm; Under emulsifying temperature 50-80 ℃ the condition; Obtain modified emulsifying asphalt, modified emulsifying asphalt is grouped into by the one-tenth of following mass ratio: the pitch solid content is 20%-70%, and emulsifier content is 0.1%-5.0%; The content of stablizer is greater than 0 to 0.1%, and all the other are water;
Said emulsifying agent is anionic emulsifier, cationic emulsifier or zwitter-ion emulsifying agent; Said anionic emulsifier is more than one of carboxylate salt, vitriol and sulphonate; Cationic emulsifier is the verivate or the ammonium salt of amine; The zwitter-ion emulsifying agent is polyethenoxy ether class or polyoxypropylene ethers;
Said carboxylate salt is soap C
15-17H
31-35CO
2Na, Triple Pressed Stearic Acid sodium salt C
17H
35CO
2Na; Said vitriol is sodium lauryl sulphate salt C
12H
25OSO
3Na; Said sulphonate is calcium salt of dodecylbenzene sulfonate or sodium lignosulfonate; The verivate of said amine is: N.N-double hydroxyethyl alkylamide C
11H
23CON (CH
2CH
2OH)
2, SEPIGEL 305 [CH
2-CH (CONH
2)] n-, organic halogenation ammonium class: palmityl trimethyl ammonium chloride C
16H
33(CH
3)
3NCl, two (octadecyl) alkyl dimethyl ammonium chloride; Said ammonium salt is quaternary ammonium salt DTAC C
12H
25(CH
3)
3NCl; Said polyethenoxy ether class is: octyl phenol polyoxy ethene C
8H
17-C
6H
4-O-(CH
2CH
2O)
10H, the hexadecanol Soxylat A 25-7; Said polyoxypropylene ethers is: bisphenol-A polyethenoxy ether C
15H
16O
2. (C
3H
6O) n, polyoxyethylene polyoxypropylene tetramethylolmethane ether;
Said stablizer is more than one in muriate, acid and the macromolecule organic; Said muriate is sodium-chlor, Repone K, calcium chloride and magnesium chloride; Said acid is hydrochloric acid, phosphoric acid and nitric acid; Said macromolecule organic is Z 150PH, CMC 99.5.
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| CN103123964B (en) * | 2011-11-18 | 2016-02-03 | 上海杉杉科技有限公司 | Graphite negative material of lithium ion battery and preparation method thereof |
| CN102766341A (en) * | 2012-08-22 | 2012-11-07 | 上海申桥科技发展有限公司 | High solid content emulsified asphalt environment-friendly cold patch liquid and preparation method thereof |
| CN103388296A (en) * | 2013-07-31 | 2013-11-13 | 浙江日盛建设有限公司 | Environment-friendly reclaimed bituminous pavement structure and construction process thereof |
| CN109694482B (en) * | 2017-10-23 | 2021-08-10 | 国家能源投资集团有限责任公司 | Modified emulsified asphalt, preparation method thereof and fog sealing layer material |
| CN109337387B (en) * | 2018-08-30 | 2021-06-22 | 沈阳市沈北新区路佳庆环保型沥青冷拌技术咨询中心 | Environment-friendly high-viscosity modified emulsified asphalt for cold mixing |
| CN109585847B (en) * | 2018-12-03 | 2020-06-19 | 重庆工程职业技术学院 | Quick-charging lithium titanate battery and preparation method thereof |
| CN111748365A (en) * | 2019-03-27 | 2020-10-09 | 中国石油天然气股份有限公司 | Compound oil sand washing and separating agent |
| CN110669347A (en) * | 2019-10-28 | 2020-01-10 | 北京盛广拓再生科技股份有限公司 | Wheel-sticking-free high-viscosity emulsified asphalt |
| CN111342035B (en) * | 2020-03-11 | 2021-12-21 | 西安英纳吉科技有限公司 | Method for modifying silicon-carbon composite negative electrode by asphalt modification process derivative |
| CN113736099A (en) * | 2021-09-16 | 2021-12-03 | 江苏埃创德化学科技有限公司 | Asphalt emulsifier, preparation method and application thereof |
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| CN85100586A (en) * | 1985-04-01 | 1986-07-30 | 鞍山钢铁公司 | Petroleum pitch emulsion |
| CN1793234A (en) * | 2005-12-08 | 2006-06-28 | 广州大学 | SBS modified emulsifying asphalt and preparation process thereof |
| CN101200595A (en) * | 2006-12-12 | 2008-06-18 | 中国石油天然气股份有限公司 | Modified emulsified asphalt |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN85100586A (en) * | 1985-04-01 | 1986-07-30 | 鞍山钢铁公司 | Petroleum pitch emulsion |
| CN1793234A (en) * | 2005-12-08 | 2006-06-28 | 广州大学 | SBS modified emulsifying asphalt and preparation process thereof |
| CN101200595A (en) * | 2006-12-12 | 2008-06-18 | 中国石油天然气股份有限公司 | Modified emulsified asphalt |
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