CN107293746A - Anode material of lithium battery preparation method - Google Patents
Anode material of lithium battery preparation method Download PDFInfo
- Publication number
- CN107293746A CN107293746A CN201710567160.8A CN201710567160A CN107293746A CN 107293746 A CN107293746 A CN 107293746A CN 201710567160 A CN201710567160 A CN 201710567160A CN 107293746 A CN107293746 A CN 107293746A
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- CN
- China
- Prior art keywords
- pvdf
- nmp
- acetylene black
- cobalt acid
- acid lithium
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
-
- 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention provides anode material of lithium battery preparation method, and the positive plate is made up of cobalt acid lithium, acetylene black, PVDF, NMP, and the cobalt acid lithium, acetylene black, the mass ratio between PVDF, NMP are 2：3：2：1；The preparation technology of above-mentioned formula is：Cobalt acid lithium, acetylene black, PVDF, NMP are dehydrated first, normal pressure is toasted；Then the cobalt acid lithium after dehydration, acetylene black are subjected to sieving separating after ball milling, ball milling；NMP and PVDF are stirred to form batch mixing；Carry batch mixing is poured into vacuum to mix motivation and mixed, stir to form anode material, finally by anode material from vacuum mix motivation in take out and carry out colloid mill, sieve；Solvent is dissolved in after sieving to be combined to positive plate.After being combined using this programme, the high advantage of conductive good, degree of adhesion.
Description
Technical field
The present invention relates to technical field of lithium batteries, anode material of lithium battery preparation method is referred in particular to.
Background technology
With the fast development of China's economy, battery new material demand is continuously increased, along with mobile phone, notebook electricity
The products such as brain, digital camera, video camera, automobile are to the solid demand of new, efficient environment-friendly battery material, China's battery green wood
Material market will constantly expand.Put into effect successively in lithium battery relevant policies simultaneously and promote industry upstream and downstream firms like the mushrooms after rain
Set up.Lithium battery is mainly made up of positive electrode, negative material, barrier film and electrolyte etc., and the application of positive electrode and quality are closed
It is tied to battery conductive performance and battery using effect.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide the high lithium battery of a kind of good conductivity, degree of adhesion
Method for preparing anode material.
To achieve the above object, technical scheme provided by the present invention is：Anode material of lithium battery preparation method, it is described just
Pole piece is made up of cobalt acid lithium, acetylene black, PVDF, NMP, and the cobalt acid lithium, acetylene black, the mass ratio between PVDF, NMP are 2：3：
2：1；
The preparation technology of above-mentioned formula is：
1）, cobalt acid lithium is dehydrated, dehydration temperaturre be 120 DEG C, normal pressure toast 2 hours；
2）, acetylene black is dehydrated, dehydration temperaturre be 190 DEG C, normal pressure toast 2 hours；
3）, PVDF is dehydrated, dehydration temperaturre be 115-125 DEG C, normal pressure toast 2 hours；
4）, NMP is dehydrated, the dehydration is dehydrated using dry molecular sieves；
5）, the cobalt acid lithium after dehydration, acetylene black poured into charging basket, while adding abrading-ball（Siccative：Abrading-ball=1:1）, ball milling is carried out,
Rotational speed of ball-mill is 150 revs/min, ball milling 4-6 hours, sieving separating after ball milling；
6）, NMP and PVDF poured into agitator, first stirring at low speed 30 minutes during stirring, low rotation speed is 40 revs/min, Ran Hougao
Speed stirring 4-5 hour, high-speed stirred is 600 revs/min, stirring at low speed 30 minutes again after high-speed stirred, low rotation speed for 30 turns/
Point, the cooling system of turn on agitator during high-speed stirred；
7）, by the 5th）With the 6th）The batch mixing that step is produced pours into the mixed motivation of vacuum and mixed, and holding vacuum is -0.09Mpa,
Stirring 30-40 minutes；
8）, by anode material from vacuum mix motivation in take out carry out colloid mill, sieving；
9）, dissolve in solvent after sieving and can be combined to positive plate.
The cobalt acid lithium that this programme is used is apolar substance, irregular shape, particle diameter D50, generally 6-8 μm, water content
≤ 0.2%, pH value is 10-11 or so；
Acetylene black is used for the electric conductivity for improving positive plate, compensates the electron conduction of positive active material.Improve the electricity of positive plate
The liquid absorption of liquid is solved, increases reaction interface, polarization is reduced.
PVDF is used to cobalt acid lithium, acetylene black and positive plate being bonded together, PVDF apolar substances, chain thing；
NMP is low pole liquid, for dissolving/PVDF is swelled, while for diluted slurry.
After being combined using the above method, the high advantage of conductive good, degree of adhesion.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is distribution blade structural representation of the invention.
Embodiment
With reference to all accompanying drawings, the invention will be further described, and presently preferred embodiments of the present invention is：Referring to the He of accompanying drawing 1
Accompanying drawing 2, the anode material of lithium battery preparation method described in the present embodiment, the positive plate is by cobalt acid lithium, acetylene black, PVDF, NMP
Constitute, the cobalt acid lithium, acetylene black, the mass ratio between PVDF, NMP are 2：3：2：1；
The preparation technology of above-mentioned formula is：
1）, cobalt acid lithium is dehydrated, dehydration temperaturre be 120 DEG C, normal pressure toast 2 hours；
2）, acetylene black is dehydrated, dehydration temperaturre be 190 DEG C, normal pressure toast 2 hours；
3）, PVDF is dehydrated, dehydration temperaturre be 115-125 DEG C, normal pressure toast 2 hours；
4）, NMP is dehydrated, the dehydration is dehydrated using dry molecular sieves；
5）, the cobalt acid lithium after dehydration, acetylene black poured into charging basket, while adding abrading-ball（Siccative：Abrading-ball=1:1）, ball milling is carried out,
Rotational speed of ball-mill is 150 revs/min, ball milling 4-6 hours, sieving separating after ball milling；
6）, NMP and PVDF poured into agitator, first stirring at low speed 30 minutes during stirring, low rotation speed is 40 revs/min, Ran Hougao
Speed stirring 4-5 hour, high-speed stirred is 600 revs/min, stirring at low speed 30 minutes again after high-speed stirred, low rotation speed for 30 turns/
Point, the cooling system of turn on agitator during high-speed stirred；
7）, by the 5th）With the 6th）The batch mixing that step is produced pours into the mixed motivation of vacuum and mixed, and holding vacuum is -0.09Mpa,
Stirring 30-40 minutes；
8）, by anode material from vacuum mix motivation in take out carry out colloid mill, sieving；
9）, dissolve in solvent after sieving and can be combined to positive plate.
The special agitator of above-mentioned technique includes it and includes being provided with ball grinder 2, ball grinder 2 in organic frame 1, frame 1
Tank skin uses and cooling water is marked with double layer hollow mechanism, its hollow layer, and the lateral wall top of ball grinder 2 is provided with water inlet 3, ball grinder
2 lateral wall bottoms are provided with delivery port 4, and the bottom of ball grinder 2 is provided with discharging cylinder 5, and the top of ball grinder 2 is provided with power seat 6, power seat 6
Top is provided with spindle motor 7, and the power transmission shaft of spindle motor 7 is connected downwards with the main top of agitating shaft 8, and the main bottom of agitating shaft 8 is downward
The inner chamber bottom of ball grinder 2 is extended to, the main bottom of agitating shaft 8 is provided with distribution blade 10, main stirring provided with lifting disk 9, lifting disk 9 bottom
The outside of axle 8 is provided with outer agitating shaft 11, and outer agitating shaft 11 is cylindrical, and outer agitating shaft 11 is arranged on main agitating shaft 8 by bearer ring
Top, the outer top of agitating shaft 11 is provided with outer drive, and the top side of power seat 6 is provided with outer stirring motor 12, outer stirring motor 12
It is connected between outer drive by belt, the outer bottom of stirring motor 12 is provided with the grinding blade 13 of square frame-shaped, grinds blade
It is provided with 13 in the ball milling blade 14 in rotation spiral shell shape, ball grinder 2 and is provided with mill ball；Probe tube is provided with the hollow layer of ball grinder 2
15, the top of probe tube 15 is upward through the formation of ball grinder 2 outlet, and the inner chamber of ball grinder 2 is provided with multiple with taking that probe tube 15 is connected
Sample mouthful 16.
The cobalt acid lithium that the present embodiment is used is apolar substance, irregular shape, particle diameter D50, generally 6-8 μm, aqueous
Amount≤0.2%, pH value is 10-11 or so；
Acetylene black is used for the electric conductivity for improving positive plate, compensates the electron conduction of positive active material.Improve the electricity of positive plate
The liquid absorption of liquid is solved, increases reaction interface, polarization is reduced.
PVDF is used to cobalt acid lithium, acetylene black and positive plate being bonded together, PVDF apolar substances, chain thing；
NMP is low pole liquid, for dissolving/PVDF is swelled, while for diluted slurry.
After being combined using the above method, the high advantage of conductive good, degree of adhesion.
Embodiment described above is only the preferred embodiments of the invention, and the practical range of the present invention is not limited with this,
Therefore the change that all shape, principles according to the present invention are made, it all should cover within the scope of the present invention.
Claims (1)
1. anode material of lithium battery preparation method, it is characterised in that：The positive plate is by cobalt acid lithium, acetylene black, PVDF, NMP structure
Into the cobalt acid lithium, acetylene black, the mass ratio between PVDF, NMP are 2：3：2：1；
The preparation technology of above-mentioned formula is：
1）, cobalt acid lithium is dehydrated, dehydration temperaturre be 120 DEG C, normal pressure toast 2 hours；
2）, acetylene black is dehydrated, dehydration temperaturre be 190 DEG C, normal pressure toast 2 hours；
3）, PVDF is dehydrated, dehydration temperaturre be 115-125 DEG C, normal pressure toast 2 hours；
4）, NMP is dehydrated, the dehydration is dehydrated using dry molecular sieves；
5）, the cobalt acid lithium after dehydration, acetylene black poured into charging basket, while adding abrading-ball（Siccative：Abrading-ball=1:1）, ball milling is carried out,
Rotational speed of ball-mill is 150 revs/min, ball milling 4-6 hours, sieving separating after ball milling；
6）, NMP and PVDF poured into agitator, first stirring at low speed 30 minutes during stirring, low rotation speed is 40 revs/min, Ran Hougao
Speed stirring 4-5 hour, high-speed stirred is 600 revs/min, stirring at low speed 30 minutes again after high-speed stirred, low rotation speed for 30 turns/
Point, the cooling system of turn on agitator during high-speed stirred；
7）, by the 5th）With the 6th）The batch mixing that step is produced pours into the mixed motivation of vacuum and mixed, and holding vacuum is -0.09Mpa,
Stirring 30-40 minutes；
8）, by anode material from vacuum mix motivation in take out carry out colloid mill, sieving；
9）, dissolve in solvent after sieving and can be combined to positive plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710567160.8A CN107293746A (en) | 2017-07-12 | 2017-07-12 | Anode material of lithium battery preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710567160.8A CN107293746A (en) | 2017-07-12 | 2017-07-12 | Anode material of lithium battery preparation method |
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| Publication Number | Publication Date |
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| CN107293746A true CN107293746A (en) | 2017-10-24 |
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ID=60100692
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| CN201710567160.8A Pending CN107293746A (en) | 2017-07-12 | 2017-07-12 | Anode material of lithium battery preparation method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757700A (en) * | 2012-07-25 | 2012-10-31 | 山东精工电子科技有限公司 | Lithium ion battery anode functional coating and preparation method thereof |
| CN104505536A (en) * | 2014-11-25 | 2015-04-08 | 广安鼎恒新能源锂电池制造股份有限公司 | Preparation technology applied to produce soft-shell lithium battery |
| CN105261794A (en) * | 2015-10-20 | 2016-01-20 | 四川科能锂电有限公司 | Lithium battery processing technology |
| CN105702915A (en) * | 2014-11-25 | 2016-06-22 | 江苏永昌新能源科技有限公司 | Formula and preparation method of lithium battery positive plate |
-
2017
- 2017-07-12 CN CN201710567160.8A patent/CN107293746A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757700A (en) * | 2012-07-25 | 2012-10-31 | 山东精工电子科技有限公司 | Lithium ion battery anode functional coating and preparation method thereof |
| CN104505536A (en) * | 2014-11-25 | 2015-04-08 | 广安鼎恒新能源锂电池制造股份有限公司 | Preparation technology applied to produce soft-shell lithium battery |
| CN105702915A (en) * | 2014-11-25 | 2016-06-22 | 江苏永昌新能源科技有限公司 | Formula and preparation method of lithium battery positive plate |
| CN105261794A (en) * | 2015-10-20 | 2016-01-20 | 四川科能锂电有限公司 | Lithium battery processing technology |
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Application publication date: 20171024 |
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