CN103280566B - Preparation methods of positive and negative pole pastes for lithium ion batteries - Google Patents
Preparation methods of positive and negative pole pastes for lithium ion batteries Download PDFInfo
- Publication number
- CN103280566B CN103280566B CN201310212910.1A CN201310212910A CN103280566B CN 103280566 B CN103280566 B CN 103280566B CN 201310212910 A CN201310212910 A CN 201310212910A CN 103280566 B CN103280566 B CN 103280566B
- Authority
- CN
- China
- Prior art keywords
- revs
- revolution
- rotating speed
- rotation
- lithium ion
- Prior art date
- 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.)
- Active
Links
Classifications
-
- 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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention belongs to the technical field of pastes for lithium ion batteries and in particular relates to preparation methods of positive and negative pole pastes for lithium ion batteries. The preparation method of the negative pole paste comprises the following steps of: mixing an anti-sedimentation dispersing agent, a negative pole conductive agent and a negative pole active substance, then adding a solvent for stirring, and finally, adding water-based cement for uniformly stirring to obtain the negative pole paste. The preparation method of the positive pole paste comprises the following steps of: mixing a macromolecular adhesive, a positive pole conductive agent and an active substance, then adding a solvent and sufficiently and uniformly stirring the materials to obtain the positive pole paste. The preparation methods of the positive and negative pole pastes for the lithium ion batteries are simple and feasible, are short in production period and low in comprehensive cost and has a good dispersion effect; the production efficiency is greatly improved, and the stirring time is shortened by half compared with that of a traditional process; and the produced lithium battery has excellent battery core multiplying power, circulating property and high-temperature storage property.
Description
Technical field
The invention belongs to pulp of lithium ion battery technical field, be specifically related to a kind of preparation method of lithium ion battery plus-negative plate slurry.
Background technology
During current making lithium ion battery, positive pole agitating procedure is generally that binding agent is in organic solvent molten, then adds conductive agent and stirs, and finally adds active material and stirs, can discharging after viscosity regulates, and its technological process as shown in Figure 1.Negative pole agitating procedure is generally and is first dissolved in solvent by anti-settling dispersant, then adds conductive agent and stirs, then adds active material and stir, and finally adds water-base cement and stirs, can discharging after viscosity regulates, its technological process part Fig. 2.This agitating mode all needs to open agitator tank due to an every reinforced step, especially need to vacuumize stirring, need, first vacuumizing stopping, then to open jar, then feeding in raw material, and then again open vacuum stirring, this process need flower at least 15 to 20 minutes, therefore can extend manufacture cycle greatly, inefficiency, energy consumption is large, and integrated cost is high.
China Patent No. is: 200810008359.8; the preparation method of a kind of lithium ion battery cathode slurry of denomination of invention and negative pole; the method disclosed comprises thickener, negative electrode active material and solvent; wherein, the described method by thickener, electrode active material and solvent comprise by thickener and partial solvent mixing be made into colloidal solution; This colloidal solution, negative active core-shell material and partial solvent are put into double planetary mixer, stirs; Then add adhesive and remaining solvent, then stir.Preparation time not only can be made greatly to shorten according to cathode size method of preparing provided by the invention, and slurry dispersion homogeneity and stability all greatly improve, the cycle performance of the battery be made up of this kind of slurry also greatly improves, but by the method for thickener and active material and solvent, be made in the process of colloid, because the viscosity of colloid is very large, pulverous negative electrode active material is difficult to scatter equably, cause the time of stirring to lengthen, and dispersion effect is bad.And this invention is only for the preparation method of cathode size, anode sizing agent or the stirring technique that employing is traditional equally, the preparation technology of integral battery door is difficult to the time reach quick minimizing, and the battery prepared 300 circulation volume conservation rates are the highest can only to 89%.
Another patent 201010258975.6 of China; disclose a kind of lithium ion battery, cathode size and preparation method thereof, the method comprises the following steps: (1) adds lubricant after negative electrode active material and cathode conductive agent being mixed in blender and stirs; (2) additive sodium carboxymethylcellulose CMC is added in blender stir; (3) add in the blend glue stuff of negative pole aqueous solvent and negative electrode binder by material in above-mentioned blender, mixing and stirring, makes cathode size.Described lubricant is the mixture of alcohol, ketone or alcohol and ketone.The present invention mixes with graphite and conductive agent owing to adopting wetting agent, effectively can shorten wetting time, shorten slurry preparation time, improves uniformity and the stability of cathode size.Be the hybrid mode taking liquid to be first fixed equally, dispersion effect is not good, and the battery prepared 300 capability retentions are the highest only has 88.9%, and battery performance is not good.
Summary of the invention
The object of the invention is for above-mentioned deficiency of the prior art, a kind of preparation method of lithium ion battery plus-negative plate slurry is provided, it has produces the feature simple, mixing cycle is short, dispersion effect good, energy consumption is little and cost is low, the lithium ion battery prepared, it is large that it has cell output, battery high-temperature stable storing performance is good, the feature that circulating battery capability retention is high.
Object of the present invention is achieved through the following technical solutions:
A preparation method for lithium ion battery plus-negative plate slurry, is characterized in that: cathode size comprises following preparation process:
A. the cathode conductive agent of powdery, negative electrode active material and anti-settling dispersant are put into agitator tank successively to stir;
B. after each powder in steps A mixes, add solvent, continue to stir, by each powder complete wetting;
C. continue to stir add water-base cement in agitator tank after;
D. after the material stirring in step C is even, adjusting viscosity;
Anode sizing agent comprises following preparation process:
1) the positive conductive agent of powdery, positive active material and high polymer binder are added in agitator tank stir;
2) then in agitator tank, add organic solvent, stir, until flour complete wetting;
3) adjusting viscosity.
Wherein, described cathode size comprises following preparation process:
A. first the cathode conductive agent of powdery, negative electrode active material and anti-settling dispersant are put into agitator tank successively, do not open vacuum, open simultaneously revolution and rotation carry out dry powder stirring 15 ~ 90min, the rotating speed of revolution is 15 ~ 30 revs/min, and the rotating speed of rotation is 500 ~ 1000 revs/min; Revolution is herein used for mixing, and therefore rotating speed need not be too fast, is certainly diverted to the powder that chopping is granular, makes mixing more even, therefore needs larger rotating speed.
B. after powder each in steps A mixes, solvent is added in agitator tank, setting revolution rotating speed is 15 ~ 30 revs/min, rotation rotating speed is 500 ~ 1000 revs/min, continue stirring 10 ~ 30min, dry powder on revolution and rotation paddle is scraped in agitator tank by period, confirms each powder complete wetting;
C.-99kPa ~-90kPa is evacuated to, setting revolution rotating speed is 25 ~ 35 revs/min, rotation rotating speed is 1000 ~ 1500 revs/min, after stirring 120 ~ 240min, add water-base cement, resetting revolution rotating speed is 15 ~ 25 revs/min, rotation rotating speed is 500 ~ 800 revs/min, adjust rotating speed after stirring 5 ~ 15min to revolution 20 ~ 35 revs/min, rotation 1000 ~ 1500 revs/min, stir 40 ~ 90min; Just add water-base cement, prevent rotating speed excessive, water-base cement is splashed agitator tank top, therefore when adding water-base cement, rotating speed is suitably reduced.
D. add organic solvent, adjustment rotating speed is to revolution 15 ~ 25 revs/min, and rotation 500 ~ 800 revs/min, stirs 10 ~ 30min, utilize solvent adjustment slurry viscosity at 1500-4000 mPas.Concrete, organic solvent is 1-METHYLPYRROLIDONE, and it effectively can reduce the surface tension of slurry, reduces the generation of cathode size bubble, filters more smooth and easy, and the negative plate after coating oven dry is more soft, and pole piece not easily dry linting after pair roller, surface is more level and smooth.
The mixer that the present invention uses is double planetary mixer, can carry out revolution and rotation stirring simultaneously.
Wherein, in described step D, after viscosity mixes up, open vacuum and continue revolution and stir 10-30min, revolution speed 15 ~ 35 revs/min, use that 150 object steel are sieved leaches material.After only opening revolution vacuum stirring slowly, farthest can remove bubble, prevent coating from producing dew Copper Foil phenomenon because of bubbles burst.
Wherein, described cathode conductive agent comprises any one or several mixture of conductive carbon black, electrically conductive graphite, carbon fiber and carbon nano-tube, described negative electrode active material comprises any one or wherein several mixtures in Delanium, native graphite, soft carbon and hard carbon, described anti-settling dispersant for water-base cement described in sodium carboxymethylcellulose be SBR emulsion, concrete, the solid content of SBR emulsion is 50%.Its dielectric property are better, and ease of solubility is strong, and solution viscosity is improved, and form colloid substance, are easy to coating.
Wherein, the slurry of described positive pole comprises following preparation process:
1) the positive conductive agent of powdery, positive active material and high polymer binder are put into agitator tank successively, do not open vacuum, open simultaneously revolution and rotation carry out dry powder stir 15 ~ 90min, revolve round the sun rotating speed be 15 ~ 30 revs/min, rotation rotating speed is 500 ~ 1000 revs/min; The material that this step stirs is powder entirely, does not vacuumize, prevents powder from flying upward.The object of revolution is mixing, and the object of rotation is to provide shearing force that particle is shredded, and makes mixing more fully with even.
2) after powder each in step 1) mixes, add 1-METHYLPYRROLIDONE, setting revolution rotating speed is 15 ~ 30 revs/min, and rotation rotating speed is 500 ~ 1000 revs/min, continues stirring 10 ~ 30min, dry powder on revolution and rotation paddle is scraped in agitator tank by period, after each powder complete wetting, be evacuated to-99kPa ~-90kPa, adjustment revolution rotating speed is 25 ~ 35 revs/min, rotation rotating speed is 1000 ~ 1500 revs/min, stirs 120 ~ 240min.
3) utilize organic solvent to regulate slurry viscosity at 3000-6000 mPas, after viscosity mixes up, only open revolution vacuum and stir 30min slowly, use 150 order steel screen filtration dischargings.Later stage only opens revolution vacuum and stirs slowly, prevents slurry layering.
Wherein, before step 1), first positive conductive agent, positive active material and high polymer binder are contained in pallet respectively, are put in baking oven 100 ~ 150 DEG C of bakings 1 ~ 5 hour, ensure that its powder is in drying regime, make dry powder blend more abundant.
Wherein, described solvent has deionized water, and described organic solvent is 1-METHYLPYRROLIDONE.
Wherein, the slurry of described positive pole is made up of the material of following weight ratio: positive active material: positive conductive agent: high polymer binder: 1-METHYLPYRROLIDONE=100:0.05 ~ 15:0.2 ~ 10:60 ~ 160.
Wherein, the slurry of described negative pole is made up of the material of following weight ratio: negative electrode active material: cathode conductive agent: anti-settling dispersant: water-base cement: deionized water: 1-METHYLPYRROLIDONE=100:0.05-10:0.05-8:0.3-10:100-200:0.5-10.
Wherein, described positive conductive agent comprises any one or wherein several mixtures in conductive carbon black, electrically conductive graphite, carbon fiber and carbon nano-tube, described positive active material is any one or wherein several mixtures in lithium intercalation compound such as cobalt acid lithium, LiMn2O4, nickle cobalt lithium manganate and LiFePO4 etc., and described high polymer binder is polyvinylidene fluoride.
Cobalt acid lithium has the following advantages as positive electrode:
1. operating voltage is high;
2. charging/discharging voltage is steady;
3. be applicable to high current charge-discharge;
4. specific energy is high;
5. conductivity is high;
6. production technology is simple.
Nickle cobalt lithium manganate has the following advantages as positive electrode:
1, energy density is high;
2. operating voltage range is wide, can in 2.5-4.5V voltage range stable circulation;
3. good cycle under normal temperature and high temperature;
4. Heat stability is good;
5. have extended cycle life crystal structure ideal, and self discharge is little.
LiFePO4 has the following advantages as positive electrode:
1. environmental protection, not containing any harmful heavy metal element;
2. cycle performance is long, under 100%DOD condition, and discharge and recharge more than 2000 times capability retentions more than 80%;
3. high-temperature stability is good, and security performance is good;
4. aboundresources.
LiMn2O4 has the following advantages as positive electrode:
1. aboundresources;
2. low price;
3. fail safe is high;
4. operating voltage is high;
5. preparation is simple.
Carbon fiber powder be by high-strength high-modules carbon fibre long filament through special technique surface treatment, grinding,
The isometric cylindrical particulate obtained after micro-examination, screening, hyperthermia drying, it preserves numerous premium properties of carbon fiber, and shape is tiny, surface is pure, specific area is large, is easy to by resin wetted by dispersion, it is the composite material filler of function admirable.Compound can be carried out with materials such as resin, plastics, metal, rubber, to increase the intensity of material and wear-resisting, be widely used in ni-mh, NI-G and lithium ion battery plus-negative plate materials conductive additive, electronic chip, conductive plate, electrically-conducting floor, electric mechanical, antistatic industry (coating, terrace, paint, ink), antistatic filter core, defence and military, building heat preservation, chemical industry food slightly imitated the fields such as filtration, noise eliminator of motorcycle, paint drying room air filtration, polytetrafluoroethylene.
Carbon nano-tube is the One-dimensional Quantum material that one has special construction (radial dimension is nanometer scale, and axial dimension can reach micron dimension), and have typical stratiform hollow structure feature, the two ends of general pipe have end cap to seal.The pipe shaft of carbon nano-tube is director circle tubular construction, is made up of hexagonal carbon ring structure unit, and terminal cap moiety is the polygonized structure containing pentagon and hexagonal carbocyclic ring composition.Carbon nano-tube can only have one deck also can have multilayer, is called single-layer carbon nano-tube and multilayer carbon nanotube, and its diameter is generally 2 ~ 20nm, and the spacing between the synusia of formation carbon nano-tube is about 0.34nm.Carbon nano-tube has good electric conductivity, because the structure of carbon nano-tube is identical with the lamellar structure of graphite, so have good electric property.
As preferred embodiment, positive conductive agent is the mixture of electrically conductive graphite and conductive carbon black, electrically conductive graphite is the important component playing electric action in positive electrode, its conductive capability determines the discharge performance of lithium ion battery, the particle of electrically conductive graphite is larger, be superimposed together composition conductive path, and lithium ion is mobile electric discharge in conductive path.Conductive carbon black is nano level fine-grained particles, can be filled in the gap between electrically conductive graphite, strengthens conductive capability, improves the electrical property of lithium ion battery.
Beneficial effect of the present invention: lithium ion battery plus-negative plate slurry preparation method of the present invention, first the material of all powderies is first carried out premix, again with liquid solvent, reduce step, save the shutdown needed when adding material, reinforced, operating time such as start again, compare traditional handicraft mixing time and shorten half, therefore can save power cost and enhance productivity; The present invention can make each mixing of materials more abundant, stock quality is stablized, not easily layering, simple for process, with short production cycle, dispersion effect is good and integrated cost is low, the lithium ion battery cell multiplying power utilizing the preparation technology of anode and cathode slurry of the present invention to prepare, circulation and high-temperature storage performance are good.
Accompanying drawing explanation
Utilize accompanying drawing to be described further invention, but the embodiment in accompanying drawing does not form any limitation of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.
Fig. 1 is the stirring technique flow chart of traditional lithium ion battery anode glue size;
Fig. 2 is the stirring technique flow chart of traditional lithium ion battery cathode slurry;
Fig. 3 is the stirring technique flow chart of anode sizing agent of the present invention;
Fig. 4 is the stirring technique flow chart of cathode size of the present invention;
Fig. 5 is the cyclic curve figure of the battery core 5C charging 10C electric discharge that comparative example and embodiment obtain.
Embodiment
The invention will be further described with the following Examples.
embodiment 1:
As shown in Figure 3, positive pole stirring technique: polyvinylidene fluoride, conductive carbon black, electrically conductive graphite and nickel-cobalt-manganese ternary material are contained in respectively in pallet, is put in baking oven at 120 DEG C, toasts cooling after 2 hours.2 hours cooled 210g polyvinylidene fluoride will be toasted successively at 120 DEG C, 210g conductive carbon black, 90g electrically conductive graphite and 5.5kg nickel-cobalt-manganese ternary material, be put in the agitator tank of 10L, do not open vacuum and stir 30min slowly, revolve round the sun 20 revs/min, rotation 600 revs/min, after each powder mixes, after adding the 1-METHYLPYRROLIDONE of 4.5kg, revolution and rotation mixing speed constant, continue to stir 30min slowly, period needs the dry powder on revolution and rotation paddle to scrape in agitator tank, after confirming each powder complete wetting, be evacuated to-90kPa, revolve round the sun 33 revs/min, rotation 1300 revs/min, stir 210min.Slurry viscosity, at 3000-6000 mPas, before discharging, after only opening revolution vacuum stirring 30min slowly, uses 150 object steel screen filtration dischargings.
As shown in Figure 4, negative pole stirring technique: successively by 79g sodium carboxymethylcellulose, 158g conductive carbon black and 3.6kg Delanium are put in the agitator tank of 10L, do not open vacuum and stir 30min slowly, revolve round the sun 20 revs/min, rotation 600 revs/min, after each powder mixes, add the deionized water of 6.1kg, revolution and rotation mixing speed constant, do not open vacuum and stir 30min slowly, period needs the dry powder on revolution and rotation paddle to scrape in agitator tank, after confirming each powder complete wetting, be evacuated to-90kPa, revolve round the sun 30 revs/min, rotation 1200 revs/min, after stirring 210min, once add SBR emulsion 204g, revolve round the sun 20 revs/min, rotation 600 revs/min, slowly rotating speed is adjusted after stirring 10min to revolution 30 revs/min, rotation 1200 revs/min, stir 60min, add 150g 1-METHYLPYRROLIDONE, adjustment rotating speed is to revolution 20 revs/min, rotation 600 revs/min, slowly slurry viscosity is surveyed after mixing 30min, viscosity is adjusted to 1500-4500 mPas, before discharging, after only opening revolution vacuum stirring 30min slowly, use 150 object steel screen filtration dischargings.
embodiment 2:
As shown in Figure 3, positive pole stirring technique: polyvinylidene fluoride, conductive carbon black, electrically conductive graphite and nickel-cobalt-manganese ternary material are contained in respectively in pallet, is put in baking oven at 120 DEG C, toasts cooling after 2 hours.Successively by 178g polyvinylidene fluoride, 208g conductive carbon black, 59g electrically conductive graphite and 5.5kg nickel-cobalt-manganese ternary material, be put in the agitator tank of 10L, do not open vacuum and stir 30min slowly, revolve round the sun 20 revs/min, rotation 600 revs/min, after each powder mixes, after adding the 1-METHYLPYRROLIDONE of 4.2kg, revolution and rotation mixing speed constant, continue to stir 30min slowly, period needs the dry powder on revolution and rotation paddle to scrape in agitator tank, after confirming each powder complete wetting, be evacuated to-90kPa, revolve round the sun 33 revs/min, rotation 1300 revs/min, stir 210min.Slurry viscosity, at 3000-6000 mPas, before discharging, after only opening revolution vacuum stirring 30min slowly, uses 150 object steel screen filtration dischargings.
As shown in Figure 4, negative pole stirring technique: successively by 70g sodium carboxymethylcellulose, 116g conductive carbon black and 3.6kg Delanium are put in the agitator tank of 10L, do not open vacuum and stir 30min slowly, revolve round the sun 20 revs/min, rotation 600 revs/min, after each powder mixes, add the deionized water of 5.8kg, revolution and rotation mixing speed constant, do not open vacuum and stir 30min slowly, period needs the dry powder on revolution and rotation paddle to scrape in agitator tank, after confirming each powder complete wetting, be evacuated to-90kPa, revolve round the sun 30 revs/min, rotation 1200 revs/min, after stirring 210min, once add SBR emulsion 178g, revolve round the sun 20 revs/min, rotation 600 revs/min, slowly rotating speed is adjusted after stirring 10min to revolution 30 revs/min, rotation 1200 revs/min, stir 60min, add 150g 1-METHYLPYRROLIDONE, adjustment rotating speed is to revolution 20 revs/min, rotation 600 revs/min, slowly slurry viscosity is surveyed after mixing 30min, viscosity is adjusted to 1500-4500 mPas, before discharging, after only opening revolution vacuum stirring 30min slowly, use 150 object steel screen filtration dischargings.
embodiment 3:
As shown in Figure 3, positive pole stirring technique: polyvinylidene fluoride, conductive carbon black, electrically conductive graphite and nickel-cobalt-manganese ternary material are contained in respectively in pallet, is put in baking oven at 120 DEG C, toasts cooling after 2 hours.Successively by 147g polyvinylidene fluoride, 176g conductive carbon black, 59g electrically conductive graphite and 5.5kg nickel-cobalt-manganese ternary material, be put in the agitator tank of 10L, do not open vacuum and stir 30min slowly, revolve round the sun 20 revs/min, rotation 600 revs/min, after each powder mixes, after adding the 1-METHYLPYRROLIDONE of 3.8kg, revolution and rotation mixing speed constant, continue to stir 30min slowly, period needs the dry powder on revolution and rotation paddle to scrape in agitator tank, after confirming each powder complete wetting, be evacuated to-90kPa, revolve round the sun 33 revs/min, rotation 1300 revs/min, stir 210min.Slurry viscosity, at 3000-6000 mPas, before discharging, after only opening revolution vacuum stirring 30min slowly, uses 150 object steel screen filtration dischargings.
As shown in Figure 4, negative pole stirring technique: successively by 57g sodium carboxymethylcellulose, 96g conductive carbon black and 3.6kg Delanium are put in the agitator tank of 10L, do not open vacuum and stir 30min slowly, revolve round the sun 20 revs/min, rotation 600 revs/min, after each powder mixes, add the deionized water of 5.4kg, revolution and rotation mixing speed constant, do not open vacuum and stir 30min slowly, period needs the dry powder on revolution and rotation paddle to scrape in agitator tank, after confirming each powder complete wetting, be evacuated to-90kPa, revolve round the sun 30 revs/min, rotation 1200 revs/min, after stirring 210min, once add SBR emulsion 154g, revolve round the sun 20 revs/min, rotation 600 revs/min, slowly rotating speed is adjusted after stirring 10min to revolution 30 revs/min, rotation 1200 revs/min, stir 60min, add 150g 1-METHYLPYRROLIDONE, adjustment rotating speed is to revolution 20 revs/min, rotation 600 revs/min, slowly slurry viscosity is surveyed after mixing 30min, viscosity is adjusted to 1500-4500 mPas, before discharging, after only opening revolution vacuum stirring 30min slowly, use 150 object steel screen filtration dischargings.
embodiment 4:
As shown in Figure 3, positive pole stirring technique: polyvinylidene fluoride, conductive carbon black, electrically conductive graphite and nickel-cobalt-manganese ternary material are contained in respectively in pallet, is put in baking oven at 120 DEG C, toasts cooling after 2 hours.Successively by 128g polyvinylidene fluoride, 145g conductive carbon black, 29g electrically conductive graphite and 5.5kg nickel-cobalt-manganese ternary material, be put in the agitator tank of 10L, do not open vacuum and stir 30min slowly, revolve round the sun 20 revs/min, rotation 600 revs/min, after each powder mixes, after adding the 1-METHYLPYRROLIDONE of 3.5kg, revolution and rotation mixing speed constant, continue to stir 30min slowly, period needs the dry powder on revolution and rotation paddle to scrape in agitator tank, after confirming each powder complete wetting, be evacuated to-90kPa, revolve round the sun 33 revs/min, rotation 1300 revs/min, stir 210min.Slurry viscosity, at 3000-6000 mPas, before discharging, after only opening revolution vacuum stirring 30min slowly, uses 150 object steel screen filtration dischargings.
As shown in Figure 4, negative pole stirring technique: successively by 50 sodium carboxymethylcellulose pyces, 76g conductive carbon black and 3.6kg Delanium are put in the agitator tank of 10L, do not open vacuum and stir 30min slowly, revolve round the sun 20 revs/min, rotation 600 revs/min, after each powder mixes, add the deionized water of 5.1kg, revolution and rotation mixing speed constant, do not open vacuum and stir 30min slowly, period needs the dry powder on revolution and rotation paddle to scrape in agitator tank, after confirming each powder complete wetting, be evacuated to-90kPa, revolve round the sun 30 revs/min, rotation 1200 revs/min, after stirring 210min, once add SBR emulsion 137g, revolve round the sun 20 revs/min, rotation 600 revs/min, slowly rotating speed is adjusted after stirring 10min to revolution 30 revs/min, rotation 1200 revs/min, stir 60min, add 150g 1-METHYLPYRROLIDONE, adjustment rotating speed is to revolution 20 revs/min, rotation 600 revs/min, slowly slurry viscosity is surveyed after mixing 30min, viscosity is adjusted to 1500-4500 mPas, before discharging, after only opening revolution vacuum stirring 30min slowly, use 150 object steel screen filtration dischargings.
embodiment 5:
As shown in Figure 3, positive pole stirring technique: polyvinylidene fluoride, conductive carbon black, electrically conductive graphite and nickel-cobalt-manganese ternary material are contained in respectively in pallet, is put in baking oven at 120 DEG C, toasts cooling after 2 hours.Successively by 103g polyvinylidene fluoride, 115g conductive carbon black, 29g electrically conductive graphite and 5.5kg nickel-cobalt-manganese ternary material, be put in the agitator tank of 10L, do not open vacuum and stir 30min slowly, revolve round the sun 20 revs/min, rotation 600 revs/min, after each powder mixes, after adding the 1-METHYLPYRROLIDONE of 3.3kg, revolution and rotation mixing speed constant, continue to stir 30min slowly, period needs the dry powder on revolution and rotation paddle to scrape in agitator tank, after confirming each powder complete wetting, be evacuated to-90kPa, revolve round the sun 33 revs/min, rotation 1300 revs/min, stir 210min.Slurry viscosity, at 3000-6000 mPas, before discharging, after only opening revolution vacuum stirring 30min slowly, uses 150 object steel screen filtration dischargings.
As shown in Figure 4, negative pole stirring technique: successively by 38g sodium carboxymethylcellulose, 56g conductive carbon black and 3.6kg Delanium are put in the agitator tank of 10L, do not open vacuum and stir 30min slowly, revolve round the sun 20 revs/min, rotation 600 revs/min, after each powder mixes, add the deionized water of 4.8kg, revolution and rotation mixing speed constant, do not open vacuum and stir 30min slowly, period needs the dry powder on revolution and rotation paddle to scrape in agitator tank, after confirming each powder complete wetting, be evacuated to-90kPa, revolve round the sun 30 revs/min, rotation 1200 revs/min, after stirring 210min, once add SBR emulsion 112g, revolve round the sun 20 revs/min, rotation 600 revs/min, slowly rotating speed is adjusted after stirring 10min to revolution 30 revs/min, rotation 1200 revs/min, stir 60min, add 150g 1-METHYLPYRROLIDONE, adjustment rotating speed is to revolution 20 revs/min, rotation 600 revs/min, slowly slurry viscosity is surveyed after mixing 30min, viscosity is adjusted to 1500-4500 mPas, before discharging, after only opening revolution vacuum stirring 30min slowly, use 150 object steel screen filtration dischargings.
comparative example 1:
Positive pole stirring technique: polyvinylidene fluoride, conductive carbon black, electrically conductive graphite and nickel-cobalt-manganese ternary material are contained in respectively in pallet, is put in baking oven at 120 DEG C, toasts cooling after 2 hours.147g polyvinylidene fluoride is put in the agitator tank of 10L, adds the 1-METHYLPYRROLIDONE of 3.8kg, do not open vacuum and stir slowly, after polyvinylidene fluoride complete wetting, be evacuated to-90kPa, revolve round the sun 30 revs/min, rotation 800 revs/min, stir 360min.Add in agitator tank by 59g electrically conductive graphite and 176g conductive carbon black, revolve round the sun 20 revs/min, rotation 500 revs/min, stir 10min, after positive conductive agent complete wetting, adjustment rotating speed is to revolution 33 revs/min, and rotation 1300 revs/min, stirs 120min.5.5kg nickel-cobalt-manganese ternary material is added in agitator tank at twice, add 50% of total amount at every turn, need to stir 10min slowly after feeding in raw material at every turn, revolve round the sun 20 revs/min, rotation 500 revs/min, after confirming powder complete wetting, adjustment rotating speed is to revolution 33 revs/min, rotation 1300 revs/min, stirs 180min.Slurry viscosity, at 3000-6000 mPas, before discharging, after only opening revolution vacuum stirring 30min slowly, uses 150 object steel screen filtration dischargings.
Negative pole stirring technique: be put in the agitator tank of 10L by 57g sodium carboxymethylcellulose, adds the deionized water of 5.4kg, does not open vacuum and stirs slowly, after sodium carboxymethylcellulose complete wetting, be evacuated to-90kPa, revolve round the sun 30 revs/min, rotation 800 revs/min, stirs 360min.96g conductive carbon black is added in agitator tank at twice, adds 50% of total amount at every turn, revolve round the sun 20 revs/min, rotation 500 revs/min, stirs 10min, after conductive carbon black complete wetting, adjustment rotating speed is to revolution 30 revs/min, and rotation 1200 revs/min, stirs 120min.3.6kg Delanium average mark is added in agitator tank three times, needs slowly to stir 10min after feeding in raw material at every turn, revolve round the sun 20 revs/min, rotation 500 revs/min, after confirming powder complete wetting, adjustment rotating speed is to revolution 30 revs/min, rotation 1200 revs/min, stirs 180min.Once add SBR emulsion 154g, revolve round the sun 20 revs/min, rotation 600 revs/min, adjusts rotating speed to revolution 30 revs/min, rotation 1200 revs/min after stirring 10min slowly, stir 60min, add 150g 1-METHYLPYRROLIDONE, the extremely revolution 20 revs/min of adjustment rotating speed, rotation 600 revs/min, slowly survey slurry viscosity after mixing 30min, viscosity is 1500-4500 mPas.Before discharging, after only opening revolution vacuum stirring 30min slowly, use 150 object steel screen filtration dischargings.
After anode and cathode slurry is ready to, produce battery core through following operation more respectively.Operation is as follows: put in storage after stirring pulping-coating-pair roller-itemize-welding rubberizing-winding-survey short circuit-back welding-slot rolling-survey short circuit-baking-fluid injection-shelve-change into-shelve-partial volume-shelve-voltage internal resistance grouping, also can prepare by other operations, its preparation method is known to the skilled person.
Test the comprehensive electrochemical of the battery core that different pulping process obtains.
1. high rate performance
1. 1C constant current constant voltage is charged to 4.2V, by electric current 0.05C
2. 5min is shelved
3. use 1C/5C/10C/15C/20C/25C/30C to be discharged to 2.75V respectively, shelve after different multiplying electric discharge
Time unification is 20min.Table 1 and table 2 are that the different high rate performance of embodiment under identical discharge system compares.
Table 1 battery core normal temperature high rate performance contrast list
| Electric current | Comparative example 1 | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| 1C | 100% | 100% | 100% | 100% | 100% | 100% |
| 5C | 95% | 96% | 96% | 97% | 95% | 94% |
| 10C | 98% | 99% | 99% | 101% | 99% | 97% |
| 15C | 99% | 100% | 100% | 101% | 100% | 98% |
| 20C | 98% | 99% | 100% | 101% | 98% | 96% |
| 25C | 96% | 98% | 99% | 102% | 90% | 77% |
| 30C | 93% | 94% | 95% | 98% | 82% | 50% |
The contrast of table 2 battery core normal temperature electric discharge mean voltage
| Electric current | Comparative example 1 | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| 1C | 3.655 | 3.665 | 3.668 | 3.67 | 3.666 | 3.663 |
| 5C | 3.541 | 3.558 | 3.56 | 3.572 | 3.563 | 3.559 |
| 10C | 3.441 | 3.452 | 3.458 | 3.465 | 3.456 | 3.451 |
| 15C | 3.350 | 3.371 | 3.376 | 3.385 | 3.374 | 3.372 |
| 20C | 3.264 | 3.291 | 3.294 | 3.301 | 3.294 | 3.287 |
| 25C | 3.181 | 3.21 | 3.214 | 3.221 | 3.172 | 3.151 |
| 30C | 3.087 | 3.108 | 3.116 | 3.127 | 3.056 | 3.02 |
As can be seen from table 1 and table 2, both positive and negative polarity adopts different proportionings, and the consumption of conductive agent directly affects high rate performance and the electric discharge mean voltage platform of obtained battery core.The battery core multiplying power discharging capability retention wherein adopting embodiment 3 obtained is maximum, and the mean voltage platform of electric discharge is the highest, and namely battery core has stronger power output.
2. 60 DEG C of 7 days high-temperature storage performances experiments
1. 1C constant-current constant-voltage charging is to 4.2V, cut-off current 0.05C;
2. 5min is shelved;
3. 1C constant-current discharge is to 2.75V;
4. 5min is shelved;
5. 1C constant-current constant-voltage charging is to 4.2V, cut-off current 0.05C;
6. put into temperature be 60 ± 2 DEG C baking oven store 7 days;
7. by the battery normal temperature shelf taken out from baking oven 4 hours;
8. 1C constant-current discharge is to 2.75V (residual capacity; )
9. 5min is shelved;
10. 1C constant-current constant-voltage charging is to 4.2V, cut-off current 0.05C;
Shelve 5min;
1C constant-current discharge is to 2.75V (recovery capacity).
The capability retention of the battery core that table 3 embodiment and comparative example obtain after high-temperature storage
| Different embodiment and comparative example | The remaining rate of capacity | Capacity restoration rate |
| Comparative example 1 | 88% | 96% |
| Embodiment 1 | 91% | 98% |
| Embodiment 2 | 91% | 99% |
| Embodiment 3 | 92% | 99% |
| Embodiment 4 | 91% | 99% |
| Embodiment 5 | 91% | 98% |
As can be seen from Table 3, after the battery core adopting embodiment obtained stores through 60 DEG C for 7 days, capability retention comparatively comparative example is higher, and high-temperature storage performance is better.After wherein adopting the obtained battery core of embodiment 3 within 7 days, to store through 60 DEG C, the remaining rate of capacity is 92%, and capacity restoration rate is 99%.
3. cycle performance
Test adopts embodiment 3 and comparative example to obtain the cycle performance of battery core respectively
1. 5C constant current constant voltage is charged to 4.2V, by electric current 0.05C
2. 30min is shelved
3. 10C is discharged to 2.75V
4. 30min is shelved
5. circulate 600 times, 1. initial work step is
As shown in Figure 5, the battery core that curve representative above adopts embodiment 3 obtained, the battery core that curve representative below adopts the method for comparative example obtained, the cyclic curve of 5C charging 10 electric discharge of the battery core adopting embodiment 3 obtained is more level and smooth, show thus, the charge-discharge performance being prepared lithium ion battery by anode and cathode slurry of the present invention is more stable, and 600 times circulation volume conservation rate can remain on more than 92%.
4. the dispersive property of cathode size
Use the slurry of Hegman grind gage to different embodiment and comparative example to carry out fineness grade test, to judge the dispersion effect of this method, result is as shown in table 4.
Make to carry out solid content test to the slurry of different embodiment and comparative example with the following method:
Different slurry is respectively charged in 100ml graduated cylinder, be placed in that temperature is 23 DEG C, relative humidity is the climatic chamber of 45%, place after 24 hours and again solid content test is carried out to 15mm place, graduated cylinder top layer slurry, pass judgment on the stability of situation of change to slurry of placing slurry solid content before and after 24 hours, test result is as shown in table 4 below.
Table 4 slurry curing amount contrast table
| Different embodiment and comparative example | Slurry is numbered | Fineness/micron | Place solid content (%) before 24 hours | Place solid content (%) after 24 hours |
| Embodiment 1 | S1 | 30 | 38.9 | 38.5 |
| Embodiment 2 | S2 | 30 | 39.9 | 39.4 |
| Embodiment 3 | S3 | 35 | 41.3 | 40.9 |
| Embodiment 4 | S4 | 35 | 42.4 | 42.0 |
| Embodiment 5 | S5 | 35 | 43.8 | 43.3 |
| Comparative example 1 | D1 | 45 | 41.2 | 35.6 |
As can be seen from Table 4, the slurry fineness obtained by embodiment is little, and after shelving 24h under certain humiture, the change of slurry solid content is very little.
In sum, adopt anode and cathode slurry dispersion stabilization of the present invention good, obtained battery core high rate performance is high, good cycle, and high-temperature storage performance is good, and production efficiency is greatly improved, and mixing time shortens over half.
Finally should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; although done to explain to the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement, and not depart from essence and the scope of technical solution of the present invention.
Claims (9)
1. a preparation method for lithium ion battery plus-negative plate slurry, is characterized in that: cathode size comprises following preparation process:
A, the cathode conductive agent of powdery, negative electrode active material and anti-settling dispersant are put into agitator tank successively stir;
B, after each powder in steps A mixes, add solvent, continue to stir, by each powder complete wetting;
C, add in agitator tank after water-base cement and continue to stir;
D, until the material stirring in step C evenly after, adjusting viscosity;
Wherein, anode sizing agent comprises following preparation process:
1) the positive conductive agent of powdery, positive active material and high polymer binder are added in agitator tank stir;
2) then in agitator tank, add organic solvent, stir, until flour complete wetting;
3) adjusting viscosity;
Wherein, the concrete preparation process of described cathode size is as follows:
A, first the cathode conductive agent of powdery, negative electrode active material and anti-settling dispersant are put into agitator tank successively, do not open vacuum, open simultaneously revolution and rotation carry out dry powder stirring 15 ~ 90min, the rotating speed of revolution is 15 ~ 30 revs/min, and the rotating speed of rotation is 500 ~ 1000 revs/min;
B, after powder each in steps A mixes, solvent is added in agitator tank, setting revolution rotating speed is 15 ~ 30 revs/min, rotation rotating speed is 500 ~ 1000 revs/min, continue stirring 10 ~ 30min, dry powder on revolution and rotation paddle is scraped in agitator tank by period, confirms each powder complete wetting;
C, be evacuated to-99kPa ~-90kPa, setting revolution rotating speed is 25 ~ 35 revs/min, rotation rotating speed is 1000 ~ 1500 revs/min, after stirring 120 ~ 240min, add water-base cement, resetting revolution rotating speed is 15 ~ 25 revs/min, rotation rotating speed is 500 ~ 800 revs/min, adjust rotating speed after stirring 5 ~ 15min to revolution 20 ~ 35 revs/min, rotation 1000 ~ 1500 revs/min, stir 40 ~ 90min;
D, add organic solvent, adjustment rotating speed is to revolution 15 ~ 25 revs/min, and rotation 500 ~ 800 revs/min, stirs 10 ~ 30min, utilize solvent adjustment slurry viscosity at 1500-4000 mPas.
2. the preparation method of a kind of lithium ion battery plus-negative plate slurry according to claim 1, is characterized in that: in described step D, after viscosity mixes up, and continues out vacuum revolution 10 ~ 30 revs/min and stirs 10-30min, and then 150 order steel are sieved excessively leaches material.
3. the preparation method of a kind of lithium ion battery plus-negative plate slurry according to claim 1, it is characterized in that: in described steps A, cathode conductive agent comprises any one or the wherein several mixtures in conductive carbon black, electrically conductive graphite, carbon fiber and carbon nano-tube, described negative electrode active material comprises any one or wherein several mixtures in Delanium, native graphite, soft carbon and hard carbon, described anti-settling dispersant is sodium carboxymethylcellulose, and in described step C, water-base cement is SBR emulsion.
4. the preparation method of a kind of lithium ion battery plus-negative plate slurry according to claim 1, is characterized in that: anode sizing agent comprises following preparation process:
1), the positive conductive agent of powdery, positive active material and high polymer binder are put into agitator tank successively, do not open vacuum, open simultaneously revolution and rotation carry out dry powder stir 15 ~ 90min, revolve round the sun rotating speed be 15 ~ 30 revs/min, rotation rotating speed is 500 ~ 1000 revs/min;
2), after powder each in step 1) mixes, add organic solvent, setting revolution rotating speed is 15 ~ 30 revs/min, and rotation rotating speed is 500 ~ 1000 revs/min, continues stirring 10 ~ 30min, dry powder on revolution and rotation paddle is scraped in agitator tank by period, after each powder complete wetting, be evacuated to-99kPa ~-90kPa, adjustment revolution rotating speed is 25 ~ 35 revs/min, rotation rotating speed is 1000 ~ 1500 revs/min, stirs 120 ~ 240min;
3), utilize organic solvent to regulate slurry viscosity at 3000-6000 mPas, after only opening revolution vacuum stirring 30min slowly, use 150 object steel screen filtration dischargings.
5. the preparation method of a kind of lithium ion battery plus-negative plate slurry according to claim 1, it is characterized in that: the preparation process 1 of described anode sizing agent) before, first positive conductive agent, positive active material and high polymer binder are contained in pallet respectively, are put in baking oven 100 ~ 150 DEG C of bakings 1 ~ 5 hour.
6. the preparation method of a kind of lithium ion battery plus-negative plate slurry according to claim 1, it is characterized in that: in described step 1), positive conductive agent comprises any one or the wherein several mixtures in conductive carbon black, electrically conductive graphite, carbon fiber and carbon nano-tube, described positive active material is any one or wherein several mixtures in cobalt acid lithium, LiMn2O4, nickle cobalt lithium manganate and LiFePO4, and described high polymer binder is polyvinylidene fluoride.
7. the preparation method of a kind of lithium ion battery plus-negative plate slurry according to claim 1, it is characterized in that: described solvent is deionized water, described organic solvent is 1-METHYLPYRROLIDONE.
8. the preparation method of a kind of lithium ion battery plus-negative plate slurry according to claim 7, is characterized in that: described anode sizing agent is made up of the material of following weight ratio: positive active material: positive conductive agent: high polymer binder: 1-METHYLPYRROLIDONE=100:0.05 ~ 15:0.2 ~ 10:60 ~ 160.
9. the preparation method of a kind of lithium ion battery plus-negative plate slurry according to claim 7, is characterized in that: described cathode size is made up of the material of following weight ratio: negative electrode active material: cathode conductive agent: anti-settling dispersant: water-base cement: deionized water: 1-METHYLPYRROLIDONE=100:0.05-10:0.05-8:0.3-10:100-200:0.5-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310212910.1A CN103280566B (en) | 2013-05-31 | 2013-05-31 | Preparation methods of positive and negative pole pastes for lithium ion batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310212910.1A CN103280566B (en) | 2013-05-31 | 2013-05-31 | Preparation methods of positive and negative pole pastes for lithium ion batteries |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103280566A CN103280566A (en) | 2013-09-04 |
| CN103280566B true CN103280566B (en) | 2015-07-08 |
Family
ID=49063044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310212910.1A Active CN103280566B (en) | 2013-05-31 | 2013-05-31 | Preparation methods of positive and negative pole pastes for lithium ion batteries |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103280566B (en) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103618063B (en) * | 2013-09-26 | 2016-05-11 | 奇瑞新能源汽车技术有限公司 | A kind of lithium ion power battery cathode slurry and close paste-making method |
| CN104681790B (en) * | 2013-11-27 | 2017-03-08 | 万向一二三股份公司 | A kind of preparation method of lithium ion power battery cathode material slurry |
| CN104766949B (en) * | 2014-01-08 | 2017-05-03 | 中山天贸电池有限公司 | Processing method of lithium ion battery negative electrode slurry |
| CN103715417B (en) * | 2014-01-09 | 2016-05-25 | 合肥恒能新能源科技有限公司 | The preparation method of a kind of lithium battery anode active material and coating sizing-agent thereof |
| CN105529434A (en) * | 2014-09-29 | 2016-04-27 | 凤凰新能源(惠州)有限公司 | High-rate high-capacity lithium ion positive electrode material |
| CN104319369A (en) * | 2014-11-25 | 2015-01-28 | 上海动力储能电池系统工程技术有限公司 | Battery paste and lithium ion secondary battery made of battery paste |
| CN104577071B (en) * | 2015-01-28 | 2016-12-07 | 山东齐星新能源科技有限责任公司 | A kind of lithium ion battery dry powder pulping process |
| CN105185951A (en) * | 2015-08-24 | 2015-12-23 | 深圳市斯诺实业发展有限公司 | Preparation method of lithium battery cathode slurry |
| CN105489844A (en) * | 2015-11-07 | 2016-04-13 | 合肥国轩高科动力能源有限公司 | Preparation method of lithium ion power battery negative electrode slurry |
| CN106784633A (en) * | 2015-11-25 | 2017-05-31 | 深圳市沃特玛电池有限公司 | The preparation method of lithium ion battery cathode slurry |
| CN106404584A (en) * | 2016-04-15 | 2017-02-15 | 南京国轩电池有限公司 | Evaluation method for dry mixing uniformity of admixture slurry powder used for lithium ion battery |
| CN106340649A (en) * | 2016-10-27 | 2017-01-18 | 深圳市沃特玛电池有限公司 | Preparation method of lithium ferric phosphate cathode slurry |
| CN106784609A (en) * | 2017-03-10 | 2017-05-31 | 江西佳沃新能源有限公司 | A kind of cathode of lithium battery blank preparation technicses |
| CN106992318A (en) * | 2017-04-17 | 2017-07-28 | 广西卓能新能源科技有限公司 | A kind of lithium-ion-power cell and preparation method thereof |
| CN107731564A (en) * | 2017-06-21 | 2018-02-23 | 中国科学院苏州纳米技术与纳米仿生研究所南昌研究院 | A kind of preparation method of double electric layers supercapacitor organic system electrode slurry |
| CN107731563A (en) * | 2017-06-21 | 2018-02-23 | 中国科学院苏州纳米技术与纳米仿生研究所南昌研究院 | A kind of preparation method of various dimensions conductive agent composite conducting slurry |
| JP7022525B2 (en) * | 2017-07-04 | 2022-02-18 | 第一工業製薬株式会社 | An electrode coating liquid composition, an electrode for a power storage device produced by using the electrode coating liquid composition, and a power storage device provided with the electrode. |
| CN107617351A (en) * | 2017-07-31 | 2018-01-23 | 珠海格力电器股份有限公司 | Stirring method and application of lithium ion battery cathode and lithium ion battery |
| CN107768651A (en) * | 2017-10-25 | 2018-03-06 | 中盐安徽红四方锂电有限公司 | A kind of preparation method of the water-based composite mortar of LiFePO4 containing VGCF |
| CN108183231A (en) * | 2017-11-30 | 2018-06-19 | 深圳市卓能新能源股份有限公司 | Lithium ion battery with high charging upper limit voltage and preparation method thereof |
| CN108172750A (en) * | 2017-12-07 | 2018-06-15 | 银隆新能源股份有限公司 | The preparation method of graphite negative electrode of lithium ion battery highly viscous slurry |
| CN108417812A (en) * | 2018-03-31 | 2018-08-17 | 广东天劲新能源科技股份有限公司 | A kind of nickel cobalt lithium aluminate and lithium manganese oxide soft package battery |
| CN109378446A (en) * | 2018-11-12 | 2019-02-22 | 天津银隆新能源有限公司 | The preparation method of lithium ion battery anode slurry |
| CN111384458A (en) * | 2019-12-25 | 2020-07-07 | 南通硬派锂电池有限公司 | Method for inhibiting capacity attenuation of lithium manganate lithium ion battery |
| CN111081984A (en) * | 2019-12-31 | 2020-04-28 | 东莞市沃泰通新能源有限公司 | Preparation method of battery slurry and battery slurry |
| CN111403801B (en) * | 2020-03-23 | 2023-08-29 | 孚能科技(赣州)股份有限公司 | Lithium ion battery and preparation method thereof |
| CN112234198A (en) * | 2020-09-15 | 2021-01-15 | 深圳市拓邦锂电池有限公司 | Lithium ion battery anode slurry and preparation method thereof |
| CN112151743B (en) * | 2020-09-27 | 2022-06-28 | 蜂巢能源科技有限公司 | Pore-forming method of thick electrode, product and application thereof |
| CN112201766B (en) * | 2020-09-30 | 2021-12-17 | 蜂巢能源科技有限公司 | Negative electrode slurry and preparation method and application thereof |
| CN112687887A (en) * | 2020-12-29 | 2021-04-20 | 长沙迅洋新材料科技有限公司 | Magnesium metal air battery anode catalyst and continuous coating preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1835260A (en) * | 2005-03-17 | 2006-09-20 | 深圳市比克电池有限公司 | Anode slarry prepn. process of Li ion cell, anode sheet and Li ion cell |
| CN102088077A (en) * | 2010-12-25 | 2011-06-08 | 东莞市良源电池科技有限公司 | Preparation method of cathode of lithium ion battery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2493375A (en) * | 2011-08-03 | 2013-02-06 | Leclancha S A | Aqueous slurry for battery electrodes |
-
2013
- 2013-05-31 CN CN201310212910.1A patent/CN103280566B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1835260A (en) * | 2005-03-17 | 2006-09-20 | 深圳市比克电池有限公司 | Anode slarry prepn. process of Li ion cell, anode sheet and Li ion cell |
| CN102088077A (en) * | 2010-12-25 | 2011-06-08 | 东莞市良源电池科技有限公司 | Preparation method of cathode of lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103280566A (en) | 2013-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103280566B (en) | Preparation methods of positive and negative pole pastes for lithium ion batteries | |
| CN106207129B (en) | A kind of preparation method of anode slurry of high-rate | |
| CN106654166B (en) | The homogenate technique and anode pole piece of lithium ion battery anode glue size, lithium ion battery | |
| CN105140521B (en) | A kind of preparation method of cathode of lithium battery slurry | |
| CN107275574A (en) | Preparation method, lithium battery anode piece and the lithium battery of positive pole aqueous slurry | |
| CN106299250B (en) | Preparation method of electrode slurry | |
| CN106299280B (en) | Preparation method of high-capacity lithium ion battery anode slurry | |
| CN104577071A (en) | Dry-powder pulping method of lithium-ion battery | |
| CN104752702B (en) | Cathode material of lithium sulphur battery, preparation method of cathode material, cathode of lithium sulphur battery and lithium sulphur battery | |
| CN105161676A (en) | Preparation method for lithium iron phosphate cathode slurry | |
| CN105932229A (en) | Preparation method for high-capacity lithium ion battery negative electrode tab | |
| CN102148363A (en) | Preparation method of stable slurry of lithium ion battery | |
| CN101071859A (en) | Lithium cell anode active substance, anode dressing and its preparing method | |
| CN108923025B (en) | Efficient preparation process of lithium ion battery slurry | |
| CN111883736A (en) | Preparation method of lithium ion battery anode slurry | |
| CN106816584B (en) | A kind of iron manganese phosphate for lithium class material and preparation method thereof and cell size and anode and lithium battery | |
| CN105047858A (en) | Preparation method for lithium cobalt oxide cathode slurry | |
| CN104795541A (en) | Lithium-ion battery negative electrode slurry preparation method | |
| CN110504481A (en) | Salt mixes polymer-type composite solid electrolyte and preparation method thereof, lithium battery | |
| CN109786714B (en) | Preparation method of mixed positive electrode slurry based on lithium manganate material | |
| CN106784794A (en) | A kind of preparation method of pulp of lithium ion battery | |
| CN105206790A (en) | Preparation method for lithium battery anode slurry doped with tin powder | |
| CN109390551A (en) | A kind of preparation method of nanometer-material-modified fluorination carbon electrode material | |
| CN105226267B (en) | Three dimensional carbon nanotubes modification spinel nickel lithium manganate material and its preparation method and application | |
| CN102064326B (en) | The agent of lithium ion battery plus-negative plate dispersion of materials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170307 Address after: 523000 Guangdong Province, Dongguan City Shipai town to the West Village Songyuan 5 Road No. 1 Patentee after: Dongguan Cade new energy Co., Ltd. Address before: 523330 Guangdong Province, Dongguan City Shipai town to the West Village Songyuan 5 Road No. 1 Patentee before: Guangdong K-TECH Energy Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |