CN105932297B - A kind of carbon nanotube conducting coating collector and its preparation process - Google Patents
A kind of carbon nanotube conducting coating collector and its preparation process Download PDFInfo
- Publication number
- CN105932297B CN105932297B CN201610410998.1A CN201610410998A CN105932297B CN 105932297 B CN105932297 B CN 105932297B CN 201610410998 A CN201610410998 A CN 201610410998A CN 105932297 B CN105932297 B CN 105932297B
- Authority
- CN
- China
- Prior art keywords
- carbon nanotube
- coating
- nanotube conducting
- collector
- conducting coating
- 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
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- 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
- H01M4/625—Carbon or graphite
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
-
- 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
Abstract
The invention discloses a kind of carbon nanotube conducting coating collector, including metal collector and carbon nanotube conducting coating, the carbon nanotube conducting coating is coated in metal collector surface.The thickness of the carbon nanotube conducting coating is 1 ~ 50 μm, and surface is provided with netted micro-cracked structure and rough porous structure.The present invention also provides a kind of carbon nanotube conducting coating afflux preparation process.The carbon nanotube conducting coating of the present invention provides good conductive network for electrode, it is particularly evident for the poor electrode material of electric conductivity, simultaneously, make carbon nanotube conducting coating by preparing the different electrocondution slurry of dispersion effect surface forms intensive micro-crack after the drying, electrode coating can be embedded between micro-crack, greatly increase the contact area between electrode coating and conductive coating, improve the binding force between collector, the internal resistance for reducing battery improves service life and the high rate capability of battery.
Description
Technical field
The present invention relates to technical field of lithium ion, more particularly to a kind of carbon nanotube conducting coating collector and its
Preparation process.
Background technology
Lithium ion battery is as a kind of clean recyclable regenerative energy, research and using the pass for being constantly subjected to people
Note.Electrode material of the existing electrodes of lithium-ion batteries by collector and coated in collection liquid surface is constituted.It is now commercialized
Using electrolysis Cu foils or Al foils, it is several to be mainly divided into dual light, two-sided hair, single side hair, double-sided coarsening etc. for affluxion body in lithium ion batteries
Type.To improve the binding force of electrode material and collector, the binder of higher proportion is used.In battery in high magnification charge and discharge
As lithium ion is embedded in electrode material rapidly and deviates from cyclic process, the volume of electrode material is made to generate violent expansion
And contraction, electrode material is damaged, the performance of battery is made to decline rapidly.Meanwhile the conduction of anode material for lithium-ion batteries
Property is poor, causes the internal resistance of battery to seriously affect the performance of battery, there is also same for novel negative material such as lithium titanate etc.
The problem of.Therefore the lithium ion battery produced by existing electrodes of lithium-ion batteries, internal resistance is higher, high-rate discharge ability compared with
Difference, cyclic process internal resistance raising is very fast, cycle life is also poor.
To solve the above-mentioned problems, research worker is mainly improved in the following manner：（1）Modified positive and negative anodes activity
Material；（2）Improve conductive agent；（3）Improve electrolyte and diaphragm；（4）Improve cell making process；（5）Collector is changed
Into.It is wherein most quick to be improved to collector, while significant effect, wherein the widest with conductive coating collector application
It is general.
However conductive coating collector can not greatly improve the contact between electrode coating and collector in itself
Area, while blocked up conductive coating can influence the conductive effect of electrode totality this phenomenon, it is suppressed that conductive coating collector
Further increase the ability of the electrode material electrodes conduct performance of electric conductivity difference.How to improve to the greatest extent electrode coating with
Contact area between collector, influence of the reduction conductive coating thickness to electrode overall conductive effect, further increases electrode
Electric conductivity seem extremely important.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of novel carbon nanotube conducting coating affluxs
Body, improve electrode electric conductivity while, by make conductive coating surface generate micro-cracked structure, improve electrode coating with
It is blocked up to electrode to weaken conductive coating to improve the binding force of electrode material and metal collector for the contact area of conductive coating
The influence of overall conductive performance.
In order to solve the above technical problems, the technical solution used in the present invention is：
A kind of carbon nanotube conducting coating collector, including metal collector and carbon nanotube conducting coating, the gold
It is copper foil or aluminium foil to belong to current collector material；The carbon nanotube conducting coating be coated in metal collector surface, thickness be 1 ~
50 μm, surface is provided with netted micro-cracked structure and rough porous structure.
Further, the closeness of the micro-cracked structure is imitated with the thickness of the carbon nanotube conducting coating and dispersion
Fruit is inversely proportional, and the width of the micro-cracked structure is directly proportional to the carbon nanotube conducting coating layer thickness, the rough porous
The closeness of structure is directly proportional to the dispersion effect.
Further, the width of the micro-cracked structure maximum of the carbon nanotube conducting coating surface is 5 ~ 200 μm.
When binder is aqueous binders, metal collector material is using copper foil, when binder is oiliness binder
Metal collector material is to use aluminium foil.
Another aspect of the present invention provides a kind of preparation process of carbon nanotube conducting coating collector as mentioned, including
Following steps：
（1）Carbon nanotube or carbon nanotube and one or more conductive agents are weighed as raw material, and respectively to original
Material carries out drying pretreatment, and the temperature control of drying time 3h, drying are 200 DEG C ~ 300 DEG C；
（2）Surface cleaning pretreatment is carried out to the metal collector of selection, removes influence slurry of the surface including greasy dirt
Expect the substance combined with metal collector；
（3）By step（1）Raw material mix according to a certain percentage with binder, dispersant and solvent after middle pretreatment,
5 ~ 20h is stirred, it is spare that the different conductive coating slurry of dispersion effect is made；
（4）To step（3）In conductive coating slurry obtained carry out vacuum degassing bubble processing, the bubble removing time is 5 ~
10min；
（5）By step（4）1 ~ 100 μm of different coating is arranged using coating machine in bubble removing treated conductive coating slurry
Thickness is coated on collection liquid surface, dries 6 ~ 12h, the temperature control of drying is 60 DEG C ~ 120 DEG C；
（6）The different collector of conductive coating thickness is made after drying, it is spare as affluxion body in lithium ion batteries.
Further, step（3）The ethyl alcohol that the solvent is NMP, deionized water or volume fraction are 20 ~ 40% is molten
The solid content of liquid, the conductive coating slurry is 2 ~ 20%.
Further, step（3）The dispersion effect of conductive coating slurry and the dosage of dispersant and mixing time
It is directly proportional.
Further, step（5）Carbon nanotube conducting coating collector after the drying and processing without compaction treatment,
Retain conductive coating rough surface porous structure.
Further, the component of the carbon nanotube conducting coating includes by weight percentage：Carbon nanotube 50% ~ 99%,
Binder 1% ~ 10%, conductive agent 0% ~ 40%, dispersant 0% ~ 10%.
Further, the carbon nanotube includes single-walled carbon nanotube, multi-walled carbon nanotube and modified carbon nano-tube
It is one or more；The binder is the one or more of aqueous binders or oiliness binder；The conductive agent is conductive charcoal
It is one or more in black, conductive carbon fibre, electrically conductive graphite；The dispersant is TNWDIS, TNADIS, TNDDIS, TNEDIS
In one kind.
The carbon nanotube conducting coating collector is used for lithium ion cell positive or cathode.The lithium ion battery
Positive function of tonic chord material includes the one or more of the positive electrodes such as cobalt acid lithium, LiFePO4, LiMn2O4；The lithium ion battery
Cathode function of tonic chord material includes the one or more of the negative materials such as carbonaceous mesophase spherules, artificial graphite.
The preparation process of the carbon nanotube conducting coating collector of the present invention, thes improvement is that the collector passes through
Use smaller dispersive agent ratio（0%~10%）With binder ratio（1~10%）, dispersant dosage, which is strictly less than, makes carbon nanotube
Fully decentralized optimum amount prepares the different electrocondution slurry of dispersion effect, while the solid content of conductive coating slurry is 2 ~ 20%
Between, so that conductive coating is formed intensive micro-cracked structure after the drying, is provided for electrode main slurry and improve the micro- of binding force
Crackle.The single side thickness of conductive coating is 1 ~ 50 μm, and with the reduction of coating layer thickness, the micro-crack that coating surface is formed is closeer
Collection.The width of the micro-crack maximum on surface is between 5 ~ 200 μm.Carbon nanotube conducting coating collector after drying and processing is not
Compaction treatment is carried out, the shaggy porous structure of conductive coating is retained, improves electrode coating and conductive coating to greatest extent
Contact area.
Compared with prior art, the beneficial effects of the invention are as follows：
1. using major function material of the carbon nanotube as conductive coating, electric conductivity better than existing major part lithium from
Sub- battery conductive agent, unique tubular structure provide good conductive network for electrode, improve electrode and are filled in high magnification
The performance put down.
2. using the binder of small percentage, the electric conductivity of conductive agent is given full play to, has reduced battery to the greatest extent
Internal resistance, improve battery cycle life and high rate performance.
3. coating surface forms intensive micro-cracked structure, the contact surface of electrode function of tonic chord material and conductive coating is increased
Product, improves the binding force of electrode function of tonic chord material and collector, while providing electrode function of tonic chord material and metal collector
Contact point, avoid due to conductive coating is blocked up and caused by monolithic conductive it is not sufficiently effective, increase conductive coating adjust it is thick
Degree, significantly improves the electric conductivity of the electrode of the electrode function of tonic chord material using electric conductivity difference.
4., can be effective to press down in opposite reduction electrode coating in the case of conductive agent content in lithium ion battery
The raising of the internal resistance of cell processed, the surface density of increased electrode function of tonic chord material, improves the capacity of electrode unit area.
Description of the drawings
Fig. 1 is the lithium ion cell electrode sectional view using carbon nanotube conducting coating collector of embodiment.
Fig. 2 is 30 μ m-thick coating surface microstructures of embodiment two；
Fig. 3 is 25 μ m-thick coating surface microstructures of embodiment two；
Fig. 4 is 20 μ m-thick coating surface microstructures of embodiment two；
Fig. 5 is the multi-walled carbon nanotube conductive coating collection liquid surface rough porous structure SEM figures of embodiment two；
Fig. 6 is embodiment two and two AC impedance comparison diagram of comparative example one and comparative example；
Fig. 7 is embodiment two and cycle charge-discharge specific capacity comparison diagram under two different multiplying of comparative example one and comparative example.
It is as shown in the figure：1- metal collectors；2- carbon nanotube conducting coatings；3- electrode coatings；4- micro-cracks.
Specific implementation mode
With reference to embodiment, the present invention is further described, but the present invention is not limited in following embodiment.
The method is conventional method without special instruction.
Embodiment one
A kind of carbon nanotube conducting coating collector, including metal collector 1 and carbon nanotube conducting coating 2, the carbon
Nanotube conductive coating 2 is coated in 1 surface of metal collector.The thickness of the carbon nanotube conducting coating is 1 ~ 50 μm.Institute
The surface for the carbon nanotube conducting coating stated is provided with netted micro-cracked structure 4 and rough porous structure.
The thickness and dispersion effect of the closeness of the micro-cracked structure 4 and the carbon nanotube conducting coating 2 are at anti-
Than the width of the micro-cracked structure 4 is directly proportional to 2 thickness of carbon nanotube conducting coating, the rough porous structure
Closeness it is directly proportional to the dispersion effect.
The width of 4 maximum of micro-cracked structure on 2 surface of carbon nanotube conducting coating is 5 ~ 200 μm.
The electrode coated coating 3 in 2 surface of carbon nanotube conducting coating is used for lithium ion cell positive or cathode,
The lithium ion cell positive function of tonic chord material includes one kind or more of the positive electrodes such as cobalt acid lithium, LiFePO4, LiMn2O4
Kind；The negative electrode of lithium ion battery function of tonic chord material includes one kind or more of the negative materials such as carbonaceous mesophase spherules, artificial graphite
Kind.Electrode coating 3 can be embedded between micro-cracked structure 4, greatly increase electrode coating 3 and carbon nanotube conducting coating 2 it
Between contact area, improve the binding force between collector, greatly reduce the internal resistance of battery, improve the longevity of battery
Life and high rate capability.
The metal collector 1 is selected according to the binder type of use, is made when binder is aqueous binders
It is to use aluminium foil when binder is oiliness binder with copper foil.
Embodiment two
A kind of preparation process of carbon nanotube conducting coating collector selects butadiene-styrene rubber（SBR）And carboxymethyl cellulose
Sodium（CMC）As the binder of conductive coating, multi-walled carbon nanotube is only used as conductive agent, does not add other conductive agents, and
Use 3:3:94 weight ratio modulates electrocondution slurry, while use 20% ethanol solution final conductive coating is starched as solvent
Solid content is expected 6% or so, and specific preparation process is as follows：
（1）Multi-walled carbon nanotube is dried in advance processing, 120 DEG C of dry 12h；It is clear that surface is carried out to metal collector
Clean pretreatment；
（2）CMC is dissolved at 80 DEG C using magnetic stirring apparatus, after CMC is completely dissolved, SBR emulsion is added, continues to stir
Binder solution is made in 0.5h；
（3）Step is added in multi-walled carbon nanotube in four times（2）In manufactured binder solution, it is continuing with magnetic agitation
Device stirs, and per minor tick 1h, and observes the viscosity of slurry, after last time feeds, high-speed stirred 6h；
（4）To step（3）In slurry obtained carry out vacuum degassing bubble processing, the bubble removing time is 10min；
（5）Using infra-red drying vacuum flow-casting coating machine carry out conductive coating coating, coating thickness be 150 μm, 125 μm,
100 μm, 80 DEG C dry 12h, and the carbon nanotube conducting coating collector after drying and processing retains conductive apply without compaction treatment
The coarse porous structure of layer surface (see Fig. 5)；
（6）It is spare as collector after drying.
The conductive coating collection liquid surface that above-described embodiment preparation is observed using super depth of field equipment, as shown in Fig. 2 ~ 4, due to
The evaporation of solvent, slurry volume are shunk, three kinds of different coating thickness formed average thickness be 30 μm, 25 μm, 20 μm of coating knot
Structure.It can be seen that coating forms intensive micro-cracked structure, comparison diagram 2, Fig. 3 and Fig. 4 are it can be found that with coating layer thickness
The width for reducing micro-crack also reduces therewith, while micro-crack is also more intensive.Through measuring the coating micro-crack of 30 μ m-thicks most
General goal width is between 20 ~ 80 μm, while the coating of 25 μm and 20 μ m-thicks is respectively between 10 ~ 40 μm and 10 ~ 30 μm, is micron
Grade positive or negative pole material insertion below provides sufficient space.
The present embodiment uses MCMB (carbonaceous mesophase spherules graphite) negative as function of tonic chord material preparation lithium ion battery
Pole, and be that prepared by button half-cell to electrode with metal lithium sheet.Select aqueous binders SBR and CMC as binder, Super-
P conductive blacks use 2 as conductive agent：2：3：93（SBR：CMC：Super-P：MCMB）Ratio prepare negative electrode slurry, specifically
Preparation method it is as follows：
（1）Pretreatment, 120 DEG C of dry 12h are dried to MCMB and Super-P；
（2）CMC is dissolved at 80 DEG C using magnetic stirring apparatus, after CMC is completely dissolved, SBR emulsion is added, continues to stir
Binder solution is made in 0.5h；
（3）Step is added in Super-P（2）In manufactured binder solution, 1h is dispersed with stirring using ball mill；
（4）MCMB is added in four times, per minor tick 1h, and the viscosity of slurry is observed, suitable deionized water is added,
After last time feeds, continue to stir 6h；
（5）To step（3）In slurry obtained carry out vacuum degassing bubble processing, the bubble removing time is 10min；
（6）Using infra-red drying vacuum flow-casting coating machine step（4）Manufactured negative electrode slurry is applied to above-mentioned prepare
Multi-walled carbon nanotube conductive layer collector on, coating film thickness be 100 μm, 80 DEG C of dry 12h；
（7）To step（5）Electrode after middle drying carries out 25Mpa compaction treatments, dwell time 5min；
（8）Step（6）The entelechy piece of 16mm is made in electrode after middle compaction treatment, then proceedes to 60 DEG C of dry 12h.
Using the anode plate for lithium ionic cell of above-mentioned preparation, button half-cell is installed in glove box under protection of argon gas,
Battery case model 2032；A series of performance tests such as cycle charge-discharge, AC impedance are carried out after battery standing 12h.
Comparative example one
A kind of preparation process of carbon nanotube conducting coating collector, difference lies in do not make with embodiment two for this comparative example
With above-mentioned new current collector.Select aqueous binders SBR and CMC as binder, multi-walled carbon nanotube makes as conductive agent
With 2：2：3：93（SBR：CMC：Multi-walled carbon nanotube：MCMB）Ratio prepare negative electrode slurry, specific preparation method is as follows：
（1）Pretreatment is dried to MCMB and multi-walled carbon nanotube, 120 DEG C of dry 12h, while to metal collector 1
Carry out surface cleaning pretreatment；
（2）CMC is dissolved at 80 DEG C using magnetic stirring apparatus, after CMC is completely dissolved, SBR emulsion is added, continues to stir
Binder solution is made in 0.5h；
（3）Step is added in multi-walled carbon nanotube（2）In manufactured binder solution, 1h is dispersed with stirring using ball mill；
（4）MCMB is added in four times, per minor tick 1h, and the viscosity of slurry is observed, suitable deionized water is added,
After last time feeds, continue to stir 6h；
（5）To step（3）In slurry obtained carry out vacuum degassing bubble processing, the bubble removing time is 10min；
（6）Using infra-red drying vacuum flow-casting coating machine step（4）Manufactured negative electrode slurry is applied to above-mentioned prepare
Multi-walled carbon nanotube conductive layer collector on, coating film thickness be 100 μm, 80 DEG C of dry 12h；
（7）To step（5）Electrode after middle drying carries out 25Mpa compaction treatments, dwell time 5min；
（8）Step（6）The entelechy piece of 16mm is made in electrode after middle compaction treatment, then proceedes to 60 DEG C of dry 12h.
Using the anode plate for lithium ionic cell of above-mentioned preparation, button half-cell is installed in glove box under protection of argon gas,
Battery case model 2032；A series of performance tests such as cycle charge-discharge, AC impedance are carried out after battery standing 12h.
Comparative example two
A kind of preparation process of carbon nanotube conducting coating collector, difference lies in do not make with embodiment two for this comparative example
With above-mentioned new current collector.Select aqueous binders SBR and CMC as binder, Super-P conductive blacks are as conductive
Agent uses 2：2：3：93（SBR：CMC：Super-P：MCMB）Ratio prepare negative electrode slurry, specific solution and comparison
Example one is identical.
Embodiment two and the comparison of the AC impedance of comparative example one and comparative example two are as shown in Figure 6, it can be seen that comparative example one
（Curve longest）And comparative example two（Curve vice-minister）Impedance it is relatively high, with the two compare, embodiment two（Curve is most
It is short）Much smaller, the internal resistance of battery is greatly reduced.
Embodiment two is compared with the charging and discharging capacity variation of comparative example one and comparative example two under different multiplying such as Fig. 7 institutes
Show, it can be seen that specific capacity of the embodiment two under each multiplying power all reaches the maximum value of three, with the increase embodiment of multiplying power
Advantage it is more notable, be 2 ~ 3 times of comparative example specific capacity under 0.5C high magnifications.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by the embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (9)
1. a kind of carbon nanotube conducting coating collector, it is characterised in that：Including metal collector and carbon nanotube conducting coating,
The metal collector material is copper foil or aluminium foil；The carbon nanotube conducting coating is coated in metal collector surface,
Thickness is 1 ~ 50 μm, and surface is provided with netted micro-cracked structure and rough porous structure.
2. carbon nanotube conducting coating collector according to claim 1, it is characterised in that：The micro-cracked structure it is close
Intensity and the thickness and dispersion effect of the carbon nanotube conducting coating are inversely proportional, the width of the micro-cracked structure with it is described
Carbon nanotube conducting coating layer thickness it is directly proportional, the closeness of the rough porous structure is directly proportional to the dispersion effect.
3. carbon nanotube conducting coating collector according to claim 1, it is characterised in that：The carbon nanotube conducting
The width of the micro-cracked structure maximum of coating surface is 5 ~ 200 μm.
4. a kind of preparation process of carbon nanotube conducting coating collector as claimed any one in claims 1 to 3, feature
It is, includes the following steps：
（1）Carbon nanotube or carbon nanotube and one or more conductive agents are weighed as raw material, and respectively to raw material
Drying pretreatment is carried out, the temperature control of drying time 3h, drying are 200 DEG C ~ 300 DEG C；
（2）Surface cleaning pretreatment is carried out to the metal collector of selection, remove influence slurry of the surface including greasy dirt with
The substance that metal collector combines；
（3）By step（1）Raw material mix according to a certain percentage with binder, dispersant and solvent after middle pretreatment, stirring 5
It is spare that the different conductive coating slurry of dispersion effect is made in ~ 20h；
（4）To step（3）In conductive coating slurry obtained carry out vacuum degassing bubble processing, the bubble removing time is 5 ~ 10min；
（5）By step（4）1 ~ 100 μm of different coating thickness is arranged using coating machine in bubble removing treated conductive coating slurry
It is coated on collection liquid surface, dries 6 ~ 12h, the temperature control of drying is 60 DEG C ~ 120 DEG C；
（6）The different collector of conductive coating thickness is made after drying, it is spare as affluxion body in lithium ion batteries.
5. the preparation process of carbon nanotube conducting coating collector according to claim 4, it is characterised in that：Step（3）
The ethanol solution that the solvent is NMP, deionized water or volume fraction are 20 ~ 40%, the consolidating for conductive coating slurry contain
Amount is 2 ~ 20%.
6. the preparation process of carbon nanotube conducting coating collector according to claim 4, it is characterised in that：Step（3）
The dispersion effect of conductive coating slurry is directly proportional to the dosage of dispersant and mixing time.
7. the preparation process of carbon nanotube conducting coating collector according to claim 4, it is characterised in that：Step（5）
It is porous to retain conductive coating rough surface without compaction treatment for carbon nanotube conducting coating collector after the drying and processing
Structure.
8. the preparation process of carbon nanotube conducting coating collector according to claim 4, it is characterised in that：The carbon is received
The component of mitron conductive coating includes by weight percentage：Carbon nanotube 50% ~ 99%, binder 1% ~ 10%, conductive agent 0% ~ 40%,
Dispersant 0% ~ 10%.
9. the preparation process of carbon nanotube conducting coating collector according to claim 4, it is characterised in that：The carbon is received
Mitron includes the one or more of single-walled carbon nanotube, multi-walled carbon nanotube and modified carbon nano-tube；The binder is water
Property binder or oiliness binder it is one or more；The conductive agent is in conductive black, conductive carbon fibre, electrically conductive graphite
It is one or more；The dispersant is one kind in TNWDIS, TNADIS, TNDDIS, TNEDIS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610410998.1A CN105932297B (en) | 2016-06-12 | 2016-06-12 | A kind of carbon nanotube conducting coating collector and its preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610410998.1A CN105932297B (en) | 2016-06-12 | 2016-06-12 | A kind of carbon nanotube conducting coating collector and its preparation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105932297A CN105932297A (en) | 2016-09-07 |
| CN105932297B true CN105932297B (en) | 2018-10-09 |
Family
ID=56833667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610410998.1A Active CN105932297B (en) | 2016-06-12 | 2016-06-12 | A kind of carbon nanotube conducting coating collector and its preparation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105932297B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826435B (en) * | 2016-04-28 | 2018-05-01 | 歌尔股份有限公司 | Forming method, manufacture method, backboard and the electronic equipment of the micro- light emitting diode of feux rouges |
| CN106328953A (en) * | 2016-10-12 | 2017-01-11 | 漳州万利达能源科技有限公司 | Current collector and preparation method thereof |
| KR102110800B1 (en) * | 2016-10-26 | 2020-05-14 | 주식회사 엘지화학 | Electrode for Secondary Battery Comprising Carbon Nano Tube Sheet |
| CN107317035A (en) * | 2017-06-23 | 2017-11-03 | 广东天劲新能源科技股份有限公司 | A kind of preparation method of novel microporous carbon-coated aluminum foils |
| CN107681160A (en) * | 2017-09-21 | 2018-02-09 | 合肥国轩高科动力能源有限公司 | A kind of preparation method of utter misery aluminium foil |
| CN108511756A (en) * | 2018-03-08 | 2018-09-07 | 四川西丹孚能源科技有限公司 | A kind of aqueous, environmental protective electrocondution slurry and preparation method thereof |
| CN110581279A (en) * | 2018-06-08 | 2019-12-17 | 成都市银隆新能源有限公司 | Preparation method of porous carbon-coated aluminum foil material for lithium ion battery |
| CN110310761A (en) * | 2018-08-22 | 2019-10-08 | 苏州怡拓生物传感技术有限公司 | Modified carbon nano-tube conductive carbon paste |
| CN109698077A (en) * | 2018-12-28 | 2019-04-30 | 上海奥威科技开发有限公司 | A kind of multilayer negative electrode tab and preparation method thereof and supercapacitor |
| CN110783572B (en) * | 2019-11-05 | 2020-07-24 | 广州纳诺新材料科技有限公司 | Secondary battery current collector, conductive paste and preparation method thereof |
| CN111029588B (en) * | 2019-12-11 | 2022-04-12 | 合肥国轩高科动力能源有限公司 | Be provided with mass flow body of little insurance and contain lithium ion battery pole piece of this mass flow body |
| CN113140706B (en) * | 2020-01-20 | 2022-09-23 | 浙江金非新能源科技有限公司 | Preparation method of lithium ion battery |
| CN111509231B (en) * | 2020-05-26 | 2021-08-10 | 苏州凌威新能源科技有限公司 | Negative electrode slurry, negative electrode sheet and preparation method thereof |
| CN111710832A (en) * | 2020-07-13 | 2020-09-25 | 江苏卓高新材料科技有限公司 | Silicon-containing negative plate, preparation method thereof and lithium ion secondary battery manufactured by silicon-containing negative plate |
| KR20240022548A (en) * | 2022-05-23 | 2024-02-20 | 컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드 | Positive plates and secondary batteries for secondary batteries |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090078656A (en) * | 2008-01-15 | 2009-07-20 | 삼성전자주식회사 | Electrode, lithium battery, method for preparing electrode and composition for electrode coating |
| CN102306800A (en) * | 2011-08-16 | 2012-01-04 | 清华大学 | Current collector and lithium ion battery |
| CN102593464A (en) * | 2012-02-29 | 2012-07-18 | 中国科学院宁波材料技术与工程研究所 | Current collector and preparation method thereof |
| CN102945945A (en) * | 2012-11-16 | 2013-02-27 | 双登集团股份有限公司 | Production method for pole piece of lithium ion battery |
| CN103131267A (en) * | 2011-11-24 | 2013-06-05 | 珠海银通新能源有限公司 | Lithium ion battery current collector precoating and preparation method thereof |
| CN205723768U (en) * | 2016-06-12 | 2016-11-23 | 华南理工大学 | A kind of carbon nanotube conducting coating collector |
-
2016
- 2016-06-12 CN CN201610410998.1A patent/CN105932297B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090078656A (en) * | 2008-01-15 | 2009-07-20 | 삼성전자주식회사 | Electrode, lithium battery, method for preparing electrode and composition for electrode coating |
| CN101488567A (en) * | 2008-01-15 | 2009-07-22 | 三星电子株式会社 | Electrode, lithium battery, method of manufacturing electrode, and composition for coating electrode |
| CN102306800A (en) * | 2011-08-16 | 2012-01-04 | 清华大学 | Current collector and lithium ion battery |
| CN103131267A (en) * | 2011-11-24 | 2013-06-05 | 珠海银通新能源有限公司 | Lithium ion battery current collector precoating and preparation method thereof |
| CN102593464A (en) * | 2012-02-29 | 2012-07-18 | 中国科学院宁波材料技术与工程研究所 | Current collector and preparation method thereof |
| CN102945945A (en) * | 2012-11-16 | 2013-02-27 | 双登集团股份有限公司 | Production method for pole piece of lithium ion battery |
| CN205723768U (en) * | 2016-06-12 | 2016-11-23 | 华南理工大学 | A kind of carbon nanotube conducting coating collector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105932297A (en) | 2016-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105932297B (en) | A kind of carbon nanotube conducting coating collector and its preparation process | |
| CN104810504B (en) | A kind of Flexible graphene collector and active material integrated electrode pole piece and preparation method thereof | |
| CN102569816B (en) | Positive electrode of lithium sulfur battery and preparation method thereof | |
| WO2017031885A1 (en) | Preparation method for lithium battery negative-electrode slurry | |
| CN106532045B (en) | Graphite negative material of lithium ion battery and preparation method thereof | |
| CN103199258A (en) | Cathode material of lithium ion battery, preparation method of cathode, and lithium ion battery | |
| CN105024044A (en) | Preparation method of high-capacity silica-powder-doped lithium battery anode slurry | |
| CN110993884B (en) | Lithium ion battery negative electrode slurry, preparation method, negative electrode plate and battery | |
| CN103268942A (en) | Modified current collector with nano graphite coating | |
| CN109273704A (en) | A kind of lithium anode and preparation method thereof with high-ratio surface protective layer | |
| CN106803593B (en) | A kind of complex function conductive coating and preparation method thereof | |
| CN105206790A (en) | Preparation method for lithium battery anode slurry doped with tin powder | |
| CN108039449A (en) | The preparation method and lithium ion battery of lithium ion battery | |
| CN102368543A (en) | Lithium ion battery cathode and lithium ion battery therewith | |
| CN106711497B (en) | A kind of lithium-sulphur cell positive electrode piece | |
| CN109638289A (en) | A kind of preparation method and application of new type lithium ion battery conductive additive carbonization silk | |
| CN205723768U (en) | A kind of carbon nanotube conducting coating collector | |
| CN103413917B (en) | The preparation method of the lithium manganate cathode pole piece containing Graphene | |
| CN102290566B (en) | Lithium battery anode preparing method and lithium battery | |
| CN105514396B (en) | A kind of lithium-sulfur cell negative material and preparation method thereof | |
| CN113285050A (en) | Li-M-X-based solid lithium battery anode and preparation method thereof | |
| CN105552307A (en) | Negative electrode material of lithium-sulfur battery and preparation method of negative electrode material | |
| CN114824164A (en) | Lithium ion battery cathode, preparation method thereof and lithium ion battery | |
| CN109786804B (en) | Nano battery | |
| CN103247788A (en) | Preparation method of electrode composite material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |