CN107240672A - A kind of method for adding graphene in the positive and negative pole plate of lithium battery - Google Patents
A kind of method for adding graphene in the positive and negative pole plate of lithium battery Download PDFInfo
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- CN107240672A CN107240672A CN201710318121.4A CN201710318121A CN107240672A CN 107240672 A CN107240672 A CN 107240672A CN 201710318121 A CN201710318121 A CN 201710318121A CN 107240672 A CN107240672 A CN 107240672A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a kind of method for adding graphene in the positive and negative pole plate of lithium battery, it is that first mixing adhesive and active solvent form transparency liquid, it is together stirred with positive pole mixing material, negative pole mixing material and grapheme material respectively, it is well mixed, obtain positive pole coating material, negative pole coating material and graphene coating material, graphene coating material and positive pole coating material are finally applied to cathode metal layer, obtain lithium battery anode plate, graphene coating material and negative pole coating material are applied to negative metal layer, cathode of lithium battery plate is obtained.The positive and negative pole plate of lithium battery made by the preparation method of the present invention can extend the cycle life of finished battery and improve charge and discharge multiplying power and security.
Description
Technical field
It is more particularly to a kind of using double-deck the present invention relates to a kind of method for adding graphene in the positive and negative pole plate of lithium battery
Graphene is added to the method in the positive and negative pole plate of lithium battery by rubbing method.
Background technology
Battery can be divided into one-shot battery or secondary cell (rechargeable battery), and wherein secondary cell can be divided into again according to its material
Lead-acid battery, nickel-cadmium cell, Ni-MH battery and lithium battery etc..Wherein, lithium battery because its lighter in weight and energy density it is higher,
It is widely used in recent years in running gear.In early days, the negative material of lithium battery is lithium metal, but because battery is in charging
Dispersion shape can be presented in lithium ion on negative pole face, and easily comes off, and cause the capacity of battery to reduce or short circuit, therefore occur in that not
The graphite cathode material of such a dispersion shape can be presented.
When making the positive and negative pole plate of lithium battery, binding material stirring and dissolving in a solvent is first typically added into conduction material
Material, if using graphene as conductive material, due to the Van der Waals force that graphene has in itself, when be put into stirred in solvent when, meeting
Occurs the situation that mixing is difficult and mixing is uneven.Cause final slurry be coated with the positive and negative pole plate to be formed application when it is easy because
Become big for internal resistance value, cause the impact of performance not good, it is impossible to play due efficiency.
In view of this, the present invention is in order to improve the hybrid technology of the positive and negative pole plate of lithium battery and grapheme material, it is proposed that one
The method for adding graphene in the positive and negative pole plate of lithium battery is planted, graphene uniform can be blended among positive and negative pole plate.
The content of the invention
It is to utilize it is a primary object of the present invention to provide a kind of method for adding graphene in the positive and negative pole plate of lithium battery
Double-coated mode is combined graphene with the material of positive and negative pole plate so that the material of graphene and positive and negative pole plate does not have
Mixing inequality or the phenomenon reunited, thus reach dispersed effect, to increase the stability of electrode sheet material.Meanwhile,
The introducing of graphene extends the secondary use cycle life of the lithium battery ultimately formed, and improves the charge and discharge of battery
Multiplying power and the upper security of use.
It is to utilize another object of the present invention is to provide a kind of method for adding graphene in the positive and negative pole plate of lithium battery
The mode of uniform stirring is separated, then the technological means that double-deck coating machine of arranging in pairs or groups is coated with, traditional electrode of lithium cell can be removed mixed
Mixing when closing graphene in preparation process is lacked.In addition, using computer program setting automation stirring facility, and distribute
Stirring, the mixing of different phase, can effectively reduce the time cost in human resources and preparation.
To achieve the above object, the present invention provides a kind of method for adding graphene in the positive and negative pole plate of lithium battery, bag
Containing the following steps：
1) mixing adhesive and active solvent, stirring form transparency liquid；
2) by step 1) gained transparency liquid be divided into three parts, respectively with positive pole mixing material, negative pole mixing material and
Grapheme material is together stirred；
3) the positive pole mixing material after together stirring further is well mixed with transparency liquid, obtains positive pole coating material
Material；Negative pole mixing material after together stirring further is well mixed with transparency liquid, negative pole coating material is obtained；Graphene
After material and transparency liquid are agitated, graphene coating material is obtained；
4) the graphene coating material and the positive pole coating material are together applied on cathode metal layer, obtain lithium
The graphene coating material and the negative pole coating material are together applied on negative metal layer by the positive plate of battery, are obtained
The negative plate of lithium battery.
It is preferred that, the positive pole mixing material is made up of cathode active material and graphene conductive agent, the negative pole
Mixing material is made up of negative electrode active material and graphene conductive agent.It is preferred that, the cathode active material is lithium cobalt oxide
Compound, lithium nickel oxide, lithium-cobalt-nickel oxide, lithium cobalt nickel manganese oxide or iron lithium phosphate oxide, the negative electrode active material
Material is Jie's phase carbosphere, native graphite, Delanium or Si-C composite material.
It is preferred that, percentage meter by weight, the graphene conductive agent in the positive pole mixing material accounts for positive electrode active material material
Graphene conductive agent in the 1%-6% of material, the negative pole mixing material accounts for the 1%-6% of negative electrode active material material；It is described
Cathode active material accounts for the 85%~95% of the positive pole coating material, and the negative electrode active material material accounts for the negative pole
The 87%~93% of coating material；The adhesive combined with the positive pole coating material account for the positive pole coating material 4%~
8%, the adhesive combined with the negative pole coating material accounts for the 4%~8% of the negative pole coating material；It is coated with the positive pole
Material with reference to active solvent account for the 45%-60% of the positive pole coating material, the activity combined with the negative pole coating material
Solvent accounts for the 45%-60% of the negative pole coating material；The graphene coating material being coated on the positive plate account for it is described just
The 1%~6% of coating material on pole plate, the graphene coating material being coated on the negative plate is accounted on the negative plate and is coated with
The 1%~6% of material.
It is preferred that, the active solvent is 1-METHYLPYRROLIDONE.
It is preferred that, step 1) described in transparency liquid be the adhesive to be mixed by mixer and the activity is molten
Dosage form into.
It is preferred that, step 2) in transparency liquid be divided into behind three parts, be to shake mixers by three cycles, respectively with
What the positive pole mixing material, the negative pole mixing material and the grapheme material were together stirred.
It is preferred that, step 3) described in positive pole coating material be by homogenizer, by the transparency liquid after together stirring
And positive pole mixing material is further well mixed what is formed；The negative pole coating material be by another homogenizer, will be through together
Transparency liquid and negative pole mixing material after stirring are further well mixed what is formed.
It is preferred that, step 4) in before painting work, the positive pole coating material, the negative pole coating material and the graphite
Alkene coating material is transferred to three turnover barrels to maintain lasting stirring respectively.
It is preferred that, step 4) described in the painting work of positive plate utilize the double-deck coating machine of positive pole to complete, institute
The painting work for stating negative plate is completed using the double-deck coating machine of negative pole.It is preferred that, the double-deck coating machine of the positive pole is
The graphene coating material and the positive pole coating material are exported simultaneously, and the graphene coating material is coated on institute
State on cathode metal layer, the positive pole coating material is coated on the graphene coating material；The negative pole bilayer coating
Machine is simultaneously to export the graphene coating material and the negative pole coating material, and is coated with the graphene coating material
On negative metal layer, the negative pole coating material is coated on the graphene coating material.
It is preferred that, the cathode metal layer is aluminium foil alloy, and the negative metal layer is copper foil alloy.
Diagram is coordinated to further describe the present invention with reference to specific embodiment, advantages of the present invention and feature will be with
Description and it is apparent.But these embodiments are only exemplary, do not constitute any limitation to the scope of the present invention.Ability
Field technique personnel should be understood that without departing from the spirit and scope of the invention can be to the details of technical solution of the present invention
Modify or replace with form, but these modifications and replacement are each fallen within protection scope of the present invention.
Brief description of the drawings
Fig. 1 is the block schematic diagram of process system used in the present invention；
Fig. 2 is step flow chart of the invention；
Fig. 3 a are the structural representation using the positive plate prepared by the present invention, and Fig. 3 b are prepared using the present invention
Negative plate structural representation.
[symbol description]
10 manufacture systems
12 cathode active material grooves
122 positive active materials are weighed dosage canister
14 negative electrode active material material grooves
142 negative electrode active materials are weighed dosage canister
16 adhesive grooves
162 adhesives are weighed dosage canister
18 active solvent grooves
182 active solvents are weighed dosage canister
The dilute material groove of 20 graphite
202 grapheme materials are weighed dosage canister
22 graphene conductive agent grooves
222 graphene conductive agent are weighed dosage canister
24 cycles shake mixer
26 graphene conductive agent grooves
262 graphene conductive agent are weighed dosage canister
28 cycles shake mixer
30 mixers
32 cycles shake mixer
34 homogenizers
36 homogenizers
38 turnover barrels
40 turnover barrels
42 turnover barrels
44 positive poles bilayer coating machine
46 negative poles bilayer coating machine
48 cathode metals layer
50 negative metals layer
52 first coating layers
54 second coating layers
56 positive plates
58 first coating layers
60 second coating layers
62 negative plates
Specific implementation method
In order to improve the use cycle life of lithium battery (secondary cell), and the charge and discharge multiplying power of battery is improved, simultaneously
Improve missing of the positive and negative pole plate of existing lithium battery in admixed graphite alkene in the presence of mixing inequality, exist the invention provides one kind
The method that the positive and negative pole plate of lithium battery adds graphene, is the mode being coated with using mix and match, effectively by grapheme material with
The positive and negative electrode of lithium battery is hardened to be closed, and improves the stability of these materials.
First, please also refer to shown in Fig. 1, Fig. 1 is the process system 10 of the invention provided, wherein including a positive-active
Material groove 12, negative electrode active material material groove 14, adhesive groove 16, active solvent groove 18, a stone
The dilute material groove 20 of ink, in these grooves, the storage of cathode active material groove 12 has cathode active material, negative electrode active material
The storage of material hopper 14 has negative electrode active material material, and the storage of adhesive groove 16 has adhesive, and the storage of active solvent groove 18 has work
Property solvent, grapheme material groove 20 storage have grapheme material.In the present embodiment, cathode active material is lithium cobalt oxidation
Thing, lithium nickel oxide, lithium-cobalt-nickel oxide, lithium cobalt nickel manganese oxide or iron lithium phosphate oxide；Negative electrode active material material is
Jie's phase carbosphere (mesophase carbon microbeads, MCMB), native graphite, Delanium or Si-C composite material；
Active solvent is 1-METHYLPYRROLIDONE (NMP).Cathode active material groove 12 first has graphene conductive agent with one
Graphene conductive agent groove 22 is respectively connecting to that a positive active material weighs dosage canister 122 and a graphene conductive agent is weighed
Dosage canister 222, positive active material weighs dosage canister 122 and graphene conductive agent weighs dosage canister 222 again while being connected to one
Individual cycle shakes mixer 24；The graphene conductive agent that negative electrode active material material groove 14 first has graphene conductive agent with one
Groove 26 is respectively connecting to that a negative electrode active material weighs dosage canister 142 and a graphene conductive agent is weighed dosage canister 262, bears
Pole active material weighs dosage canister 142 and graphene conductive agent is weighed dosage canister 262 again and stirred while being connected to a cycle concussion
Mix machine 28；Adhesive groove 16 and active solvent groove 18 are first respectively connecting to an adhesive and weighed dosage canister 162 and an activity
Solvent is weighed dosage canister 182, and adhesive weighs dosage canister 162 and active solvent weighs dosage canister 182 again while being connected to one
Mixer 30, mixer 30 shakes mixer 32 with cycle concussion mixer 24, cycle concussion mixer 28 and cycle respectively again
It is connected；Grapheme material groove 20 is first connected to a grapheme material and weighed dosage canister 202, then shakes mixer 32 with cycle
It is connected.
Accept epimere, cycle concussion mixer 24 and cycle concussion mixer 28 respectively with homogenizer 34 and the phase of homogenizer 36
Connection, homogenizer 34 and homogenizer 36 are respectively connecting to a turnover barrel 38 and turnover barrel 40 again；And cycle concussion mixer 32
Then it is connected directly to a turnover barrel 42.Turnover barrel 42 is connected to the double-deck coating machine 44 of a positive pole simultaneously with turnover barrel 38, this
Outside, turnover barrel 42 is also connected to the double-deck coating machine 46 of a negative pole simultaneously with turnover barrel 40.
In Fig. 1 and described above, symbol and connected mode for connection are pipeline connection, i.e., the present invention is to pass through
The above-mentioned material of Pipe transfer or liquid etc., in addition, the present invention can control the biography of above-mentioned each groove using computer program
Defeated time, transmission capacity or startup time etc., realize full-automatic.
After having illustrated the present invention using various cell bodies and the process system of conveying attachment structure, this is then further illustrated
The method and step of graphene is added in invention in the positive and negative pole plate of lithium battery, referring to shown in Fig. 1 and Fig. 2, following steps
Operation is using computer program control.
First, as shown in step S10, adhesive groove 16 and active solvent groove 18 are weighed dosage canister through adhesive respectively
162 and active solvent weighs the transmission adhesive of dosage canister 182 and active solvent is mixed into mixer 30, and utilize mixer
Mixed adhesive and active solvent are stirred to form transparency liquid by 30.
Then, as shown in step S12, the transparency liquid in mixer 30 may be calculated machine programme-control, be divided into
Three equal parts, are transmitted separately in cycle concussion mixer 24, cycle concussion mixer 28 and cycle concussion mixer 32, with respectively
The positive pole mixing material in mixer 24, the negative pole mixing material in cycle concussion mixer 28 and cycle is shaken with cycle to shake
Grapheme material in mixer 32 is together stirred.Wherein, the positive pole mixing material in cycle concussion mixer 24 is from positive pole
Active material groove 12 is weighed through positive active material and cathode active material is received in dosage canister 122, and from graphite
Alkene conductive agent groove 22 is weighed through graphene conductive agent and graphene conductive agent is received in dosage canister 222, and is mixed what is formed；Week
Negative pole mixing material in ripple concussion mixer 28 is weighed dosage through negative electrode active material from negative electrode active material material groove 14
Negative electrode active material material is received in tank 142, and is weighed dosage canister 262 through graphene conductive agent from graphene conductive agent groove 26
Middle reception graphene conductive agent, and it is mixed what is formed；Grapheme material in cycle concussion mixer 32 is from graphene
Material groove 20 weighs what is received in dosage canister 202 through grapheme material.
Epimere is accepted, after together stirring, as shown in step S14a, cycle is shaken to the positive pole together stirred in mixer 24
Mixing material and transparency liquid are transmitted into homogenizer 34, using the shearing force in homogenizer 34, collision and cavitation, enter one
Transparency liquid and positive pole mixing material are well mixed by step, obtain positive pole coating material；As shown in step S14b, cycle is shaken
The negative pole mixing material and transparency liquid together stirred in mixer 28 is transmitted into homogenizer 36, using the characteristic of homogenizer,
Further transparency liquid and negative pole mixing material are well mixed, negative pole coating material is obtained；As shown in step S14c, cycle shake
Swing transparency liquid and grapheme material in mixer 32 it is agitated after, obtain graphene coating material.Mixed by homogenizer
Positive pole mixing material and negative pole mixing material afterwards has more scattered effect.
Then, as shown in step S16a, and please again referring concurrently to shown in Fig. 3 a of the present invention, the positive pole in homogenizer 34 is coated with
Material can transmit the graphene coating material meeting in the action persistently stirred into turnover barrel 38, cycle concussion mixer 32
The action persistently stirred in turnover barrel 42 is transferred to, turnover barrel 42 can transmit graphene coating material therein to positive pole
In the double-deck coating machine 46 of double-deck coating machine 44 and negative pole, turnover barrel 38 can transmit positive pole coating material to the double-deck coating machine of positive pole
In 44 so that positive pole bilayer coating machine 44 is able to graphene coating material and positive pole coating material being together applied to cathode metal
On layer 48；As shown in step S16b, and please again referring concurrently to shown in Fig. 3 b of the present invention, the negative pole coating material meeting in homogenizer 36
The action persistently stirred into turnover barrel 40 is transmitted, negative pole coating material can be transmitted to negative pole bilayer and is coated with by turnover barrel 40
In machine 46 so that negative pole bilayer coating machine 46 is able to graphene coating material and negative pole coating material being together applied to negative pole gold
Belong on layer 50.In the present embodiment, cathode metal layer 48 is aluminium foil alloy, and negative metal layer 50 is copper foil alloy.In fig. 3 a,
Positive pole bilayer coating machine 44 can output graphene coating material and positive pole coating material, and graphene coating material is coated with simultaneously
The first coating layer 52 is formed on cathode metal layer 48, and is coated with positive pole coating material to form second on the first coating layer 52
Coating layer 54, finally gives the lithium battery anode plate 56 added with graphene of the present invention；In fig 3b, the double-deck coating machine of negative pole
46 can output graphene coating material and negative pole coating material, and graphene coating material is coated on into negative metal layer 50 simultaneously
The first coating layer 58 of upper formation, and negative pole coating material is coated with to form the second coating layer 60 on the first coating layer 58, finally
Obtain the cathode of lithium battery plate 62 added with graphene of the present invention.
The present invention has no specifically limited to the contents of various materials, and main purpose is how positive and negative in lithium battery to provide
The process of graphene is added in pole plate, but the present invention still gives the preferred proportion content of each material, for example：Percentage by weight
Graphene conductive agent in meter, the positive pole mixing material accounts for the 1%-6% of cathode active material, the negative pole mixing material
Graphene conductive agent in material accounts for the 1%-6% of negative electrode active material material；Cathode active material accounts for positive pole coating material
85%~95%, negative electrode active material material accounts for the 87%~93% of negative pole coating material；Combined with positive pole coating material
Adhesive accounts for the 4%~8% of positive pole coating material, and the adhesive combined with negative pole coating material accounts for the 4% of negative pole coating material
~8%；The active solvent combined with the positive pole coating material accounts for the 45%-60% of the positive pole coating material, is born with described
Pole coating material with reference to active solvent account for the 45%-60% of the negative pole coating material；It is coated on the graphene on positive plate
Coating material accounts for 1%~6% of coating material on positive plate, and the graphene coating material being coated on negative plate is accounted on negative plate
The 1%~6% of coating material.Positive active material in above-mentioned paragraph weigh dosage canister, graphene conductive agent weigh dosage canister,
Grapheme material weigh dosage canister, active solvent of dosage canister, adhesive of weighing weighs dosage canister and negative electrode active material is weighed agent
Measuring tank, is, by computer program control and above-mentioned material proportion of arranging in pairs or groups, to take out appropriate material from each groove respectively, with
It is transferred to what is handled in cycle concussion mixer or mixer.
The method that the present invention adds graphene in the positive and negative pole plate of lithium battery so that graphene and positive and negative pole plate are in mixing
During material, the phenomenon that mixing is uneven or reunites is not had, the coating material of grapheme material and positive and negative pole plate can be made uniform
It is dispersed on positive and negative electrode metal level, to improve the stability of various materials.Meanwhile, the introducing of graphene, which is extended, to be ultimately formed
Lithium battery positive and negative pole plate useful life, and then add cycle life of the battery in multiple charge and discharge, improve electricity
The multiplying power and security of pond charge and discharge.
Claims (12)
1. a kind of method for adding graphene in the positive and negative pole plate of lithium battery, it is characterised in that comprise the steps of：
1) mixing adhesive and active solvent, stirring form transparency liquid；
2) by step 1) gained transparency liquid be divided into three parts, respectively with positive pole mixing material, negative pole mixing material and graphite
Alkene material is together stirred；
3) the positive pole mixing material after together stirring further is well mixed with transparency liquid, obtains positive pole coating material；Will
Negative pole mixing material after together stirring further is well mixed with transparency liquid, obtains negative pole coating material；Grapheme material
With transparency liquid it is agitated after, obtain graphene coating material；
4) the graphene coating material and the positive pole coating material are together applied on cathode metal layer, obtain lithium battery
Positive plate；The graphene coating material and the negative pole coating material are together applied on negative metal layer, lithium is obtained
The negative plate of battery.
2. the method as described in claim 1, it is characterised in that the positive pole mixing material is by cathode active material and stone
Black alkene conductive agent composition, the negative pole mixing material is made up of negative electrode active material and graphene conductive agent.
3. method as claimed in claim 2, it is characterised in that the cathode active material is lithium and cobalt oxides, lithium nickel
Oxide, lithium-cobalt-nickel oxide, lithium cobalt nickel manganese oxide or iron lithium phosphate oxide, the negative electrode active material material are Jie's phase
Carbosphere, native graphite, Delanium or Si-C composite material.
4. method as claimed in claim 2, it is characterised in that percentage meter by weight, the graphite in the positive pole mixing material
The graphene conductive agent that alkene conductive agent is accounted in the 1%-6% of cathode active material, the negative pole mixing material accounts for negative pole work
The 1%-6% of property material；The cathode active material accounts for the 85%~95% of the positive pole coating material, described negative
Pole active material accounts for the 87%~93% of the negative pole coating material；The adhesive combined with the positive pole coating material is accounted for
The 4%~8% of the positive pole coating material, the adhesive combined with the negative pole coating material accounts for the negative pole coating material
4%~8%；The active solvent combined with the positive pole coating material accounts for the 45%-60% of the positive pole coating material, and described
Negative pole coating material with reference to active solvent account for the 45%-60% of the negative pole coating material；It is coated on the positive plate
Graphene coating material accounts for 1%~6% of coating material on the positive plate, is coated on the graphene coating on the negative plate
Material accounts for 1%~6% of coating material on the negative plate.
5. the method as described in claim 1, it is characterised in that the active solvent is 1-METHYLPYRROLIDONE.
6. the method as described in claim 1, it is characterised in that step 1) described in transparency liquid be to be stirred by mixer mixing
Mix the adhesive and the active solvent formation.
7. the method as described in claim 1, it is characterised in that step 2) in transparency liquid be divided into behind three parts, be to pass through
Three cycles shake mixer, respectively with the positive pole mixing material, the negative pole mixing material and the grapheme material one
With stirring.
8. method as claimed in claim 7, it is characterised in that step 3) described in positive pole coating material be by homogenizer,
Transparency liquid after together stirring and positive pole mixing material are further well mixed what is formed；The negative pole coating material is
By another homogenizer, the transparency liquid after together stirring and negative pole mixing material are further well mixed what is formed.
9. the method as described in claim 1, it is characterised in that step 4) in before painting work, the positive pole coating material, institute
State negative pole coating material and the graphene coating material is transferred to three turnover barrels to maintain lasting stirring respectively.
10. the method as described in claim 1, it is characterised in that step 4) described in the painting work of positive plate be logical
Cross what the double-deck coating machine of positive pole was completed, the painting work of the negative plate is completed by the double-deck coating machine of negative pole.
11. method as claimed in claim 10, it is characterised in that the double-deck coating machine of the positive pole is simultaneously by the graphene
Coating material and positive pole coating material output, and the graphene coating material is coated on the cathode metal layer,
The positive pole coating material is coated on the graphene coating material；The double-deck coating machine of the negative pole is simultaneously by the stone
Black alkene coating material and negative pole coating material output, and the graphene coating material is coated on the negative metal layer
On, the negative pole coating material is coated on the graphene coating material.
12. method as claimed in claim 11, it is characterised in that the cathode metal layer is aluminium foil alloy, the negative pole gold
Category layer is copper foil alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710318121.4A CN107240672A (en) | 2017-05-08 | 2017-05-08 | A kind of method for adding graphene in the positive and negative pole plate of lithium battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710318121.4A CN107240672A (en) | 2017-05-08 | 2017-05-08 | A kind of method for adding graphene in the positive and negative pole plate of lithium battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021017598A1 (en) * | 2019-07-26 | 2021-02-04 | 瑞新材料科技(香港)有限公司 | Method for manufacturing electrode having protective layer |
| WO2022126858A1 (en) * | 2020-12-14 | 2022-06-23 | 鹏盛国能(深圳)新能源集团有限公司 | Silicon-lithium battery and manufacturing method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928657A (en) * | 2014-04-30 | 2014-07-16 | 泉州劲鑫电子有限公司 | High-power lithium ion battery pole piece and preparation process thereof |
-
2017
- 2017-05-08 CN CN201710318121.4A patent/CN107240672A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928657A (en) * | 2014-04-30 | 2014-07-16 | 泉州劲鑫电子有限公司 | High-power lithium ion battery pole piece and preparation process thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021017598A1 (en) * | 2019-07-26 | 2021-02-04 | 瑞新材料科技(香港)有限公司 | Method for manufacturing electrode having protective layer |
| WO2022126858A1 (en) * | 2020-12-14 | 2022-06-23 | 鹏盛国能(深圳)新能源集团有限公司 | Silicon-lithium battery and manufacturing method thereof |
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Application publication date: 20171010 |