CN107768021A - A kind of preparation method of composite conducting slurry - Google Patents
A kind of preparation method of composite conducting slurry Download PDFInfo
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- CN107768021A CN107768021A CN201710874365.0A CN201710874365A CN107768021A CN 107768021 A CN107768021 A CN 107768021A CN 201710874365 A CN201710874365 A CN 201710874365A CN 107768021 A CN107768021 A CN 107768021A
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- H—ELECTRICITY
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- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/026—Alloys based on copper
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- H—ELECTRICITY
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
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Abstract
The invention belongs to electrode material field, and in particular to a kind of preparation method of composite conducting slurry；Preparation method comprises the following steps：CuSO is configured with distilled water4Saturated solution and Zn powder suspensions, to CuSO4Zn powder suspensions are added dropwise in saturated solution, regulation pH value is 35, is stirred at room temperature 40 50min, and the product A of acquisition is filtered, washing, obtains nanocrystalline copper powder after vacuum drying；Organic solvent is dissolved in by graphite is dilute, and regulation pH value is 89, is ultrasonically treated 12 hours, obtains graphene dispersing solution；Nanocrystalline copper powder and graphene dispersing solution are mixed, add binding agent and surfactant, 30 40min is stirred, obtains composite conducting slurry；The composite mortar that the present invention is prepared combines the advantages that nanocrystalline copper powder and graphene conductive performance is good, and stability is high, and technique is simple, cost is low, is easy to industrialized production.
Description
Technical field
The invention belongs to electrode material field, and in particular to a kind of preparation method of composite conducting slurry.
Background technology
Electrocondution slurry, it is widely used in cloth in microelectronics industry, encapsulation, connection etc., the miniaturization to microelectronic component
Play important use.The conductive phase of electric slurry is mostly based on the noble metal powders such as platinum, palladium, gold and silver, and silver-colored price is relatively
It is low, so the commercialized degree highest of silver paste.Silver-colored price more and more higher, the production cost of silver paste also increased therewith in recent years
Add, in addition silver paste existing silver ion migration problem in itself.
Graphene (Graphene) is the only one layer of atomic thickness for being stripped out from graphite material, being made up of carbon atom
Two dimensional crystal, the bidimensional cycle honeycomb lattice structure that it is made up of carbon hexatomic ring, the fullerene of zero dimension can be warped into
(fullerene), it is rolled into one-dimensional CNT (carbon nano-tube, CNT) or is stacked to the graphite of three-dimensional
(graphite), preferable graphene-structured is plane hexagonal lattice, can be regarded as one layer of graphitic molecules being stripped, often
Individual carbon atom is sp2 hydridization, and contributes and electronically form big pi bond on a remaining p track, and pi-electron can move freely, and assign
Give the electric conductivity that graphene is good.But graphene has hardly possible as slurry to be disperseed, the problem of easily unity.
Nano-particle refers to particle of the particle size between 1-100nm, have quantum size effect, small-size effect,
The distinctive property such as skin effect and macro quanta tunnel effect and function.Nano material has many specific performances, copper nanometer
Material is exactly a kind of particularly useful material, such as serves as catalyst, prepares " super modeling " steel, prepares gas sensor.Nanometer Copper
The preparation method of powder mainly has gas phase steam method, mechanochemical reaction and chemical reduction method etc..But common preparation method all compares
Complicated, cost height, it is difficult to carry out industrialized production.
Notification number is that 103500812B patent of invention discloses the preparation that a kind of doped graphene prepares high-conductivity slurry
Method, stirred by the way that the electrocondution slurry of different quality part, graphene, dispersant, deionized water are put into de-airing mixer in batches
Mix, finally obtain doped graphene and prepare high-conductivity slurry, this method technique is simple, but the graphene in the preparation method is deposited
In scattered and agglomeration traits, poor dispersion, graphene is caused to be reunited.
The content of the invention
The present invention is directed to deficiency of the prior art, and the present invention provides a kind of preparation method of composite conducting slurry, the party
The composite mortar that method is prepared combines the advantages that nanocrystalline copper powder and graphene conductive performance is good, and stability is high, and technique
Simply, cost is low, is easy to industrialized production.
In order to realize foregoing invention purpose, present invention employs following technical scheme：
A kind of preparation method of composite conducting slurry, comprises the following steps：
(1) preparation of nanocrystalline copper powder：Weigh CuSO4·5H2O and Zn powder, CuSO is configured with distilled water4Saturated solution and
Zn powder suspensions, to CuSO4Zn powder suspensions are added dropwise in saturated solution, regulation pH value is 3-5, and 40- is stirred at room temperature
50min, the product A of acquisition are filtered, washing, obtain nanocrystalline copper powder after vacuum drying；
(2) preparation of graphene dispersing solution：Graphite is prepared into reexpansion graphite, by reexpansion graphite and distilled water
Mixed liquor is mixed to get, graphene solution is obtained after mixed liquor mechanical shearing is peeled off, graphene solution centrifugal treating is obtained
Product B, product B is placed in Muffle furnace, high-temperature process 2-3 hours, obtain graphene under nitrogen reflux；Graphite is dilute
Organic solvent is dissolved in, regulation pH value is 8-9, is ultrasonically treated 1-2 hours, obtains graphene dispersing solution；
(3) preparation of composite conducting slurry：Nanocrystalline copper powder and graphene dispersing solution are mixed, are placed in de-airing mixer elder generation
With the 20-30r/min that revolves round the sun, rotation 700-800r/min speed stirring 50-60min, binding agent is added into de-airing mixer
And surfactant, with the 40-50r/min that revolves round the sun, rotation 700-800r/min speed stirring 30-40min, obtain composite conducting
Slurry.
Preferably, the detergent of the washing in the step (1) is deionized water.
Preferably, the vacuum drying time in the step (1) is 40-50min.
Preferably, the volume ratio of the graphene in the step (2) and organic solvent is 1-5:100.
Preferably, the body of the nanocrystalline copper powder in the step (3), graphene dispersing solution, binding agent and surfactant
Product ratio is 50-80:200:1-5:1-5.
Preferably, the surfactant in the step (3) is sodium n-alkylbenzenesulfonate, AEO sulphur
One or more in sour sodium, AESA or sldium lauryl sulfate.
Beneficial effect：1. preparing nanocrystalline copper powder by using displacement reaction, this method technique is simple, cost is low, and nanometer
The inoxidizability of brilliant copper powder, electric conductivity are better than Copper powder.
2. composite mortar is prepared in nanocrystalline copper powder and graphene by the present invention, the slurry conducts electricity very well, and makes
Pass through the control to pH value, the dispersiveness of strengthening slurry in standby composite conducting slurry.
Embodiment
The present invention is described in further detail below by embodiment.But those skilled in the art will manage
Solution, the following example is merely to illustrate the present invention, and should not be taken as limiting the scope of the invention.Unreceipted specific skill in embodiment
Art or condition person, carried out to specifications according to the technology described by document in the art or condition.Agents useful for same or instrument
Unreceipted production firm person, being can be by the conventional products of acquisition purchased in market.
Embodiment 1
A kind of preparation method of composite conducting slurry, comprises the following steps：
(1) preparation of nanocrystalline copper powder：CuSO is weighed respectively4·5H2O and Zn powder, CuSO is configured with distilled water4Saturation is molten
Liquid and Zn powder suspensions, to CuSO4Zn powder suspensions are added dropwise in saturated solution, regulation pH values are 3, are stirred at room temperature
40min, the product A of acquisition are filtered, washing, obtain nanocrystalline copper powder after vacuum drying；
(2) preparation of graphene dispersing solution：Graphite is prepared into reexpansion graphite, by reexpansion graphite and distilled water
Mixed liquor is mixed to get, graphene solution is obtained after mixed liquor mechanical shearing is peeled off, graphene solution centrifugal treating is obtained
Product B, product B is placed in Muffle furnace, high-temperature process 2 hours, obtain graphene under nitrogen reflux；Graphite is dilute molten
In organic solvent, regulation pH value is 8, is ultrasonically treated 1 hour, obtains graphene dispersing solution；
(3) preparation of composite conducting slurry：Nanocrystalline copper powder and graphene dispersing solution are mixed, are placed in de-airing mixer elder generation
With the 20r/min that revolves round the sun, rotation 700r/min speed stirring 50min, binding agent and surface-active are added into de-airing mixer
Agent, with the 40r/min that revolves round the sun, rotation 700r/min speed stirring 30min, obtain composite conducting slurry.
The detergent of washing in the step (1) is deionized water.
Vacuum drying time in the step (1) is 40min.
The volume ratio of graphene and organic solvent in the step (2) is 1:100.
The volume ratio of nanocrystalline copper powder, graphene dispersing solution, binding agent and surfactant in the step (3) is
50:200:1:1。
Surfactant in the step (3) is sodium n-alkylbenzenesulfonate.
Embodiment 2
A kind of preparation method of composite conducting slurry, comprises the following steps：
(1) preparation of nanocrystalline copper powder：Weigh CuSO4·5H2O and Zn powder, CuSO is configured with distilled water4Saturated solution and
Zn powder suspensions, to CuSO4Zn powder suspensions are added dropwise in saturated solution, regulation pH value is 5, and 50min is stirred at room temperature, obtains
Product A it is filtered, washing, vacuum drying after obtain nanocrystalline copper powder；
(2) preparation of graphene dispersing solution：Graphite is prepared into reexpansion graphite, by reexpansion graphite and distilled water
Mixed liquor is mixed to get, graphene solution is obtained after mixed liquor mechanical shearing is peeled off, graphene solution centrifugal treating is obtained
Product B, product B is placed in Muffle furnace, high-temperature process 3 hours, obtain graphene under nitrogen reflux；Graphite is dilute molten
In organic solvent, regulation pH value is 9, is ultrasonically treated 2 hours, obtains graphene dispersing solution；
(3) preparation of composite conducting slurry：Nanocrystalline copper powder and graphene dispersing solution are mixed, are placed in de-airing mixer elder generation
With the 30r/min that revolves round the sun, rotation 800r/min speed stirring 60min, binding agent and surface-active are added into de-airing mixer
Agent, with the 50r/min that revolves round the sun, rotation 800r/min speed stirring 40min, obtain composite conducting slurry.
The detergent of washing in the step (1) is deionized water.
Vacuum drying time in the step (1) is 50min.
The volume ratio of graphene and organic solvent in the step (2) is 5:100.
The volume ratio of nanocrystalline copper powder, graphene dispersing solution, binding agent and surfactant in the step (3) is
80:200:5:5。
Surfactant in the step (3) is that mass ratio is 1:1 sodium n-alkylbenzenesulfonate and fatty alcohol polyoxy
Ethene ether sodium sulfate.
Embodiment 3
A kind of preparation method of composite conducting slurry, comprises the following steps：
(1) preparation of nanocrystalline copper powder：Weigh CuSO4·5H2O and Zn powder, CuSO is configured with distilled water4Saturated solution and
Zn powder suspensions, to CuSO4Zn powder suspensions are added dropwise in saturated solution, regulation pH value is 4, and 45min is stirred at room temperature, obtains
Product A it is filtered, washing, vacuum drying after obtain nanocrystalline copper powder；
(2) preparation of graphene dispersing solution：Graphite is prepared into reexpansion graphite, by reexpansion graphite and distilled water
Mixed liquor is mixed to get, graphene solution is obtained after mixed liquor mechanical shearing is peeled off, graphene solution centrifugal treating is obtained
Product B, product B is placed in Muffle furnace, high-temperature process 2.5 hours, obtain graphene under nitrogen reflux；Graphite is dilute
Organic solvent is dissolved in, regulation pH value is 8, is ultrasonically treated 1.5 hours, obtains graphene dispersing solution；
(3) preparation of composite conducting slurry：Nanocrystalline copper powder and graphene dispersing solution are mixed, are placed in de-airing mixer elder generation
With the 25r/min that revolves round the sun, rotation 750r/min speed stirring 55min, binding agent and surface-active are added into de-airing mixer
Agent, with the 45r/min that revolves round the sun, rotation 750r/min speed stirring 35min, obtain composite conducting slurry.
The detergent of washing in the step (1) is deionized water.
Vacuum drying time in the step (1) is 45min.
The volume ratio of graphene and organic solvent in the step (2) is 3:100.
The volume ratio of nanocrystalline copper powder, graphene dispersing solution, binding agent and surfactant in the step (3) is
70:200:3:3。
Surfactant in the step (3) is sldium lauryl sulfate.
Embodiment 4
A kind of preparation method of composite conducting slurry, comprises the following steps：
(1) preparation of nanocrystalline copper powder：Weigh CuSO4·5H2O and Zn powder, CuSO is configured with distilled water4Saturated solution and
Zn powder suspensions, to CuSO4Zn powder suspensions are added dropwise in saturated solution, regulation pH value is 4, and 46min is stirred at room temperature, obtains
Product A it is filtered, washing, vacuum drying after obtain nanocrystalline copper powder；
(2) preparation of graphene dispersing solution：Graphite is prepared into reexpansion graphite, by reexpansion graphite and distilled water
Mixed liquor is mixed to get, graphene solution is obtained after mixed liquor mechanical shearing is peeled off, graphene solution centrifugal treating is obtained
Product B, product B is placed in Muffle furnace, high-temperature process 2 hours, obtain graphene under nitrogen reflux；Graphite is dilute molten
In organic solvent, regulation pH value is 8, is ultrasonically treated 1.5 hours, obtains graphene dispersing solution；
(3) preparation of composite conducting slurry：Nanocrystalline copper powder and graphene dispersing solution are mixed, are placed in de-airing mixer elder generation
With the 26r/min that revolves round the sun, rotation 780r/min speed stirring 50min, binding agent and surface-active are added into de-airing mixer
Agent, with the 46r/min that revolves round the sun, rotation 770r/min speed stirring 38min, obtain composite conducting slurry.
The detergent of washing in the step (1) is deionized water.
Vacuum drying time in the step (1) is 45min.
The volume ratio of graphene and organic solvent in the step (2) is 4:100.
The volume ratio of nanocrystalline copper powder, graphene dispersing solution, binding agent and surfactant in the step (3) is
70:200:4:3。
Surfactant in the step (3) is sodium n-alkylbenzenesulfonate.
Embodiment 5
A kind of preparation method of composite conducting slurry, comprises the following steps：
(1) preparation of nanocrystalline copper powder：Weigh CuSO4·5H2O and Zn powder, CuSO is configured with distilled water4Saturated solution and
Zn powder suspensions, to CuSO4Zn powder suspensions are added dropwise in saturated solution, regulation pH value is 5, and 50min is stirred at room temperature, obtains
Product A it is filtered, washing, vacuum drying after obtain nanocrystalline copper powder；
(2) preparation of graphene dispersing solution：Graphite is prepared into reexpansion graphite, by reexpansion graphite and distilled water
Mixed liquor is mixed to get, graphene solution is obtained after mixed liquor mechanical shearing is peeled off, graphene solution centrifugal treating is obtained
Product B, product B is placed in Muffle furnace, high-temperature process 3 hours, obtain graphene under nitrogen reflux；Graphite is dilute molten
In organic solvent, regulation pH value is 8, is ultrasonically treated 2 hours, obtains graphene dispersing solution；
(3) preparation of composite conducting slurry：Nanocrystalline copper powder and graphene dispersing solution are mixed, are placed in de-airing mixer elder generation
With the 30r/min that revolves round the sun, rotation 700r/min speed stirring 50min, binding agent and surface-active are added into de-airing mixer
Agent, with the 40r/min that revolves round the sun, rotation 800r/min speed stirring 40min, obtain composite conducting slurry.
The detergent of washing in the step (1) is deionized water.
Vacuum drying time in the step (1) is 45min.
The volume ratio of graphene and organic solvent in the step (2) is 2:100.
The volume ratio of nanocrystalline copper powder, graphene dispersing solution, binding agent and surfactant in the step (3) is
60:200:2:3。
The volume ratio of nanocrystalline copper powder, graphene dispersing solution, binding agent and surfactant in the step (3) is
70:200:3:3。
Surfactant in the step (3) is sldium lauryl sulfate.
Comparative example 1
A kind of preparation method of nanocrystalline copper slurry material, comprises the following steps：
(1) preparation of nanocrystalline copper powder：CuSO is weighed respectively4·5H2O and Zn powder, CuSO is configured with distilled water4Saturation is molten
Liquid and Zn powder suspensions, to CuSO4Zn powder suspensions are added dropwise in saturated solution, regulation pH values are 3, are stirred at room temperature
40min, the product A of acquisition are filtered, washing, obtain nanocrystalline copper powder after vacuum drying；
(3) preparation method of nanocrystalline copper slurry material：Nanocrystalline copper powder and graphene dispersing solution are mixed, vacuum is placed in and stirs
Machine is mixed first with the 20r/min that revolves round the sun, and rotation 700r/min speed stirring 50min, binding agent and table is added into de-airing mixer
Face activating agent, with the 40r/min that revolves round the sun, rotation 700r/min speed stirring 30min, obtain composite conducting slurry.
The detergent of washing in the step (1) is deionized water.
Vacuum drying time in the step (1) is 40min.
The volume ratio of graphene and organic solvent in the step (2) is 1:100.
The volume ratio of nanocrystalline copper powder, graphene dispersing solution, binding agent and surfactant in the step (3) is
50:200:1:1。
Surfactant in the step (3) is that mass ratio is 1：1：1 sodium n-alkylbenzenesulfonate, fatty alcohol polyoxy
Ethene ether sodium sulfate and AESA.
Comparative example 1
A kind of preparation method of nanocrystalline copper powder electrocondution slurry, comprises the following steps：
(1) preparation of nanocrystalline copper powder：Weigh CuSO4·5H2O and Zn powder, CuSO is configured with distilled water4Saturated solution and
Zn powder suspensions, to CuSO4Zn powder suspensions are added dropwise in saturated solution, regulation pH value is 5, and 50min is stirred at room temperature, obtains
Product A it is filtered, washing, vacuum drying after obtain nanocrystalline copper powder；
(2) preparation of nanocrystalline copper powder electrocondution slurry：Nanocrystalline copper powder and organic solvent are mixed, are placed in de-airing mixer
First with the 30r/min that revolves round the sun, rotation 800r/min speed stirring 60min, binding agent is added into de-airing mixer and surface is lived
Property agent, with the 50r/min that revolves round the sun, rotation 800r/min speed stirring 40min obtains nanocrystalline copper powder electrocondution slurry.
The detergent of washing in the step (1) is deionized water.
Vacuum drying time in the step (1) is 50min.
The volume ratio of nanocrystalline copper powder, organic solvent, binding agent and surfactant in the step (2) is 80:
200:5:5。
Surfactant in the step (3) is that mass ratio is 1:1 sodium n-alkylbenzenesulfonate and fatty alcohol polyoxy
Ethene ether sodium sulfate.
Comparative example 2
A kind of preparation method of nanocrystalline copper powder electrocondution slurry, comprises the following steps：
(1) preparation of nanocrystalline copper powder：Weigh CuSO4·5H2O and Zn powder, CuSO is configured with distilled water4Saturated solution and
Zn powder suspensions, to CuSO4Zn powder suspensions are added dropwise in saturated solution, regulation pH value is 4, and 45min is stirred at room temperature, and is obtained
Product A it is filtered, washing, vacuum drying after obtain nanocrystalline copper powder；
(2) preparation of nanocrystalline copper powder electrocondution slurry：Nanocrystalline copper powder and organic solvent are mixed, are placed in de-airing mixer
First with the 25r/min that revolves round the sun, rotation 750r/min speed stirring 55min, binding agent is added into de-airing mixer and surface is lived
Property agent, with the 45r/min that revolves round the sun, rotation 750r/min speed stirring 35min obtains composite conducting slurry.
The detergent of washing in the step (1) is deionized water.
Vacuum drying time in the step (1) is 45min.
The volume ratio of nanocrystalline copper powder, organic solvent, binding agent and surfactant in the step (2) is 70:
200:3:3。
Surfactant in the step (2) is sldium lauryl sulfate.
Composite conducting slurry obtained by 1-5 of the embodiment of the present invention and comparative example 1-2 and nanocrystalline copper powder electrocondution slurry are used
Spraying technology is applied to 16u lithium battery routine aluminium foils two sides, and drying measurement causes one side coating layer thickness in 1u-1.5u, coated on both sides
Material thickness is in 2u-3u, and performance test, acquired results are as shown in the table：
As table is visible：Composite conducting slurry obtained by preparation method of the present invention has excellent performance.
Embodiment described above is only the preferred embodiment of this patent, and this patent is not limited to above-described embodiment, for this
The those skilled in the art in field, on the premise of without departing substantially from this patent design principle, any obviously change to what it was done
It is dynamic, belong to the design of this patent and the protection domain of appended claims.
Claims (6)
1. a kind of preparation method of composite conducting slurry, it is characterised in that comprise the following steps：
(1) preparation of nanocrystalline copper powder：Weigh CuSO4·5H2O and Zn powder, CuSO is configured with distilled water4Saturated solution and Zn powder
Suspension, to CuSO4Zn powder suspensions are added dropwise in saturated solution, regulation pH value is 3-5, and 40-50min is stirred at room temperature, obtains
Product A it is filtered, washing, vacuum drying after obtain nanocrystalline copper powder；
(2) preparation of graphene dispersing solution：Graphite is prepared into reexpansion graphite, reexpansion graphite is mixed with distilled water
Mixed liquor is obtained, graphene solution is obtained after mixed liquor mechanical shearing is peeled off, graphene solution centrifugal treating is obtained into product
B, product B is placed in Muffle furnace, high-temperature process 2-3 hours, obtain graphene under nitrogen reflux；Dilute be dissolved in of graphite is had
Solvent, regulation pH value are 8-9, are ultrasonically treated 1-2 hours, obtain graphene dispersing solution；
(3) preparation of composite conducting slurry：Nanocrystalline copper powder and graphene dispersing solution are mixed, are placed in de-airing mixer first with public affairs
Turn 20-30r/min, rotation 700-800r/min speed stirring 50-60min, binding agent and table are added into de-airing mixer
Face activating agent, with the 40-50r/min that revolves round the sun, rotation 700-800r/min speed stirring 30-40min, obtain composite guide plasma-based
Material.
2. the preparation method of a kind of composite conducting slurry according to claim 1, it is characterised in that in the step (1)
The detergent of washing be deionized water.
3. the preparation method of a kind of composite conducting slurry according to claim 1, it is characterised in that in the step (1)
Vacuum drying time be 40-50min.
4. the preparation method of a kind of composite conducting slurry according to claim 1, it is characterised in that in the step (2)
Graphene and the volume ratio of organic solvent be 1-5:100.
5. the preparation method of a kind of composite conducting slurry according to claim 1, it is characterised in that in the step (3)
Nanocrystalline copper powder, graphene dispersing solution, the volume ratio of binding agent and surfactant be 50-80:200:1-5:1-5.
6. the preparation method of a kind of composite conducting slurry according to claim 1, it is characterised in that in the step (3)
Surfactant for sodium n-alkylbenzenesulfonate, sodium sulfate of polyethenoxy ether of fatty alcohol, AESA
Or the one or more in sldium lauryl sulfate.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113675532A (en) * | 2021-08-13 | 2021-11-19 | 东莞维科电池有限公司 | Diaphragm and preparation method and application thereof |
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|---|---|---|---|---|
| CN104021842A (en) * | 2014-06-25 | 2014-09-03 | 西安工程大学 | Graphene composite copper thick film conductive slurry and preparation method thereof |
| CN104495826A (en) * | 2014-12-25 | 2015-04-08 | 北京航空航天大学 | Single-layer graphene dispersion liquid and preparation method thereof |
| CN105253878A (en) * | 2015-11-18 | 2016-01-20 | 复旦大学 | Method for directly preparing expanded graphite or graphene under normal temperature and normal pressure |
| CN107032342A (en) * | 2017-04-28 | 2017-08-11 | 青岛德通纳米技术有限公司 | A kind of preparation method of the stable aqueous dispersion of graphene |
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2017
- 2017-09-25 CN CN201710874365.0A patent/CN107768021A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104021842A (en) * | 2014-06-25 | 2014-09-03 | 西安工程大学 | Graphene composite copper thick film conductive slurry and preparation method thereof |
| CN104495826A (en) * | 2014-12-25 | 2015-04-08 | 北京航空航天大学 | Single-layer graphene dispersion liquid and preparation method thereof |
| CN105253878A (en) * | 2015-11-18 | 2016-01-20 | 复旦大学 | Method for directly preparing expanded graphite or graphene under normal temperature and normal pressure |
| CN107032342A (en) * | 2017-04-28 | 2017-08-11 | 青岛德通纳米技术有限公司 | A kind of preparation method of the stable aqueous dispersion of graphene |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113675532A (en) * | 2021-08-13 | 2021-11-19 | 东莞维科电池有限公司 | Diaphragm and preparation method and application thereof |
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