CN103839605B - A kind of electrocondution slurry and its preparation method and application - Google Patents
A kind of electrocondution slurry and its preparation method and application Download PDFInfo
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Abstract
The invention discloses a kind of electrocondution slurry and its preparation method and application.This slurry is made up of each raw material that mass percentage is following: the silver-graphene composite material of 30 ~ 40%, the organic resin of 30 ~ 48%, the crosslinking agent of 5 ~ 10% and the diluent of 12 ~ 26%.Wherein, silver-graphene composite material obtains as follows: graphite oxide and organic silver are added ultrasonic disperse in the mixed system of organic solvent and deionized water composition; While being uniformly mixed system, in mixed system, drip hydrazine hydrate; After at room temperature stirring 20 ~ 30min, be warming up to 60 ~ 70 DEG C, reaction 2 ~ 3h, is cooled to room temperature, filters, with washed with de-ionized water, vacuumize, obtains silver-graphene composite material.The present invention can meet the demand of photovoltaic device to electrical property under compared with low silver content condition, is applicable to flexible substrate, and with the strong adhesion of substrate ITO material, temperature-resistant wet performance is good, and fine rule printing performance is excellent, significantly reduces the production cost of slurry.
Description
Technical field
The invention belongs to photoelectricity information material preparing technical field, more specifically, relate to a kind of electrocondution slurry and its preparation method and application.
Background technology
Along with riseing fast of fossil fuels energy prices, solar energy is as a kind of abundant, clean regenerative resource, and it develops alleviating energy crisis, preserves the ecological environment and ensure that sustainable economic development are significant.Although crystal silicon solar batteries occupies the dominant contribution in solar cell market, but thin-film solar cells because it is with low cost, flexible, manufacture craft are simple and carbon discharge capacity is few, there is wide market prospects and huge development potentiality, become the development trend of current solar cell.
For ensureing optical transmittance and the charge collection efficiency of device, thin-film solar cells extensively adopts transparent conductive oxide (TransparentConductiveOxide, TCO) thin-film material, as indium tin oxide (ITO), aluminium zinc oxide (AZO) etc.Therefore, when junior unit battery pack dresses up battery module, thin-film solar cells device all faces a similar difficult problem: namely how effectively to solve charge-trapping, ensures optical transmittance.Although the conductivity of TCO material improves a lot at present, but because TCO own electronic current capacity is not enough, large area film solar cell still needs to cover conductive grid on TCO, to reduce the requirement of battery to surface resistance, meets the needs that charge carrier effectively collected by device.
Prepare different from the silver-colored gate electrode of conventional crystalline silicon solar cell, thin-film solar cells limits by material temperature tolerance, is not suitable for adopting high temperature sintering processing technology, and especially have the flexible solar battery of very big market prospects, technological temperature is all within 200 DEG C.Therefore, the following condition of electrocondution slurry demand fulfillment of film photovoltaic use: 1) by low-temperature setting mode, realize adhering to the brute force of TCO; 2) electrode material after solidification has alap volume resistance and contact resistance, ensures effective transmission of electric charge, has good stability simultaneously; 3) possess excellent fine rule printing performance, while meeting current-carrying requirement, make masked area minimum.
At present, the metal money base electrocondution slurry that thin-film solar cells uses forms primarily of argent particulate, organic carrier and auxiliary agent.In conventional silver slurry preparation process, for effectively disperseing and stable silver powder, need to use surfactant and dispersant, although surfactant and dispersant is of a great variety, but for electric slurry, due to itself do not participate in conduction, to electrode device use in electric property and stability all have destruction.For obtaining stable electricity conduction property, the argent slurry solid content that thin-film solar cells uses at present is higher, after the solidification of silver slurry, silver-colored gate electrode pliability is poor, in actual production, usually adopt screen printing mode to print silver-colored gate electrode, after silver slurry high speed printing, figure easily subsides, greatly reduce the effective light transmission area of thin-film solar cells, have a strong impact on the actual electricity conversion of battery device.
Summary of the invention
For above defect or the Improvement requirement of prior art, the invention provides a kind of electrocondution slurry and its preparation method and application, the demand of photovoltaic device to electrical property can be met under compared with low silver content condition, be applicable to flexible substrate, with the strong adhesion of substrate ITO material, temperature-resistant wet performance is good, and fine rule printing performance is excellent, significantly reduces the production cost of slurry.This type of electrocondution slurry is not only suitable for thin-film solar cells, and can be widely used in the transparent photoelectric devices such as organic luminescent device, flat-panel monitor, intelligent window, touch-screen.
For achieving the above object, according to one aspect of the present invention, provide a kind of electrocondution slurry, it is characterized in that, the each raw material following by mass percentage forms: the silver-graphene composite material of 30 ~ 40%, the organic resin of 30 ~ 48%, the crosslinking agent of 5 ~ 10% and the diluent of 12 ~ 26%.
Preferably, described silver-graphene composite material obtains as follows: graphite oxide and organic silver are added ultrasonic disperse 20 ~ 40min in the mixed system of organic solvent and deionized water composition in 1:20 ~ 50 by (1) in mass ratio, wherein, the volume ratio of organic solvent and deionized water is 1:1 ~ 3; (2) make the temperature of mixed system remain on 0 ~ 10 DEG C, while being uniformly mixed system, drip hydrazine hydrate by the mass volume ratio 1:100 ~ 200g/mL of graphite oxide and hydrazine hydrate in mixed system, rate of addition is 0.8 ~ 1.5mL/min; (3) after at room temperature stirring 20 ~ 30min, be warming up to 60 ~ 70 DEG C, reaction 2 ~ 3h, is cooled to room temperature, filters, with washed with de-ionized water, vacuumize, obtains silver-graphene composite material.
Preferably, the described organic silver at least one that to be carbon atom quantity be in the straight or branched representative examples of saturated aliphatic monocarboxylic acid silver compound of 5 ~ 22.
Preferably, described organic solvent is at least one in methyl alcohol, ethanol, ethylene glycol, isopropyl alcohol, the tert-butyl alcohol, acetone, methylethylketone, DMF, dimethyl sulfoxide (DMSO), oxolane, glacial acetic acid, acetonitrile and dioxane.
Preferably, described organic resin is at least one in saturated polyester, EU and PAUR, described crosslinking agent is aromatic series or aliphat enclosed type PIC, deblocking temperature is 130 ~ 150 DEG C, and described diluent is at least one in diethylene glycol ether acetate, diethylene glycol pentyl ester, diethylene glycol, diethylene glycol monobutyl ether acetate, high boiling solvent mixed dibasic acid fat, butyl carbitol acetate and butyl carbitol.
According to another aspect of the present invention, provide a kind of preparation method of electrocondution slurry, it is characterized in that, comprise the steps:
(1) prepare silver-graphene composite material, comprise the steps: further
(1-1) graphite oxide and organic silver are added ultrasonic disperse 20 ~ 40min in the mixed system of organic solvent and deionized water composition in 1:20 ~ 50 in mass ratio, wherein, the volume ratio of organic solvent and deionized water is 1:1 ~ 3;
(1-2) make the temperature of mixed system remain on 0 ~ 10 DEG C, while being uniformly mixed system, drip hydrazine hydrate by the mass volume ratio 1:100 ~ 200g/mL of graphite oxide and hydrazine hydrate in mixed system, rate of addition is 0.8 ~ 1.5mL/min;
(1-3) after at room temperature stirring 20 ~ 30min, be warming up to 60 ~ 70 DEG C, reaction 2 ~ 3h, is cooled to room temperature, filters, with washed with de-ionized water, vacuumize, obtains silver-graphene composite material;
(2) by mass percentage be 30 ~ 40% silver-graphene composite material mix obtained electrocondution slurry with organic carrier.
Preferably, described organic carrier is prepared as follows: take raw material by following mass percent: the silver-graphene composite material of 30 ~ 40%, the organic resin of 30 ~ 48%, the crosslinking agent of 5 ~ 10% and the diluent of 12 ~ 26%, by organic resin, crosslinking agent and diluent dispersion 4 ~ 6min, obtained organic carrier.
Preferably, described organic resin is at least one in saturated polyester, EU and PAUR, described crosslinking agent is aromatic series or aliphat enclosed type PIC, deblocking temperature is 130 ~ 150 DEG C, and described diluent is at least one in diethylene glycol ether acetate, diethylene glycol pentyl ester, diethylene glycol, diethylene glycol monobutyl ether acetate, high boiling solvent mixed dibasic acid fat, butyl carbitol acetate and butyl carbitol.
Preferably, in described step (2), after silver-graphene composite material being mixed with organic carrier on planet centrifugal blender after deaeration 8 ~ 10min, on three-roll grinder, rolling 3 ~ 5 times, obtains electrocondution slurry.
According to another aspect of the present invention, provide a kind of thin-film solar cells, use above-mentioned electrocondution slurry.
In general, the above technical scheme conceived by the present invention compared with prior art, has following beneficial effect:
1, flexible substrate is applicable to.Graphene is utilized to replace traditional flake silver powder, faying surface sum after " location " lap of splice is provided, avoiding the interlayer " displacement " compared with causing under large deformation and warm change condition to affect transferring charge, meeting the requirement of flexible device to printed electrode pliability and extension strength.
2, series resistance is little, and ensure effective transmission of electric charge, cost is low.On the one hand, fine and close effective silver/graphite alkene conductive network, drastically increases the electrical efficiency of slurry, under 30 ~ 40wt% solid content, can obtain good electricity conducting; On the other hand, the Nano Silver of Graphene compound provides an overlap joint, effectively reduces the interface contact resistance of electrocondution slurry and transparent conductive oxide, forms the interface of charge carrier height conducting.
3, the introducing of grapheme material substantially increases the printed resolution of electric slurry, prints live width and while meeting current-carrying requirement, realizes shade cover and minimize, be conducive to the photoelectric conversion efficiency improving solar cell.
4, slurry curing temperature is low, curing time is short, all has good caking property to the high energy surface of metal, conductive oxide, pottery, glass and polymer, the electrode material temperature-resistant wet after solidification, anti-scratch, has good caking property to ITO material.
5, by " one kettle way " electronation synthesized high-performance silver/graphite alkene conducing composite material, utilize the flexible alkane chain of organic silver compound to be formed sterically hindered, stop the accumulation between graphene oxide carbon-coating, effective stripping of accelerating oxidation Graphene; Graphene oxide serves as surfactant, control the size of electronation synthesis of nano silver powder, reduced graphene, to nano-silver powder functionalizing material surface, makes nanoparticulate dispersed all even stable, avoid introducing non-conductive function additive, be conducive to the comprehensive electrical performance improving electrode slurry.
6, preparation method is simple, cost is low, without lead contamination, require not harsh to production equipment, obtained size performance is good, have broad application prospects, not only can be used for thin-film solar cells, and the optoelectronic information fields such as touch-screen, thin film switch, capacitance electrode, radio frequency label, printed substrate can be widely used in.
Accompanying drawing explanation
Fig. 1 is the SEM figure of the silver-graphene composite material that the embodiment of the present invention 1 obtains;
Fig. 2 is the SEM figure of the silver-graphene composite material that the embodiment of the present invention 2 obtains;
Fig. 3 is the SEM figure of the silver-graphene composite material that the embodiment of the present invention 3 obtains.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.In addition, if below in described each execution mode of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
Graphene is another Novel Carbon Nanomaterials after carbon nano-tube is found.Graphene has bi-dimensional cellular shape lattice monolayer carbon atomic structure closely, and its design feature determines the performance of this material excellence.On two dimensional surface, Graphene is with SP2 orbital hybridization, under flexible curved state, even if around carbon atom telescopes, the interference that in Graphene, electric transmission is subject to is also very little, electronics in vertical graphenic surface π bond orbital can free high-speed mobile, makes Graphene have good electric conductivity.Utilize structure and the permeability properties of Graphene uniqueness, can disperse and stable nanoparticles, provide flexible support simultaneously.
Based on the above-mentioned characteristic of Graphene, for reducing costs, improve the combination property of electrocondution slurry, the present invention is by " one kettle way " electronation synthesized high-performance silver/graphite alkene conducing composite material, the flexible alkane chain of organic silver compound is utilized to be formed sterically hindered, stop the accumulation between graphene oxide carbon-coating, effective stripping of accelerating oxidation Graphene; Graphene oxide serves as surfactant, control the size of electronation synthesis of nano silver powder, reduced graphene, to nano-silver powder functionalizing material surface, makes nanoparticulate dispersed all even stable, avoid introducing non-conductive function additive, be conducive to the comprehensive electrical performance improving electrode slurry.In addition, the Nano Silver of Graphene compound provides an overlap joint, effectively reduces the interface contact resistance of electrocondution slurry and transparent conductive oxide, forms the interface of charge carrier height conducting, and fine and close effective silver/graphite alkene conductive network ensure that effective transmission of electric charge.
The electrocondution slurry of the embodiment of the present invention is made up of each raw material that mass percentage is following: the silver-graphene composite material of 30 ~ 40%, the organic resin of 30 ~ 48%, the crosslinking agent of 5 ~ 10%, the diluent of 12 ~ 26%.
Wherein, organic resin is at least one in saturated polyester, EU and PAUR, and particularly, organic resin is PAUR, and synthesized by tetramethylene adipate and toluene di-isocyanate(TDI), molecular weight is 2800 ~ 4000.Crosslinking agent is aromatic series or aliphat enclosed type PIC, and deblocking temperature is 130 ~ 150 DEG C.Diluent is at least one in diethylene glycol ether acetate, diethylene glycol pentyl ester, diethylene glycol, diethylene glycol monobutyl ether acetate, high boiling solvent mixed dibasic acid fat (DBE), butyl carbitol acetate and butyl carbitol.
The preparation method of the electrocondution slurry of the embodiment of the present invention comprises the steps:
(1) prepare silver-graphene composite material, comprise the steps: further
(1-1) graphite oxide and organic silver are added ultrasonic disperse 20 ~ 40min in the mixed system of organic solvent and deionized water composition in 1:20 ~ 50 in mass ratio.Wherein, the organic silver at least one that to be carbon atom quantity be in the straight or branched representative examples of saturated aliphatic monocarboxylic acid silver compound of 5 ~ 22.Organic solvent is at least one in methyl alcohol, ethanol, ethylene glycol, isopropyl alcohol, the tert-butyl alcohol, acetone, methylethylketone, DMF, dimethyl sulfoxide (DMSO), oxolane, glacial acetic acid, acetonitrile and dioxane.The volume ratio of organic solvent and deionized water is 1:1 ~ 3.
(1-2) make the temperature of mixed system remain on 0 ~ 10 DEG C, while being uniformly mixed system, drip hydrazine hydrate by the mass volume ratio 1:100 ~ 200g/mL of graphite oxide and hydrazine hydrate in mixed system, rate of addition is 0.8 ~ 1.5mL/min.
(1-3) after at room temperature stirring 20 ~ 30min, be warming up to 60 ~ 70 DEG C, reaction 2 ~ 3h, is cooled to room temperature, filters, with washed with de-ionized water, vacuumize, obtains silver-graphene composite material.
(2) by mass percentage be 30 ~ 40% silver-graphene composite material mix obtained electrocondution slurry with organic carrier.Particularly, take raw material by following mass percent: the silver-graphene composite material of 30 ~ 40%, the organic resin of 30 ~ 48%, the crosslinking agent of 5 ~ 10%, the diluent of 12 ~ 26%, by organic resin, crosslinking agent and diluent dispersion 4 ~ 6min, obtained organic carrier.After silver-graphene composite material being mixed with organic carrier on planet centrifugal blender after deaeration 8 ~ 10min, on three-roll grinder, rolling 3 ~ 5 times, obtains electrocondution slurry.
For making those skilled in the art understand the present invention better, below in conjunction with specific embodiment, the preparation method of electrocondution slurry of the present invention is described in detail.
Embodiment 1
200mg graphite oxide and 10g Silver behenate (mass ratio is 1:50) are added ultrasonic disperse 40min in the mixed system that 200mL organic solvent (be that the tert-butyl alcohol of 1:1 and dioxane synthesize by volume ratio) and 200mL deionized water (volume ratio of organic solvent and deionized water is 1:1) form.Make the temperature of mixed system remain on 0 ~ 10 DEG C, while being uniformly mixed system, drip hydrazine hydrate by the mass volume ratio 1:150g/mL of graphite oxide and hydrazine hydrate in mixed system, rate of addition is 1.2mL/min.After at room temperature stirring 30min, be warming up to 70 DEG C of reaction 2h, obtain black suspension, be cooled to room temperature, filter, with washed with de-ionized water, vacuumize, obtain silver-graphene composite material.
As shown in Figure 1, silver nano-grain realizes effectively dispersion to the SEM figure of this silver-graphene composite material, forms fine and close effective silver-graphene composite conducting network, is conducive to improving charge transfer efficiency and stability.
Raw material is taken: the silver-graphene composite material of 40% by following mass percent, the PAUR of 32% (is synthesized by tetramethylene adipate and toluene di-isocyanate(TDI), molecular weight is 2800 ~ 4000), the aliphat enclosed type PIC (DesmodurBL) of 5%, the diluent of 23% (be that the DBE of 5:1 and diethylene glycol monobutyl ether acetate synthesize by volume ratio), PAUR, aliphat enclosed type PIC and diluent high speed dispersor are disperseed 6min, obtained organic carrier.After silver-graphene composite material being mixed with organic carrier on planet centrifugal blender after deaeration 8min, on three-roll grinder, rolling 4 times, obtains electrocondution slurry.
Embodiment 2
300mg graphite oxide and 6g caproic acid silver (mass ratio is 1:20) are added ultrasonic disperse 20min in the mixed system that 100mL organic solvent and 300mL deionized water (volume ratio of organic solvent and deionized water is 1:3) form.Make the temperature of mixed system remain on 0 ~ 10 DEG C, while being uniformly mixed system, drip hydrazine hydrate by the mass volume ratio 1:200g/mL of graphite oxide and hydrazine hydrate in mixed system, rate of addition is 1.5mL/min.After at room temperature stirring 30min, be warming up to 60 DEG C of reaction 2h, obtain black suspension, be cooled to room temperature, filter, with washed with de-ionized water, vacuumize, obtain silver-graphene composite material.
As shown in Figure 2, silver nano-grain realizes effectively dispersion to the SEM figure of this silver-graphene composite material, forms fine and close effective silver-graphene composite conducting network, is conducive to improving charge transfer efficiency and stability.
Raw material is taken: the silver-graphene composite material of 30% by following mass percent, the PAUR of 45% (is synthesized by tetramethylene adipate and toluene di-isocyanate(TDI), molecular weight is 2800 ~ 4000), the aliphat enclosed type PIC (DesmodurBL) of 9%, the diluent (DBE) of 16%, PAUR, aliphat enclosed type PIC and diluent high speed dispersor are disperseed 4min, obtained organic carrier.After silver-graphene composite material being mixed with organic carrier on planet centrifugal blender after deaeration 9min, on three-roll grinder, rolling 3 times, obtains electrocondution slurry.
Embodiment 3
180mg graphite oxide, 4g valeric acid silver and 3.3g silver stearate (mass ratio of graphite oxide and organic silver is 9:365) are added ultrasonic disperse 40min in the mixed system that 180mL organic solvent and 180mL deionized water (volume ratio of organic solvent and deionized water is 1:1) form.Make the temperature of mixed system remain on 0 ~ 10 DEG C, while being uniformly mixed system, drip hydrazine hydrate by the mass volume ratio 1:100g/mL of graphite oxide and hydrazine hydrate in mixed system, rate of addition is 0.8mL/min.After at room temperature stirring 20min, be warming up to 70 DEG C of reaction 3h, obtain black suspension, be cooled to room temperature, filter, with washed with de-ionized water, vacuumize, obtain silver-graphene composite material.
As shown in Figure 3, silver nano-grain realizes effectively dispersion to the SEM figure of this silver-graphene composite material, forms fine and close effective silver-graphene composite conducting network, is conducive to improving charge transfer efficiency and stability.
Raw material is taken: the silver-graphene composite material of 35% by following mass percent, the PAUR of 38% (is synthesized by tetramethylene adipate and toluene di-isocyanate(TDI), molecular weight is 2800 ~ 4000), the aliphat enclosed type PIC (DesmodurBL) of 7%, the diluent of 20% (be that the DBE of 10:1 and diethylene glycol monobutyl ether acetate synthesize by volume ratio), PAUR, aliphat enclosed type PIC and diluent high speed dispersor are disperseed 5min, obtained organic carrier.After silver-graphene composite material being mixed with organic carrier on planet centrifugal blender after deaeration 10min, on three-roll grinder, rolling 5 times, obtains electrocondution slurry.
The electrocondution slurry prepared by above-described embodiment carries out performance test, and concrete method of testing is as follows.
(1) electrical performance testing
On the poly (methyl methacrylate) plate that acetone wipes across, by 420 order web plates, print 0.20 × 1.50cm conductive line, after 150 DEG C × 30min solidifies, with Keithley (Keithley) 2400 four point probe instrument test material square resistance.Utilize film thickness gauge FISCHERSCOPE(MMS3AM) test features thickness, measure interface contact resistance by transmission line model (TLM).
(2) adhesive force and hardness test
3M600 adhesive tape is adhered on the sample lines on the hundred lattice resolution charts that have been cured, by parallel and each sticky one of vertical bar direction, firmly wipe flat with advanced drawing rubber, place after 1 minute, firmly vertically pull rapidly (10cm/s) adhesive tape, whether whether observation adhesive tape and sample lines have mucilage material and rete to pull.
Mitsubishi board advanced drawing pencil HB ~ 4H mono-group, with the pencil of different hardness to push away the conductive strips streaking and solidified before 45o angle, 2kg pressure, totally five road cuts, then wipe pencil vestige with erasing rubber, whether sample for reference surface scratches or breaks.
(3) printed resolution test
On cleaned ITO electro-conductive glass, print the conductive line (0.02 × 2.03mm) of different spacing, after 150 DEG C × 30min solidifies, utilize the template of subsiding of IPC-A-20 in J-STD-005 standard to test.
The partial test result of electrocondution slurry prepared by above-described embodiment is as shown in table 1.
The performance index of electrocondution slurry prepared by table 1 embodiment 1 ~ 3
As shown in Table 1, the present invention, under low silver content condition, can obtain good electric property, reaches thin-film solar cells instructions for use; The electrode material temperature-resistant wet formed after slurry curing, anti-scratch, to ITO material, there is good caking property and stability.
Silk screen printing resolution test result shows, the introducing of grapheme material substantially increases the printed resolution of electric slurry, is not using under thixotropic agents condition, 420 order screen painting fine rules, and fine rule width is 0.20 × 2.03mm, and track spacing can reach 75 μm; In the curing process, composite graphite alkene material also keeps function for slurry provides thixotropy heatproof, prevent from slurry from " heat " occurring before solidification completes to collapse, guarantee the realization of silver slurry high-quality fine rule performance, increase the effective light transmission area of solar cell to greatest extent.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. an electrocondution slurry, is characterized in that, each raw material following by mass percentage forms: the silver-graphene composite material of 30 ~ 40%, the organic resin of 30 ~ 48%, the crosslinking agent of 5 ~ 10% and the diluent of 12 ~ 26%;
Described silver-graphene composite material obtains as follows:
(1) graphite oxide and organic silver are added ultrasonic disperse 20 ~ 40min in the mixed system of organic solvent and deionized water composition in 1:20 ~ 50 in mass ratio, wherein, the volume ratio of organic solvent and deionized water is 1:1 ~ 3;
(2) make the temperature of mixed system remain on 0 ~ 10 DEG C, while being uniformly mixed system, drip hydrazine hydrate by the mass volume ratio 1:100 ~ 200g/mL of graphite oxide and hydrazine hydrate in mixed system, rate of addition is 0.8 ~ 1.5mL/min;
(3) after at room temperature stirring 20 ~ 30min, be warming up to 60 ~ 70 DEG C, reaction 2 ~ 3h, is cooled to room temperature, filters, with washed with de-ionized water, vacuumize, obtains silver-graphene composite material.
2. electrocondution slurry as claimed in claim 1, is characterized in that, the described organic silver at least one that to be carbon atom quantity be in the straight or branched representative examples of saturated aliphatic monocarboxylic acid silver compound of 5 ~ 22.
3. electrocondution slurry as claimed in claim 1 or 2, it is characterized in that, described organic solvent is at least one in methyl alcohol, ethanol, ethylene glycol, isopropyl alcohol, the tert-butyl alcohol, acetone, methylethylketone, DMF, dimethyl sulfoxide (DMSO), oxolane, glacial acetic acid, acetonitrile and dioxane.
4. electrocondution slurry as claimed in claim 1 or 2, it is characterized in that, described organic resin is at least one in saturated polyester, EU and PAUR, described crosslinking agent is aromatic series or aliphat enclosed type PIC, deblocking temperature is 130 ~ 150 DEG C, and described diluent is at least one in diethylene glycol ether acetate, diethylene glycol pentyl ester, diethylene glycol, diethylene glycol monobutyl ether acetate, high boiling solvent mixed dibasic acid fat, butyl carbitol acetate and butyl carbitol.
5. a preparation method for electrocondution slurry, is characterized in that, comprises the steps:
(1) prepare silver-graphene composite material, comprise the steps: further
(1-1) graphite oxide and organic silver are added ultrasonic disperse 20 ~ 40min in the mixed system of organic solvent and deionized water composition in 1:20 ~ 50 in mass ratio, wherein, the volume ratio of organic solvent and deionized water is 1:1 ~ 3;
(1-2) make the temperature of mixed system remain on 0 ~ 10 DEG C, while being uniformly mixed system, drip hydrazine hydrate by the mass volume ratio 1:100 ~ 200g/mL of graphite oxide and hydrazine hydrate in mixed system, rate of addition is 0.8 ~ 1.5mL/min;
(1-3) after at room temperature stirring 20 ~ 30min, be warming up to 60 ~ 70 DEG C, reaction 2 ~ 3h, is cooled to room temperature, filters, with washed with de-ionized water, vacuumize, obtains silver-graphene composite material;
(2) by mass percentage be 30 ~ 40% silver-graphene composite material mix obtained electrocondution slurry with organic carrier.
6. the preparation method of electrocondution slurry as claimed in claim 5, it is characterized in that, in described step (2), raw material is taken: the silver-graphene composite material of 30 ~ 40% by following mass percent, the organic resin of 30 ~ 48%, the crosslinking agent of 5 ~ 10% and the diluent of 12 ~ 26%, by organic resin, crosslinking agent and diluent dispersion 4 ~ 6min, obtained organic carrier.
7. the preparation method of electrocondution slurry as claimed in claim 6, it is characterized in that, described organic resin is at least one in saturated polyester, EU and PAUR, described crosslinking agent is aromatic series or aliphat enclosed type PIC, deblocking temperature is 130 ~ 150 DEG C, and described diluent is at least one in diethylene glycol ether acetate, diethylene glycol pentyl ester, diethylene glycol, diethylene glycol monobutyl ether acetate, high boiling solvent mixed dibasic acid fat, butyl carbitol acetate and butyl carbitol.
8. the preparation method of the electrocondution slurry according to any one of claim 5 to 7, it is characterized in that, in described step (2), after silver-graphene composite material is mixed with organic carrier on planet centrifugal blender after deaeration 8 ~ 10min, on three-roll grinder, rolling 3 ~ 5 times, obtains electrocondution slurry.
9. a thin-film solar cells, is characterized in that, uses the electrocondution slurry according to any one of claim 1 to 4.
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| TWI778976B (en) * | 2016-09-15 | 2022-10-01 | 德商漢高股份有限及兩合公司 | Graphene-containing materials for coating and gap filling applications |
| CN108530999B (en) * | 2018-04-26 | 2020-09-01 | 云南大学 | Conductive anticorrosive paint using organic silver as photocuring accelerator |
| CN109265971A (en) * | 2018-08-15 | 2019-01-25 | 句容协鑫集成科技有限公司 | A kind of terminal box is used foreign currency the preparation method of flow |
| CN109645986B (en) * | 2018-11-30 | 2021-10-22 | 昆明贵金属研究所 | Low-temperature cured silver/silver chloride slurry for flexible bioelectrode and preparation method thereof |
| CN109811382B (en) * | 2019-03-28 | 2021-04-20 | 烟台恒诺新材料有限公司 | Application of graphene oxide conductive paste in black hole direct electroplating |
| CN115732117B (en) * | 2022-03-08 | 2024-01-19 | 重庆恩辰新材料科技有限责任公司 | Conductive silver paste for ceramic surface circuit printing and preparation method and application thereof |
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| CN102136306A (en) * | 2010-11-10 | 2011-07-27 | 西北师范大学 | Ag/graphene nanometer conductive compound material and preparation method thereof |
| CN102254584A (en) * | 2011-05-12 | 2011-11-23 | 中国科学院宁波材料技术与工程研究所 | General electronic paste based on graphene filler |
| CN103074619A (en) * | 2013-02-06 | 2013-05-01 | 上海应用技术学院 | Graphene oxide-silver compound particle and preparation method thereof |
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| KR101359771B1 (en) * | 2012-02-17 | 2014-02-13 | 영남대학교 산학협력단 | Composites of graphene decorated with silver nanoparticles and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136306A (en) * | 2010-11-10 | 2011-07-27 | 西北师范大学 | Ag/graphene nanometer conductive compound material and preparation method thereof |
| CN102254584A (en) * | 2011-05-12 | 2011-11-23 | 中国科学院宁波材料技术与工程研究所 | General electronic paste based on graphene filler |
| CN103074619A (en) * | 2013-02-06 | 2013-05-01 | 上海应用技术学院 | Graphene oxide-silver compound particle and preparation method thereof |
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