Graphene-based water-based ink and application thereof in ink-jet printing of patterning transparent conducting electrode
A kind of alkenyl water-based and graphene technology, which is applied in the direction of conductive materials dispersed in non-conductive inorganic materials, application, printing, etc., can solve the problems that the conductivity of inkjet patterns needs to be improved, and achieve excellent conductivity and transparency. The effect of controllable product and low post-treatment temperature
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Embodiment 1
[0029] The graphene-based water-based ink is composed of a composite of graphene oxide and silver nanoparticles and water, the mass fraction of the composite of graphene oxide and silver nanoparticles is 2.4%, and the mass ratio of graphene oxide to silver nanoparticles is 0.5; The diameter of graphene is less than 2 μm; the particle diameter of silver nanoparticles is less than 100 nm.
[0030] Synthesis of graphene oxide: the graphene oxide prepared by the improved Hummer method is a golden yellow product; the product is treated with an ultrasonic crusher 200W for 2 hours, and then passed through a 1 μM filter membrane to remove large-scale graphene oxide; the obtained solid is in Vacuum-dried overnight at room temperature to obtain the obtained product.
[0031] Synthesis of silver nanoparticles: 100 μL of 10 wt% sodium citrate solution and 50 μL of 10 wt% silver nitrate solution were added to 1 mL of water, and stirred at room temperature until the color changed from white...
Embodiment 2
[0036] The graphene-based water-based ink is composed of a composite of graphene oxide and silver nanoparticles and an acetone solution with a volume fraction of 20%, the mass fraction of the composite of graphene oxide and silver nanoparticles is 4.5%, and the composite of graphene oxide and silver nanoparticles is The mass ratio of the particles is 0.2; the diameter of the graphene oxide is less than 2 μm; the particle diameter of the silver nanoparticles is less than 100 nm.
[0037] Synthesis of graphene oxide: the graphene oxide prepared by the improved Hummer method is a golden yellow product; the product is treated with an ultrasonic crusher at 200W for 2 hours, and then passed through a 1 μM filter membrane to remove large-sized graphene oxide; the obtained solid Vacuum-dried overnight at room temperature to obtain the obtained product.
[0038] Synthesis of silver nanoparticles: 100 μL of 0.1mol / L sodium citrate solution and 45 μL of 0.1mol / L silver nitrate solution w...
Embodiment 3
[0043] Graphene-based water-based ink consists of a composite of graphene and silver nanoparticles and a saturated aqueous solution of ethyl acetate at 30°C. The mass fraction of the composite of graphene and silver nanoparticles is 3.1%. Graphene is obtained by liquid phase exfoliation , the mass ratio of graphene to silver nanoparticles is 0.15; the diameter of graphene is less than 2 μm; the particle diameter of silver nanoparticles is less than 100 nm.
[0044] Synthesis of silver nanoparticles: 100 μL of 10wt% tartaric acid solution and 50 μL of 10wt% silver nitrate solution were added to 1 mL of water, stirred at room temperature until the color changed from white to colorless to obtain mixed solution A; 49 μL of 0.1mol / Mix L of ascorbic acid and 49 μL of 5mmol / L potassium iodide, add it to water at 80°C whose volume is 1000 times that of the ascorbic acid solution, and stir evenly to obtain a mixed solution B; after heating the mixed solution B to boil, inject the mixed...
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