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Mohd-Yasin, Faisal
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Graphene Composite Blueberries based Pencil Lead act as Superhydrophobic Coating on Plastic Surfaces for Solar Application
Abstract
This paper presents graphene composite blueberries based on pencil lead of superhydrophobic coating in plastic surfaces for solar application. The objectives of this study were to formulate and synthesis graphene composites based on pencil lead of superhydrophobic coating and also to evaluate its physical properties in plastic surfaces for solar cell application. For this study, a mixture of graphite powder from pencil lead and electrolytes (iodine crystals, potassium iodide and anhydrous ethylene glycol) with 10mg blueberries as catalyst had been synthesised forming a graphene composite blueberry based on pencil lead and later on was coated with superhydrophobic coating to be used in the solar cell application. For intensity test, sample with three layers of graphene showed highest voltage at 31 which is approximately up to 207.81 mV whereas for electrical conductivity test, the same sample showed highest reading at 31 with 188 (S/cm) conductivity. As for water droplet test, highest contact angle is shown by the sample with three layers of graphene composite with contact angle () up to 145. In terms of surface roughness, sample with three layers of graphene has the most excellent superhydrophobic characteristics with its degree of roughness up to 17.704 . It is shown that samples with three layers of graphene able to absorb as much energy and produced highest energy output for solar cell application as compared to the other two samples with lesser layers of graphene. In conclusion, this newly developed graphene composite based on pencil lead shows a huge potential in providing a robust and excellent superhydrophobic properties where it was shown that with higher layers of graphene, the contact angle () would also be higher which is almost up to 150.