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Graphene Coatings for Biomedical Implants
Published on: March 1, 2013
Highly conducting Laser-Induced Graphene-Ag nanoparticle composite as an effective supercapacitor electrode with
Abhishek Prakash1, Sowmya R Holla2, Subbalaxmi Selvaraj3
1Department of Electronics & Communication Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education (MAHE), Manipal, 576104, India.
Abstract:
This study presents a simple and an environmentally friendly approach to make Laser-Induced Graphene (LIG) based supercapacitor electrodes anchored with abundant Silver Nanoparticles (AgNPs). LIG, was synthesized using a CO2 laser writing technique on polyimide substrate. The LIG-Ag composite was prepared using two techniques, drop-coating, and screen-printing. Ag nanoparticles prepared using the plant extract of Swietenia Macrophylla was utilized to drop-coat AgNP on LIG substrate. Screen-printing was done by using a commercial Ag-ink and a suitable mesh. The supercapacitor made from screen-printed electrodes and supercapacitor made form drop-coated electrodes showed a high specific capacitance of 118 mF/cm2, 38 mF/cm2, and a high energy density of 2.42 mWh/cm2, 0.05 mWh/cm2 respectively. The screen-printed composite of LIG and AgNP was further studied for its anti-fungal properties and proved to be effective against Candida sp.
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