%0 Journal Article %T Laser Scribed Graphene from Oil Palm Lignin for Supercapacitor Applications %J Journal of Water and Environmental Nanotechnology %I Iranian Environmental Mutagen Society %Z 2476-7204 %A Loganathan, Narasimhaa Naidu %A Munusamy, Kabilashen Readdyi %A Perumal, Veeradasan %A Pandian, Bothi Raja %D 2021 %\ 10/01/2021 %V 6 %N 4 %P 356-366 %! Laser Scribed Graphene from Oil Palm Lignin for Supercapacitor Applications %K Reduced graphene oxide %K electric double layer capacitor %K laser lithography %K graphene electrode %K biopolymer %R 10.22090/jwent.2021.04.006 %X This paper reports a facile carbonization method of a biopolymer to synthesize reduced graphene oxide with excellent electrochemical properties for use as a supercapacitor electrode. Oil palm lignin is used as the biopolymer-based graphene precursor, and a carbon dioxide laser is used to carbonize the material via lithography. Using Raman Spectroscopy, the characterization of the resultant graphene (OP-LSG) revealed D, G, and 2D peaks corresponding to multilayer graphene. Scanning Electron Microscopy of OP-LSG revealed three-dimensional particle-like fibrous and porous nanostructures with an enhanced surface area. In a three-electrode setup in ferrocyanide electrolyte, cyclic voltammetry showed the electrode coated with OP-LSG achieving a specific capacitance as high as 108.044 mF/cm² at a scan rate of 0.01 V/s. The galvanostatic charge-discharge of OP-LSG revealed energy and power density values of 15 µWh/cm² and 597 µW/cm² at a scan rate of 0.01 V/s. The OP-LSG electrode retained 97.5% of its initial capacitance after 1000 charge-discharge cycles. %U https://www.jwent.net/article_248287_fab6c46ffc8ac4c3bdcf02c12efb3106.pdf