@article { author = {Loganathan, Narasimhaa Naidu and Munusamy, Kabilashen Readdyi and Perumal, Veeradasan and Pandian, Bothi Raja}, title = {Laser Scribed Graphene from Oil Palm Lignin for Supercapacitor Applications}, journal = {Journal of Water and Environmental Nanotechnology}, volume = {6}, number = {4}, pages = {356-366}, year = {2021}, publisher = {Iranian Environmental Mutagen Society}, issn = {2476-7204}, eissn = {2476-6615}, doi = {10.22090/jwent.2021.04.006}, abstract = {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.}, keywords = {Reduced graphene oxide,electric double layer capacitor,laser lithography,graphene electrode,biopolymer}, url = {https://www.jwent.net/article_248287.html}, eprint = {https://www.jwent.net/article_248287_fab6c46ffc8ac4c3bdcf02c12efb3106.pdf} }