CARBON PASTE ELECTRODE MODIFIED TI3C2 MXENE NANOSHEET AND NIO NANOPOROUS AS ELECTROCATALYST HYDROGEN EVOLUTION REACTION

• Main Author: Febrianti Nuraini, Aninda
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/72840
• Institution: Institut Teknologi Bandung

MXene (Ti3C2) is a layered nanomaterial and classified as a two-dimensional material that MXene has great potential as an electrocatalyst for hydrogen evolution reaction because it has good structure, chemical and mechanical stability, high electrical conductivity (200 S/cm), and wide active surface. Hydrogen evolution reaction is a reaction that produces hydrogen through the electrolysis of water. It is known that hydrogen is one of the renewable and alternative energies in the future that is currently a concern. NiO is an oxidizing material that also has potential as an HER electrocatalyst because it has a Ni site which functions as an active site for adsorption and dissociation of water in alkaline solutions. By combining the advantages of MXene and NiO for modification of carbon paste electrodes, it is expected to have better performance for the hydrogen evolution reaction. The purpose of this study was to synthesize Ti3C2 MXene nanosheet dand NiO nanoporous and to test electrochemical perform on the hydrogen evolution reaction using carbon paste electrode. The research has successfully synthesized MXene (Ti2C3) from MAX (Ti3AlC2) which is supported by XRD, IR, Raman, SEM, and TEM characterization. In addition, this research also succeeded in synthesizing NiO with a nanoporous structure supported by XRD, IR, Raman, and TEM characterization. Then, based on the EDX Mapping results, MXene and NiO were spread evenly on the surface of the carbon paste electrode. The electrochemical test of the hydrogen evolution reaction showed that EPK-MXene/NiO has better performance than bare EPK, EPK-MXene, and EPK-NiO because EPK-MXene/NiO has an overpotential value of 594 mV and a Tafel slope of 28 mV/dec, smaller than the overpotential and Tafel slope of bare EPK, EPK-MXene, and EPK- NiO. In addition, MXene and NiO electrocatalysts have superior stability in hydrogen evolution reactions because they have low hydrogen stabilizing energy.