Widely used as a supporting electrolyte in electrochemical studies due to its high solubility in organic solvents and stability under various conditions. It plays a crucial role in cyclic voltammetry and other electrochemical techniques, helping to maintain ionic strength and conductivity in non-aqueous systems. Additionally, it is employed in the synthesis of ionic liquids and as a phase-transfer catalyst in organic reactions, facilitating the transfer of reactants between immiscible phases. Its application extends to the preparation of conductive polymers and as an additive in lithium-ion batteries to enhance electrolyte performance.