Used primarily as an ionic liquid in electrochemical applications due to its high ionic conductivity and wide electrochemical stability window. Commonly employed in lithium-ion batteries and supercapacitors as a component of the electrolyte, where it enhances thermal stability and reduces flammability compared to conventional organic solvents. Its low volatility and good solvating properties make it suitable for dye-sensitized solar cells and fuel cells. Also used in separation processes and as a green solvent in organic synthesis, where its inertness and tunable polarity support efficient and safer reactions.