Used as an ionic liquid in electrochemical applications such as lithium-ion batteries and supercapacitors due to its high thermal stability and wide electrochemical window. Its low volatility and good solvating properties make it suitable as a solvent in organic synthesis and catalysis. Also employed in dye-sensitized solar cells to enhance device efficiency and stability. Commonly utilized in separation processes, including gas absorption and extraction, because of its tunable polarity and selectivity.