Used as a precursor in the synthesis of ionic liquids, particularly those applied in electrochemical devices such as batteries and capacitors due to its ionic conductivity and thermal stability. Also employed in organic synthesis as a reagent or catalyst support where mild ammonium-based conditions are required. Its fluoride content makes it suitable for certain fluorination reactions or as a source of tetrafluoroborate anion in coordination chemistry. Additionally, it finds use in surface treatment processes and material science for modifying substrate properties.