Triethylmethylammonium tetrafluoroborate is widely used as an electrolyte in electrochemical applications, particularly in supercapacitors and batteries. Its high ionic conductivity and stability make it suitable for enhancing the performance of energy storage devices. Additionally, it serves as a phase-transfer catalyst in organic synthesis, facilitating reactions between compounds in different phases, such as aqueous and organic solutions. This chemical is also employed in the preparation of ionic liquids, which are utilized in various industrial processes due to their low volatility and high thermal stability. Furthermore, it finds application in electroplating and metal finishing processes, where it helps improve the quality and durability of coatings.