Tetraethylammonium nitrate is primarily used in research and development within the field of chemistry, particularly in studies involving ion transport and electrochemical processes. It serves as a source of tetraethylammonium ions, which are often employed to investigate the behavior of ion channels in biological membranes. The compound is also utilized in the preparation of ionic liquids, which are essential in various applications such as solvents, electrolytes, and catalysts in chemical reactions. Additionally, it finds use in electrochemistry for studying electrode processes and in the development of electrochemical sensors. Its role in these areas highlights its importance in advancing scientific understanding and technological innovation.