Magnesium(II) bis(trifluoromethanesulfonyl)imide is widely used as an electrolyte salt in advanced battery systems, particularly in magnesium-ion batteries. Its high ionic conductivity and electrochemical stability make it suitable for enhancing battery performance and energy density. This compound is also employed in the development of solid-state electrolytes, which are crucial for safer and more efficient energy storage solutions. Additionally, it finds applications in supercapacitors and other electrochemical devices where stable and efficient ion transport is essential. Its compatibility with various solvents and materials further extends its use in research and industrial applications focused on next-generation energy technologies.