In this work, we developed eutectic electrolytes composed of HTFSA and MTFAA, which form stable hydrogen-bonded liquids functioning as nonflammable proton battery electrolytes. They effectively suppress the dissolution of TiOx that readily dissolves in acidic aqueous media, delivering a reversible capacity of 116 mA h g-1 after 50 cycles.
Shimizu et al. (Thu,) studied this question.