Phys.org September 4, 2024
Recently new ionic fluids such as super-concentrated electrolyte solutions, solvate ionic liquids and deep eutectic solvents have attracted much attention in the field of liquid electrolytes for next-generation electrochemical devices and processes. The basic composition of these new ionic fluids is similar among them; a solvent and a large/excess amount of salt mixtures, though the solvent is sometimes a solid at ambient temperatures. Researchers in Japan found and demonstrated that LiTFSA (TFSA = (CF3SO2)2N−) mixtures with 1,3-propane sultone (PS) or tetrahydrothiophene-1,1-dioxide (SL) yielded a homogeneous liquid at room temperature within a wide range of compositions. In order to clarify the uniquely high Li+ transference number in these mixtures, they studied the speciation and dipole reorientation dynamics to provide evidence of large-size aggregate formation in these mixtures… read more. TECHNICAL ARTICLE
Graphical abstract. Credit: Faraday Discussions, 10 Jun 2024