Frederik PHILIPPI1, Keisuke SHIGENOBU1, Kaoru DOKKO1, Masayoshi WATANABE1, Kazuhide UENO1
1Yokohama National University, Yokohama, Japan
Recently, solvate electrolytes have attracted attention as promising basis for Lithium-ion batteries. Solvate electrolytes are formed by combining a (Lithium) salt with a solvent such as sulfones or glymes. In contrast to conventional electrolytes, the concentration of salt is chosen to be very high, commonly using solvent to salt ratios of 2 to 3. However, such high concentrations of salt result in high viscosities and thus low conductivities of most solvate electrolytes. In addition, those solvate electrolytes with the highest conductivity often suffer from poor Lithium transference, which reduces battery efficiency. In this talk we present recent results of our efforts to develop solvate electrolytes with both high conductivity and high Lithium transference number.