Mori Sawako, Obora Takahito, Namaki Mizuka, Kondo Mitsuru, Moriya Makoto
Department of Science, Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka 422-8529, Japan.
Department of Chemistry, Faculty of Science, Shizuoka University, Shizuoka 422-8529, Japan.
Inorg Chem. 2022 May 16;61(19):7358-7364. doi: 10.1021/acs.inorgchem.2c00307. Epub 2022 May 3.
The development of solid electrolytes with Mg-ion conductivity at room temperature is an important issue to achieve all-solid magnesium batteries. We focus on organic ionic crystals with Mg-ion conduction paths in addition to nonflammable and nonvolatile features as an innovative candidate of solid electrolytes with Mg-ion conductivity. Herein, we show the development of novel organic ionic crystals, [N(CH)(CHCH)][Mg{N(SOCF)}] ( = 0 or 2), using analogs of ionic liquids, [N(CH)][N(SOCF)] (NTFSA) and [N(CH)(CHCH)][N(SOCF)] (NTFSA), and magnesium salt, Mg{N(SOCF)} (Mg(TFSA)). We also report the crystal structures of the obtained crystals and the high Mg-ion conductivity of 10 S cm under mild conditions of 80 °C in the solid state. These results indicate that organic ionic crystals with ion conduction paths have significant potential as safe solid electrolytes and provide insights into developing innovative Mg-ion conductors.
开发具有室温镁离子传导性的固体电解质是实现全固态镁电池的一个重要问题。除了具有不可燃和不挥发的特性外，我们还关注具有镁离子传导路径的有机离子晶体，将其作为具有镁离子传导性的固体电解质的一种创新候选材料。在此，我们展示了使用离子液体类似物[N(CH)][N(SOCF)]（NTFSA）和[N(CH)(CHCH)][N(SOCF)]（NTFSA）以及镁盐Mg{N(SOCF)}（Mg(TFSA)）开发新型有机离子晶体[N(CH)(CHCH)][Mg{N(SOCF)}]（ = 0或2）的过程。我们还报道了所获得晶体的晶体结构以及在80°C温和固态条件下10 S cm的高镁离子传导率。这些结果表明，具有离子传导路径的有机离子晶体作为安全的固体电解质具有巨大潜力，并为开发创新的镁离子导体提供了见解。
