Pyrrolidinium-based organic ionic plastic crystals: Relationship between side chain length and properties
作者:Hiromasa Yamada、Yukari Miyachi、Yuko Takeoka、Masahiro Rikukawa、Masahiro Yoshizawa-Fujita
DOI:10.1016/j.electacta.2019.02.076
日期:2019.4
range of plastic crystal behavior and high ionic conductivity at room temperature. In this study, the relationship between the side chain structure of pyrrolidinium and the physicochemical properties of their compounds with FSA was investigated. With two introduced ethyl groups, N,N-diethylpyrrolidinium bis(fluorosulfonyl)amide ([C2epyr][FSA]) showed higher ionic conductivity than [C2mpyr][FSA], while
由于有机离子塑料晶体(OIPC)具有理想的特性,例如不可燃性,可塑性和离子传导性,因此已被研究为固态电解质。但是,它们的导电塑性晶体相的温度范围狭窄。我们以前曾报道过,N-乙基-N-甲基吡咯烷鎓双(氟磺酰基)酰胺([C 2 mpyr] [FSA])在室温下表现出较宽的塑性晶体行为温度范围和高离子电导率。在这项研究中,研究了吡咯烷鎓的侧链结构与其化合物与FSA的理化性质之间的关系。具有两个引入的乙基N,N-二乙基吡咯烷鎓双(氟磺酰基)酰胺([C 2吡咯] [FSA])显示出比[C 2 mpyr] [FSA]高的离子电导率,同时保持了足够的塑性晶体相温度范围。通过添加5 mol%LiFSA,可以进一步提高[C 2 epyr] [FSA]的离子电导率。对于复合有5 mol%LiFSA的[C 2 epyr] [FSA],在60°C下锂的迁移数被确定为0.27。在CV测量中,在Ni电极上观察到可逆的