Thermophysical and Electrochemical Properties of Ethereal Functionalised Cyclic Alkylammonium-based Ionic Liquids as Potential Electrolytes for Electrochemical Applications
作者:Alex R. Neale、Sinead Murphy、Peter Goodrich、Christopher Hardacre、Johan Jacquemin
DOI:10.1002/cphc.201700246
日期:2017.8.5
piperidinium and azepanium cations bearing the bis[(trifluoromethyl)sulfonyl]imide, [TFSI]−, anion were synthesized and characterized. Their physicochemical properties such as density, viscosity and electrolytic conductivity, and thermal properties including phase transition behaviour and decomposition temperature have been measured. All of the ILs showed low melting point, low viscosity and good conductivity
合成并表征了一系列基于醚官能化吡咯烷鎓,哌啶鎓和氮杂鎓阳离子并带有双[(三氟甲基)磺酰基]酰亚胺,[TFSI] -阴离子的疏水性室温离子液体。已经测量了它们的物理化学性质,例如密度,粘度和电解电导率,以及包括相变行为和分解温度在内的热性质。所有IL均显示出低熔点,低粘度和良好的电导率,并且已根据IL脆性讨论了后者的性能,IL易碎性是形成玻璃的IL传输性质的重要电解质特征。此外,研究的[TFSI] -基于基团的离子分子通常表现出良好的电化学稳定性,并且通过结合电化学实验和DFT计算,讨论了在IL阳离子上醚官能化对IL电化学稳定性的影响。还报道了在铜工作电极上对Li-redox化学的初步研究,它是基于吡咯烷鎓的IL系列中醚官能度的函数。总体而言,结果表明这些离子液体适用于电化学设备,例如电池系统,燃料电池或超级电容器。