What is it about?
A new group of ionic liquids based on tetraethylphosphonium and tetrabutylphosphonium cations together with several carboxylate anions is proposed and presented in this report. In obtained ionic liquids, tetrabutylphosphonium formate and tetrabutyl- phosphonium lactate became room temperature ionic liquids. It was found that the phosphonium ionic liquids showed the typical VTF-type convex curve behaviors. The phosphonium ionic liquids also had a high cathodic stability similar to those of the TFSA- and FSA-anion based phosphonium ionic liquids. On the other hand, relatively low anodic potential window was observed. The thermal stability of the phosphonium ionic liquids showed higher thermal stabilities than those of the corresponding ammonium ionic liquids.
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Why is it important?
The most important meaning for this study is the production of a new type ionic liquid. We expect it would lead to conductive composite materials and secondary battery ones.
Perspectives
This is a joint program among some Japanese colleges of National Institute of Technology (NIT). I believe the new type of ionic liquids will open a new door for many industrial applications.
Professor Hideyuki Kanematsu
National Institute of Technology, Suzuka College
Read the Original
This page is a summary of: Physical and Electrochemical Properties of Ionic Liquids Based on Quaternary Phosphonium Cations and Carboxylate Anions as Electrolytes, ECS Transactions, January 2017, The Electrochemical Society,
DOI: 10.1149/07552.0105ecst.
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