Phosphonium-based ionic liquids as electrolyte for supercapacitors

Abstract

Over the last several years ionic liquids based on phosphorus salts have been attractive as the subject of many investigations for a myriad of applications in different fields, in particular, in batteries and supercapacitors. We focused on the applications of phosphorous-based ionic liquids as electrolyte for supercapacitors. Conductivity of synthesized tri(tert-butyl)(decyl)phosphonium tetrafluoroborate was studied in carbon paste electrode composite . Cyclic voltammogram was obtained in CH₃CN solution. Electrochemical properties, energy data and conductivity make the phosphonium ionic liquids particularly attractive as electrolytes for supercapacitors.

Graphical Abstract

Keywords:

• Ionic liquids
• supercapacitors
• phosphonium
• electrolyte

Acknowledgment

The authors gratefully acknowledge the CSF-SAC FRC KSC RAS for the registration of infrared spectra (NMR, ESI, Raman, etc.).

Disclosure statement

The authors confirm that this article content has no conflict of interest.