Issue 32, 2012

1H-1,2,4-Triazole as solvent for imidazolium methanesulfonate

Abstract

The solvation effect of 1H-1,2,4-triazole towards imidazolium methanesulfonate was studied by blending imidazolium methanesulfonate and 1H-1,2,4-triazole. Upon addition of 1H-1,2,4-triazole, the melting point of imidazolium methanesulfonate was lowered to less than 100 °C while maintaining the high ionic conductivity for a wide composition range of the blend. The ionic conductivity of the blend can be adequately described by using the Vogel–Fulcher–Tamman equation. A vehicle mechanism is postulated to govern the proton conduction for the blend. The contribution of protons to the ionic conductivity was corroborated electrochemically. The blend exhibited electrochemical activities for H2 oxidation and O2 reduction at a Pt electrode, as well as a wide electrochemical window. Therefore, suitable blends can possibly serve as electrolytes for polymer electrolyte membrane fuel cells operating under non-humidifying conditions. The solvation effect studied herein suggests a promising approach to a wider application area of protic ionic liquids.

Graphical abstract: 1H-1,2,4-Triazole as solvent for imidazolium methanesulfonate

Article information

Article type
Paper
Submitted
05 Apr 2012
Accepted
13 Jun 2012
First published
13 Jun 2012

Phys. Chem. Chem. Phys., 2012,14, 11441-11447

1H-1,2,4-Triazole as solvent for imidazolium methanesulfonate

J. Luo, T. V. Tan, O. Conrad and I. F. J. Vankelecom, Phys. Chem. Chem. Phys., 2012, 14, 11441 DOI: 10.1039/C2CP41098B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements