Jump to main content
Jump to site search

Issue 23, 2017

Enhanced conductivity of sodium versus lithium salts measured by impedance spectroscopy. Sodium cobaltacarboranes as electrolytes of choice

Author affiliations

Abstract

The development of new types of ion conducting materials is one of the most important challenges in the field of energy. Lithium salt polymer electrolytes have been the most convenient, and thus the most widely used in the design of the new generation of batteries. However, in this work, we have observed that Na+ ions provide a higher conductivity, or at least a comparable conductivity to that of Li+ ions in the same basic material. This provides an excellent possibility to use Na+ ions in the design of a new generation of batteries, instead of lithium, to enhance conductivity and ensure wide supply. Our results indicate that the dc-conductivity is larger when the anion is [Co(C2B9H11)2], [COSANE], compared to tetraphenylborate, [TPB]. Our data also prove that the dc-conductivity behavior of Li+ and Na+ salts is opposite with the two anions. At 40 °C, the conductivity values change from 1.05 × 10−2 S cm−1 (Li[COSANE]) and 1.75 × 10−2 S cm−1 (Na[COSANE]) to 2.8 × 10−3 S cm−1 (Li[TPB]) and 1.5 × 10−3 S cm−1 (Na[TPB]). These findings indicate that metallacarboranes can be useful components of mixed matrix membranes (MMMs), providing excellent conductivity when the medium contains sufficient amounts of ionic components and a certain degree of humidity.

Graphical abstract: Enhanced conductivity of sodium versus lithium salts measured by impedance spectroscopy. Sodium cobaltacarboranes as electrolytes of choice

Supplementary files

Article information


Submitted
18 Apr 2017
Accepted
16 May 2017
First published
31 May 2017

Phys. Chem. Chem. Phys., 2017,19, 15177-15186
Article type
Paper

Enhanced conductivity of sodium versus lithium salts measured by impedance spectroscopy. Sodium cobaltacarboranes as electrolytes of choice

I. Fuentes, A. Andrio, F. Teixidor, C. Viñas and V. Compañ, Phys. Chem. Chem. Phys., 2017, 19, 15177 DOI: 10.1039/C7CP02526B

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

Search articles by author

Spotlight

Advertisements