Lithium ion conductive behavior of TiO2 nanotube/ionic liquid matrices

Raman Vedarajan; Makoto Ogawa; Noriyoshi Matsumi

doi:10.1186/1556-276X-9-539

Lithium ion conductive behavior of TiO2 nanotube/ionic liquid matrices

Nanoscale Res Lett. 2014 Oct 1;9(1):539. doi: 10.1186/1556-276X-9-539. eCollection 2014.

Authors

Raman Vedarajan¹, Makoto Ogawa¹, Noriyoshi Matsumi¹

Affiliation

¹ School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan.

Abstract

A series of TiO2 nanotube (TNT)/ionic liquid matrices were prepared, and their lithium ion conductive properties were studied. SEM images implied that ionic liquid was dispersed on the whole surface of TNT. Addition of TNT to ionic liquid (1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide (BMImTFSA)) resulted in significant increase of ionic conductivity. Furthermore, lithium transference number was also largely enhanced due to the interaction of anion with TNT. Vogel-Fulcher-Tammann parameter showed higher carrier ion number for TNT/BMImTFSA in comparison with BMImTFSA.

Keywords: Ionic liquid; Lewis acid; Lithium ion; TiO2 nanotube.