Flexible High Performance Lithium Ion Battery Electrode Based on Free-Standing TiO2 Nanocrystals/Carbon Cloth Composite

Wednesday, 4 October 2017
Prince George's Exhibit Hall D/E (Gaylord National Resort and Convention Center)
R. Tjandra, G. Li (University of Waterloo), X. Wang (Concordia University), J. Yan, M. Li, and A. Yu (University of Waterloo)
Wearable and flexible electronics is an emerging and popular area of research. However, the availability of flexible energy storage to accompany these devices is lacking. Herein, a flexible electrode based on a composite of TiO2 nanocrystals and carbon cloth was synthesized by a simple drop-casting method followed a post-annealing treatment. The obtained TiO2/carbon cloth electrode shows a reversible capacity of 280-310 mAh g-1 at a current density of 100 mA g-1. The composite electrode also exhibits excellent mechanical stability even after 100 cycles of flexion. A proof-of-concept flexible pouch half-cell was assembled and it was able to power an LED bulb under flexion.