Composite
WO<sub>3</sub>/TiO<sub>2</sub> Nanostructures for High Electrochromic
Activity
- Publication date
- Publisher
Abstract
A composite
material consisting of TiO<sub>2</sub> nanotubes (NT) with WO<sub>3</sub> electrodeposited on its surface has been fabricated, detached
from its Ti substrate, and attached to a fluorine-doped tin oxide
(FTO) film on glass for application to electrochromic (EC) reactions.
Several adhesion layers were tested, finding that a paste of TiO<sub>2</sub> made from commercially available TiO<sub>2</sub> nanoparticles
creates an interface for the TiO<sub>2</sub> NT film to attach to
the FTO glass, which is conductive and does not cause solution-phase
ions in an electrolyte to bind irreversibly with the material. The
effect of NT length and WO<sub>3</sub> concentration on the EC performance
were studied. The composite WO<sub>3</sub>/TiO<sub>2</sub> nanostructures
showed higher ion storage capacity, better stability, enhanced EC
contrast, and longer memory time compared with the pure WO<sub>3</sub> and TiO<sub>2</sub> materials
