Composite WO3/TiO2 Nanostructures for High Electrochromic Activity | Zendy

Karla R. Reyes-Gil | Zendy; Zachary D. Stephens | Zendy; Vitalie Stavila | Zendy; David Robinson | Zendy

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Composite WO₃/TiO₂ Nanostructures for High Electrochromic Activity

Author(s) -

Karla R. Reyes-Gil,

Zachary D. Stephens,

Vitalie Stavila,

David Robinson

Publication year - 2015

Publication title -

acs applied materials and interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.535

H-Index - 228

eISSN - 1944-8252

pISSN - 1944-8244

DOI - 10.1021/am5050696

Subject(s) - materials science , electrochromism , tin oxide , composite number , nanostructure , chemical engineering , substrate (aquarium) , electrochromic devices , electrolyte , oxide , nanotechnology , nanoparticle , tin dioxide , doping , composite material , electrode , optoelectronics , metallurgy , chemistry , oceanography , geology , engineering

A composite material consisting of TiO2 nanotubes (NT) with WO3 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 TiO2 made from commercially available TiO2 nanoparticles creates an interface for the TiO2 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 WO3 concentration on the EC performance were studied. The composite WO3/TiO2 nanostructures showed higher ion storage capacity, better stability, enhanced EC contrast, and longer memory time compared with the pure WO3 and TiO2 materials.

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