Issue 42, 2014

Three-colored electrochromic lithiated vanadium oxides: the role of surface superoxides in the electro-generation of the red state

Abstract

Lithiated vanadium oxides with polyelectrochromic behaviour are reported here for the first time. Electrochrome was obtained by means of a simple and solvent-free solid state reaction. Clear XPS evidence indicates that the electro-generation of the red color is due to the dismutation of surface-adsorbed O2 species with subsequent formation of red colored V5+–O22− complexes. The reaction is switched electrochemically by oxidation of the surface V4+ centers.

Graphical abstract: Three-colored electrochromic lithiated vanadium oxides: the role of surface superoxides in the electro-generation of the red state

Supplementary files

Article information

Article type
Communication
Submitted
29 May 2014
Accepted
12 Sep 2014
First published
12 Sep 2014

J. Mater. Chem. C, 2014,2, 8854-8857

Author version available

Three-colored electrochromic lithiated vanadium oxides: the role of surface superoxides in the electro-generation of the red state

S. Zanarini, F. Di Lupo, A. Bedini, S. Vankova, N. Garino, C. Francia and S. Bodoardo, J. Mater. Chem. C, 2014, 2, 8854 DOI: 10.1039/C4TC01123F

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