โ Scribed by P.M.S. Monk; S.L. Chester
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of tungsten oxide have been formed by electrodeposition from solutions containing other transition metals. The electrolysis solution was prepared using hydrogen peroxide to dissolve the metallic tungsten. One other metal salt was added to this solution using cobalt, chromium, iron, molybdenum, nickel, ruthenium or zinc. Such multiple metal oxide films differ from pure WO, and exhibit different cyclic voltammograms, ac impedance behaviour and w-visible spectra.
The diffusion coet&ients of intercalating ions do not vary greatly with film composition. The resistances to charge transfer, measured using complex ac impedance, are affected dramatically by film composition.
๐ SIMILAR VOLUMES
Tungsten oxide films have been formed by poly-complex. The dip-coating solution was prepared by adding hydrogen peroxide to a tungsten acid solution which was obtained from ion exchange. Amorphous and crystalline films can be obtained at different firing temperature. Optical and electrochemical meas