Abstract

Cyclic voltammetry is used to study the formation of tetragonal oxide tungsten bronze of the composition K x Na y WO3 on a Pt(110) substrate during electrodeposition from a K2WO4–Na2WO4–WO3 melt. The potential ranges in which cathode products of various compositions and morphologies form are found. K x Na(0.66–x)WO3 crystals are shown to form according to the nucleation/growth mechanism. A general scheme is proposed and used to write equations for cathode reactions.

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