Formation of nanocrystalline tetragonal oxide tungsten bronzes on platinum

A. V. Kosov; O. L. Semerikova; S. V. Vakarin; A. A. Pankratov; S. V. Plaksin; Yu. P. Zaykov

doi:10.1134/S0036029517020070

Formation of nanocrystalline tetragonal oxide tungsten bronzes on platinum

Authors: Kosov A.V.¹, Semerikova O.L.¹, Vakarin S.V.¹, Pankratov A.A.¹, Plaksin S.V.¹, Zaykov Y.P.¹
Affiliations:
1. Institute of High-Temperature Electrochemistry, Ural Branch
Issue: Vol 2017, No 2 (2017)
Pages: 158-162
Section: Article
URL: https://journals.rcsi.science/0036-0295/article/view/171304
DOI: https://doi.org/10.1134/S0036029517020070
ID: 171304

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Abstract

Cyclic voltammetry is used to study the formation of tetragonal oxide tungsten bronze of the composition K_xNa_yWO₃ 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_xNa_(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.