The influence of early stages of PbO2 nucleation on its phase composition | Zendy

O. Shmychkova | Zendy; T. V. Luk’yanenko | Zendy; A. Velichenko | Zendy

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The influence of early stages of PbO2 nucleation on its phase composition

Author(s) -

O. Shmychkova,

T. V. Luk’yanenko,

A. Velichenko

Publication year - 2016

Publication title -

chemistry of metals and alloys

Language(s) - English

Resource type - Journals

eISSN - 1998-8087

pISSN - 1998-8079

DOI - 10.30970/cma9.0336

Subject(s) - nucleation , electrolyte , phase (matter) , oxide , materials science , crystal habit , deposition (geology) , crystal (programming language) , crystal growth , inorganic chemistry , chemical engineering , chemistry , crystallization , crystallography , metallurgy , organic chemistry , electrode , paleontology , sediment , biology , programming language , engineering , computer science

During the electrodeposition of lead(IV) oxide the simultaneous formation of two phases (αand β-phase) may occur. Film electrodeposition begins with the formation of α-phase, and then the formation of β-phase or simultaneous two-phase deposition takes place. The nucleation of PbO2 occurs through a progressive mechanism both in methanesulfonate and nitrate electrolytes. However, the preferred form of crystals in the case of methanesulfonate electrolyte is the cylinder, and in the nitrate electrolyte the crystal formation occurs in the form of cones. The character and kinetic parameters of 2D nucleation of lead(IV) oxide crystals allow predicting the phase composition of the coatings.

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