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Platinum electrodeposition from a dinitrosulfatoplatinate(II) electrolyte

 
: Weiser, Mathias; Schulze, Claudia; Schneider, Michael; Michaelis, Alexander

:

Applied surface science 390 (2016), S.333-338
ISSN: 0169-4332
Englisch
Zeitschriftenaufsatz
Fraunhofer IKTS ()
platinum; electrodeposition; nanoparticles; pulse plating

Abstract
In this work a halogen-free electrolyte to deposit platinum nanoparticle is studied. The investigated [Pt(NO2)2SO4]2−-complex is suitable for electrochemical deposition on halogen sensitive substrates. The mechanism and kinetic of particle deposition is investigated using a glassy carbon rotating disk electrode. Nano sized platinum particles are deposited by using pulse plating technique. The size of the smallest platinum nanoparticle is 5 nm. The shape of the particle distribution strictly depends on the plating time. The platinum deposition is usually superimposed with hydrogen evolution. A diffusion coefficient of the [Pt(NO2)2SO4]2‐-complex is determined to 5.4 × 10−6 cm2s−1. The current efficiency depends on the deposition parameters and amounts to 37% under the chosen pulse plating conditions.

: http://publica.fraunhofer.de/dokumente/N-411027.html