Composition and electrocatalytic properties of the coatings formed by the ion-beam-assisted deposition of platinum from a pulsed arc-discharge plasma onto aluminum
Abstract:
The structure, composition, and electrocatalytic properties of the coatings formed on aluminum by ion-beam-assisted deposition of platinum from the plasma of a pulsed arc discharge under conditions where deposited-metal ions are used as deposition-assisting ions are studied. The coating thickness reaches $\sim$30 nm, and the near-surface content of platinum atoms in the coatings is $\sim$2.6 $\times$ 10$^{16}$ cm$^{-2}$. The electrocatalytic activities of aluminum-based electrodes with the coatings in the reactions of electrochemical oxidation of methanol and ethanol, which form the basis for the principle of operation of low-temperature fuel cells (considered as promising chemical sources of an electric current), are significantly higher than the activity of a platinum electrode.
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