Ultrafast chronoamperometry of acoustically agitated solid particulate suspensions: Nonfaradaic and faradaic processes at a polycrystalline gold electrode

Article Abstract:

Nanosecond electrochemistry is used to investigate the impacts of various solid particles (alumina and graphite suspended in aqueous perchloric acid and copper suspended in aqueous sodium perchlorate) at a polycrystalline gold electrode under insonation. Current spikes of microsecond duration, attributed to individual impacts, are observed under potentiostatic conditions, with a polarity that inverts at the potential of zero charge of the electrode/electrolyte system.

Product information, Testing, Electrodes, Properties

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Computational electrochemistry: Finite element simulation of a disk electrode with ultrasonic acoustic streaming

Article Abstract:

Computer simulations using the finite element method are used to predict the correlation between the transport limiting current [I(sub lim)] and parameters such as diffusion coefficient, source to electrode separation, source power, and medium viscosity for a sonicated disk electrode in 'face on' mode. By systematically changing the simulation parameters and geometry, empirical relationships were predicted between I(sub lim) and key parameters.

Usage, Ultrasonic waves, Computer simulation, Computer-generated environments, Ultrasound

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Edge plane sites on highly ordered pyrolytic graphite as templates for making palladium nanowires via electrochemical decoration

Article Abstract:

A method for the fabrication of metal nanowires is described. The advantage of this electrochemical decoration method is that it has allowed metal nanowires to be fabricated without the simultaneous formation of nanoparticles on the basal plane terraces.

Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Palladium, Methods, Electrochemical analysis, Graphite, Chemical properties

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