Hydrogen/anion electrosorption at rhodized electrodes as revealed by electrochemical impedance spectroscopy

Kinetics of hydrogen underpotential deposition at ruthenium in acidic solutions

“…1. This circuit is simpler than that proposed earlier by Horvat-Radosevic and Kvastek [6]. Examples of the capacitance parameter T dl and the average apparent double layer capacitance, obtained in 0.1 M H 2 SO 4 , are displayed in Fig.…”

“…In general, on such metals two types of hydrogen exist, namely, H UPD, and overpotentially deposited hydrogen, H OPD; only the latter takes part in the hydrogen evolution reaction (HER). Although the thermodynamics of the H UPD was widely studied, the kinetics of the H UPD was investigated rarely [5][6][7][8][9].…”

“…Electrochemically and thermally oxidized Ru electrode was studied by Horvat-Radosevic and Kvastek [6] and complex impedance spectra involving two dispersed transmission line elements were found.…”

The kinetics of the electrochemical reduction of perchlorate ions on rhodium

“…In such studies it is tacitly assumed that ClO 4 − ions are stable under the actual experimental conditions, that is, no reduction of these ions takes place. However, evidence for the occurrence of the reduction process has been reported, e.g., for Rh [6][7][8][9][10][11], Pt [12][13][14][15], Wc [16], Al [17], Ti [18], Ir [19], Ru [20], Re [21], Tc [22] and Sn [23] electrodes. A survey of the literature can be found in reviews [4,24,15].…”

Time and potential resolved dissolution analysis of rhodium using a microelectrochemical flow cell coupled to an ICP-MS

“…The recent literature displays an increasing interest in the adsorption processes on rhodium electrodes [1,2], with particular focus on investigations by electrochemical quartz crystal microbalance (EQCM) [3][4][5][6][7]. This interest is fueled by the decisive impact of surface processes on the catalytic properties of electrode materials, with rhodium and rhodium alloys being highly relevant for various electrochemical reactions [8][9][10].…”