Non-uniform accessibility and the use of hydrodynamic electrodes for mechanistic studies: A comparison of wall-jet and rotating disc electrodes

1991 ◽  
Vol 21 (4) ◽  
pp. 295-300 ◽  
Author(s):  
R. G. Compton ◽  
A. C. Fisher ◽  
G. P. Tyley
Keyword(s):  
Wall Jet ◽  
Mechanistic Studies ◽  
Rotating Disc ◽  
Disc Electrodes

scholarly journals Development of Electrodeposition System Employing 8 Rotating Disc Electrodes for Highly Reproducible Synthesis of Zinc Oxide Thin Films

2012 ◽  
Vol 80 (11) ◽  
pp. 891-897 ◽  
Author(s):  
Takeshi YANE ◽  
Akira KOYAMA ◽  
Kenta HIRAMATSU ◽  
Yoshitaka ISOGAI ◽  
Keigo ICHINOSE ◽  
...  
Keyword(s):  
Thin Films ◽  
Zinc Oxide ◽  
Oxide Thin Films ◽  
Rotating Disc ◽  
Disc Electrodes

scholarly journals Influence of Nanocrystalline Palladium Morphology on Alkaline Oxygen Reduction Kinetics

Catalysts ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 566 ◽  
Author(s):  
Eliran Hamo ◽  
Avichay Raviv ◽  
Brian A. Rosen
Keyword(s):  
Oxygen Reduction ◽  
High Surface ◽  
Reduction Reaction ◽  
Membrane Electrode ◽  
X Ray Diffraction ◽  
Rotating Disc ◽  
Force Microscopy ◽  
Atomic Force ◽  
Orr Kinetics ◽  
Disc Electrodes

The structure sensitivity of the alkaline oxygen reduction reaction (ORR) on palladium is of great interest as cost considerations drive the need to find a replacement for platinum catalysts. The kinetics of alkaline ORR were investigated on nanocrystalline palladium (Pd) films with domain sizes between 14 and 30 nm that were synthesized by electrodeposition from aqueous electrolytes. Ten Pd films were prepared under varying electrodeposition parameters leading to each having a unique texture and morphology. The sensitivity of initial alkaline ORR kinetics to the Pd surface structure was evaluated by measuring the kinetic current density and number of electrons transferred for each film. We show through scanning electron microscopy (SEM), x-ray diffraction (XRD), atomic force microscopy (AFM), and voltammetry from rotating disc electrodes (RDEs) that the fastest alkaline ORR kinetics are found on Pd surfaces with high surface roughness, which themselves are composed of fine grains. Such a study is useful for developing membrane electrode assemblies (MEAs) based on directly electrodepositing catalyst onto a conductive diffusion layer.

Rotating disc electrodes: the theory of chronoamperometry and its use in mechanistic investigations

1988 ◽  
Vol 418 (1854) ◽  
pp. 113-154 ◽  
Keyword(s):  
Diffusion Coefficients ◽  
Reaction Mechanisms ◽  
Electrode Reaction ◽  
Rotating Disc ◽  
Potential Step ◽  
Wide Range ◽  
Mechanistic Investigations ◽  
Disc Electrodes ◽  
Theoretical Results ◽  
Computational Strategy

A general computational strategy is presented for the calculation of the chronoamperometric responses arising from potential-step experiments at rotating disc electrodes. The method is applicable to a wide range of electrode reaction mechanisms and theoretical results are given for single- and double-potential-step experiments for ECE, DISP1, DISP2, EC' and CE reactions. For the last, the treatment is extended to cover the case where reactants have grossly unequal diffusion coefficients. Steadystate behaviour is also deduced. The extent to which the various mechanistic pathways can be distinguished is identified and the necessary experiments defined.

Rotating-disc electrodes. ECE and DISP1 processes

1987 ◽  
Vol 83 (4) ◽  
pp. 1261 ◽  
Author(s):  
Richard G. Compton ◽  
Richard G. Harland ◽  
Patrick R. Unwin ◽  
Andrew M. Waller
Keyword(s):  
Rotating Disc ◽  
Disc Electrodes
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