Voltammetry Under High Mass Transport Conditions. The High Speed Channel Electrode and Heterogeneous Kinetics

1995 ◽  
Vol 99 (40) ◽  
pp. 14813-14818 ◽  
Author(s):  
Neil V. Rees ◽  
John A. Alden ◽  
Robert A. W. Dryfe ◽  
Barry A. Coles ◽  
Richard G. Compton
Keyword(s):  
Mass Transport ◽  
High Speed ◽  
High Mass ◽  
Heterogeneous Kinetics ◽  
Channel Electrode

Voltammetry under High Mass Transport Conditions. The High-Speed Channel Electrode and Transient Measurements

1997 ◽  
Vol 101 (28) ◽  
pp. 5540-5544 ◽  
Author(s):  
Francisco Prieto ◽  
W. Joanne Aixill ◽  
John A. Alden ◽  
Barry A. Coles ◽  
Richard G. Compton
Keyword(s):  
Mass Transport ◽  
High Speed ◽  
High Mass ◽  
Channel Electrode ◽  
Transient Measurements

Voltammetry under High Mass Transport Conditions. A High Speed Channel Electrode for the Study of Ultrafast Kinetics

1995 ◽  
Vol 99 (18) ◽  
pp. 7096-7101 ◽  
Author(s):  
Neil V. Rees ◽  
Robert A. W. Dryfe ◽  
Jonathan A. Cooper ◽  
Barry A. Coles ◽  
Richard G. Compton ◽  
...  
Keyword(s):  
Mass Transport ◽  
High Speed ◽  
High Mass ◽  
Channel Electrode

Voltammetry under high mass transport conditions. The application of the high speed channel electrode to the reduction of pentafluoronitrobenzene

1996 ◽  
Vol 411 (1-2) ◽  
pp. 121-127 ◽  
Author(s):  
Barry A. Coles ◽  
Robert A.W. Dryfe ◽  
Neil V. Rees ◽  
Richard G. Compton ◽  
Stephen G. Davies ◽  
...  
Keyword(s):  
Mass Transport ◽  
High Speed ◽  
High Mass ◽  
Channel Electrode

The high speed channel electrode applied to heterogeneous kinetics: the oxidation of 1,4-phenylenediamines and related species in acetonitrile

2002 ◽  
Vol 534 (2) ◽  
pp. 151-161 ◽  
Author(s):  
Neil V. Rees ◽  
Oleksiy V. Klymenko ◽  
Barry A. Coles ◽  
Richard G. Compton
Keyword(s):  
Related Species ◽  
High Speed ◽  
Heterogeneous Kinetics ◽  
Channel Electrode

Ohmic distortion of mass transport and of current-voltage curves at a channel electrode

1996 ◽  
Vol 8 (10) ◽  
pp. 913-917 ◽  
Author(s):  
Barry A. Cales ◽  
Richard G. Compton ◽  
Jane P. Larsen ◽  
R. Anthony Spackman
Keyword(s):  
Mass Transport ◽  
Current Voltage ◽  
Channel Electrode

The oxygen reduction reaction at the three-phase boundary: nanoelectrodes modified with Ag nanoclusters

2016 ◽  
Vol 193 ◽  
pp. 241-250 ◽  
Author(s):  
Jan Clausmeyer ◽  
Alexander Botz ◽  
Denis Öhl ◽  
Wolfgang Schuhmann
Keyword(s):  
Mass Transport ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Local Delivery ◽  
Model Systems ◽  
Alkaline Media ◽  
High Mass ◽  
Slow Diffusion ◽  
Ag Nanoclusters

Silver nanoclusters are deposited on bifunctional Θ-shaped nanoelectrodes consisting of a carbon nanoelectrode combined with a hollow nanopipette. The Θ-nanoelectrodes are used as model systems to study interfacial mass transport in gas diffusion electrodes and in particular oxygen-depolarized cathodes (ODC) for the oxygen reduction reaction (ORR) in chlor-alkali electrolysers. By local delivery of O2 gas to the electroactive Ag nanoclusters through the adjacent nanopipette, enhanced currents for the ORR at the Ag nanoparticles are recorded which are not accountable when considering the low solubility and slow diffusion of O2 in highly alkaline media. Instead, local oversaturation of O2 leads to current enhancement at the Ag nanoclusters. Due to the intrinsic high mass transport rates at the nanometric electrodes accompanied by local delivery of reactants, the method generally allows to study electrochemical reactions at single nanoparticles beyond the limitations induced by slow diffusion and low reactant concentration. Kinetic and mechanistic information, for instance derived from Tafel slopes, can be obtained from kinetic regimes not accessible to standard techniques.

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