Effect of Large-Amplitude Alternating Current Modulation on Apparent Reversibility of Electrode Processes

2010 ◽  
Vol 82 (19) ◽  
pp. 8137-8145 ◽  
Author(s):  
Andrzej S. Baranski ◽  
Aliaksei Boika
Keyword(s):  
Large Amplitude ◽  
Alternating Current ◽  
Current Modulation ◽  
Electrode Processes

scholarly journals Alternating Current Polarography and Electrode Processes

1963 ◽  
Vol 11 (1-2) ◽  
pp. 50-57 ◽  
Author(s):  
B. BREYER ◽  
T. BIEGLER ◽  
H. H. BAUER
Keyword(s):  
Alternating Current ◽  
Electrode Processes

The Alternating Current Electrode Processes

1979 ◽  
Vol 18 (1-2) ◽  
pp. 56-64 ◽  
Author(s):  
S. Venkatesh ◽  
Der-Tau Chin
Keyword(s):  
Alternating Current ◽  
Current Electrode ◽  
Electrode Processes

Attributes of Direct Current Aperiodic and Alternating Current Harmonic Components Derived From Large Amplitude Fourier Transformed Voltammetry Under Microfluidic Control in a Channel Electrode

2012 ◽  
Vol 84 (15) ◽  
pp. 6686-6692 ◽  
Author(s):  
Sinéad M. Matthews ◽  
Muhammad J. A. Shiddiky ◽  
Kamran Yunus ◽  
Darrell M. Elton ◽  
Noel W. Duffy ◽  
...  
Keyword(s):  
Direct Current ◽  
Large Amplitude ◽  
Alternating Current ◽  
Current Harmonic ◽  
Harmonic Components ◽  
Channel Electrode

scholarly journals The polarization of zinc electrodes in neutral and acid solutions of zinc salts by direct and alternating currents.—Part. I

1926 ◽  
Vol 112 (760) ◽  
pp. 259-279 ◽  
Keyword(s):  
Zinc Sulphate ◽  
Free Acid ◽  
Preceding Paper ◽  
Alternating Current ◽  
Zinc Salt ◽  
Factors Affecting ◽  
Electrode Processes ◽  
Zinc Salts ◽  
Current Densities ◽  
Zinc Sulphate Solution

In the preceding paper it was shown that an amalgamated Line electrode made anode in an anode zinc sulphate solution undergoes considerable polarisation, and that tins polarisation can be more than overcome by the superposition of a sufficiently large alternating current of high frequency. Further, Allmand and Puri mention experiments in which a cathode of amalgamated zine had superposed on it alternating currents of intensities up to 200 times that of the direct current, and of frequencies varying between 20 and 400, the effect being to increase the polarisation of the electrode, which became more negative. These results were not to be anticipated from previous work, and it seemed that a closer investigation of the whole subject might not only explain the facts referred to, but perhaps throw fresh light on the mechanism of the electrode processes involved. As possible factors affecting the phenomena could be considered the amalgamation or otherwise of the zinc electrode, the presence or absence of free acid in the solution, the nature of the zinc salt ( e. g. , whether sulphate or chloride), duration of electrolysis, temperature, the absolute and relative values of the direct and alternating current densities, and tbs frequency of the alternating currents. The present paper contains an investigation of some of these points, working at room temperature and with zinc sulphate solutions, potential measurements have been made with amalgamated zinc electrodes in absence and in presence of free H 2 SO 4 , and with unamalgamated electrodes in neutral solution. Alternating currents and compound currents have been used, and a few experiments made with direct currents, frequencies varying between 50 and 11,000 have been worked with.

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