Current interruption ― instrumentation and applications

Describes an electronic circuit for periodic interruption of current to a cell with simultaneous observation of closed-circuit and open-circuit electrode potentials. The open-circuit potential may be observed at interruption times ranging from 2.0 microns to 2.0s or longer. The duty cycle of the cel...

Full description

Saved in:
Bibliographic Details
Published inJournal of the Electrochemical Society Vol. 134; no. 3; pp. 539 - 546
Main Authors WRUCK, W. J, MACHADO, R. M, CHAPMAN, T. W
Format Journal Article
LanguageEnglish
Published Pennington, NJ Electrochemical Society 01.03.1987
Subjects
Chemistry
Electrochemistry
Exact sciences and technology
General and physical chemistry
Polarization
Interruption
Stationary state
Rotating disk electrode
Use
Electrochemical cell
Instrumentation
Electronic circuit
Cyclic method
Mass transfer
Investigation method
Numerical data
Electrodiffusion
Electrochemical reaction
Electric current
Periodic system
Online AccessGet full text

Cover

More Information
Summary:Describes an electronic circuit for periodic interruption of current to a cell with simultaneous observation of closed-circuit and open-circuit electrode potentials. The open-circuit potential may be observed at interruption times ranging from 2.0 microns to 2.0s or longer. The duty cycle of the cell may be adjusted between 40 and 99.93%. Application of the circuit to observe relaxation of polarization is demonstrated with simple electrical test circuits, with commercial dry cells, and with a mass-transfer controlled rotating disk electrode. The latter example shows that interruption can provide not only resistance measurements but also estimates of mass-transfer parameters.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0013-4651
1945-7111
DOI:10.1149/1.2100506