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Surface preparation of planar lead electrodes for electrochemical studies in sulphuric acid solutions

โœ Scribed by K. Murugan; P.G. Balakrishnan; P.V. Vasudeva Rao

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
386 KB
Volume
34
Category
Article
ISSN
0378-7753

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โœฆ Synopsis

There are wide discrepancies in the reported current density values (ti p and i0,~) obtained from potentiodynamic studies on lead in sulphuric acid solutions . Furthermore, it is well known that preparative procedures exert a marked influence on the data obtained for planar electrodes. The present investigation confirms a variation in current density values with different methods of polishing and the effect of subsequent cycling . From analysis of the results, a well-defined procedure is derived to produce an electrode with a constantresponse-modified-surface (CRMS) . This yields current densities that vary by only ยฑ2% .

Scanning electron micrographs of the treated electrodes provide additional evidence in support of a CRMS .

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