| Autor: |
Donald E. Smith, Richard J. Schwall, Alan M. Bond |
| Rok vydání: |
1977 |
| Předmět: |
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| Zdroj: |
Journal of Electroanalytical Chemistry and Interfacial Electrochemistry. 85:231-247 |
| ISSN: |
0022-0728 |
| DOI: |
10.1016/s0022-0728(77)80290-8 |
| Popis: |
A measurement approach is described and data are presented which demonstrate the ability to effect a.c. cyclic voltammetric measurements with the on-line digital FFT approach to faradaic admittance data acquisition. The equipment utilized enables complete faradaic admittance spectra to be obtained at an effective spectrum acquisition rate of 10 s−1, so that the d.c. potential range encompassed by a typical cyclic wave can be encompassed with adequate resolution in the Edc dimension in ≥6 s, approximately. The instrument features dynamic, computerized measurement and compensation of the non-faradaic ohmic resistance and double-layer capacitance contributions to the acquired total cell admittance. Measurements with quasi-reversible systems yield the expected faradaic admittance and phase angle responses over a quite generous bandwidth. Applications to mercury and platinum electrodes are illustrated. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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