Electrode impedance measurements at short times by a square-wave technique

✍ Scribed by C.K. Dyer; J.S.L. Leach

• Publisher: Elsevier Science
• Year: 1974
• Tongue: English
• Weight: 483 KB
• Volume: 19
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(74)80012-5

✦ Synopsis

The impedance characteristics of an electrode/electrolyte interface have been measured down to times as short a~ 10. ' s.

Using a repeating-square-wave technique, the solution resistance can be eliminated from the measured impedance and, where the electrode response is best represented by a number of parallel RC circuits in series. the R and c' components of such circuits can be detcrmincd unambiguously.

In its present form when used at short times (< 1 11s) the technique requires a sampling oscilloscope and the use of small electrodes in highly conductive solutions. The experimental technique. theol-y and implications arc presented.