Coulometry on the voltammetric timescale: Microdisk potential-step chronoamperometry in aprotic solvents reliably measures the number of electrons transferred in an electrode process simultaneously with the diffusion coefficients of the electroactive species

Journal article

Microdisk, single potential-step chronoamperometry, is applied to a range of organic substrates in the aprotic solvents tetrahydrofuran, propylene carbonate, acetonitrile and the room temperature ionic liquid [C 4dmim][N(Tf)2]. Fitting of the chronoamperometric transients was achieved using the Shoup and Szabo method [3]. Accurate values for the diffusion coefficients, D, and the number of electron(s) transferred, n, in the electrode process have been simultaneously and consistently obtained....

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Authors: Paddon, C; Silvester, D; Bhatti, F; Donohoe, T; Compton, R

• Publication status: Published
• Journal: ELECTROANALYSIS
• Volume: 19
• Issue: 1
• Pages: 11-22
• Publication date: 2007-01-01
• DOI: 10.1002/elan.200603667
• EISSN: 1521-4109
• ISSN: 1040-0397
• Language: English
• Keywords: ionic liquids; aprotic solvents; diffusion coefficients; single step-potential chronoamperometry; microdisk