Temperature-modulated voltammetry

The dependences of thermoimpedance Z(phi) on overvoltage eta under the potentiostatic regime are calculated on the basis of the previously developed theory of thermoimpedance. The results are compared with the data obtained experimentally for the [Fe(CN)(6)](-3/-4) redox system. Voltammograms for Z(eta) at a constant overvoltage are calculated using the experimentally measured Z(phi) vs. eta curves and the corresponding dependences for the electrochemical admittance. The nature of the eta dependences of Z(phi) and Z(eta) is shown to depend significantly on the frequency of temperature modulation.