эквивалентная схема

The possibility of the use of impedance spectroscopy using an impulse method of step current change and recording voltage change in during time at the terminals of a cell with subsequent Fourier transform of the input signal and the response to it to assess the current state of Li-cell. It is proposed use of current pre-impulse in order to minimize the influence of passive film. It is substantiated an algorithm based on the measurements of impedance phase for determining of residual capacity.

The results of the study of kinetics of oxygen reduction on the dense LaLi_0.1Co_0.1Fe_0.8O_3-d electrode in (Li_0.62K_0.38)₂CO₃ eutectic melt using coulostatic technique are reported. It was found, that the equivalent circuit that includes heterogeneous charge transfer step in series with heterogeneous chemical reaction most closely fits the kinetics of electrode processes.