Feasibility of Dual-Perturbation Electrochemical Impedance, Employing Simultaneous Chemical and Electrochemical Perturbations

Abstract

An expansion of existing electrochemical impedance techniques to include both electrically and chemically driven perturbations is proposed. The advantage of this technique, called Dual-Perturbation EIS, is due to the dual perturbations originating at different interfaces, which can be used to yield additional insights into solid oxide fuel cell behavior. The feasibility of a Dual-Perturbation EIS measurement is established by design and fabrication of a prototype system, which yields measurable perturbation interaction terms in the Fourier Transformed response.