ABSTRACT
This chapter considers theoretical approaches to describe the behavior of electrochemically active, ion-permeable porous solids. Electroactive solids can be divided into insulating solids containing immobile redox-active centers, and solids where the entire porous material is electrochemically responsive. The electrochemistry is shown in the context of the electrochemical analysis of solids. The microporous material is attached to an inert electrode, forming the working electrode while the reference and auxiliary electrodes complete the usual three-electrode cell. The chapter also considers the case of a particle of microporous solid deposited on an inert electrode immersed into a suitable electrolyte. It assumes that the material is not a metallic conductor but incorporates immobile redox centers so that electron transport and ion transport are allowed through the solid via electron hopping between redox-active centers and ion diffusion across the micropores of the material.
