Porous electrode geometry transfer

The behavior of porous electrodes depends on the details of their geometry, which is frequently represented by penetration depth Xp of the AC current in the pore and the ratio /Ap. A penetration depth Xp of the signal can be defined as a square root of the ratio of interfacial impeidance for a flat electrode (Eq. 7-67) to the resistance of a pore (Eq. 7-65). For a simple interfadal impedance case without charge transfer, as presented in Eq. 7-68, the penetration depth becomes inversely proportional to the square root of frequency co and directly proportional to the square root of the radius of the pores r and solution conductivity o ... 

---