Download thickness of electrical double layer

thickness of electrical double layer
The length characterizing the decrease with distance of the potential in the
double layer = characteristic Debye length in the corresponding electrolyte
solution = κ−1:
1
1
= [εrε0RT ⁄ (F2∑ciz2i )] ⁄2
κ
i
(rationalized four-quantity system)
1
1
= [εrRT ⁄ (4πF2∑ciz2i )] ⁄2
κ
i
(three-quantity electrostatic system)
where ε = static permittivity = εrε0, εr = relative static permittivity of
solution; ε0 = permittivity of vacuum, R = gas constant, T = thermodynamic
temperature, F = Faraday constant , ci = concentration of species i, zi =
ionic charge on species i.
1972, 31, 619
IUPAC Compendium of Chemical Terminology
2nd Edition (1997)