thickness of electrical double layer

https://doi.org/10.1351/goldbook.T06343
The length characterizing the decrease with distance of the potential in the double layer = characteristic
Debye
length in the corresponding electrolyte solution = κ1:
1κ=εrε0RTF2icizi2
(rationalized four-quantity system)
1κ=εrRT4πF2icizi2
(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
, zi = concentration of species i, zi = ionic charge on species i.
Source:
PAC, 1972, 31, 577. (Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry) on page 619 [Terms] [Paper]