TY - JOUR
T1 - Does electrical double layer formation lead to salt exclusion or to uptake?
AU - Lyklema, J.
PY - 2005
Y1 - 2005
N2 - When electric double layers are formed, cases have been reported where this formation nvolves expulsion of electrolyte into the solution and cases in which electrolyte is absorbed from the solution. Both situations are experimentally and theoretically documented, but they cannot be simultaneously correct. In this paper it is shown that this seeming conflict finds its cause in the way the double layer is formed: expulsion for double layers forming spontaneously by ion adsorption from the solution, but uptake when the double layer is formed by an external field. A thermodynamic analysis is presented.
AB - When electric double layers are formed, cases have been reported where this formation nvolves expulsion of electrolyte into the solution and cases in which electrolyte is absorbed from the solution. Both situations are experimentally and theoretically documented, but they cannot be simultaneously correct. In this paper it is shown that this seeming conflict finds its cause in the way the double layer is formed: expulsion for double layers forming spontaneously by ion adsorption from the solution, but uptake when the double layer is formed by an external field. A thermodynamic analysis is presented.
U2 - 10.1103/PhysRevE.71.032501
DO - 10.1103/PhysRevE.71.032501
M3 - Article
SN - 1539-3755
VL - 71
SP - 032501/1-032501/3
JO - Physical Review. E, Statistical nonlinear, and soft matter physics
JF - Physical Review. E, Statistical nonlinear, and soft matter physics
ER -