Differential-capacitance studies, at low modulation frequencies, were conducted on a variety of silane-modified SnO2 electrodes. Silanes with amine functionality, when added to the SnO2 surface, perturb the ionic population of the gel-like surface layer. This phenomenon and the nonideal capacitance behavior observed for SnO2 electrodes at low modulation frequencies can be explained by the presence of a surface-state capacitance term in parallel with the normal space-charge capacitance.
|Original language||English (US)|
|Number of pages||6|
|Journal||Journal of physical chemistry|
|State||Published - Dec 1 1981|
ASJC Scopus subject areas
- Physical and Theoretical Chemistry