Differential-capacitance studies of silane-modified SnO2 electrodes at low modulation frequencies

N. R. Armstrong, V. R. Shepard

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


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 languageEnglish (US)
Pages (from-to)2965-2970
Number of pages6
JournalJournal of physical chemistry
Issue number20
StatePublished - Dec 1 1981

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry


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