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

Neal R Armstrong, V. R. Shepard

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

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
Volume85
Issue number20
StatePublished - 1981

Fingerprint

Silanes
Frequency modulation
silanes
frequency modulation
Capacitance
capacitance
Electrodes
electrodes
Surface states
Electric space charge
Amines
space charge
surface layers
amines
Gels
gels

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Differential-capacitance studies of silane-modified SnO2 electrodes at low modulation frequencies. / Armstrong, Neal R; Shepard, V. R.

In: Journal of Physical Chemistry, Vol. 85, No. 20, 1981, p. 2965-2970.

Research output: Contribution to journalArticle

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