The relation between coloring and bleaching with hydrogen in tungsten oxide-based electrochromic devices: Step current analysis

M. Denesuk, J. P. Cronin, S. R. Kennedy, Donald R Uhlmann

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The relationshin between hydrogen intercalation and deintercalation (coloring and bleaching) in an aqueous tungsten oxide-based electrochromic device is presented. The built-in potential and optical transmission of the device are measured under step-current conditions; both display a hysteresis which can be explained by a two-phase model in which intercalation occurs as the parallel, equipotential filling of the two phases, but where a deintercalation barrier associated with one of the phases imposes an asymmetry. The observed data are well explained by a corresponding equivalent circuit which allows for the prediction of deintercalation behavior from intercalation behavior with a single adjustable parameter, which represents the barrier to deintercalation.

Original languageEnglish (US)
Pages (from-to)2154-2158
Number of pages5
JournalJournal of the Electrochemical Society
Volume144
Issue number6
StatePublished - Jun 1997

Fingerprint

Electrochromic devices
tungsten oxides
bleaching
Coloring
Intercalation
Bleaching
intercalation
Tungsten
Hydrogen
Oxides
hydrogen
equipotentials
Light transmission
equivalent circuits
Equivalent circuits
Hysteresis
hysteresis
asymmetry
predictions
tungsten oxide

ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

The relation between coloring and bleaching with hydrogen in tungsten oxide-based electrochromic devices : Step current analysis. / Denesuk, M.; Cronin, J. P.; Kennedy, S. R.; Uhlmann, Donald R.

In: Journal of the Electrochemical Society, Vol. 144, No. 6, 06.1997, p. 2154-2158.

Research output: Contribution to journalArticle

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