Spatially resolved measurement of inhomogeneous electrocoloration/insertion in polycrystalline molybdenum oxide thin films via chronoabsorptometric imaging

Todd M. McEvoy, Keith J. Stevenson

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

A new integrated electrochemical and transmission optical microscopy approach is presented which allows for elucidation of inhomogeneous ion/charge-transfer behavior in polycrystalline electrochromic/insertion materials. Spatially resolved Li+ diffusion coefficients and ionic conductivities are determined from the time-lapsed optical density imaging response monitored during electrochemical potential-step perturbation. Non-uniform coloration changes and dispersed insertion kinetics are observed and associated with domain specific reactivity of polymorphous materials comprising α-MoO3 and β-MoO3.

Original languageEnglish
Pages (from-to)8438-8439
Number of pages2
JournalJournal of the American Chemical Society
Volume125
Issue number28
DOIs
Publication statusPublished - 16 Jul 2003
Externally publishedYes

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