Expanding proton-insertion coupled electron transfer into tungsten oxides to non-aqueous organic acid electrolytes

Saeed Saeed; Zhou Lu; Ellen M. Matson; Veronica Augustyn

doi:10.1039/D5CC04875C

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Expanding proton-insertion coupled electron transfer into tungsten oxides to non-aqueous organic acid electrolytes

Saeed Saeed,

^a Zhou Lu,

^b Ellen M. Matson

^b and Veronica Augustyn

*^a

Author affiliations

* Corresponding authors

^a Department of Materials Science and Engineering, NC State University, Raleigh, NC 27606, USA
E-mail: vaugust@ncsu.edu

^b Department of Chemistry, University of Rochester, Rochester, NY 14627, USA

Abstract

We investigated proton insertion-coupled electron transfer (PICET) into tungsten oxide films using non-aqueous organic acid electrolytes. Operando UV-vis-NIR spectroelectrochemistry confirms PICET, showing respective broadband and dual-band transmittance changes for WO₃ and WO₃·H₂O in the visible and NIR regions. WO₃·H₂O retains facile PICET kinetics in the absence of water.

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DOI: https://doi.org/10.1039/D5CC04875C
Article type: Communication
Submitted: 24 Aug 2025
Accepted: 15 Oct 2025
First published: 24 Oct 2025
This article is Open Access

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Chem. Commun., 2025, Advance Article

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Expanding proton-insertion coupled electron transfer into tungsten oxides to non-aqueous organic acid electrolytes

S. Saeed, Z. Lu, E. M. Matson and V. Augustyn, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC04875C

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Expanding proton-insertion coupled electron transfer into tungsten oxides to non-aqueous organic acid electrolytes

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Expanding proton-insertion coupled electron transfer into tungsten oxides to non-aqueous organic acid electrolytes

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