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Expanding proton-insertion coupled electron transfer into tungsten oxides to non-aqueous organic acid electrolytes
Saeed Saeed1, Zhou Lu2, Ellen M Matson2
1Department of Materials Science and Engineering, NC State University, Raleigh, NC 27606, USA. vaugust@ncsu.edu.
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.

