Indium Sulfide Based Photoelectrodes for All-Vanadium Photoelectrochemical Redox Flow Batteries
Altaf, Cigdem Tuc
Sankir, Nurdan Demirci
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The utilization of indium sulfide (In2S3) photo-electrodes in an all-vanadium photoelectrochemical redox flow battery system has been investigated. The In2S3-based photo-electrodes have been prepared via the ultrasonic spray pyrolysis (USP) method. The thickness of the In2S3 photoelectrodes has been altered via increasing the pass number of the USP nozzle from 25 to 75 passes. Each pass delivers 6 mu L.cm(-2) of the precursor solution. Within the scope of the photoelectrochemical oxidation on the In2S3, the vanadium couples of VO2+/V3+ have been proven to be promising redox species. The maximum charge separation and quantum efficiencies of 46% and 20% have been calculated, respectively.