Electrophoretic deposition (EPD) of ground electrospun WO3 nanofibers was applied to create
photoanodes with controlled morphology for the application of photoelectrochemical (PEC)
water splitting. The correlations between deposition parameters and film thicknesses were
investigated with theoretical models to precisely control the morphology of the nanostructured
porous thin film. The photoconversion efficiency was further optimized as a function of film
thickness. A maximum photoconversion efficiency of 0.924% from electrospun WO3
nanofibers EPD deposited on a substrate was achieved at a film thickness of 18 μm.