Abstract
Herein, we design a flexible, photocatalytic fuel cell (fPFC) that utilizes light irradiation to provide electrical power via the decomposition of organic compounds (lactic acid, ethanol, methanol, urea, glycerol, and glucose). Photocurrent measurements, polarization curves, and electrochemical impedance spectroscopy are used to characterize the fPFCs and analyze their performance. The fPFC is shown to provide power under both flat and bending (r = 3 cm) conditions. Lastly, the fPFC is employed as a power generation device in two applications: in wastewater treatment and in a sweat band using methylene blue and human sweat as fuel sources, respectively.