Photoelectrochemical properties of spinel Li1-xMn2O4 (0 < x < 1) thin
film on ITO electrodes were studied in propylenecarbonate (PC) contain
ing 1 M LiClO4. Cathodic photocurrents were clearly observed, suggesti
ng the occurrence of photo-assisted lithium insertion reaction at the
Li1-xMn2O4 film electrode.