A solid-state transparent photocapacitor has been prepared for the first time by the use of two transparent electrodes (TiO2 and LiFeO2) and also a transparent ion gel-based electrolyte between them, reaching a transmittance of 57% at k = 555 nm, a specific capacitance of 2.98 lFcm2 and a specific energy of 0.54 lJcm2.
