Abstract
Reductive energy generated by using photocatalysts under UV light can be stored in coupled energy storage materials, and the stored energy can be used in dark. TiO2 and SrTiO3 are used as photocatalysts and WO3 and MoO3 as energy storage materials. The energy storage is possible not only in electrolytes but also in non-electrolytic media including pure water and humid air. The mechanism of the energy storage by photocatalysts and charge-discharge behavior are discussed as well as their applications. Energy storage photocatalysts retain their anti-corrosion effect and anti-bacterial effect even after the UV light is turned off.
