Abstract
Photoelectrochemical energy conversion and electron storage were investigated on hybrid film electrodes. Photoexcitation of was observed to undergo charge accumulation, i.e., double injection of electrons and protons into to form tungsten bronze by the oxidation of oxalic acid or methanol to form . It was clearly indicated that hybrid involving highly dispersed (an amorphous-like phase) exhibits more effective reversibility for photocharge-discharge processes than a hybrid involving a bulk polycrystalline . The energy band structure and phase changes of into tungsten bronze ( and ) by photocharge or electrocharge of the hybrid have also been characterized.
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