| Budget Amount *help |
¥26,780,000 (Direct Cost: ¥20,600,000、Indirect Cost: ¥6,180,000)
Fiscal Year 2014: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2013: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2012: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Fiscal Year 2011: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
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| Outline of Final Research Achievements |
Photoelectrochemical water splitting is a promising technology for hydrogen production using solar energy without exhausting CO2. However, the design concepts for photoelectrodes with high quantum efficiency have not been clarified even in the case of conventional metal oxides such as TiO2 and WO3. In this study, we investigated the effect of internal resistance, carrier densities, and the rate constants of photoexcited carriers of TiO2 and WO3 electrodes on their photocatalytic and photoelectrochemical activities using the techniques to measure frequency response, electrochemical impedance spectroscopy and intensity modulated photocurrent spectroscopy (IMPS).
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