| タイトル | Photoelectrolysis of water at high current density - Use of ultraviolet laser excitation |
| 著者（英） | Bocarsly, A. B.; Wrighton, M. S.; Bolts, J. M.; Cummins, P. G. |
| 著者所属（英） | Massachusetts Inst. of Tech. |
| 発行日 | 1977-11-01 |
| 言語 | eng |
| 内容記述 | The behavior of TiO2 and SrTiO3 photoanodes in cells for the photoelectrolysis of H2O has been investigated for high-intensity 351-,364-nm excitation from an Ar ion laser. Intensities up to 380 W/sq cm have been used. For TiO2 a small amount of surface decomposition is found after irradiation at high intensity, whereas SrTiO3 undergoes no detectable changes. Current-voltage properties for both electrodes are essentially independent of light intensity up to the level of 380 W/sq cm, and there is little if any change in quantum efficiency for electron flow. Photocurrent densities have been shown to exceed 5 A/sq cm for O2 evolution. Data show that the energy storage rate associated with the SrTiO3 photoelectrolysis can exceed 30 W/sq cm; this represents the highest demonstrated rate of sustained optical-to-chemical energy conversion. |
| NASA分類 | INORGANIC AND PHYSICAL CHEMISTRY |
| レポートNO | 78A11927 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/434939 |
