| 초록 |
Photoelectrochemical water splitting is an attractive strategy to achieve a sustainable energy supply. For the hydrogen production, light harvesting, charge separation, charge transfer, and the stability of PEC cells should be well balanced. In this regard, cost-effective, stable, and earth abundant n-type metal oxides are studied widely for PEC water oxidation. However, the slow charge migration, electronic-state-mediated rapid trapping, and poor surface catalytic kinetics of metal oxides remain a significant obstacle for its use as a water oxidation catalyst. As a part of our effort to achieve simultaneously high light absorption, charge separation, and charge transfer efficiencies, divergent metal oxide photoanodes have been rationally designed to have efficient heterojunction structures. Our recent findings on strategies to improve the metal oxide electrodes based photochemical energy conversions will be introduced in this talk. |
