| 초록 |
The development of highly efficient, cost-effective and environmental friendly materials is a crucial element for sustainable and renewable energy implementation. Especially, for solar water splitting that stores sunlight directly in the form of chemical bonds by splitting of water, design and synthesis of semiconductors and/or electrocatalysts is central to the performance. We seek to develop new, integrated solar water splitting systems based exclusively on earth-abundant elements and nanomaterials in pursuit of low-cost and scalable production. In this presentation, I will present a new, scalable and versatile sol-flame method which is based on the combination of solution chemistry and high-temperature flame process, enabling not only to synthesize various types of hybrid nanomaterials with a great functionality but also to improve the solar water-splitting performance. The sol-flame process first coats existing nanomaterials with nanoparticle or dopant precursors prepared by the sol-gel process, and then dissociates/oxidizes these precursors in flame. The sol-flame method uniquely combines the merits of the sol-gel method (e.g., broad material choices and excellent chemical composition control) with the flame process (e.g., high temperature and fast heating/cooling rate). Besides, I will also present our recent developments on novel oxides based photoelectrode materials. |
