| 초록 |
The demands for sustainable energy continue to rise as fossil fuel reserves decline, urging people to discover alternatives to reduce their carbon footprint. Photoelectrochemical (PEC) solar water splitting is considered to be a promising alternative to produce clean H2 with high sustainability. The challenges remaining to achieve high efficiency solar water oxidation require the development of cost-effective and eco-friendly photoanode materials with enhanced PEC water oxidation performance by overcoming the typical sluggish oxygen evolution kinetics. Here, we demonstrate a nanocrystalline pyrophosphate regulated hybrid overlayer with metal phosphate for boosting solar water oxidation. By manipulating the facile electrochemical surface treatment followed by the phosphating process, nanocrystalline pyrophosphate is localized in the amorphous metal phosphate overlayer to form a heterogeneous structure. The metal phosphate-regulated overlayer shows significant enhanced PEC performance with long-term durability and the charge transfer efficiency. |
