| 초록 |
Photoelectrochemical (PEC) water splitting is an effective protocol to solve the current energy and environmental crises. Numerous studies have confirmed that it is feasible to use metal-based electrocatalysts for PEC water splitting. Among them, WO3 isn considered as a promising catalyst due to its suitable band gap. However, WO3 are thermodynamically unstable in the typically employed aqueous electrolytes, which limits its application. Here, we report a strategy to achieve pH-independent PEC water splitting and long-term stability on WO3 photoanode via decorating passivation layer. By decorating carbon-rich nickel complex passivation layer onto the surface of WO3, it will increased hydroxide ions coverage, thereby leads to faster decay of the positive surface charge in acidic environments, and weaken hydrogen ions adsorption in alkaline electrolytes, which enable high water oxidation performance and anticorrosive property independent of the pH value of the electrolyte. |
