Monash “artificial photosynthesis” system achieves in excess of 22% efficiency for production of hydrogen from water
A team at Monash University (Australia) has developed an “artificial photosynthesis” system that delivers the highest efficiency reported to date—in excess of 22%—for the solar-driven conversion of water to hydrogen. A paper on the researchers’s work is published in the RSC journal Energy & Environmental Science.
Although some solar-driven fuel generating systems have reached efficiencies as high as 18%, they are often based on precious metal catalysts, or offer only limited stability. We describe here a system that utilises concentrated solar power, which is inexpensive to produce, and an electrolyser module based on Earth-abundant materials capable of operating under benign conditions.—Spiccia et al.
The electrolyser functions in electrolytes with pH values ranging from neutral to alkaline, including river water, allowing implementation in a variety of geographic locations.
Leone Spiccia, Shannon Bonke, Mathias Wiechen and Doug MacFarlane (2015) “Renewable Fuels from Concentrated Solar Power: Towards Practical Artificial Photosynthesis” Energy Environ. Sci. doi: 10.1039/C5EE02214B