Solar Energy Laboratory

Research > Solar fuels

Solar fuels via ceria-based partial redox cycle


Cerium-based oxides are promising candidate materials for two-step partial redox solar thermochemical cycles to produce hydrogen or carbon monoxide. The major advantage of the partial redox approach is that the reactive material remains in the solid state throughout the cycle and challenges associated with separation of gases or collection of aerosol particles are obviated. Ceria-based materials display the requisite reduction/oxidation properties, rapid diffusion kinetics, morphological stability, and high catalytic activity for meaningful fuel production characteristics.

Fig. 1. The two-step solar-driven partial redox cycle based on cerium dioxide for the production of solar fuels (H2, CO) from water and carbon dioxide.