Whither solar fuels

Solar fuels are a long-term permanent solution to renewable fuel technologies to reduce foreign oil imports and carbon dioxide emissions. Although promising in laboratory and pilot scale, they possess inherent technical and economic challenges that hinder large-scale implementation. This work examines critical issues for four solar fuel technologies: solar-powered electrolysis, photoelectrochemical (PEC) systems, solar biomass gasification, and solar thermochemical cycles. Also identified are areas of chemical and materials engineering research that are essential to cost-competitive solar fuels production.

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