High-flux solar-driven thermochemical dissociation of CO2 and H2O using nonstoichiometric ceria

William C. Chueh, Christoph Falter, Mandy Abbott, Danien Scipio, Philipp Furler, Sossina M. Haile, Aldo Steinfeld

Research output: Contribution to journalArticlepeer-review

979 Scopus citations

Abstract

Because solar energy is available in large excess relative to current rates of energy consumption, effective conversion of this renewable yet intermittent resource into a transportable and dispatchable chemical fuel may ensure the goal of a sustainable energy future. However, low conversion efficiencies, particularly with CO2 reduction, as well as utilization of precious materials have limited the practical generation of solar fuels. By using a solar cavity-receiver reactor, we combined the oxygen uptake and release capacity of cerium oxide and facile catalysis at elevated temperatures to thermochemically dissociate CO2 and H2O, yielding CO and H2, respectively. Stable and rapid generation of fuel was demonstrated over 500 cycles. Solar-to-fuel efficiencies of 0.7 to 0.8% were achieved and shown to be largely limited by the system scale and design rather than by chemistry.

Original languageEnglish (US)
Pages (from-to)1797-1801
Number of pages5
JournalScience
Volume330
Issue number6012
DOIs
StatePublished - Dec 24 2010

ASJC Scopus subject areas

  • General

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