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High-Flux Solar-Driven Thermochemical Dissociation of CO2 and H2O Using Nonstoichiometric Ceria

Amanda 添加于 2010-12-28 17:22 | 1650 次阅读 | 0 个评论

作者
Chueh WC, Falter C, Abbott M, Scipio D, Furler P, Haile SM, Steinfeld A
摘要
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.
详细资料
- 文献种类:期刊
- 期刊名称: Science
- 期刊缩写: Science
- 期卷页: 2010年第330卷第6012期 1797-1801页
- ISBN: 0036-8075
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