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A new artificial photosynthetic system coupling photovoltaic electrocatalysis with photothermal catalysis

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arxiv 2204.04971 v1 pith:G3ARWJN5 submitted 2022-04-11 physics.app-ph

classification physics.app-ph
keywords artificialphotosyntheticproductioncostdevicephotovoltaicsolarsystems
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In this work, we present a novel artificial photosynthetic paradigm with square meter (m2) level scalable production by integrating photovoltaic electrolytic water splitting device and solar heating CO2 hydrogenation device, successfully achieving the synergy of 1 sun driven 19.4% solar to chemical energy efficiency (STC) for CO production (2.7 times higher than state of the art of large-sized artificial photosynthetic systems) with a low cost (equivalent to 1/7 of reported artificial photosynthetic systems). Furthermore, the outdoor artificial photosynthetic demonstration with 1.268 m2 of scale exhibits the CO generation amount of 258.4 L per day, the STC of ~15.5% for CO production in winter, which could recover the cost within 833 suuny days of operation by selling CO.

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