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CO Electroreduction To Syngas With Tunable Composition In An Artificial Leaf. | LitMetric

AI Article Synopsis

  • Artificial leaves (a-leaves) can efficiently convert CO2 into syngas using solar energy, allowing for decentralized and flexible production of valuable chemicals.
  • The study highlights that by adjusting the flow of the electrolyte, a-leaves can produce different CO:H ratios on demand without sacrificing performance.
  • Testing has shown that a-leaves can achieve a CO:H ratio of 1.8-2.3 with minimal voltage deviation, which can enhance processes like Fischer-Tropsch synthesis and anaerobic fermentation.

Article Abstract

Artificial leaves (a-leaves) can reduce carbon dioxide into syngas using solar power and could be combined with thermo- and biocatalytic technologies to decentralize the production of valuable products. By providing variable CO : H ratios on demand, a-leaves could facilitate optimal combinations and control the distribution of products in most of these hybrid systems. However, the current design procedures of a-leaves concentrate on achieving high performance for a predetermined syngas composition. This study demonstrates that incorporating the electrolyte flow as a design variable enables flexible production without compromising performance. The concept was tested on an a-leaf using a commercial cell, a Cu O:In cathodic catalyst, and an inexpensive amorphous silicon thin-film photovoltaic module. Syngas with CO : H ratio in the range of 1.8-2.3 could be attained with only 2 % deviation from the optimal cell voltage and controllable solely by catholyte flow. These features could be beneficial for downstream technologies such as Fischer-Tropsch synthesis and anaerobic fermentation.

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Source
http://dx.doi.org/10.1002/cssc.202301398DOI Listing

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