期刊
ENERGIES
卷 15, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/en15010270
关键词
solar to fuel; CO2 reduction; water oxidation; electrochemical; perovskite
资金
- Korea Research Institute of Chemical Technology (KRICT) [SS2122-20]
The study reports a system combining the electrochemical CO2 reduction on the Au dendrite electrode and the water oxidation on the Co-Pi electrode with a Nafion membrane, achieving 8% solar to fuel efficiency under 1 sun illumination. The sustainable reaction condition is secured by balancing each reaction rate based on products analysis, resulting in 85% CO selectivity.
The utilization of solar energy into electrochemical reduction systems has received considerable attention. Most of these attempts have been conducted in a single electrolyte without a membrane. Here, we report the system combined by the electrochemical CO2 reduction on the Au dendrite electrode and the water oxidation on the Co-Pi electrode with a Nafion membrane. An efficient reduction of CO2 to CO in the cathode using the proton from water oxidation in the anode is conducted using perovskite solar cells under 1 sun condition. The sustainable reaction condition is secured by balancing each reaction rate based on products analysis. Through this system, we collect reduction products such as CO and H-2 and oxidation product, O-2, separately. Employing separation of each electrode system and series-connected perovskite solar cells, we achieve 8% of solar to fuel efficiency with 85% of CO selectivity under 1 sun illumination.
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