Electrolysis device based on ionic liquid double-electric-layer catalytic carbon dioxide reduction and application thereof

Abstract

The invention belongs to the related technical field of carbon dioxide electrochemical reduction, and discloses an electrolysis device based on ionic liquid double-electric-layer catalytic carbon dioxide reduction. The electrolysis device comprises a working electrode, a carbon dioxide gas chamber and a cathode chamber, the working electrode is connected with a carbon dioxide gas chamber and a cathode chamber, and the working electrode is partially accommodated in the carbon dioxide gas chamber; the working electrode is a gas diffusion electrode, and the longitudinal section of the working electrode is wavy; and carbon dioxide enters the carbon dioxide gas chamber, then flows through the working electrode, enters the cathode chamber and participates in an electrolytic reaction. Carbon dioxide enters the cathode chamber from the carbon dioxide gas chamber and participates in electrolytic reaction, so high-concentration carbon dioxide on the surface of the cathode is guaranteed; the cathode adopts a gas diffusion electrode, so that the carbon dioxide gas can be guaranteed to effectively reach the surface of a cathode catalyst layer; and meanwhile, the longitudinal section of the cathode is wavy, so that the area of double electric layers is increased, and the conversion efficiency and the reaction rate of the carbon dioxide are further improved.

Description

technical field [0001] The invention belongs to the technical field related to the electrochemical reduction of carbon dioxide, and more specifically relates to an electrolysis device and application based on ionic liquid electric double layer catalyzed carbon dioxide reduction. Background technique [0002] As a fully oxidized and thermally stable molecule, carbon dioxide is one of the main greenhouse gases responsible for the global warming effect, so there is an urgent need to create new technologies to reduce the concentration of carbon dioxide in the atmosphere. So far, technologies for capturing carbon dioxide and converting it into small molecule reduction products include thermochemical reduction technology, photocatalytic reduction technology, and electrochemical reduction technology. However, the thermochemical reduction process not only requires high reaction temperature and reaction pressure, but also An equivalent amount of hydrogen is required as a reducing age...

AI Technical Summary

Problems solved by technology

In addition, as an organic substance, ionic liquids and carbon dioxide reduction products such as formic acid are miscible, making some products difficult to separate, and a series of reference electrodes (Cu / CuSO 4 Reference electrode, Ag / AgCl reference electrode, etc.) the reference potential becomes unstable in the organic electrolyte

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