Electrochemical reactor for electrochemical reduction of carbon dioxide

Abstract

The invention provides an electrochemical reactor for an electrochemical reduction of carbon dioxide. The electrochemical reactor belongs to a three-chamber reactor and is formed by separating three transparent organic glass plates with precise-size grooves and openings by two diaphragms (namely an anionic conductive polymer film and a polypropylene film gas diffusion electrode). The three-chamberreactor comprises a gas chamber, a catholyte chamber and an anolyte chamber, wherein the gas chamber comprises one side of a polypropylene film side of the polypropylene film gas diffusion electrode;the catholyte chamber comprises one catalytic layer side of the polypropylene film gas diffusion electrode, and the catalytic layer uses a silver-based catalyst as a cathode; and the anolyte chambercomprises an anode with a mixed metal oxide catalyst. The whole electrochemical reactor is made of organic glass which is transparent in material, high in hardness and resistant to alkali and acid, and is easy for precise machining and assembling, convenient for direct monitoring and electrochemical reaction observation and free of secondary pollution in a reaction test period.

Description

technical field [0001] The present invention relates to the field of electrochemistry, in particular to the electrochemical reduction of carbon dioxide, and more particularly to the electrochemical reduction of carbon dioxide to carbon monoxide. Background technique [0002] The global climate change caused by the massive burning of fossil fuels is intensifying, and the efficiency of greenhouses is becoming more and more serious. Given the current trend, the remaining carbon budget for achieving temperature control goals in the next 10-20 years will be exhausted rapidly, and people need to take immediate action to reduce man-made Factors causing large carbon dioxide emissions. Artificial photosynthesis system capable of simultaneous CO 2 Electrochemical reduction reaction (CO 2 RR) and water oxidation oxygen evolution reaction (OER), which can realize CO 2 Substantial reduction in emissions and large-scale storage of intermittent solar energy in carbonaceous fuels. Howev...

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Problems solved by technology

[0005] The object of the invention is to develop a novel electrochemical reduction CO 2 The reactor can both overcome the CO 2 The problem of low solubility in the electrolyte solution can also solve the problems of long-term stability of the electrode, corrosion by the electrolyte, and contamination by other metals.

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