Electrode of hydrocarbon produced by carbon dioxide through electrochemical reduction and preparation and application of electrode

Abstract

The invention relates to an electrode of hydrocarbon produced by carbon dioxide through electrochemical reduction and a preparation and an application of the electrode. The electrode comprises a base layer, a thin-film layer and an ordered layer, wherein the thin-film layer is prepared from porous copper nanoparticles; the thin-film layer prepared from the porous nanoparticles is attached to the outer surface of a flake base layer; a copper whisker layer is attached to the surface of the thin-film layer prepared from the porous copper nanoparticles; the thickness of the base layer is 100-500 microns; the thickness of the porous nano thin-film layer is 100-200 microns; and the thickness of the copper whisker layer is about 100-500 microns. According to the electrode with the structure, the reaction activity area is effectively increased; mass transfer of a reactant is improved; and reduction of reaction polarization resistance and mass transfer polarization resistance is facilitated, so that the conversion efficiency of CO2 is improved; the selectivity of an ERC reaction product can be improved by regulating and controlling the active substances with different shapes; the stability of Cu metal can be improved by the structure; and the service lifetime of an ERC reaction catalyst is prolonged.

Description

technical field [0001] The invention relates to an electrode structure for producing hydrocarbons by electrochemical reduction of carbon dioxide and its preparation and application, and belongs to the field of resource utilization of carbon dioxide. Background technique [0002] Energy is an important material basis for national economic development and people's lives. At present, my country's economy and society are in a stage of rapid development, and the demand for energy continues to increase. CO 2 Gas emissions are also increasing. According to the latest report of the International Energy Agency (IEA), the global CO 2 Emissions reached 31.6 billion tons; by 2030, annual carbon dioxide emissions are expected to increase to 43 billion tons, an increase of 60%. Therefore, how to reduce CO 2 emissions, effective use of CO 2 It has become a research hotspot in recent years. [0003] CO 2 There are three main methods of emission reduction and utilization: (1) capture ...

AI Technical Summary

Problems solved by technology

Although the above electrode structure can improve the conversion rate of carbon dioxide to a certain extent, due to the small specific surface area of ​​Cu nanoparticles, and the electrode preparation process requires an additional binder, which reduces the utilization rate of the catalyst.

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