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Catalyst electrode for synthesizing two-carbon product by electrochemical reduction of carbon dioxide

A catalyst and electrochemical technology, applied in the field of electrochemical catalysis and bimetallic composite materials, can solve the problems of unfavorable industrial production and achieve the effects of suppressing H2 production, avoiding deviation, and controlling the selectivity of ethanol products

Pending Publication Date: 2022-04-12
内蒙古鄂尔多斯电力冶金集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compound obtained by reduction in this invention is still a multi-component compound, which is unfavorable for direct use in industrial production

Method used

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  • Catalyst electrode for synthesizing two-carbon product by electrochemical reduction of carbon dioxide
  • Catalyst electrode for synthesizing two-carbon product by electrochemical reduction of carbon dioxide
  • Catalyst electrode for synthesizing two-carbon product by electrochemical reduction of carbon dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Cut 1*2cm 2 The carbon cloth electrode base material was put into acetone, ethanol and water for ultrasonic cleaning for 15 minutes, and then dried with nitrogen gas for later use. Magnetron sputtering metal Cu and Cr were respectively carried out on the surface of the pretreated carbon cloth electrode base material. The parameters of the sputtering instrument are as follows: the degree of vacuum is 0.1Pa, the sputtering power is 300W, and the rotation speed of the substrate is 15rpm. Cr sputtering for 60 s and Cu sputtering for 60 s were carried out successively, and the electrode material was taken out after the sputtering program was finished, and annealing treatment was carried out under nitrogen atmosphere at 300° C. for 1 h. Wherein the molar ratio of Cu and Cr is 3:2.

[0043] The electrode material is assembled in an H-type reaction cell, and the electrode material is used as a working electrode, Ag / AgCl as a reference electrode, and a carbon rod as a counter ...

Embodiment 2

[0045] According to the method of Example 1, the sputtering metals are Cu and Al, the vacuum degree is 0.2Pa, the sputtering power is 200W, the substrate rotation speed is 8rpm / min, and the rest are consistent with the example. The molar ratio of Cu to Al is 3:2.1.

Embodiment 3

[0047] Magnetron sputtering metal Cu and Ag were respectively carried out on the surface of carbon paper base material. The parameters of the sputtering instrument are as follows: the degree of vacuum is 0.1Pa, the sputtering power is 300W, and the rotation speed of the substrate is 10rpm. Cu sputtering for 50 s and Ag sputtering for 50 s were carried out successively, and the electrode material was taken out after the sputtering procedure was finished, and annealing treatment was carried out under nitrogen atmosphere at 300° C. for 1 h. The molar ratio of Cu to Ag is 3:1.

[0048] The electrode material is assembled in an H-type reaction cell, and the electrode material is used as a working electrode, Ag / AgCl as a reference electrode, and a carbon rod as a counter electrode for testing in a three-electrode system, with 0.1M KHCO 3 as the electrolyte, CO 2 As the raw material reaction gas, with the assistance of an external bias voltage, the CO 2 The raw material gas underg...

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Abstract

The invention belongs to the field of electrochemical catalysis and bimetallic composite materials, and particularly relates to a catalyst for synthesizing a two-carbon product through electrochemical reduction of CO2, a preparation method and application of the catalyst. The raw materials of the catalyst comprise metal precursors and a substrate material, wherein the metal precursors are two of Cu, Ag, Au, Al and Cr. The preparation method comprises the following steps: pretreating the substrate material; then sputtering a metal precursor on the surface of the pretreated substrate material by adopting a sputtering method to obtain an electrode material; and finally, annealing the electrode material. The bimetallic electro-catalytic material provided by the invention particularly refers to an integrated electro-catalyst which can be used for performing electro-catalytic reduction on CO2 to obtain ethanol as a multi-carbon product, is high in selectivity and takes bimetallic as an active center, is a very effective catalyst for preparing ethanol chemicals through CO2 electro-catalysis, and provides a new thought for preparing a catalyst for preparing the multi-carbon product through CO2 electro-catalysis.

Description

technical field [0001] The invention belongs to the field of electrochemical catalysis and bimetallic composite materials, and specifically relates to a catalyst electrode for electrochemically reducing carbon dioxide to synthesize two-carbon products, a preparation method and an application thereof. Background technique [0002] The development of economic and sustainable technologies is an important way to solve the problem of climate change and the global energy crisis, while CO 2 The utilization of GHGs has become one of the most attractive technologies based on the fact that it can reduce the amount of greenhouse gases in the atmosphere and at the same time convert them into high value-added chemicals for reuse. [0003] CO 2 The utilization methods are mainly divided into the following categories: thermal conversion, photochemical conversion, electrochemical conversion, photoelectrochemical conversion, photothermal conversion, and soft oxidants as dehydrogenation reac...

Claims

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Application Information

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IPC IPC(8): C25B11/091C25B11/089C25B3/07C25B3/03C25B3/26
Inventor 薛大香牛强徐小雷应琪姜雪
Owner 内蒙古鄂尔多斯电力冶金集团股份有限公司
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