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A cathode material for electrocatalytic reduction of carbon dioxide to generate ratio controllable synthesis gas, its preparation method and application

A technology of carbon dioxide and cathode materials, applied in the direction of electrodes, electrolytic components, electrolytic processes, etc., to achieve the effects of good catalytic stability, cheap and easy-to-obtain materials, and simple modification processes

Active Publication Date: 2019-12-31
北京中立鸿环境技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the performance, cost, and subsequent product separation of electrode catalysts are constraints for CO 2 The main factors of the practical application of ER

Method used

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  • A cathode material for electrocatalytic reduction of carbon dioxide to generate ratio controllable synthesis gas, its preparation method and application
  • A cathode material for electrocatalytic reduction of carbon dioxide to generate ratio controllable synthesis gas, its preparation method and application
  • A cathode material for electrocatalytic reduction of carbon dioxide to generate ratio controllable synthesis gas, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Cut the h62 brass sheet into a size suitable for the shape of the electrolytic cell;

[0035] 2) Degreasing pretreatment of the cut brass sheet;

[0036] 3) While degreasing, heat up the tube furnace to a set temperature of 500°C, and continuously inject air at a flow rate of 300ml / min;

[0037] 4) Place the clean brass sheet in a tube furnace that has been raised to the set temperature, and maintain a constant temperature for heating treatment. The treatment time is maintained for 1 hour. After treatment, it is naturally cooled in an air atmosphere;

[0038] 5) The brass sheet after electrochemical reduction and heating treatment, the electrolyte is 0.5 M potassium bicarbonate solution, and the counter electrode is RuO 2 Coated titanium mesh electrode, the reference electrode is a saturated calomel electrode, the reduction potential is set to -1.3V, the reduction to the current curve remains stable, the reduction treatment electrode piece is taken out and dried with inert ga...

Embodiment 2

[0041] 1) Cut the h62 brass sheet into a size suitable for the shape of the electrolytic cell;

[0042] 2) Degreasing pretreatment of the cut brass sheet;

[0043] 3) While degreasing, heat up the tube furnace to a set temperature of 500°C, and continuously inject air at a flow rate of 300ml / min;

[0044] 4) Put the clean brass sheet in a tube furnace that has been raised to the set temperature, and keep it at a constant temperature for heat treatment, keep the treatment time for 3 hours, and cool down naturally in the air atmosphere after treatment;

[0045] 5) The brass sheet after electrochemical reduction and heating treatment, the electrolyte is 0.5 M potassium bicarbonate solution, and the counter electrode is RuO 2 Coated titanium mesh electrode, the reference electrode is a saturated calomel electrode, the reduction potential is set to -1.3V, the reduction to the current curve remains stable, the reduction treatment electrode piece is taken out and dried with inert gas to obtai...

Embodiment 3

[0047] 1) Cut the h62 brass sheet into a size suitable for the shape of the electrolytic cell;

[0048] 2) Degreasing pretreatment of the cut brass sheet;

[0049] 3) While degreasing, heat up the tube furnace to the set temperature of 300°C, and continuously inject air at a flow rate of 300ml / min;

[0050] 4) Put the clean brass sheet in a tube furnace that has been raised to the set temperature, and keep it at a constant temperature for heat treatment, keep the treatment time for 3 hours, and cool down naturally in the air atmosphere after treatment;

[0051] 5) The brass sheet after electrochemical reduction and heating treatment, the electrolyte is 0.5 M potassium bicarbonate solution, and the counter electrode is RuO 2 Coated titanium mesh electrode, the reference electrode is a saturated calomel electrode, the reduction potential is set to -1.3V, the reduction to the current curve remains stable, the reduction treatment electrode piece is taken out and dried with inert gas to obt...

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Abstract

The invention relates to a cathode material for generating ratio-controllable synthesis gas through carbon dioxide reducing under electrocatalysis, a preparation method and application. The preparation method comprises the following steps that (a) an h62 brass strip is heated and calcined in flowing air bath; and (b) after cooling is conducted, the calcined brass strip is subjected to electrochemical reduction in an electrolyte, and finally the cathode material is obtained. The preparation method is simple, operation is easy, treatment conditions are changed to form different catalysis surfaces, the performance of Co and H2 generated through catalysis is adjusted and controlled accordingly, and thus ratio adjusting and controlling of the synthesis gas composed of CO and H2 is achieved.

Description

Technical field [0001] The invention belongs to the field of electrochemical reduction of carbon dioxide, and in particular relates to a cathode material for electrocatalytic reduction of carbon dioxide to generate synthesis gas with a controllable ratio, and a preparation method and application. Background technique [0002] Electrochemical reduction of CO 2 (CO 2 ER) technology will chemically stable CO 2 Using electrochemical methods to force catalytic reduction to CO, HCOOH, alcohols and other small molecular energy substances, which is CO 2 An important way of resource utilization, in which the research of cathode catalyst materials is the focus of this method. [0003] There has been a lot about CO 2 Most of the research reports on ER cathode materials focus on building a catalytically active interface with a unique microscopic morphology through component control and changing processing methods to achieve CO 2 ER has high product selectivity and high energy efficiency. [0004...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/06C25B1/00
CPCC25B1/00C25B11/075
Inventor 杨晓进胡汉君杜念王煜添唐阳万平玉
Owner 北京中立鸿环境技术有限公司
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