Carbon dioxide electrochemical-reduction catalyst, and preparation and application thereof

A carbon dioxide and catalyst technology, which is applied to the electrochemical reduction of carbon dioxide catalyst and the fields of preparation and application thereof, can solve the problems of unreported electrochemical reduction, and the effect of electrochemical reduction has not received extensive attention, and achieves reduction of catalyst deactivation effect, Good application prospects and the effect of improving current efficiency

Inactive Publication Date: 2014-02-12
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This catalyst has been applied to electrochemical devices such as lithium-ion batteries [Nano.Lett., 7,3723 (2007)], but this catalyst is used in CO 2 Electrochemical reduction has not been reported
In addition, the gas diffusion electrode (GDL), as an important component of the fuel electrode membrane electrode (MEA), has been widely used in the field of fuel cells, but the gas diffusion electrode has a significant impact on CO 2 The effect of electrochemical reduction has not received much attention

Method used

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  • Carbon dioxide electrochemical-reduction catalyst, and preparation and application thereof
  • Carbon dioxide electrochemical-reduction catalyst, and preparation and application thereof
  • Carbon dioxide electrochemical-reduction catalyst, and preparation and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Cu 2 Preparation of O nanowires catalyst precursor: Dissolve 0.02mol copper acetate and 0.002mol 2,5-dimethoxyaniline in 500mL and 100mL deionized water, respectively, to prepare 0.04M copper acetate solution and 0.02M methoxyaniline solution . Take 40mL0.04M copper acetate solution and 10mL0.02M methoxyaniline solution and mix thoroughly to obtain Cu 2 O nanowires catalyst precursor, and transferred to a 100 mL reactor.

Embodiment 2

[0027] A carbon dioxide electrochemical reduction catalyst, including cuprous oxide nanowires, the cuprous oxide nanowires are synthesized by hydrothermal reaction, the preparation method is: take 0.02mol copper acetate and 0.002mol2,5-dimethoxy Aniline was dissolved in 500mL and 100mL of deionized water respectively, and respectively made into 0.04M copper acetate solution and 0.02M methoxyaniline solution. Take 40mL of 0.04M copper acetate solution and 10mL of 0.02M methoxyaniline solution and mix thoroughly to obtain a catalyst precursor, and move the catalyst precursor into a 100mL reactor. Hydrothermal reaction kettle, put the reaction kettle into an oven at 180°C for hydrothermal reaction for 2 hours, centrifuge, wash with ethanol, and dry to obtain cuprous oxide nanowires, which are carbon dioxide electrochemical reduction catalysts, called Cu 2 O nanowires-2h catalyst.

Embodiment 3

[0029]A carbon dioxide electrochemical reduction catalyst, including cuprous oxide nanowires, the cuprous oxide nanowires are synthesized by hydrothermal reaction, the preparation method is: take 0.02mol copper acetate and 0.002mol2,5-dimethoxy Aniline was dissolved in 500mL and 100mL of deionized water respectively, and respectively made into 0.04M copper acetate solution and 0.02M methoxyaniline solution. Take 40mL of 0.04M copper acetate solution and 10mL of 0.02M methoxyaniline solution and mix thoroughly to obtain a catalyst precursor, and move the catalyst precursor into a 100mL reactor. Hydrothermal reaction kettle, put the reaction kettle in an oven for hydrothermal reaction at 180°C for 5 hours, centrifuge, wash with ethanol, and dry to obtain cuprous oxide nanowires, which are carbon dioxide electrochemical reduction catalysts, called Cu 2 O nanowires-5h catalyst.

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Abstract

The invention provides a carbon dioxide electrochemical-reduction catalyst, and preparation and application thereof. The carbon dioxide electrochemical-reduction catalyst is characterized by comprising cuprous oxide nanowires, wherein the cuprous oxide nanowires are synthesized by hydrothermal reaction from 0.01-0.05M copper acetate and 0.01-0.05M anisidine at a volume ratio of 0.9:0.1 to 0.1:0.9. According to the carbon dioxide electrochemical-reduction catalyst, and the preparation and application thereof, the specific surface area of the catalyst is remarkably enlarged, the electrochemical reduction catalysis activity of the catalyst for the reduction of carbon dioxide is improved, and hydrogen evolution reaction is effectively inhibited.

Description

technical field [0001] The invention belongs to the field of carbon dioxide electrochemical reduction catalyst and its preparation and application, in particular to the preparation and application of a gas diffusion electrode-loaded cuprous oxide nanowire carbon dioxide electrochemical reduction catalyst. Background technique [0002] Electrochemical methods convert carbon dioxide (CO 2 ) reduction to usable small organic molecule fuels is a viable approach, producing valuable products such as methanol, ethanol, formic acid, and methane and ethane. The use of renewable resources such as solar energy, wind energy, and tidal energy can effectively remove excess CO in the atmosphere. 2 Converted to a feedstock that can replace conventional fuels. However, due to the slow electrochemical kinetics of carbon dioxide, a large overpotential is often required, which not only results in low energy utilization efficiency but also produces excessively high hydrogen evolution reactions...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J35/06C25B11/06
Inventor 乔锦丽范梦阳姜萍马承愚付奕舒
Owner DONGHUA UNIV
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