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A kind of carbon dioxide electrochemical reduction catalyst and its preparation and application

A carbon dioxide and electrochemical technology, which is applied in the field of carbon dioxide electrochemical reduction catalyst and its preparation and application, can solve the problems that the electrochemical reduction effect has not received widespread attention, so as to increase the catalytic activity of electrochemical reduction, have a good application prospect, reduce the The effect of the hydrogen evolution reaction

Inactive Publication Date: 2017-01-18
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As an important component of the fuel cell membrane electrode (MEA), the gas diffusion electrode (GDL) has been widely used in the field of fuel cells, but the gas diffusion electrode has a great influence on CO 2 The effect of electrochemical reduction has not received much attention

Method used

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  • A kind of carbon dioxide electrochemical reduction catalyst and its preparation and application
  • A kind of carbon dioxide electrochemical reduction catalyst and its preparation and application
  • A kind of carbon dioxide electrochemical reduction catalyst and its preparation and application

Examples

Experimental program
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Effect test

Embodiment 1

[0035] SnO 2 Preparation of nanoflower catalyst precursor: Dissolve 0.004mol stannous chloride dihydrate and 0.01mol trisodium citrate in 10mL deionized water to form a mixture of 0.4M stannous chloride and 1M trisodium citrate Solution, dissolve 0.002mol sodium hydroxide in 10ml of absolute ethanol, take 10mL of the above-mentioned 0.4M stannous chloride and 1M trisodium citrate mixed solution and 10ml 0.2M sodium hydroxide solution and fully mix to obtain SnO 2 Nanoflower catalyst precursor, and moved into a 100mL reactor.

Embodiment 2

[0037] An electrochemical reduction catalyst for carbon dioxide, comprising tin dioxide nanoflowers, the tin dioxide nanoflowers are synthesized by hydrothermal reaction, and the preparation method is as follows: take 0.004mol of stannous chloride dihydrate and 0.01mol of triscitric acid Dissolve sodium together in 10mL deionized water to make a mixed solution of 0.4M stannous chloride and 1M trisodium citrate, dissolve 0.002mol sodium hydroxide in 10ml absolute ethanol, take 10mL of the above 0.4M chlorine The mixed solution of stannous chloride and 1M trisodium citrate and 10ml 0.2M sodium hydroxide solution are fully mixed to obtain SnO 2 Nanoflower catalyst precursor, and moved into a 100mL reactor. The reaction kettle is a hydrothermal reaction kettle with a polytetrafluoroethylene liner and a stainless steel jacket. Put the reaction kettle in an oven at 180°C for a hydrothermal reaction for 2 hours, centrifuge, wash with ethanol, and dry to obtain tin dioxide Nanoflower...

Embodiment 3

[0039] An electrochemical reduction catalyst for carbon dioxide, comprising tin dioxide nanoflowers, the tin dioxide nanoflowers are synthesized by hydrothermal reaction, and the preparation method is as follows: take 0.004mol of stannous chloride dihydrate and 0.01mol of triscitric acid Dissolve sodium together in 10mL deionized water to make a mixed solution of 0.4M stannous chloride and 1M trisodium citrate, dissolve 0.002mol sodium hydroxide in 10ml absolute ethanol, take 10mL of the above 0.4M chlorine The mixed solution of stannous chloride and 1M trisodium citrate and 10ml 0.2M sodium hydroxide solution are fully mixed to obtain SnO 2 Nanoflower catalyst precursor, and moved into a 100mL reactor. The reaction kettle is a hydrothermal reaction kettle with a polytetrafluoroethylene liner and a stainless steel jacket. Put the reaction kettle into an oven at 180°C for a hydrothermal reaction for 5 hours, centrifuge, wash with ethanol, and dry to obtain tin dioxide Nanoflow...

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Abstract

The invention relates to a carbon dioxide electrochemical reduction catalyst as well as a preparation method and an application thereof. The carbon dioxide electrochemical reduction catalyst comprises tin dioxide nanoflower, wherein the tin dioxide nanoflower is synthesized through hydrothermal reaction and comprises the synthesis raw materials including 0.1-0.5M of tin dioxide, 1-5M of trisodium citrate mixed solution and 0.1-0.5M of sodium hydroxide. The carbon dioxide electrochemical reduction catalyst is applied to a carbon dioxide electrochemical reduction catalyst gas diffusion electrode. The carbon dioxide electrochemical reduction catalyst has the advantages that the specific surface area of the catalyst is enlarged, the electrochemical reduction catalytic activity of the catalyst for carbon dioxide reduction is improved, the hydrogen evolution reaction is effectively inhibited, and the selectivity of formic acid in a product is improved.

Description

technical field [0001] The invention belongs to the field of carbon dioxide electrochemical reduction catalyst and its preparation and application, in particular to a carbon dioxide electrochemical reduction catalyst of tin dioxide nanoflowers and its preparation and application. Background technique [0002] With the intensification of human industrial activities, more and more carbon dioxide is discharged into the atmosphere. The problem of global warming caused by the increase of carbon dioxide in the atmosphere has been widely concerned in recent years. Use renewable resources such as solar energy, wind energy, and tidal energy to generate electricity to reduce excess CO in the atmosphere 2 It is a clean, efficient and environmentally friendly method to transform into valuable industrial raw materials such as methane, methanol, formic acid, etc. through electrochemical reduction. However, due to the slow electrochemical kinetics of carbon dioxide, the electrode requires...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90C01G19/00B01J23/14B82Y30/00
CPCB82Y30/00B82Y40/00C01G19/02H01M4/9016Y02E60/50
Inventor 乔锦丽范梦阳张霞敖蓓刘予宇张久俊
Owner DONGHUA UNIV
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