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Cu/cu2o interface nanostructures for electrochemical co2 reduction

An electrochemical, CO2 technology, applied in nanotechnology, chemical/physical process, nanotechnology, etc. for materials and surface science, can solve the problems of lack of Cu thin film surface area and active site research

Pending Publication Date: 2021-09-28
HONDA MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, studies on the surface area and active sites of Cu thin films are lacking

Method used

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  • Cu/cu2o interface nanostructures for electrochemical co2 reduction
  • Cu/cu2o interface nanostructures for electrochemical co2 reduction
  • Cu/cu2o interface nanostructures for electrochemical co2 reduction

Examples

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Embodiment 1

[0046] Example 1: Using some Cu from Comparative Example 1 2 O crystals to form Cu / Cu according to the present invention 2 O particles. Specifically, 132 mg of Cu of Comparative Example 1 was mixed at room temperature 2 O crystals were added to 40 ml of double distilled HO 2 O and stirred for 10 minutes. Then, add 2ml of hydrazine hydrate (N 2 h 4 ·H 2 0), heated to 60 °C for 2 minutes to allow them to react, then passively cooled to ambient temperature. This reaction leads to Cu 2 O crystals are partially reduced to form Cu / Cu 2 O particles. The resulting Cu / Cu was purified by centrifugation 2 O pellet precipitate, which was washed 3 times with deionized water, and dried under vacuum at 50 °C overnight.

[0047] Analysis of synthesized Cu / Cu by SEM and energy dispersive energy spectroscopy 2 Structural properties of O particles. Figure 6-8 shows Cu / Cu 2 SEM image of O particles, which exhibit a Cu 2 Facets on the rougher surface of the O crystal. Cu / Cu 2 O p...

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Abstract

A method of electrochemical reduction of CO2 includes the use of a catalyst of Cu / Cu2O particles including Cu / Cu2O interfaces. The catalyst may be included in an electrochemical cell for the conversion of CO2 to value-added products. The electrochemical cell may include an anode, a cathode including the Cu / Cu2O particles including Cu / Cu2O interfaces, and an aqueous medium containing CO2 or CO3-2. The CO2 or C03-2is reduced by contacting the Cu / Cu2O particles with the aqueous medium while supplying electricity to the cell. The conversion of CO2 by the electrochemical reduction thereof has higher Faradaic Efficiency due to the Cu / Cu2O interfaces in the Cu / Cu2O particles.

Description

Background technique [0001] Global energy consumption is largely dependent on the combustion of fossil fuels, but sustainable alternatives need to be developed to ensure long-term economic growth while mitigating anthropogenic carbon dioxide (CO 2 ) Environmental problems brought about by the increase in emissions. To address this issue, while addressing atmospheric CO 2 Concerning elevated concentrations, the electrochemical reduction of CO2 to carbon-based value-added products has been proposed, which themselves can be used as fuels or fuel precursors. A cost-effective process for the electrochemical conversion of carbon dioxide into value-added products may require efficient, selective, and stable electrocatalysts. [0002] Precious metals are used for CO 2 Potential candidates for transformed electrocatalysts. Copper is an inexpensive metal and thus a potential electrocatalyst candidate, and copper nanostructures have more potential for electrochemical CO 2 Reduced su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/054C25B3/26C25B3/07C25B3/03C25B1/23C25B1/50C25B9/00B82Y30/00B82Y40/00C25B3/25
CPCC25B1/00B01J23/72B01J37/16B01J37/031C25B3/25C25B11/091B01J35/33C25B3/07C25B9/17C25B3/26
Inventor 陈固纲饶毅李霞
Owner HONDA MOTOR CO LTD