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Preparation method and application of cuprous chloride/nickel foam composites with surface modified by metallic copper

A technology of cuprous chloride and surface metal, applied in the field of electrochemistry, to achieve the effect of simple and easy operation process, short reaction time, and easy industrial implementation

Active Publication Date: 2018-12-18
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there has been no report on the Cu@CuCl / NF composite electrode obtained by in situ reduction of CuCl / NF material by calcination method by adjusting the calcination temperature.

Method used

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  • Preparation method and application of cuprous chloride/nickel foam composites with surface modified by metallic copper
  • Preparation method and application of cuprous chloride/nickel foam composites with surface modified by metallic copper
  • Preparation method and application of cuprous chloride/nickel foam composites with surface modified by metallic copper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Comparative test, including the following steps:

[0030] Step 1: Sonicate the cut NF with a size of 1 cm×1 cm in acetone and absolute ethanol for 30 minutes, and then in deionized water for 3 times, 20 minutes each time, and finally soak in deionized water for use.

[0031] Step 2: Prepare 8.5% CuCl with deionized water 2 The solution, namely solution A, was transferred to the beaker where the solution A was placed in a refrigerator set at 5°C and allowed to stand for 30 minutes.

[0032] Step 3: Put the NF soaked in deionized water into solution A and continue to stand in the refrigerator at 5 °C for 2 hours, then take out the NF and soak it in deionized water and absolute ethanol for 3 times respectively, and finally put it under normal temperature Dry to obtain CuCl / NF composite material.

Embodiment 2

[0034] A preparation method for surface metal copper modified cuprous chloride / nickel foam composite material, comprising the steps of:

[0035] Step 1: Sonicate the cut NF with a size of 1 cm×1 cm in acetone and absolute ethanol for 30 minutes, and then in deionized water for 3 times, 20 minutes each time, and finally soak in deionized water for use.

[0036] Step 2: Prepare 8.5% CuCl with deionized water 2 The solution, namely solution A, was transferred to the beaker where the solution A was placed in a refrigerator set at 5°C and allowed to stand for 30 minutes.

[0037] Step 3: Put the NF soaked in deionized water into solution A and continue to stand in the refrigerator at 5 °C for 2 hours, then take out the NF and soak it in deionized water and absolute ethanol for 3 times respectively, and finally put it under normal temperature Dry to obtain CuCl / NF composite material.

[0038] Step 4: Place the CuCl / NF composite in a semi-closed porcelain boat and transfer it to a ...

Embodiment 3

[0040] A preparation method for surface metal copper modified cuprous chloride / nickel foam composite material, comprising the steps of:

[0041] Step 1: Sonicate the cut NF with a size of 1 cm×1 cm in acetone and absolute ethanol for 30 minutes, then in deionized water for 3 times, 20 minutes each time, and finally soak in deionized water for use.

[0042] Step 2: Prepare 8.5% CuCl with deionized water 2 The solution, namely solution A, was transferred to the beaker where the solution A was placed in a refrigerator set at 5°C and allowed to stand for 30 minutes.

[0043] Step 3: Put the NF soaked in deionized water into solution A and continue to stand in the refrigerator at 5 °C for 2 hours, then take out the NF and soak it in deionized water and absolute ethanol for 3 times, and finally put it under normal temperature Dry to obtain CuCl / NF composite material.

[0044] Step 4: Place the CuCl / NF composite in a semi-closed porcelain boat and transfer it to a temperature-progr...

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Abstract

The invention belongs to the technical field of electrochemistry, and relates to preparation of cuprous chloride / nickel foam composites, in particular to a preparation method and application of cuprous chloride / nickel foam composites with the surface modified by metallic copper. The preparation method comprises the steps that cut nickel foam (NF) is ultrasonically treated with acetone, absolute ethyl alcohol and deionized water and is then soaked in the deionized water for later use; copper chloride is dissolved in the deionized water and is stored at a low temperature for 30 min, the washed NF is added into the solution to stand for 2 h and is then taken out to be cleaned with the copper chloride and the absolute ethyl alcohol, and drying is conducted at the normal temperature to obtain CuCl / NF; and finally, the CuCl / NF is calcinated at 150-300 DEG C for 0.5-1.5 h with 10% of H2 / Ar mixed gas, so that the cuprous chloride / nickel foam composites with the surface modified by metallic copper are obtained. The preparation method is easy to operate and implement, the reaction time is short, and raw materials are cheap, easy to obtain and nontoxic and meet the requirement for environmental friendliness. When used for an electrochemical reduction solution CO2, a prepared Cu@CuCl / NF composite electrode has excellent electrochemical activity and stability and is suitable for industrialization.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, and relates to a preparation method of a cuprous chloride / nickel foam (CuCl / NF) composite material, in particular to a method for preparing a copper chloride / nickel foam (Cu@CuCl / NF) composite material modified by surface metal copper Preparation method and its application. Background technique [0002] The greenhouse gas CO produced when fossil fuels are burned 2 Has seriously damaged the ecological environment, how to reduce CO in the atmosphere 2 content has become an important issue at this stage. In recent years, the field of electrocatalysis has received extensive attention from researchers, through the electrochemical reduction of CO 2 It's a very attractive idea to generate the fuel that humans need. However, the electrochemical reduction of CO 2 It is often accompanied by a competing reaction, that is, the hydrogen evolution reaction (HER), especially in a system using an a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/03C25B11/06C25B1/00C25B3/04C25B3/25
CPCC25B1/00C25B3/25C25B11/031C25B11/091
Inventor 施伟东尉兵肖立松张正媛
Owner JIANGSU UNIV
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