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Preparation method and application of amorphous (Ni,Fe)OOH thin film electrocatalyst supported on surface of foamed nickel

A technology of electrocatalyst and nickel foam, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve complex precursors, harsh reaction conditions and other problems, and achieve high-efficiency catalytic activity and effective charge Effect of transfer, high-efficiency electrocatalytic activity

Inactive Publication Date: 2019-07-05
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these preparation methods usually involve complex precursors or harsh reaction conditions

Method used

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  • Preparation method and application of amorphous (Ni,Fe)OOH thin film electrocatalyst supported on surface of foamed nickel
  • Preparation method and application of amorphous (Ni,Fe)OOH thin film electrocatalyst supported on surface of foamed nickel
  • Preparation method and application of amorphous (Ni,Fe)OOH thin film electrocatalyst supported on surface of foamed nickel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Preparation of Ferric Nitrate Solution

[0033] (1) Weigh 3.096g of ferric nitrate nonahydrate, dissolve it in 8mL of distilled water, stir at room temperature until completely dissolved, and the prepared ferric nitrate solution is 1.6mol / L.

[0034] (2) Use a 1000 μL pipette to pipette 1 mL of 1.6 mol / L ferric nitrate solution, and then pipette 7 mL of distilled water for dilution to obtain a 0.2 mol / L ferric nitrate solution.

[0035] 2. Preparation of Foamed Nickel

[0036] (1) Soak nickel foam in 0.1mol / L hydrochloric acid solution, acetone solution, and absolute ethanol solution for 10 minutes, and finally wash it three times with distilled water.

[0037] 3. Preparation of 1.0M KOH solution

[0038] (1) Measure about 50mL of ultrapure water and 5.61g of potassium hydroxide, dissolve them with ultrapure water and stir, after cooling, dilute to volume in a 100mL volumetric flask.

[0039] 4. Preparation of amorphous (Ni,Fe)OOH films supported on the surface of...

Embodiment 2

[0045] 1. Preparation of Ferric Nitrate Solution

[0046] (1) Weigh 3.096g of ferric nitrate nonahydrate, dissolve it in 8mL of distilled water, stir at room temperature until completely dissolved, and the prepared ferric nitrate solution is 1.6mol / L.

[0047] (2) Use a 1000 μL pipette to pipette 1 mL of 1.6 mol / L ferric nitrate solution, and then pipette 15 mL of distilled water for dilution to obtain a 0.1 mol / L ferric nitrate solution.

[0048] 2. Preparation of Foamed Nickel

[0049] (1) Soak nickel foam in 0.1mol / L hydrochloric acid solution, acetone solution, and absolute ethanol solution for 10 minutes, and finally wash it three times with distilled water.

[0050] 3. Preparation of 1.0M KOH solution

[0051] (1) Measure about 50mL of ultrapure water and 5.61g of potassium hydroxide, dissolve them with ultrapure water and stir, after cooling, dilute to volume in a 100mL volumetric flask.

[0052] 4. Preparation of amorphous (Ni,Fe)OOH films supported on the surface of ...

Embodiment 3

[0057] 1. Preparation of Ferric Nitrate Solution

[0058] (1) Weigh 3.096g of ferric nitrate nonahydrate, dissolve it in 8mL of distilled water, stir at room temperature until completely dissolved, and the prepared ferric nitrate solution is 1.6mol / L.

[0059] (2) Use a 1000 μL pipette to pipette 1 mL of 1.6 mol / L ferric nitrate solution, and then pipette 3 mL of distilled water for dilution to obtain a 0.4 mol / L ferric nitrate solution.

[0060] 2. Preparation of Foamed Nickel

[0061] (1) Soak nickel foam in 0.1mol / L hydrochloric acid solution, acetone solution, and absolute ethanol solution for 10 minutes, and finally wash it three times with distilled water.

[0062] 3. Preparation of 1.0M KOH solution

[0063] (1) Measure about 50mL of ultrapure water and 5.61g of potassium hydroxide, dissolve them with ultrapure water and stir, after cooling, dilute to volume in a 100mL volumetric flask.

[0064] 4. Preparation of amorphous (Ni,Fe)OOH films supported on the surface of...

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Abstract

The invention discloses a preparation method of an amorphous (Ni,Fe)OOH thin film electrocatalyst supported on the surface of foamed nickel. The method comprises the following steps: (1) ultrasonically cleaning the foamed nickel (2) impregnating the ultrasonically cleaned foamed nickel in an iron nitrate solution, and performing mechanical oscillation to form an amorphous (Ni,Fe)OOH thin film supported on the surface of the foamed nickel. The preparation method provided by the invention is simple and is easy to operate, and the prepared amorphous (Ni,Fe)OOH thin film electrocatalyst supportedon the surface of the foamed nickel has a high catalytic activity and a good stability to an anode reaction of alkaline water electrolysis at a high current density.

Description

technical field [0001] The invention belongs to the technical fields of nanometer material technology and electrochemical energy conversion, and in particular relates to a preparation method and application of an amorphous (Ni, Fe) OOH film electrocatalyst loaded on the surface of foamed nickel. Background technique [0002] With the increasing energy crisis and environmental pollution problems. As a green renewable energy, hydrogen energy is clean and efficient compared to other traditional fuels such as coal. Water electrolysis is a promising method for renewable energy storage for the large-scale conversion of water into clean hydrogen and oxygen with high energy density. In the two half-reactions of electrocatalytic water splitting, we found that the anodic process involves the transfer of four electrons under acid-base conditions, the reaction kinetics is inert, and a high overpotential is required, which is the reaction bottleneck for the electrolysis of water to prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J37/34C25B11/06C25B11/03C25B1/04
CPCB01J23/755B01J37/343C25B1/04C25B11/031C25B11/075B01J35/33Y02E60/36
Inventor 侯阳袁佳欣杨彬雷乐成
Owner ZHEJIANG UNIV
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