A simple electrodeposition co-ce/nf electrode material and its preparation and application

An electrode material and electrodeposition technology, applied in the field of hydrogen energy, can solve the problems of high hydrogen overpotential, low electrocatalytic efficiency, poor electrocatalytic behavior, etc., and achieve the effects of short experimental period, improved hydrogen evolution performance, and simple synthesis method

Active Publication Date: 2021-07-20
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, nickel-based alloys still exhibit poor electrocatalytic behavior compared with noble metals, including high hydrogen overpotential and low electrocatalytic efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The formulation of the electrodeposition solution:

[0034] Cobalt nitrate 1.0mmol

[0035] Cerium nitrate 0.6mmol

[0036] Ammonium chloride 5mmol

[0037] Deionized water 50ml.

[0038] Co-Ce / NF electrode material is prepared by the preparation method of following steps:

[0039] Dissolve 1.0mmol of cobalt nitrate, 0.6mmol of cerium nitrate and 5mmol of ammonium chloride in 50ml of deionized water, and ultrasonically disperse for 20 minutes to obtain an electrodeposition solution; then place the electrodeposition solution in the electrodeposition device, and connect the working electrode to 12mm×4mm× 1mm of nickel foam was electrodeposited for 2 hours at a scanning speed of 20mV / s to obtain Co-Ce / NF, rinsed with ethanol and water for 3 times, and then dried in a vacuum oven at 60°C for 16 hours to obtain the target product Co-Ce / NF electrode material.

[0040] The Co-Ce / NF electrode material prepared in Example 1 above was used as a hydrogen evolution catalytic ...

Embodiment 2

[0044] The formulation of the electrodeposition solution:

[0045] Cobalt nitrate 1.0mmol

[0046] Cerium nitrate 1.0mmol

[0047] Ammonium chloride 8mmol

[0048] Deionized water 40ml.

[0049] Co-Ce / NF electrode material is prepared by the preparation method of following steps:

[0050] Dissolve 1.0mmol cobalt nitrate, 1.0mmol cerium nitrate and 8mmol ammonium chloride in 40ml deionized water, and ultrasonically disperse for 30 minutes to obtain an electrodeposition solution; place the electrodeposition solution in the electrodeposition device, and connect the working electrode to 12mm×2mm×1mm Nickel foam was electrodeposited at a scanning speed of 80mV / s for 2h to obtain Co-Ce / NF, rinsed with ethanol and water for 3 times, and then dried in a vacuum oven at 80°C for 20h to obtain the target product Co-Ce / NF electrode material.

[0051] The Co-Ce / NF electrode material prepared in Example 2 above was used as a hydrogen evolution catalytic electrode. The hydrogen evolution...

Embodiment 3

[0055] The formulation of the electrodeposition solution:

[0056] Cobalt nitrate 0.8mmol

[0057] Cerium nitrate 0.3mmol

[0058] Ammonium chloride 5mmol

[0059] Deionized water 30ml.

[0060] Co-Ce / NF electrode material is prepared by the preparation method of following steps:

[0061] Dissolve 0.8mmol cobalt nitrate, 0.3mmol cerium nitrate and 5mmol ammonium chloride in 30ml deionized water, and ultrasonically disperse for 10 minutes to obtain an electrodeposition solution; place the electrodeposition solution in the electrodeposition device, and connect the working electrode to 15mm×5mm×1mm Nickel foam was electrodeposited at a scanning speed of 200mV / s for 40min to obtain Co-Ce / NF, rinsed with ethanol and water for 4 times, and then dried in a vacuum oven at 60°C for 24h to obtain Co-Ce / NF electrode material .

[0062] The Co-Ce / NF electrode material prepared in Example 3 above was used as a hydrogen evolution catalytic electrode. The hydrogen evolution catalytic e...

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PUM

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Abstract

The present invention relates to a kind of simple electrodeposition Co-Ce / NF electrode material and its preparation and application. Clarify, obtain electrodeposition solution; (2) in the electrodeposition device that the electrodeposition solution in step (1) is housed, nickel foam is connected as working electrode, and silver chloride electrode is made reference electrode, and platinum wire electrode is counter electrode. The electrode is obtained through a one-step electrodeposition method to obtain Co-Ce / NF material; (3) after the obtained Co-Ce / NF material is washed and dried, the target product Co-Ce / NF electrode material is obtained. Compared with the prior art, the Co-Ce / NF electrode material synthesized by the present invention produces a synergistic effect by forming an alloy of the rare earth element cerium and cobalt, and improves the electrochemical performance of the cobalt alloy with the activity of the rare earth element, and the nickel foam As a carrier, the surface area of ​​the material is increased. In addition, the synthesis method is simple, the energy consumption is low, and the electrochemical performance is excellent. It is expected to be applied to large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of hydrogen energy, and relates to a simple electrodeposited Co-Ce / NF electrode material and its preparation and application. Background technique [0002] Hydrogen energy is currently recognized as a sustainable and most promising clean energy that can replace fossil fuels in the future. Splitting water in alkaline solution is an efficient method widely used for hydrogen production. In recent years, great efforts have been made to obtain electrode materials with low hydrogen overpotential and high catalytic efficiency. Generally, Pt and other noble metals have been proposed as optimal electrocatalysts for the hydrogen evolution reaction (HER). However, its widespread application in large-scale industrial hydrogen production is limited due to its scarcity and high cost. Therefore, promoting the development of earth-abundant new electrode materials to replace noble metal electrocatalysts remains a critical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/054C25B11/089C25B11/031C25B1/02C25D3/56B01J23/83B01J37/34
CPCB01J23/83B01J35/0033B01J37/348C25B1/04C25D3/562Y02E60/36
Inventor 蒋继波陈宇凯丛海山唐佳斌胡晓敏王露露杨圆圆马健韩生
Owner SHANGHAI INST OF TECH
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