Three-dimensional anode material and preparation method for hydrogen production by electrolysis of water

An anode material, a technology for electrolyzing water, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as being unsuitable for the controllable preparation of multi-component nanostructured oxygen evolution electrodes, achieve controllable structural components and improve utilization. , the effect of simple preparation process

Active Publication Date: 2017-06-16
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is simple and easy to operate, but it is not suitable for the controllable preparation of multi-component nanostructured oxygen evolution electrodes

Method used

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  • Three-dimensional anode material and preparation method for hydrogen production by electrolysis of water
  • Three-dimensional anode material and preparation method for hydrogen production by electrolysis of water
  • Three-dimensional anode material and preparation method for hydrogen production by electrolysis of water

Examples

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Effect test

Embodiment 1

[0031] A new three-dimensional anode material for hydrogen production by electrolysis of water, including nitrogen-doped carbon / transition metal manganese-cobalt oxide supported on nickel foam and its three-dimensional anode sheet for hydrogen production by electrolysis of water, using a liquid-solid synthesis method In situ preparation, the specific steps are:

[0032] (1) Immerse the clean nickel foam sheet into 10mL of water and ethanol mixed solution containing manganese dichloride, cobalt chloride, citric acid, thiourea (molar ratio 1:2:2:1) (V 水 / V 醇 =1:3), take it out to dry at 75°C, and repeat three times;

[0033] (2) Calcinate the nickel foam sheet obtained in step 1 at 800°C for 6h under the protection of Ar gas at 50mL / min, and then at 200°C, O 2 Heating under the atmosphere for 1 h, cooling to room temperature to obtain a three-dimensional electrode of nitrogen-doped carbon / manganese-cobalt oxide supported on nickel foam.

[0034] The macroscopic comparison of ...

Embodiment 2

[0041] A new three-dimensional anode material for hydrogen production by electrolysis of water, including nitrogen-doped carbon / transition metal nickel-iron oxide supported by nickel foam and its three-dimensional anode sheet for hydrogen production by electrolysis of water, using a liquid-solid synthesis method In situ preparation, the specific steps are:

[0042] (1) Dip the clean foamed nickel sheet into 10mL of water and ethanol mixed solution (V 水 / V 醇 =1:1), take it out to dry at 75°C, and repeat three times;

[0043] (2) Calcinate the foamed nickel sheet obtained in step 1 at 700°C for 1 hour under the protection of Ar gas at 10mL / min, and then at 250°C, O 2 Heating under the atmosphere for 1.2h, cooling to room temperature to obtain a three-dimensional electrode of nitrogen-doped carbon / nickel-iron oxide supported on nickel foam.

Embodiment 3

[0045] A new three-dimensional anode material for hydrogen production by electrolysis of water, including nitrogen-doped carbon / transition metal cobalt-copper oxide supported on nickel foam and its three-dimensional anode sheet for hydrogen production by electrolysis of water, using a liquid-solid synthesis method In situ preparation, the specific steps are:

[0046] (1) Immerse the clean nickel foam sheet into 10mL of water and ethanol mixed solution (V 水 / V 醇 =1:9), take it out to dry at 75°C, and repeat three times;

[0047] (2) Calcinate the foamed nickel sheet obtained in step 1 at 600°C for 5h under the protection of 20mL / min Ar gas, and then at 220°C, O 2 Heating under the atmosphere for 1.5h, cooling to room temperature and then obtaining a three-dimensional electrode of nitrogen-doped carbon / cobalt-copper oxide supported on nickel foam.

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Abstract

The invention provides a novel three-dimensional anode material for hydrogen production by water electrolysis. The novel three-dimensional anode material comprises nickel foam loaded N-doped carbon / transition metal oxide prepared in situ according to a liquid-solid synthesis method as well as a three-dimensional anode piece used for hydrogen production through water electrolysis. A preparation method of the three-dimensional anode material particularly comprises the following steps: (1) immersing clean nickel foam into a mixed solution, containing transition metal salt, a silicon source and a nitrogen source, of water and ethanol, taking out the nickel foam for airing, and repeating for three times; (2) calcining the nickel foam piece obtained in the step (1) for 1-6 h at 600-800 DEG C under the protection of inert gas, and then heating for 1-1.5 h at 200-250 DEG C in the atmosphere of O2, so as to obtain a nickel foam loaded N-doped carbon / transition metal oxide three-dimensional electrode. The three-dimensional electrode produced according to the preparation method has relatively low oxygen evolution overvoltage, has relatively high structural stability and oxygen evolution catalytic activity under long-term alkaline electrolysis condition, is simple in production process and adjustable in electrode component and variety, and has wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production materials by electrolysis of water, and in particular relates to a novel three-dimensional anode material for hydrogen production by electrolysis of water. Background technique [0002] Hydrogen production by electrolysis of water is one of the effective means to convert non-grid-connected green energy such as solar energy and wind energy into chemical energy, while the anode oxygen evolution reaction process in hydrolysis hydrogen production is a complex 4H + / 4e - The electrocatalytic activity of oxygen evolution anode materials plays a vital role in improving the efficiency of hydrolysis hydrogen production and reducing energy consumption and cost. On the other hand, the preparation process of the oxygen evolution electrode also has a great influence on its oxygen evolution catalytic performance. Therefore, the research and development of new, efficient, cheap and easy-to-obtain o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M4/88
CPCH01M4/86H01M4/88Y02E60/50
Inventor 刘光李晋平王开放高旭升
Owner TAIYUAN UNIV OF TECH
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