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

An anode material and water electrolysis technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems that are not suitable 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: 2015-12-09
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 for hydrogen production by water electrolysis and preparation method of three-dimensional anode material
  • Three-dimensional anode material for hydrogen production by water electrolysis and preparation method of three-dimensional anode material
  • Three-dimensional anode material for hydrogen production by water electrolysis and preparation method of three-dimensional anode material

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Experimental program
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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 Applications(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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