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A nano-array of iron oxyhydroxide and its preparation method and application

An iron oxyhydroxide and nanoarray technology, which is applied to electrolysis components, electrodes, electrolysis processes, etc., can solve the problems of poor oxidation resistance, poor corrosion resistance, high cost of carbon paper and carbon cloth, complicated processing process, etc., and achieve low cost. , the effect of excellent electrochemical catalytic performance and simple preparation process

Active Publication Date: 2021-01-08
JIANGHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cost of carbon paper and carbon cloth is high, the processing process is complicated, and the electrical conductivity is poor, and the anti-oxidation and corrosion resistance are poor.

Method used

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  • A nano-array of iron oxyhydroxide and its preparation method and application
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  • A nano-array of iron oxyhydroxide and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Weigh 9mmol ferric chloride (concentration: 0.3mol / L) and 6mmol sodium nitrate and dissolve them in 60mL deionized water. After the dissolution is complete, a yellow solution is obtained. Ultrasonic cleaning with L hydrochloric acid and deionized water, then pour the mixed solution of ferric chloride and sodium nitrate into a 100mL hydrothermal reaction kettle, and immerse the cleaned stainless steel mesh in the solution, and then put the reaction kettle into a blast oven Inside, heat at 160° C. for 1 hour, take out the stainless steel mesh and dry it at low temperature to obtain the iron oxyhydroxide nano-array supported by the stainless steel mesh. figure 1 It is the SEM image of the iron oxyhydroxide nanoparticles loaded on the stainless steel mesh prepared in Example 1.

Embodiment 2

[0043] Weigh 9mmol ferric chloride (concentration: 0.1mol / L) and 6mmol sodium nitrate and dissolve them in 60mL deionized water. After the dissolution is complete, a yellow solution is obtained. Ultrasonic cleaning with L hydrochloric acid and deionized water, then pour the mixed solution of ferric chloride and sodium nitrate into a 100mL hydrothermal reaction kettle, and immerse the cleaned stainless steel mesh in the solution, and then put the reaction kettle into a blast oven Inside, heat at 40° C. for 24 hours, take out the stainless steel mesh and dry it at low temperature to obtain the stainless steel mesh-supported iron oxyhydroxide nano-array.

Embodiment 3

[0045] Weigh 9mmol (concentration: 0.05mol / L) ferric chloride and 6mmol sodium nitrate and dissolve them in 60mL deionized water. After the dissolution is complete, a yellow solution is obtained. Ultrasonic cleaning with L hydrochloric acid and deionized water, then pour the mixed solution of ferric chloride and sodium nitrate into a 100mL hydrothermal reaction kettle, and immerse the cleaned stainless steel mesh in the solution, and then put the reaction kettle into a blast oven Inside, heat at 80° C. for 12 hours, take out the stainless steel mesh and dry it at low temperature to obtain the iron oxyhydroxide nano-array supported by the stainless steel mesh. figure 2 It is the SEM image of the iron oxyhydroxide nano-array loaded on the stainless steel mesh prepared in Example 3.

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Abstract

The invention discloses a hydroxyl oxidize iron nano array, and a preparation method and application thereof. The preparation method comprises the following steps: (1) weighing an iron salt and sodiumnitrate, dissolving the iron salt and sodium nitrate in water, and conducting stirring to obtain a uniformly mixed solution; and (2) conducting a hydrothermal reaction on the solution and a stainlesssteel mesh to obtain a stainless steel mesh-supported hydroxyl oxidize iron nano-array. According to the present invention, by loading hydroxyl oxidize iron nanorods to the stainless steel mesh, thesynergic effect of the hydroxyl oxidize iron nanorods and the stainless steel mesh is exerted, and an ordered electrode with excellent water electrolysis catalytic performance and good stability is prepared. The electric conductive property of hydroxyl oxidize iron is further optimized through doping modification, so that the water electrolysis catalytic activity and stability of the electrode areimproved.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to an iron oxyhydroxide nano-array, a preparation method and application thereof. Background technique [0002] Fuel cell is an energy conversion device that directly converts chemical energy into electrical energy. It has the advantages of high conversion efficiency and environmental friendliness. It is considered to be an effective way to solve future energy problems. At present, high-power fuel cells mainly use hydrogen as fuel, so the development of hydrogen production and hydrogen storage technologies directly affects the commercialization process of fuel cells. Hydrogen production by water electrolysis is a device that uses water as a raw material to produce hydrogen by electrochemical methods. It has the advantages of cleanliness and high efficiency. In addition, it is just the opposite of the process of fuel cells. The two complement each other and c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/077C25B11/073C25B1/04
CPCC25B1/04C25B11/04Y02E60/36
Inventor 鲁望婷黄颖孙依妮梁思雨李雯慧魏锋
Owner JIANGHAN UNIVERSITY
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