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Iron oxide micron sheet self-supporting electrode and synthesis method thereof

A self-supporting electrode, iron oxide technology, applied in electrodes, electrolysis process, electrolysis components, etc., can solve the problems of complex preparation process, difficult to popularize in a large area, and high price of precious metals, to simplify experimental steps, save material consumption, and reduce electricity consumption. good chemical activity

Inactive Publication Date: 2019-06-21
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, in renewable energy, due to the abundance of water resources in the world, hydrogen production by water splitting has become the first choice for renewable energy, and the choice of electrode materials determines the efficiency of water splitting. At this stage, the electrode materials with the highest efficiency are noble metals. , but due to the high price of precious metals, it is difficult to popularize in a large area, so a new electrode material is needed at this stage to meet the large-scale production of hydrogen. The existing technology uses a hydrothermal method to attach the compound to the surface of the supporting electrode. For the preparation of self-supporting electrodes in the prior art, reactants and supporting electrodes are required at the same time, resulting in complicated preparation process and high cost of raw materials

Method used

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  • Iron oxide micron sheet self-supporting electrode and synthesis method thereof
  • Iron oxide micron sheet self-supporting electrode and synthesis method thereof
  • Iron oxide micron sheet self-supporting electrode and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] S1. Cut the foam iron to a size of 1×5cm; then clean the cut foam iron, first soak it in acetone for 10 minutes, then soak it in 3moL / L dilute hydrochloric acid for 20 seconds, and then wash it with ultrapure water and Rinse with ethanol three times alternately, and then put into deionized water for later use.

[0024] S2. Weigh 0.282 g of urea and dissolve it in 25 ml of ultrapure water, and stir to obtain a transparent and uniform urea aqueous solution.

[0025] S3, pour the stirred urea aqueous solution into a high-temperature hydrothermal kettle with a polytetrafluoroethylene liner, put the foam iron pretreated in step S1 into the polytetrafluoroethylene liner and seal it, and put it in an oven for reaction. The reaction time was 12 hours, and the temperature was 120°C.

[0026] S4. After the reaction is completed, the reaction kettle is cooled to room temperature, and the obtained product is cross-treated with ethanol and ultrapure water, and subjected to vacuum ...

Embodiment 2

[0028] S1. Cut the foam iron to a size of 1×5cm, and then clean the cut foam iron. First, soak it in acetone for 10 minutes, then soak it in 3moL / L dilute hydrochloric acid for 30 seconds, and then wash it with ultrapure water and Rinse with ethanol three times alternately, and then put into deionized water for later use.

[0029] S2. Weigh 0.47 g of urea and dissolve it in 25 ml of ultrapure water, and stir to obtain a transparent and uniform urea aqueous solution.

[0030] S3, pour the stirred urea aqueous solution into a high-temperature hydrothermal kettle with a polytetrafluoroethylene liner, put the foam iron pretreated in step S1 into the polytetrafluoroethylene liner and seal it, and put it in an oven for Reaction, the reaction time is 14 hours, and the temperature is 140°C.

[0031] S4. After the reaction is completed, the reaction kettle is cooled to room temperature, and the obtained product is cross-treated with ethanol and ultrapure water, and vacuum-dried. The v...

Embodiment 3

[0033] S1. Cut the foam iron to a size of 1×5cm, clean the cut foam iron, first soak it in acetone for 10 minutes, then soak it in 3moL / L dilute hydrochloric acid for 30 seconds, then wash it with ultrapure water and ethanol Rinse three times alternately, and then put it in ionized water for later use.

[0034] S2. Weigh 0.376 g of urea and dissolve it in 25 ml of ultrapure water, and stir to obtain a transparent and uniform urea aqueous solution.

[0035] S3, pour the stirred urea aqueous solution into a high-temperature hydrothermal kettle with a polytetrafluoroethylene liner, put the foam iron pretreated in step S1 into the polytetrafluoroethylene liner and seal it, and put it in an oven for reaction. The reaction time was 12 hours, and the temperature was 120°C.

[0036] S4. After the reaction is completed, the reaction kettle is cooled to room temperature, and the obtained product is cross-treated with ethanol and ultrapure water, and vacuum-dried. The vacuum-dried trea...

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Abstract

The invention discloses an iron oxide micron sheet self-supporting electrode and a synthesis method thereof, and belongs to the technical field of self-supporting electrode preparation. The self-supporting electrode is foam iron, iron oxide with micron sheet morphology is uniformly grown on the surface of the foam iron; the synthesis method of the iron oxide micron sheet self-supporting electrodecomprises the following steps: soaking foam iron into a urea aqueous solution, performing hydrothermal reaction to obtain the iron oxide micron sheet self-supporting electrode. The foam iron is used as a reactant to react with the urea solution at a specific temperature, an iron oxide catalyst of the micron sheet structure uniformly grown on the surface of the foam iron is synthesized on the surface of the self-supporting electrode foam iron, and the iron oxide catalyst is good in electrochemical activity. The foam iron can be used as the supporting electrode, and also can be used as the reactant to participate into the reaction, the cost of the supporting electrode is reduced, the material dosage is saved, and the experimental step is simplified.

Description

technical field [0001] The invention relates to the technical field of self-supporting electrode preparation, in particular to an iron oxide micro-sheet self-supporting electrode and a synthesis method thereof. Background technique [0002] In recent years, in renewable energy, due to the abundance of water resources in the world, hydrogen production by water splitting has become the first choice for renewable energy, and the choice of electrode materials determines the efficiency of water splitting. At this stage, the electrode materials with the highest efficiency are noble metals. , but due to the high price of precious metals, it is difficult to popularize in a large area, so a new electrode material is needed at this stage to meet the large-scale production of hydrogen. The existing technology uses a hydrothermal method to attach the compound to the surface of the supporting electrode. For the preparation of self-supporting electrodes in the prior art, reactants and sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/04C25B1/04
CPCY02E60/36
Inventor 冯亮亮冯李杜盈盈黄剑锋曹丽云
Owner SHAANXI UNIV OF SCI & TECH
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