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Preparation method of a sheet-shaped V3S4 electrocatalyst and an application thereof of electrocatalytic performance

A V3S4, electrocatalyst technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of limited global resources and difficulty in meeting energy demand, and achieve the effect of uniform chemical composition, low cost, high purity and crystallinity

Active Publication Date: 2019-05-03
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most efficient catalyst for hydrogen production is platinum, but its global resources are limited, making it difficult to meet energy demand

Method used

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  • Preparation method of a sheet-shaped V3S4 electrocatalyst and an application thereof of electrocatalytic performance
  • Preparation method of a sheet-shaped V3S4 electrocatalyst and an application thereof of electrocatalytic performance
  • Preparation method of a sheet-shaped V3S4 electrocatalyst and an application thereof of electrocatalytic performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Step 1: Weigh 4 mmol of oxalic acid and dissolve it in 40 mL of deionized water, add two drops of ammonia water, and stir magnetically for 30 minutes to obtain solution A; weigh 2 mmol of V 2 o 5 Dissolve in solution A, stir magnetically for 30 min to obtain solution B.

[0025] Step 2: Pour the prepared solution B into the reaction polytetrafluoroethylene lining, the filling ratio of the reactor is 80%, and put the inner lining into the outer kettle, and place it in the oven after fixing it, and react The condition is to keep warm at 180°C for 24h.

[0026] Step 3: After the hydrothermal reaction is completed, the hydrothermal kettle is naturally cooled to room temperature, and the reaction liquid is poured out and washed 3 times with deionized water and absolute ethanol. After suction filtration, the sample is collected and dried under vacuum at 60°C for 24 hours to obtain VO 2 nanomaterials.

[0027] Step 4: Control the molar ratio of vanadium oxide and thioaceta...

Embodiment 2

[0033] Step 1: Weigh 5mmol of oxalic acid and dissolve it in 40mL of deethylene glycol, add two drops of ammonia water dropwise, and stir magnetically for 30min to obtain solution A; weigh 2mmol of V 2 o 5 Dissolve in solution A, stir magnetically for 30 min to obtain solution B.

[0034] Step 2: Pour the prepared solution B into the reaction polytetrafluoroethylene lining, the filling ratio of the reactor is 80%, and put the inner lining into the outer kettle, and place it in the oven after fixing it, and react The condition is to keep warm at 200°C for 24h.

[0035] Step 3: After the hydrothermal reaction is completed, the hydrothermal kettle is naturally cooled to room temperature, and the reaction liquid is poured out and washed 3 times with deionized water and absolute ethanol. After suction filtration, the samples were collected and dried under vacuum at 80° C. for 12 hours to obtain VO2 nanomaterials.

[0036] Step 4: Control the molar ratio of vanadium oxide and sub...

Embodiment 3

[0041] Step 1: Weigh 5 mmol of oxalic acid and dissolve it in 40 mL of deionized water, add four drops of ammonia water, and stir magnetically for 30 minutes to obtain solution A; weigh 2 mmol of V 2 o 5 Dissolve in solution A, stir magnetically for 30 min to obtain solution B.

[0042] Step 2: Pour the prepared solution B into the reaction polytetrafluoroethylene lining, the filling ratio of the reactor is 80%, and put the inner lining into the outer kettle, and place it in the oven after fixing it, and react The condition is to keep warm at 180°C for 24h.

[0043] Step 3: After the hydrothermal reaction is completed, the hydrothermal kettle is naturally cooled to room temperature, and the reaction liquid is poured out and washed 3 times with deionized water and absolute ethanol. After suction filtration, the sample is collected and dried under vacuum at 40°C for 24 hours to obtain VO 2 nanomaterials.

[0044] Step 4: Control the molar ratio of vanadium oxide and thioacet...

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Abstract

The invention discloses a preparation method of a sheet-shaped V3S4 electrocatalyst and an application thereof as an electrocatalytic cracking aqueous hydrogen production catalyst. As a layered material, vanadium disulfide has attracted more and more attention in recent years. However, there are few reports about V3S4. The V3S4 hydrogen production electrocatalyst with sheet shape, uniform chemicalcomposition of material and high electrocatalytic activity and stability in all PH electrolyte is obtained by a hydrothermal-calcination two-step method.

Description

technical field [0001] The invention relates to the technical field of nano powder preparation, in particular to a flake V 3 S 4 Preparation method of electrocatalyst. Background technique [0002] Since the 1970s, molecular hydrogen, a hydrocarbon energy carrier, has been a research hotspot because of its many advantages: 2 In comparison, it has a large energy density per unit mass, and the cleaning by-product water is abundant. On the other hand, hydrogen is usually present in compounds from which we can isolate hydrogen. A widely used separation process is steam reforming, but it relies on fossil fuels and produces CO 2 . in clean, renewable and CO-free 2 Among the resulting water treatment technologies, water splitting to produce hydrogen is one of the most promising processes. The most efficient catalyst for hydrogen production is platinum, but its global resource is limited, making it difficult to meet energy demand. Therefore, strong requirements are placed on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/06C25B1/04
CPCY02E60/36
Inventor 曹丽云王琳琳冯亮亮黄剑锋王潇杜盈盈徐瑞何丹阳
Owner SHAANXI UNIV OF SCI & TECH
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