Self-supporting water electrolysis material with dual carbon sandwich structure and preparation method thereof

A sandwich structure, self-supporting technology, applied in the direction of electrolysis process, electrolysis components, chemical instruments and methods, etc., to achieve the effect of good conductivity, excellent activity, and wide range of applications

Pending Publication Date: 2020-03-27
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, how to stably combine these two materials and expose the active edge active sites of TMDs as much as possible has become a difficulty and challenge in related research.

Method used

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  • Self-supporting water electrolysis material with dual carbon sandwich structure and preparation method thereof
  • Self-supporting water electrolysis material with dual carbon sandwich structure and preparation method thereof
  • Self-supporting water electrolysis material with dual carbon sandwich structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Select carbon paper as the substrate, place it in ultrapure water and ethanol for 60 minutes, and then place it in a vacuum oven to dry at 80°C for 12 hours.

[0028] 2. Dissolve 1.7mg of ammonium molybdate and 7mg of thiourea in 2mL of water, then add 50mg of silicon dioxide (100nm, 30wt.%), stir and mix well, and then sonicate for 60min.

[0029] 3. Take the mixed solution in step 2 and drop-coat it directly on the carbon paper, so that the precursor is evenly loaded on the carbon paper. After drying at room temperature, place it in a vacuum dryer and dry it for 10 hours at a drying temperature of 80°C; Chemical vapor deposition method, the obtained product was transferred to a tube furnace, under an argon atmosphere, the temperature was programmed to rise to 400°C at a rate of 10°C / min, the gas flow rate was 80mL / min, and then kept for 240min.

[0030] 4. Seal the product obtained in step 3 and place it in 50mL hydrofluoric acid solution (10wt.%) for 120min. After...

Embodiment 2

[0033] 1. Select carbon cloth as the substrate, place it in ultrapure water and ethanol for ultrasonic cleaning for 60 minutes, and then dry it in a vacuum oven at 80°C for 12 hours.

[0034] 2. Dissolve 1.7mg of ammonium molybdate and 7mg of thiourea in 2mL of water, then add 50mg of silicon dioxide (100nm, 30wt.%), stir and mix, and then sonicate for 120min.

[0035] 3. Take the mixed solution in step 2 and drop-coat it directly on the carbon cloth, so that the precursor is evenly loaded on the carbon cloth. After drying at room temperature, place it in a vacuum dryer for 10 hours at a drying temperature of 60°C; Chemical vapor deposition method, the obtained product was transferred to a tube furnace, under an argon atmosphere, the temperature was programmed to rise to 400°C at a rate of 10°C / min, the gas flow rate was 80mL / min, and then kept for 240min.

[0036]4. Seal the product obtained in step 3 and place it in 50mL hydrofluoric acid solution (10wt.%) for 120min. After ...

Embodiment 3

[0039] 1. Select carbon felt as the substrate, place it in ultrapure water and ethanol in order to ultrasonically clean it for 60 minutes, and then place it in a vacuum oven at 80°C for 12 hours.

[0040] 2. Dissolve 1.7mg of ammonium molybdate and 7mg of thiourea in 2mL of water, then add 50mg of silicon dioxide (100nm, 30wt.%), stir and mix well, and then sonicate for 80min.

[0041] 3. Take the mixed solution in step 2 and drop-coat it directly on the carbon felt, so that the precursor is evenly loaded on the carbon felt. After drying at room temperature, place it in a vacuum dryer for 10 hours at a drying temperature of 100°C; Chemical vapor deposition method, the obtained product was transferred to a tube furnace, under an argon atmosphere, the temperature was programmed to rise to 400°C at a rate of 10°C / min, the gas flow rate was 80mL / min, and then kept for 240min.

[0042] 4. Seal the product obtained in step 3 and place it in 50mL hydrofluoric acid solution (10wt.%) f...

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Abstract

The invention discloses a self-supporting water electrolysis material with a dual carbon sandwich structure and a preparation method thereof, and relates to the field of nano material preparation. Thewater electrolysis material comprises an inner carbon layer, a sandwich layer, and an outer carbon layer. The inner carbon layer is made of carbon fibers. The outer carbon layer is made of conductivecarbon. The sandwich layer is transition metal chalcogenide having a three dimensional porous structure. The preparation method comprises following steps: taking a carbon fiber material as a substrate, washing the substrate in a mixed solution of ultrapure water and ethanol, drying the substrate to obtain the inner carbon layer; building a template with a porous structure on the surface of the substrate of the inner carbon layer; in-situ growing TMDs on the template to form self-supporting growing three dimensional porous structure TMDs, transferring TMDs to a tubular furnace, raising the temperature to 200 to 800 DEG C in an inert atmosphere by program, introducing a carbon containing precursor, maintaining the temperature for 5 to 240 minutes, and forming a layer of conductive carbon onthe surface of TMDs. The provided water electrolysis material has a high specific surface area and high catalytic activity. The preparation method is easy to operate, and can be used to build other two dimensional material structures.

Description

technical field [0001] The invention relates to the preparation of nanometer materials, in particular to a self-supporting double-carbon sandwich structure electrolyzed water material and a preparation method thereof. Background technique [0002] Since the 21st century, the global economy has developed rapidly, but it is accompanied by an increase in energy consumption. At present, people still rely heavily on non-renewable fossil energy, but the excessive use of fossil fuel will inevitably cause a series of energy crisis and environmental pollution. Therefore, developing a clean new energy to replace traditional fossil energy has become a hot research direction today. [0003] The conversion of hydrogen into storable and transportable hydrogen energy by electrolysis of water is considered to be one of the most effective ways to solve today's environmental pollution and energy crisis (Dresselhaus, M.S. & Thomas, I.L. Nature 414, 332-337(2001).). At present, the commercial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J35/06B01J35/04B01J35/10B01J27/051B01J27/047B01J27/04B01J27/043C25B1/04C25B11/06
CPCB01J27/051B01J27/047B01J27/04B01J27/043C25B1/04C25B11/091B01J35/33B01J35/56B01J35/58B01J35/651Y02E60/36
Inventor 邓德会郑智龙胡景庭田中群
Owner XIAMEN UNIV
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