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A preparation method of Co/N/C catalyst for hydrogen precipitation reaction

A catalyst and reaction technology, applied in the direction of electrical components, battery electrodes, circuits, etc., can solve environmental pollution and other problems, and achieve the effect of uniform distribution and good electrocatalytic performance

Inactive Publication Date: 2018-12-28
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, hydrogen-oxygen fuel cells are developing more rapidly, but the current source of hydrogen still mainly relies on reformed petroleum gas, which has serious environmental pollution.
Hydrogen production by electrolysis of water is also a hot topic in the field of hydrogen evolution, but HER catalysts are still the biggest bottleneck restricting the efficiency of hydrogen production by electrolysis of water

Method used

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  • A preparation method of Co/N/C catalyst for hydrogen precipitation reaction
  • A preparation method of Co/N/C catalyst for hydrogen precipitation reaction
  • A preparation method of Co/N/C catalyst for hydrogen precipitation reaction

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Effect test

Embodiment 1

[0028] In this embodiment, the Co / N / C HER catalyst is realized according to the following steps:

[0029] (1) Configuration of solution (1): Weigh 0.6g of cobalt acetate tetrahydrate and dissolve it in 10g of N,N-dimethylformamide solution, then transfer the above mixed solution to a sealed beaker and place it under magnetic force Stir on the stirrer, the stirring rate is 500rpm, the stirring temperature is 40°C, and the liquid in the beaker is stirred to a uniform purple liquid, and the solution (1) is obtained.

[0030] (2) Configuration of solution (2): Dissolve 1.06g of polyacrylonitrile in the solution (1) prepared in step (1), then transfer the above mixed solution to a sealed beaker, and stir on a magnetic stirrer , the stirring rate is 500rpm, the stirring temperature is 45°C, and the liquid in the beaker is stirred until it becomes a uniform purple liquid, and then the solution (2) is prepared.

[0031] (3) Spinning: transfer the solution (2) prepared in step (2) to ...

Embodiment 2

[0035] In this embodiment, the Co / N / C HER catalyst is realized according to the following steps:

[0036] (1) Configuration of solution (1): Weigh 0.9 mg of cobalt acetate tetrahydrate and dissolve it in 10 g of N,N-dimethylformamide solution, then transfer the above mixed solution to a sealed beaker and place it in a magnetic Stir on the stirrer, the stirring rate is 600rpm, the stirring temperature is 45°C, and the liquid in the beaker is stirred until it becomes a uniform purple liquid, and then the solution (1) is prepared.

[0037] (2) Configuration of solution (2): Dissolve 1.417g of polyacrylonitrile in the solution (1) prepared in step (1), then transfer the above mixed solution to a sealed beaker, and stir on a magnetic stirrer , the stirring rate is 600rpm, the stirring temperature is 50°C, and the liquid in the beaker is stirred until it becomes a uniform purple liquid, and then the solution (2) is prepared.

[0038] (3) Spinning: transfer the solution (2) prepared...

Embodiment 3

[0042] In this embodiment, the Co / N / C HER catalyst is realized according to the following steps:

[0043] (1) Configuration of solution (1): Weigh 0.2g of cobalt acetate tetrahydrate and dissolve it in 10g of N,N-dimethylformamide solution, then transfer the above mixed solution to a sealed beaker and place it under magnetic force Stir on the stirrer, the stirring rate is 450rpm, the stirring temperature is 35°C, and the liquid in the beaker is stirred until it becomes a uniform purple liquid, and the solution (1) is obtained.

[0044] (2) Configuration of solution (2): Dissolve 0.816g of polyacrylonitrile in the solution (1) prepared in step (1), then transfer the above mixed solution to a sealed beaker, and stir on a magnetic stirrer , the stirring rate is 400rpm, the stirring temperature is 40°C, and the liquid in the beaker is stirred until it becomes a uniform purple liquid, and then the solution (2) is prepared.

[0045](3) Spinning: transfer the solution (2) prepared i...

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Abstract

The invention belongs to the technical field of fuel cell catalyst preparation, and discloses a preparation method of Co / N / C catalyst for hydrogen precipitation reaction. Cobalt acetate tetrahydrate and polyacrylonitrile are dissolved in an N, N-dimethylformamide solvent and carbon nanowires containing cobalt acetate are prepared by electrospinning, and then the catalyst is prepared by a muffle furnace and a tube furnace through program-controlled temperature rise. The catalyst prepared by the invention has good morphology, uniform nanowire diameter and high purity, and has good catalysis in HER chemical reaction.

Description

technical field [0001] The invention belongs to the field of fuel cell catalysts, in particular to a method for preparing a Co / N / C catalyst for hydrogen evolution reaction (HER). Background technique [0002] Fuel cells can directly convert the chemical energy of fuel into electrical energy, and are praised by Time Magazine as "the most important new energy technology in the 21st century". At present, hydrogen-oxygen fuel cells are developing more rapidly. However, the source of hydrogen is still mainly dependent on reformed petroleum gas, which causes serious pollution to the environment. Hydrogen production by electrolysis of water is also a hot topic in the field of hydrogen evolution, but HER catalysts are still the biggest bottleneck restricting the efficiency of hydrogen production by electrolysis of water. [0003] Therefore, the preparation of efficient hydrogen evolution catalysts has become a consensus in the academic community. At present, platinum-based nanomat...

Claims

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Application Information

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IPC IPC(8): H01M4/90
CPCH01M4/90H01M4/9041H01M4/9083Y02E60/50
Inventor 王匀饶鹏许桢英李瑞涛李富柱王茂森於伟杰俞乐马跃龙谭中锐范海洋陆素雯
Owner JIANGSU UNIV
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