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Ferro-nickel hydroxide/ferro-nickel alloy loaded wood-based electrocatalyst, preparation method thereof and water electrolysis hydrogen production catalyst

A technology of iron hydroxide and electrocatalyst, applied in the direction of electrolysis components, electrolysis process, electrodes, etc., can solve the problems of large accumulation, non-renewable, uneven dispersion of active substances, etc., and achieve low cost, simple preparation process and ingenious design Effect

Active Publication Date: 2021-08-06
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the preparation process of the above-mentioned transition metal-based catalysts, compounding active substances with conductive substrates (graphene, carbon fiber, carbon nanotubes, etc.) is a conventional means to improve the catalytic activity of active substances, but the simple compound still has uneven dispersion of active substances. , a large amount of accumulation and other problems, and the above-mentioned general-purpose conductive substrates are derived from petrochemical products and are not renewable

Method used

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  • Ferro-nickel hydroxide/ferro-nickel alloy loaded wood-based electrocatalyst, preparation method thereof and water electrolysis hydrogen production catalyst
  • Ferro-nickel hydroxide/ferro-nickel alloy loaded wood-based electrocatalyst, preparation method thereof and water electrolysis hydrogen production catalyst
  • Ferro-nickel hydroxide/ferro-nickel alloy loaded wood-based electrocatalyst, preparation method thereof and water electrolysis hydrogen production catalyst

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Effect test

Embodiment 1

[0039] A wood-based electrocatalyst loaded with nickel-iron hydroxide / nickel-iron alloy. The electrocatalyst uses carbonized wood with a three-dimensional hierarchical porous structure and vertically oriented channels as a charcoal skeleton, and the charcoal skeleton is uniformly and firmly loaded with nickel-iron hydroxide. / Nickel-iron alloy heterojunction (nickel-iron alloy as the bottom layer and nickel-iron hydroxide as the surface layer). The specific surface area of ​​the wood-based electrocatalyst is 100-200m 2 / g, the size of the active material is 100-150nm, and the loading rate of the active material is 0.2-10%.

[0040] The preparation method of the wood-based electrocatalyst of the above-mentioned loaded nickel-iron hydroxide / nickel-iron alloy comprises the following steps:

[0041] (1) Cut a large piece of poplar wood so that its size is 2.0cm×0.8cm×1mm (length×width×height), and weigh 0.05g.

[0042] (2) Add the wood chips in step (1) to the ferronickel nitra...

Embodiment 2

[0049] A wood-based electrocatalyst loaded with nickel-iron hydroxide / nickel-iron alloy. The electrocatalyst uses carbonized wood with a three-dimensional hierarchical porous structure and vertically oriented channels as a charcoal skeleton, and the charcoal skeleton is uniformly and firmly loaded with nickel-iron hydroxide. / nickel-iron alloy heterojunction.

[0050] The preparation method of the wood-based electrocatalyst of the above-mentioned loaded nickel-iron hydroxide / nickel-iron alloy comprises the following steps:

[0051] (1) Cut a large piece of poplar wood so that its size is 2.0cm×0.8cm×1mm (length×width×height), and weigh 0.05g.

[0052] (2) Add the wood chips in step (1) to the ferronickel nitrate solution (a total of 0.400g of nickel nitrate hexahydrate and ferric nitrate nonahydrate, the molar ratio of nickel ions to iron ions in the solution is 1.25:1), and put Vacuum impregnation was carried out in a vacuum drying oven, and the impregnation temperature was...

Embodiment 3

[0058] A wood-based electrocatalyst loaded with nickel-iron hydroxide / nickel-iron alloy. The electrocatalyst uses carbonized wood with a three-dimensional hierarchical porous structure and vertically oriented channels as a charcoal skeleton, and the charcoal skeleton is uniformly and firmly loaded with nickel-iron hydroxide. / nickel-iron alloy heterojunction.

[0059] The preparation method of the wood-based electrocatalyst of the above-mentioned loaded nickel-iron hydroxide / nickel-iron alloy comprises the following steps:

[0060] (1) Cut a large piece of poplar wood so that its size is 2.0cm×0.8cm×1mm (length×width×height), and weigh 0.05g.

[0061] (2) Add the wood chips in step (1) to the ferronickel nitrate solution (a total of 0.400 g of nickel nitrate hexahydrate and ferric nitrate nonahydrate, the molar ratio of nickel ions to iron ions in the solution is 0.5:1), and put Vacuum impregnation was carried out in a vacuum drying oven, and the impregnation temperature was...

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Abstract

The invention discloses a ferro-nickel hydroxide / ferro-nickel alloy loaded wood-based electrocatalyst, which comprises a charcoal skeleton with a three-dimensional porous structure and an active substance loaded on the charcoal skeleton, the active substance comprises a ferro-nickel hydroxide / ferro-nickel alloy heterojunction taking ferro-nickel alloy as a bottom layer and ferro-nickel hydroxide as a surface layer. The invention also provides a preparation method of the ferro-nickel hydroxide / ferro-nickel alloy loaded wood-based electrocatalyst and a water electrolysis hydrogen production catalyst. The ferro-nickel hydroxide / ferro-nickel alloy loaded wood-based electrocatalyst has the advantages of high catalytic efficiency, good stability, simple process and the like.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a non-noble metal electrocatalyst, a preparation method thereof, and a hydrogen production catalyst by electrolyzing water. Background technique [0002] With the rapid development of society, traditional fossil fuel resources are increasingly depleted. At the moment when human energy demand is increasing and the environmental situation is not optimistic, the development of green and renewable energy is imminent. Compared with solar energy, wind energy, etc., hydrogen energy has broad application prospects due to its advantages of stable power generation, high combustion calorific value, and no pollution. Hydrogen production by electrolysis of water is regarded as the most promising hydrogen production method due to its advantages of high yield and high product purity. [0003] Hydrogen production by electrolysis of water includes two half-reactions of HER and OER. Among th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B11/091C25B11/065C25B11/054
CPCC25B1/04Y02E60/36Y02P20/133
Inventor 卿彦吴义强许瀚宋美玲罗莎田翠花
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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