Water electrolytic hydrogen production catalytic electrode of self-supporting metal-doped cobalt phosphide nano structure

A technology of metal doping and nanostructure, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., to achieve excellent catalytic activity and structural stability, broad application prospects, and the effect of efficient water electrolysis hydrogen production

Inactive Publication Date: 2016-08-10
成都玖奇新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, cobalt phosphide has become a research hotspot due to its good catalytic activity and stability (Tian et al., J.Am.Chem.Soc.2014, 136, 7587; Liu et al., Angew.Chem.Int. Ed.2014, 53, 6710; Popczun et al., Angew.Chem.Int.Ed.2014, 53, 5427; Yang et al., Nano Lett.2015, 15, 7616; Hellstern et al., Adv. Energy Mater .2016, 6, 1501758), but its activity needs to be further improved

Method used

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  • Water electrolytic hydrogen production catalytic electrode of self-supporting metal-doped cobalt phosphide nano structure
  • Water electrolytic hydrogen production catalytic electrode of self-supporting metal-doped cobalt phosphide nano structure
  • Water electrolytic hydrogen production catalytic electrode of self-supporting metal-doped cobalt phosphide nano structure

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Step 1: Add 20 mL of distilled water to the PTFE liner, add 0.876 g of cobalt nitrate hexahydrate, 0.1125 g of aluminum nitrate nonahydrate, 0.148 g of ammonium fluoride and 0.60 g of urea and stir until the solids are completely dissolved.

[0029] Step 2: Put the collector carbon fiber cloth into the reaction kettle lining in step 1, and seal the polytetrafluoroethylene lining into a stainless steel mold, place it in a constant temperature drying oven under closed conditions and react at 120°C 6h.

[0030] Step 3: After the reaction is completed, cool down to room temperature with the furnace, then take out the carbon fiber cloth, wash it, and then place it in a vacuum drying oven and dry it at 50°C for 24 hours to obtain a precursor.

[0031] Step 4: Put the precursor prepared in Step 3 in a tube furnace and add sodium hypophosphite, and react at 280 ° C for 2 h in an argon atmosphere to obtain a self-supporting aluminum-doped cobalt phosphide nanoarray (Al -CoP / CC,...

Embodiment 2

[0034] Step 1: Add 20 mL of distilled water to the PTFE liner, add 0.876 g of cobalt nitrate hexahydrate, 0.225 g of aluminum nitrate nonahydrate, 0.148 g of ammonium fluoride and 0.60 g of urea and stir until the solids are completely dissolved.

[0035] Step 2: Put the current collector titanium mesh into the reactor lining in step 1, seal the polytetrafluoroethylene lining into a stainless steel mold, place it in a constant temperature drying oven under closed conditions and react at 120°C 6h.

[0036] Step 3: After the reaction is completed, cool down to room temperature with the furnace, then take out the titanium mesh, wash it, and place the washed titanium mesh in a vacuum drying oven and vacuum-dry it at 40°C for 24 hours to obtain a precursor.

[0037] Step 4: Put the precursor prepared in Step 3 in a tube furnace and add potassium hypophosphite, and react at 300 °C for 3 h in an argon atmosphere to obtain a self-supporting aluminum-doped cobalt phosphide nanoarray (A...

Embodiment 3

[0040]Step 1: Add 20 mL of distilled water to the PTFE liner, add 0.291 g of cobalt nitrate hexahydrate, 0.08524 g of copper chloride dihydrate, 0.093 g of ammonium fluoride and 0.30 g of urea and stir until the solids are completely dissolved.

[0041] Step 2: Put the collector foam nickel into the reactor lining of step 1, and seal the polytetrafluoroethylene lining into a stainless steel mold, place it in a constant temperature drying oven under closed conditions and react at 120°C 6h.

[0042] Step 3: After the reaction is completed, cool down to room temperature with the furnace, then take out the nickel foam, wash it, and then place it in a vacuum drying oven and dry it at 40°C for 24 hours to obtain a precursor.

[0043] Step 4: Put the precursor prepared in Step 3 in a tube furnace and add hypophosphorous acid, and react at 280°C for 3 hours in an argon atmosphere to obtain a self-supporting copper-doped cobalt phosphide nanoarray (Cu- CoP / NF).

[0044] Step 5: Use 1...

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Abstract

The invention discloses a preparation method for a self-supporting metal-doped cobalt phosphide nano structure and an application of the self-supporting metal-doped cobalt phosphide nano structure as a catalytic electrode in water electrolytic hydrogen production, and belongs to the technical field of hydrogen energy and fuel cells. According to the invention, a metal element is firstly used as a doping agent for introducing cobalt phosphide, in-situ growth, on the surface of a collector, of the cobalt phosphide is realized, the catalytic activity and the structural stability are improved, the problem that a powder catalyst needs a polymer binder for being effectively fixed on the surface of the electrode is solved, and therefore, the self-supporting metal-doped cobalt phosphide nano structure is suitable for large-scale industrial hydrogen production application.

Description

technical field [0001] The invention belongs to the field of hydrogen energy and fuel cells, and more specifically relates to the preparation of metal-doped cobalt phosphide nanostructures supported by each as efficient and stable catalytic electrodes for water electrolysis to produce hydrogen. Background technique [0002] Hydrogen has attracted much attention due to its characteristics of storability, high efficiency and cleanliness. At present, the catalytic reforming of fossil fuels is the main way to produce hydrogen, but it aggravates the consumption of non-renewable energy and brings environmental pollution problems. Water electrolysis is an important means to achieve cheap hydrogen production on an industrial scale, but the biggest problem with this technology is the high power consumption, which makes the production cost high, and the high hydrogen evolution overpotential is one of the important reasons. Therefore, it is of great significance to develop high-effici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B11/06
CPCC25B1/04C25B11/091Y02E60/36
Inventor 孙旭平罗永岚阳海
Owner 成都玖奇新材料科技有限公司
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