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Preparation method and application of a nickel phosphide-ruthenium phosphide/nickel foam three-dimensional self-supporting electrode material

A self-supporting electrode, nickel foam technology, applied in electrodes, electrolysis components, electrolysis process, etc., can solve problems such as increasing the cost of hydrogen production, restricting the large-scale application of hydrogen production technology from electrolyzed water, etc. performance, and the effect of enhancing electrocatalytic stability

Active Publication Date: 2022-05-03
JINING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Today, one of the main challenges for effective large-scale electrolysis of water is the efficient electrocatalysts (such as Pt / C, RuO 2 , IrO 2 etc.) are all expensive rare metal catalysts, which greatly increases the cost of hydrogen production and greatly limits the large-scale application of electrolysis of water hydrogen production technology

Method used

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  • Preparation method and application of a nickel phosphide-ruthenium phosphide/nickel foam three-dimensional self-supporting electrode material
  • Preparation method and application of a nickel phosphide-ruthenium phosphide/nickel foam three-dimensional self-supporting electrode material
  • Preparation method and application of a nickel phosphide-ruthenium phosphide/nickel foam three-dimensional self-supporting electrode material

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Effect test

Embodiment 1

[0021] A kind of preparation method of nickel phosphide-ruthenium phosphide / foam nickel three-dimensional self-supporting electrode material of the present invention comprises the following steps:

[0022] 1) Preparation of nickel foam self-supporting nickel ruthenium layered double hydroxide (NiRu LDH): 2mmol nickel nitrate hexahydrate, 0.5mmol ruthenium trichloride, 0.5mmol sodium lauryl sulfate and 16.7mmol urea were dissolved in In 40mL water / ethylene glycol mixed solution (volume ratio 1:3), stir to obtain A solution, transfer it to a 50mL reaction kettle; immerse foamed nickel (length 2cm, thickness 150nm) in it; keep at 100°C for 12h, The nickel foam was washed five times with methanol and ultrapure water respectively, and vacuum-dried at 50°C to obtain sample I, which was the self-supporting nickel-ruthenium layered double hydroxide (NiRu LDH) of nickel foam;

[0023] 2) Preparation of nickel phosphide-ruthenium phosphide / nickel foam three-dimensional self-supporting e...

Embodiment 2

[0028] A kind of preparation method of nickel phosphide-ruthenium phosphide / foam nickel three-dimensional self-supporting electrode material of the present invention comprises the following steps:

[0029] 1) Preparation of nickel foam self-supporting nickel-ruthenium layered double hydroxide (NiRu LDH): 3 mmol of nickel nitrate hexahydrate, 0.75 mmol of ruthenium trichloride, 0.75 mmol of sodium lauryl sulfate and 25 mmol of urea were dissolved in 60 mL Water / ethylene glycol mixed solution (volume ratio 1:3), stir to obtain A solution, transfer it to a 100mL reactor; immerse foamed nickel (5cm in length, 150nm in thickness) in it; keep at 150°C for 12h, and place The nickel foam was washed five times with methanol and ultrapure water respectively, and vacuum-dried at 80°C to obtain sample I, which was the self-supporting nickel-ruthenium layered double hydroxide (NiRu LDH) of nickel foam;

[0030] 2) Preparation of nickel phosphide-ruthenium phosphide / nickel foam three-dimens...

Embodiment 3

[0032] A kind of preparation method of nickel phosphide-ruthenium phosphide / foam nickel three-dimensional self-supporting electrode material of the present invention comprises the following steps:

[0033] 1) Preparation of nickel foam self-supporting nickel ruthenium layered double hydroxide (NiRu LDH): 2.5mmol nickel nitrate hexahydrate, 0.6mmol ruthenium trichloride, 0.6mmol sodium lauryl sulfate and 20mmol urea were dissolved in In 50mL water / ethylene glycol mixed solution (volume ratio 1:3), stir to obtain A solution, transfer it to a 100mL reaction kettle; immerse foamed nickel (length 3cm, thickness 150nm) in it; keep at 120°C for 12h, Wash the nickel foam with methanol and ultrapure water for 5 times, and dry it in vacuum at 65°C to obtain sample I, which is the self-supporting nickel-ruthenium layered double hydroxide (NiRu LDH) of nickel foam;

[0034] 2) Preparation of nickel phosphide-ruthenium phosphide / nickel foam three-dimensional self-supporting electrode mater...

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Abstract

The invention belongs to the technical field of catalyst preparation, and specifically relates to a preparation method and application of a nickel phosphide-ruthenium phosphide / foamed nickel three-dimensional self-supporting electrode material, comprising the following steps: 1) preparing a foamed nickel self-supporting nickel-ruthenium layered bilayer Metal hydroxide; 2) Preparation of nickel phosphide-ruthenium phosphide / nickel foam three-dimensional self-supporting electrode material; application of nickel phosphide-ruthenium phosphide / foam nickel three-dimensional self-supporting electrode material in electrolyzed water. The preparation process of the present invention is convenient and simple, can greatly reduce the cost of the electrocatalyst, and has excellent performance in alkaline electrocatalytic hydrogen evolution, and also exhibits excellent catalytic performance in alkaline electrocatalytic oxygen evolution and full hydrolysis, and the three-dimensional porous The foamed nickel carrier has excellent conductivity, which can increase the loading capacity of the active sites and accelerate the transfer speed of electrons and protons; the in-situ growth method can effectively improve the interaction between nickel phosphide-ruthenium phosphide and the carrier foamed nickel, and then enhance its electrocatalytic stability.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a preparation method and application of a nickel phosphide-ruthenium phosphide / foam nickel three-dimensional self-supporting electrode material. Background technique [0002] The electrocatalytic water splitting technology, through the electrolysis of water to produce hydrogen and oxygen, efficiently stores a large amount of electrical energy in chemical bonds, thereby solving the problem of difficult storage of electrical energy, and at the same time obtaining zero-pollution, high calorific value and recyclable hydrogen energy. Today, one of the main challenges for effective large-scale electrolysis of water is the efficient electrocatalysts (such as Pt / C, RuO 2 , IrO 2 etc.) are all expensive rare metal catalysts, which greatly increases the cost of hydrogen production and greatly limits the large-scale application of electrolysis of water hydrogen pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/091C25B11/061C25B11/031C25B11/054C25B1/04
CPCC25B1/04Y02E60/36
Inventor 李继森司崇殿
Owner JINING UNIV
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