Efficient total water splitting electrocatalyst IPBAP/Ni2P@MoOx/NF and preparation method thereof

A catalyst and hydropower technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problem that the oxygen evolution performance of molybdenum-based catalysts is not excellent

Active Publication Date: 2020-01-21
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Molybdenum-based catalyst is a new type of high-efficiency hydrogen evolution catalyst. It has excellent electrocatalytic hydrogen evolution performance under acidic, neutral and alkaline conditions. However, the oxygen evolution performance of molybdenum-based catalysts is not excellent.

Method used

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  • Efficient total water splitting electrocatalyst IPBAP/Ni2P@MoOx/NF and preparation method thereof
  • Efficient total water splitting electrocatalyst IPBAP/Ni2P@MoOx/NF and preparation method thereof
  • Efficient total water splitting electrocatalyst IPBAP/Ni2P@MoOx/NF and preparation method thereof

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Experimental program
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Embodiment 1

[0035] The complete hydrolysis electrocatalyst IPBAP / Ni described in this embodiment 2 The preparation method of P@MoOx / NF comprises the following steps:

[0036] (1) Cut commercial nickel foam into a size of 10mm*20mm, ultrasonically treat each in 3M dilute hydrochloric acid, absolute ethanol, and deionized water for 15 minutes, then vacuum dry at 60°C for 12 hours, and set aside;

[0037] (2) Weigh 0.1 mmol of ammonium molybdate tetrahydrate, 0.26 mmol of nickel nitrate hexahydrate and 2 mmol of acetamide, add 60 ml of deionized water and stir for 2 hours to obtain a loading solution;

[0038] (3) Transfer the obtained load solution to the reactor, and add the previously treated nickel foam, seal it and put it in an oven at 180°C for 24 hours; when the reactor cools down to room temperature, take out the nickel foam and wash Rinse 3 times, put into 60℃ oven to dry for 12h;

[0039] (4) Soak the dried nickel foam in 0.01M potassium ferricyanide for 24 hours, rinse it with d...

Embodiment 2

[0052] The complete hydrolysis electrocatalyst IPBAP / Ni described in this embodiment 2 The preparation method of P@MoOx / NF comprises the following steps:

[0053] (1) Cut commercial nickel foam into a size of 10mm*20mm, ultrasonically treat each in 3M dilute hydrochloric acid, absolute ethanol, and deionized water for 15 minutes, then vacuum dry at 60°C for 12 hours, and set aside;

[0054] (2) In addition, weigh 0.1 mmol of ammonium molybdate tetrahydrate, 0.35 mmol of nickel nitrate hexahydrate and 2 mmol of acetamide, add 60 ml of deionized water and stir for 2 hours to obtain a loading solution;

[0055] (3) Transfer the obtained load solution to the reaction kettle, add the previously treated foamed nickel and seal it, and put it in an oven at 180°C for 24 hours of reaction; when the reaction kettle is cooled to room temperature, take out the foamed nickel and rinse it with deionized water 3 times, put it in an oven at 60°C for 12 hours;

[0056] (4) Soak the dried nick...

Embodiment 3

[0059] The complete hydrolysis electrocatalyst IPBAP / Ni described in this embodiment 2 The preparation method of P@MoOx / NF comprises the following steps:

[0060] (1) Cut commercial nickel foam into a size of 10mm*20mm, ultrasonically treat each in 3M dilute hydrochloric acid, absolute ethanol, and deionized water for 15 minutes, then vacuum dry at 60°C for 12 hours, and set aside;

[0061] (2) Weigh 0.1 mmol of ammonium molybdate tetrahydrate, 0.175 mmol of nickel nitrate hexahydrate and 2 mmol of acetamide, add 60 ml of deionized water and stir for 2 hours to obtain a loading solution;

[0062] (3) Transfer the obtained load solution to the reaction kettle, add the previously treated foamed nickel and seal it, and put it in an oven at 180°C for 24 hours of reaction; when the reaction kettle is cooled to room temperature, take out the foamed nickel and rinse it with deionized water 3 times, put it in an oven at 60°C for 12 hours;

[0063] (4) Soak the dried nickel foam in 0...

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Abstract

The invention belongs to the field of new energy materials, and particularly relates to an efficient total water splitting electrocatalyst IPBAP / Ni2P@MoOx / NF and a preparation method thereof. The electrocatalyst is an in-situ composite material of a Prussian blue analogue phosphide, nickel phosphide, molybdenum oxide and foamed nickel and is prepared by subjecting ammonium molybdate and nickel nitrate in a certain proportion to a hydrothermal reaction to synthesize a nanometer flower-ball-shaped precursor, then dipping and loading with a potassium ferricyanide solution, and carrying out low-temperature phosphating treatment. According to the electrocatalyst, the excellent hydrogen evolution performance of the molybdenum oxide and the excellent oxygen evolution performance of the Prussian blue analogue are combined, the excellent hydrogen evolution performance is kept, meanwhile, the oxygen evolution performance is improved to a great extent, and the electrocatalyst with the efficient total water splitting performance is obtained.

Description

technical field [0001] The invention belongs to the field of new energy materials, in particular to a high-efficiency full-catalyst for water decomposition IPBAP / Ni 2 P@MoOx / NF and its preparation method. Background technique [0002] With the continuous advancement of social development and industrialization, the demand for global energy has increased dramatically. At present, the problem of environmental pollution and the shortage of energy are important factors for the urgent development of clean energy forms, and the development of clean, efficient and sustainable new energy systems is the fundamental way to solve the increasing energy crisis and environmental pollution in today's world. As a green and efficient secondary energy source with a wide range of sources, hydrogen energy has the advantages of abundant resources, clean and efficient, high energy density, and environmental friendliness. It is an ideal renewable energy source and will surely become an important p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/19B01J35/02B01J35/10C25B11/06C25B1/04
CPCB01J27/19B01J35/0033B01J35/02B01J35/10C25B1/04C25B11/04Y02E60/36
Inventor 漆小鹏汪方木
Owner JIANGXI UNIV OF SCI & TECH
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