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Preparation method of oxygen evolution catalyst for transition metal group metal sulfide

A metal sulfide and transition metal technology, applied in the field of oxygen evolution catalysts, can solve the problems of cumbersome steps and unfavorable green production, and achieve the effect of simple method, low raw material cost and good catalytic stability

Active Publication Date: 2019-07-26
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the steps of the traditional doping method are cumbersome (Elecrtochimica Acta, 2019, 299, 575-581), and the high temperature required for synthesis (Adv. Mater. 2017, 29, 1701584) is not conducive to green production

Method used

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  • Preparation method of oxygen evolution catalyst for transition metal group metal sulfide
  • Preparation method of oxygen evolution catalyst for transition metal group metal sulfide
  • Preparation method of oxygen evolution catalyst for transition metal group metal sulfide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1, the configuration concentration is 29mmol / L nickel nitrate aqueous solution, add ammonium fluoride and urea, make the final concentration of ammonium fluoride and urea respectively 0.17mol / L and 0.34mol / L, transfer the mixed solution to 100ml in the reactor;

[0031] Step 2, immersing the washed nickel foam into the above mixed solution, and performing a hydrothermal reaction at 120° C. for 12 hours to obtain a nickel hydroxide nanosheet array;

[0032] Step 3: Rinse the nickel foam on which the nickel hydroxide nanosheet array is grown with deionized water, and then soak it in a potassium ferricyanide solution with a concentration of 22 mmol / L for 12 hours, and control the temperature to be 60°C;

[0033] Step 4, transfer the soaked sample to Na with a concentration of 0.2 mol / L 2 In S, the reaction was carried out at 100° C. for 10 hours. After the reaction, the reaction was washed with water and dried in vacuum to obtain an iron-doped nickel sulfide oxygen e...

Embodiment 2

[0038] This example is basically the same as Example 1, the only difference is that the time for soaking potassium ferricyanide is changed to 18 hours, and other conditions remain unchanged.

Embodiment 3

[0040] This example is basically the same as Example 1, the only difference is that the time for soaking potassium ferricyanide is changed to 6 hours, and other conditions remain unchanged.

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Abstract

The invention discloses a preparation method of an oxygen evolution catalyst for transition metal group metal sulfide. The preparation method includes performing self-growth of a nickel hydroxide nanosheet array on foamed nickel, adding a potassium ferricyanide solution with a certain concentration, growing a Prussian blue derivative on the nanosheet array, adding sodium sulfide, and preparing aniron-doped porous nickel sulfide nanosheet by the aid of hydrothermal vulcanization and etching. The iron-doped porous nickel sulfide nanosheet maintains high oxygen evolution activity, the whole reaction process is simple, and the method is easy to operate and beneficial to industrial production.

Description

technical field [0001] The invention belongs to the technical field of oxygen evolution catalysts, and relates to a preparation method of a transition metal group metal sulfide oxygen evolution catalyst. Background technique [0002] With the development of society, people's demand for energy is increasing. Traditional energy sources include natural gas, coal, hydroelectric power, wind power, nuclear power, etc. Compared with the above energy sources, hydrogen energy, as a green and high-energy energy source, has received extensive attention. At present, hydrogen production technologies include photo-splitting water for hydrogen production, fossil fuel hydrogen production, biological hydrogen production, high-temperature pyrolysis water for hydrogen production, and water electrolysis for hydrogen production. Hydrogen production by electrolysis of water is regarded as a hydrogen production technology with great potential due to its wide range of raw material sources, simple...

Claims

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Application Information

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IPC IPC(8): B01J27/043C25B1/04C25B11/06
CPCB01J27/043C25B1/04C25B11/04Y02E60/36
Inventor 姜炜郭小雪吴方郝嘎子胡玉冰
Owner NANJING UNIV OF SCI & TECH
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