Iron-nickel layered double metal hydroxide/foam nickel composite material and preparation method and application thereof

A layered bimetallic, hydroxide technology, applied in the field of composite materials, can solve the problems of scarcity of resources, high price, difficult to apply in a wide range, etc., and achieve the effects of low price, simple steps, and easy widespread promotion.

Pending Publication Date: 2019-08-23
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Traditional oxygen evolution and hydrogen evolution catalysts are noble metals and some noble metal oxides (IrO 2 and RuO 2 ), excellent catalytic performance, but the high price and scarcity of resources make it difficult to apply in a wide range

Method used

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  • Iron-nickel layered double metal hydroxide/foam nickel composite material and preparation method and application thereof
  • Iron-nickel layered double metal hydroxide/foam nickel composite material and preparation method and application thereof
  • Iron-nickel layered double metal hydroxide/foam nickel composite material and preparation method and application thereof

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preparation example Construction

[0021] The invention provides a method for preparing an iron-nickel layered double hydroxide / foam nickel composite material, comprising:

[0022] 1) In the presence of a solvent, the iron source, ammonium fluoride, urea and nickel foam are subjected to a solvothermal reaction to obtain a reaction product A;

[0023] 2) In the presence of a solvent, the nickel source, ammonium fluoride, urea, and reaction product A are subjected to a solvothermal reaction to prepare an iron-nickel layered double hydroxide / foam nickel composite material.

[0024] In step 1) of the above-mentioned preparation method, the consumption of each material can be selected in a wide range, but in order to further improve the overpotential, stability and Catalytic performance, preferably, in step 1), the amount ratio of iron source, ammonium fluoride, urea and nickel foam is 0.75mmol: 1-8mmol: 2-18mmo: 1cm×1cm-2.5cm×4cm, the foam The thickness of nickel is 1.5mm.

[0025] In step 1) of above-mentioned p...

Embodiment 1

[0036] 1) Mix 0.3030g ferric nitrate nonahydrate (0.75mmol), 0.1666g ammonium fluoride (4.49mmol), 0.54g urea (9mmol), and 30mL deionized water in a beaker to obtain a uniform solution.

[0037] 2) Transfer the above-mentioned homogeneous solution to a stainless steel reaction kettle with a polytetrafluoroethylene jacket and add nickel foam (2cm×3cm), place it directly in an oven at 120°C, and react at 120°C for 12h until the reaction time is over Afterwards, it was naturally cooled to 25° C. to obtain the reaction product A1.

[0038] 3) Mix 0.0218g nickel nitrate hexahydrate (0.075mmol), 0.01666g ammonium fluoride (0.449mmol), 0.054g urea (0.9mmol), and 30mL deionized water in a beaker to obtain a uniform solution.

[0039]4) Transfer the above-mentioned homogeneous solution to a stainless steel reaction kettle with a polytetrafluoroethylene jacket and add the above-mentioned reaction product A1, directly place it in an oven at 120°C, and react at 120°C for 12 hours. After t...

Embodiment 2

[0041] Carry out according to the method of embodiment 1, difference is, in steps 1) and 2), ammonium fluoride 1mmol, urea 2mmol, nickel foam 1cm×1cm.

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Abstract

The invention discloses an iron-nickel layered double metal hydroxide / foam nickel composite material and a preparation method and application thereof. The preparation method comprises the following steps: 1) performing a solvothermal reaction on an iron source, ammonium fluoride, urea and foam nickel in the presence of a solvent to obtain a reaction product A; and 2) performing a solvothermal reaction on a nickel source, ammonium fluoride, urea and the reaction product A in the presence of a solvent to obtain the iron-nickel layered double metal hydroxide / foam nickel composite material. The iron-nickel layered double metal hydroxide / foam nickel composite material has the characteristics of low over-potential and high stability, and thus the composite material can be applied in an oxygen evolution reaction and a hydrogen evolution reaction. The preparation method has the advantages of simple raw materials and convenient operation.

Description

technical field [0001] The invention relates to composite materials, in particular to an iron-nickel layered double metal hydroxide / foam nickel composite material and its preparation method and application. Background technique [0002] As the world is becoming more and more polluted, people are increasingly eager for clean energy. Currently discovered or possibly utilized by people include solar energy, wind energy, nuclear energy, and hydrogen energy. Among them, solar energy and wind energy are greatly affected by regions and time, while nuclear energy is not widely accepted due to its potential safety. Hydrogen energy is convenient to use, has high heat per unit mass, and is completely non-polluting to the environment. It is a research focus in the field of new energy research. [0003] At present, hydrogen production technology is divided into hydrogen production by electrolysis of water and hydrogen production by photolysis of water. However, the most mature technical...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J35/04C25B1/04C25B11/06
CPCB01J23/755C25B1/04C25B11/04B01J35/33B01J35/56Y02E60/36
Inventor 耿保友黄匡富
Owner ANHUI NORMAL UNIV
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