Electrocatalyst based on FeOOH-NiOOH/NF and preparation method of electrocatalyst

An electrocatalyst and iron oxyhydroxide technology, applied in the field of hydrogen energy, can solve the problems of unfavorable practical application and popularization of electrolyzed water, single catalytic activity, high price, etc., achieve excellent electrocatalytic oxygen evolution and hydrogen evolution performance, simple preparation method, and use long life effect

Active Publication Date: 2019-11-22
华氢(广东)新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its price is very expensive, and it has poor stability under alkaline conditions and single catalytic activity.
Commercial HER mainly relies on platinum (Pt)-based catalysts, which also have the disadvantages of high price and poor stability.
Based on the above deficiencies, these precious metals are not conducive to the practical application and promotion of electrolyzed water.

Method used

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  • Electrocatalyst based on FeOOH-NiOOH/NF and preparation method of electrocatalyst
  • Electrocatalyst based on FeOOH-NiOOH/NF and preparation method of electrocatalyst
  • Electrocatalyst based on FeOOH-NiOOH/NF and preparation method of electrocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0037] (1) Treatment of nickel foam: Cut carbon cloth nickel foam into a size of 1x3 cm, then ultrasonically wash in 0.5 mol / L hydrochloric acid solution, deionized water, and ethanol for 5 minutes, cycle wash three times, and then dry it for later use.

[0038] (2) Prepare mixed solvent: Measure 8 mL sodium hydroxide (5 M), 4 mL ammonium persulfate (0.5 M) and 9 mL deionized water respectively, mix them, ultrasonicate for 10 minutes, mix well and set aside.

[0039] (3) Preparation of Ni(OH) 2 NTs / NF: Take 1*3 cm 2 The nickel foam was immersed in the prepared mixed solvent for 30 minutes at room temperature, then heated to 80 °C, kept for 12 h, and cooled to room temperature to obtain Ni(OH) 2 NTs / NF nanosheets (the nanosheets formed are Example 5).

[0040] (4) Preparation of nickel-iron mixed solution: take 30 mL of 0.2 M ferric chloride solution, and add sodium dodecylsulfonate (1 mL, 1 g L -1 ), ultrasonically mixed for 30 minutes, put the Ni(OH)2 NTs / NF nanosheets pre...

Embodiment 3

[0044] (1) Treatment of nickel foam: Cut carbon cloth nickel foam into a size of 1x3 cm, then ultrasonically wash in 0.5 mol / L hydrochloric acid solution, deionized water, and ethanol for 5 minutes, cycle wash three times, and then dry it for later use.

[0045] (2) Prepare mixed solvent: Measure 8 mL sodium hydroxide (5 M), 4 mL ammonium persulfate (0.5 M) and 9 mL deionized water respectively, mix them, ultrasonicate for 10 minutes, mix well and set aside.

[0046] (3) Preparation of Ni(OH) 2 NTs / NF: Take 1*3 cm 2 The nickel foam was immersed in the prepared mixed solvent for 30 minutes at room temperature, then heated to 80 °C, kept for 12 h, and cooled to room temperature to obtain Ni(OH) 2 NTs / NF nanosheets (the nanosheets formed are Example 5).

[0047] (4) Preparation of nickel-iron mixed solution: take 30 mL of 0.2 M ferric chloride solution, and add sodium dodecylsulfonate (1 mL, 1 g L -1 ), ultrasonically mixed for 30 minutes, put the Ni(OH)2 NTs / NF nanosheets p...

Embodiment 4

[0051] (1) Treatment of nickel foam: Cut carbon cloth nickel foam into a size of 1x3 cm, then ultrasonically wash in 0.5 mol / L hydrochloric acid solution, deionized water, and ethanol for 5 minutes, cycle wash three times, and then dry it for later use.

[0052] (2) Prepare mixed solvent: Measure 8 mL sodium hydroxide (5 M), 4 mL ammonium persulfate (0.5 M) and 9 mL deionized water respectively, mix them, ultrasonicate for 10 minutes, mix well and set aside.

[0053] (3) Preparation of Ni(OH) 2 NTs / NF: Take 1*3 cm 2 The nickel foam was immersed in the prepared mixed solvent for 30 minutes at room temperature, then heated to 80 °C, kept for 12 h, and cooled to room temperature to obtain Ni(OH) 2 NTs / NF nanosheets (the nanosheets formed are Example 5).

[0054] (4) Preparation of nickel-iron mixed solution: take 30 mL of 0.2 M ferric chloride solution, and add sodium dodecylsulfonate (1 mL, 1 g L -1 ), ultrasonically mixed for 30 minutes, put the Ni(OH)2 NTs / NF nanosheets p...

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PUM

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Abstract

The invention relates to the technical field of electrocatalysis water decomposition, in particular to an electrocatalyst based on FeOOH-NiOOH/NF and a preparation method. After being soaked in a nickel-iron mixed solution simply, the nickel foam grows in situ to obtain the FeOOH-NiOOH/NF composite material. The electrocatalyst based on FeOOH-NiOOH/NF has the excellent electro-catalytic water decomposition performance, is long in service life under high current density, and shows an application prospect in the industrial large-scale production of the oxygen and hydrogen.

Description

technical field [0001] The invention relates to the technical field of hydrogen energy, in particular to an electrocatalyst based on FeOOH-NiOOH / NF and a preparation method. Background technique [0002] Energy and the environment are two important issues affecting the development of human society. With the continuous development and progress of society, people's demand for energy is also increasing. In the current energy use structure, traditional fossil fuels still account for the vast majority, including coal, oil, and natural gas. As a non-renewable energy source, people's excessive exploitation and use of fossil energy not only causes the increasing shortage of energy, but also brings about huge environmental damage. It can be seen that the development of safe, efficient, and sustainable clean energy is imminent. In energy conversion technology, electrolysis of water, including oxygen evolution reaction (OER) and oxygen evolution reaction (HER), has become a current re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B82Y30/00B82Y40/00C25B11/06C25B11/03C25B1/04
CPCB01J23/755B01J35/0033B01J35/0073B82Y30/00B82Y40/00C25B11/03C25B1/04C25B11/051C25B11/057C25B11/091Y02E60/36
Inventor 杨秀林万梓霞闫普选
Owner 华氢(广东)新能源科技有限公司
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