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A kind of nanoporous Fe-based amorphous alloy and its preparation method and its application on oxygen evolution catalytic electrode

A nanocrystalline alloy and amorphous alloy technology, which is applied in the direction of electrodes, electrolytic processes, electrolytic components, etc., can solve problems that no one has mentioned, and achieve the effect of simple preparation method, good repeatability, and excellent oxygen evolution catalytic performance

Active Publication Date: 2018-02-16
北京自然天空科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no one mentioned it as a precursor material for the preparation of nanoporous amorphous

Method used

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  • A kind of nanoporous Fe-based amorphous alloy and its preparation method and its application on oxygen evolution catalytic electrode
  • A kind of nanoporous Fe-based amorphous alloy and its preparation method and its application on oxygen evolution catalytic electrode
  • A kind of nanoporous Fe-based amorphous alloy and its preparation method and its application on oxygen evolution catalytic electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1: with Fe 82 Nb 6 B 12 Preparation of Nanoporous Fe-based Amorphous Alloys Using Amorphous / Nanocrystalline Alloy Ribbons as Precursors

[0053] In this embodiment, the selected amorphous / nanocrystalline alloy precursor composition is Fe 82 Nb 6 B 12 , the preparation method of nanoporous material is as follows:

[0054] Step 1: Ingredients

[0055] Press Fe 82 Nb 6 B 12 Nominal composition Fe, Nb elemental elements and FeB (B: 21wt%) are pre-alloyed to become raw materials for preparing master alloy ingots;

[0056] Step 2: Melting the master alloy

[0057] Fe, Nb elemental elements and FeB pre-alloyed by Fe 82 Nb 6 B 12 The nominal composition is smelted in a vacuum arc melting furnace and smelted 3-4 times to obtain a master alloy ingot;

[0058] The smelting conditions are: the vacuum degree in the vacuum arc melting furnace during smelting is 8×10 -3 Below Pa, fill it with 0.05Mpa high-purity argon, smelt for 1-2 minutes each time, and sme...

Embodiment 2

[0067] Embodiment 2: with Fe 84 Nb 6 B 9 Cu 1 Preparation of Nanoporous Fe-based Amorphous Alloys Using Amorphous / Nanocrystalline Alloy Ribbons as Precursors

[0068] In this embodiment, the selected amorphous / nanocrystalline alloy precursor composition is Fe 84 Nb 6 B 9 Cu 1 , the preparation method of nanoporous material is as follows:

[0069] Step 1: Ingredients

[0070] Press Fe 84 Nb 6 B 9 Cu 1 Nominal composition Weigh Fe, Nb, Cu elemental elements and FeB (B: 21wt%) pre-alloyed to become the raw material for preparing master alloy ingot;

[0071] Step 2: Melting the master alloy

[0072] Fe, Nb, Cu elemental elements and FeB pre-alloyed by Fe 84 Nb 6 B 9 Cu 1 The nominal composition is smelted in a vacuum arc melting furnace and smelted 3-4 times to obtain a master alloy ingot;

[0073] The smelting conditions are: the vacuum degree in the vacuum arc melting furnace during smelting is 8×10 -3 Below Pa, fill it with 0.05Mpa high-purity argon, smelt fo...

Embodiment 3

[0082] Embodiment 3: with Fe 54 Ni 30 Nb 6 B 9 Cu 1 Preparation of Nanoporous Fe-based Amorphous Alloys Using Amorphous / Nanocrystalline Alloy Ribbons as Precursors

[0083] In this embodiment, the selected amorphous / nanocrystalline alloy precursor composition is Fe 54 Ni 30 Nb 6 B 9 Cu 1 , the preparation method of nanoporous material is as follows:

[0084] Step 1: Ingredients

[0085] Press Fe 54 Ni 30 Nb 6 B 9 Cu 1 Nominal composition Weigh Fe, Ni, Nb, Cu elemental elements and FeB (B: 21wt%) pre-alloyed to become raw materials for preparing master alloy ingots;

[0086] Step 2: Melting the master alloy

[0087] Fe, Ni, Nb, Cu elemental elements and FeB pre-alloyed by Fe 54 Ni 30 Nb 6 B 9 Cu 1 The nominal composition is smelted in a vacuum arc melting furnace and smelted 3-4 times to obtain a master alloy ingot;

[0088] The smelting conditions are: the vacuum degree in the vacuum arc melting furnace during smelting is 8×10 -3 Below Pa, fill it with 0.0...

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Abstract

The invention relates to a nanoporous Fe-based amorphous alloy and its preparation method and its application on an oxygen evolution catalytic electrode, specifically: using Fe-based amorphous / nanocrystalline alloy as a precursor, according to the characteristics of an amorphous phase and a nanocrystalline phase Different corrosion resistance, nanoporous Fe-based amorphous alloys prepared by selective etching of nanocrystalline phases. The prepared nanoporous Fe-based amorphous structure is stable, the specific surface area is large, and the composition and morphology can be adjusted. Oxygen catalytic activity, can be widely used in electrolysis of water oxygen evolution electrode and other fields. The preparation method of the invention is simple and has wide applicability.

Description

technical field [0001] The invention relates to a nanoporous Fe-based amorphous alloy, a preparation method and an application on an oxygen evolution catalytic electrode. Specifically, it involves using Fe-based amorphous / nanocrystalline alloys as precursors, and preparing nanoporous Fe-based amorphous alloys by selectively corroding nanocrystalline phases according to the different corrosion resistances of amorphous phases and nanocrystalline phases. And the porous amorphous alloy is applied on the electrolytic water oxygen evolution catalytic electrode to obtain high catalytic activity. Background technique [0002] Hydrogen production by electrolysis of water is an important way to prepare clean energy hydrogen, which has the advantages of environmental friendliness, abundant raw materials, and pure gas production. However, in the process of electrolyzing water, the electrode surface, especially the surface of the anode oxygen evolution electrode, will be polarized, caus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02C22C45/00C25B1/04C25B11/06
CPCC22C33/003C22C45/008C22C45/02C25B11/061C22C1/11Y02E60/36
Inventor 张涛靳宇李然
Owner 北京自然天空科技发展有限公司
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