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Preparation of al-ti-ni crystal-amorphous composite material with aluminum-based alloy and its preparation method and application

An amorphous composite material, al-ti-ni technology, applied in the field of new crystalline/amorphous composite material preparation, can solve problems such as poor electrical conductivity, improve corrosion resistance, promote electron transport process, surface structure and chemical A stable effect

Active Publication Date: 2022-02-22
梁春永
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the conductivity of the electrode material has an important impact on the catalytic performance. The higher the electron transmission efficiency, the easier the catalytic process is. Since the amorphous material lacks electron transmission channels such as grain boundaries and dislocations, its relatively poor conductivity is not conducive to practical industrial catalytic process

Method used

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  • Preparation of al-ti-ni crystal-amorphous composite material with aluminum-based alloy and its preparation method and application
  • Preparation of al-ti-ni crystal-amorphous composite material with aluminum-based alloy and its preparation method and application
  • Preparation of al-ti-ni crystal-amorphous composite material with aluminum-based alloy and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step 1, prepare Al-Ti-Ni raw alloy strips according to the following components and atomic percentages: the content of Al is 75%-95%, the content of Ti is 2%-7%, and the content of Ni is 12%-20 %;

[0028] Step 2, cutting the Al-Ti-Ni original alloy strip obtained in step 1 into a strip with a thickness of 10 μm-30 μm, a width of 2 mm, and a length of 2 cm; Wash in deionized water and dry in air for later use;

[0029] Step 3, get the Al-Ti-Ni alloy strip that is made by step 2 and the potassium hydroxide solution that the molar concentration of 100ml is 0.8M-1.2M is placed in electrolyzer together and carries out electrochemical reaction, dealloying potential is- 0.8V~-1.05V (vs.Ag / AgCl), the reaction time is 4000s~6000s, the sample prepared after the reaction is rinsed with deionized water and dried in the air to obtain Al-Ti-Ni prepared from aluminum-based alloy Crystalline-amorphous composites.

[0030] figure 1 The SEM figure of the Al-Ti-Ni crystal-amorphous c...

Embodiment 2

[0036] Step 1, prepare Al-Ti-Ni raw alloy strips according to the following components and atomic percentages: the content of Al is 75%-95%, the content of Ti is 7%-15%, and the content of Ni is 5%-12% %;

[0037] Step 2, cutting the Al-Ti-Ni original alloy strip obtained in step 1 into a strip with a thickness of 10 μm-30 μm, a width of 2 mm, and a length of 2 cm; Wash in deionized water and dry in air for later use;

[0038] Step 3, get the Al-Ti-Ni alloy strip that is made by step 2 and the potassium hydroxide solution that the molar concentration of 100ml is 0.8M-1.2M is placed in electrolyzer together and carries out electrochemical reaction, dealloying potential is- 0.65V~-0.85V (vs.Ag / AgCl), the electrochemical dealloying reaction time is 5000s~7000s, the sample prepared after the reaction is rinsed with deionized water, dried in the air, and the Al -Ti-Ni crystal-amorphous composite material.

[0039] figure 2 Shown is the SEM image of the Al-Ti-Ni crystal-amorpho...

Embodiment 3

[0044] Step 1, prepare Al-Ti-Ni raw alloy strips according to the following components and atomic percentages: the content of Al is 75%-95%, the content of Ti is 7%-15%, and the content of Ni is 5%-12% %;

[0045] Step 2, cutting the Al-Ti-Ni original alloy strip obtained in step 1 into strips with a thickness of 8-20 μm, a width of 1 mm, and a length of 1 cm; Wash in deionized water and dry in air for later use;

[0046] Step 3, get the Al-Ti-Ni alloy strip that is made by step 2 and the potassium hydroxide solution that the molar concentration of 100ml is 0.8M-1.2M is placed in electrolyzer together and carries out electrochemical reaction, dealloying potential is- 0.85V~-1.05V (vs.Ag / AgCl), the electrochemical dealloying reaction time is 5000s~7000s, the sample prepared after the reaction is rinsed with deionized water, dried in the air, and the Al -Ti-Ni crystal-amorphous composite material.

[0047] image 3 The SEM figure of the Al-Ti-Ni crystal-amorphous composite m...

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Abstract

The invention provides an Al-Ti-Ni crystal-amorphous composite material prepared from an aluminum-based alloy and its preparation method and application. The Al-Ti-Ni original alloy is prepared according to the following atomic percentage content: the content of Al is 70-90%, and the content of Ti is 70-90%. The content of Al-Ti-Ni is 1-20%, and the content of Ni is 1-25%. The Al-Ti-Ni alloy is cut into a strip with a thickness of 8-32μm, a width of 1-3mm, and a length of 1-3cm; the strip is in After ultrasonication in absolute ethanol for 3‑8min, wash with deionized water and dry for later use; place the strip together with potassium hydroxide solution with a molar concentration of 0.6‑1.5M in an electrolytic cell for electrochemical reaction, and the dealloying potential It is ‑0.60‑‑1.00V, and the reaction time is 3500‑7500s. After the reaction is completed, the sample prepared after washing and drying is the Al‑Ti‑Ni crystal‑amorphous composite material prepared from an aluminum-based alloy, which has high-efficiency electrolysis of water Hydrogen evolution catalytic activity, and low application cost, simple operation, short time-consuming, is an efficient and economical synthesis method.

Description

technical field [0001] The invention relates to the technical field of preparation of novel crystal / amorphous composite materials, and more specifically relates to an Al-Ti-Ni crystal-amorphous composite material prepared from an aluminum-based alloy, a preparation method and application thereof. Background technique [0002] In recent years, with the increasing impact of the development of traditional fossil fuels on the environment, my country, as a major energy country, is committed to the research of new energy, and strives to gradually transform the industrial economy into a new energy economy. At present, fossil fuel hydrogen energy has received more and more attention in the field of new energy due to its high energy conversion efficiency and clean and pollution-free characteristics. However, the activity and cost of cathode catalysts in the process of hydrogen production by electrolysis of water are the key factors restricting the large-scale application of direct hy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/089C22C21/00C25B1/04
CPCC25B1/04C22C21/00C22C21/003C25F3/04B01J23/755B01J35/33B01J35/61Y02E60/36
Inventor 朱胜利周奕扬崔振铎杨贤金
Owner 梁春永
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