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Preparation method of template-free electro-deposition SmCo nanowires

A nanowire and electrodeposition technology, applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of time-consuming and labor-intensive template method, and achieve time-saving operation, high conductivity and high purity. Effect

Inactive Publication Date: 2016-06-08
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for electrodepositing SmCo nanowires without a template, which effectively solves the time-consuming and labor-intensive problem of the template method and greatly simplifies the experimental process

Method used

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  • Preparation method of template-free electro-deposition SmCo nanowires
  • Preparation method of template-free electro-deposition SmCo nanowires
  • Preparation method of template-free electro-deposition SmCo nanowires

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Effect test

Embodiment 1

[0039] 1. Electrode pretreatment, the working electrode (WE) is a tungsten sheet, the counter electrode (CE) is a cobalt sheet, and the reference electrode (RE) is Co 2+ / Co electrode, which consists of cobalt wire impregnated with 40:60mol% CoCl 2 -EMIC ionic liquids in porous glass tubes. Before use, all the electrodes were polished to a mirror surface with sandpaper, and the cobalt sheet and cobalt wire were ultrasonically washed with acetone for 20 minutes to remove organic matter, and then washed with deionized water and dried for later use. The tungsten sheet of the working electrode should be used first with 2MHNO 3 Ultrasound for 20 minutes to wash away oxides, then use acetone for 20 minutes to wash away organic matter, and finally wash with deionized water and dry for later use;

[0040] 2. To prepare the electrolyte, weigh SmCl in the glove box according to the molar ratio of 1.67:40:60 3 、CoCl 2 and EMIC, mix evenly, heat at a rate of 0.5°C / min, keep at 120°C f...

Embodiment 2

[0044] 1. Electrode pretreatment, the working electrode (WE) is a tungsten sheet, the counter electrode (CE) is a cobalt sheet, and the reference electrode (RE) is Co 2+ / Co electrode, which consists of cobalt wire impregnated with 40:60mol% CoCl 2 -EMIC ionic liquids in porous glass tubes. Before use, all the electrodes were polished to a mirror surface with sandpaper, and the cobalt sheet and cobalt wire were ultrasonically washed with acetone for 20 minutes to remove organic matter, and then washed with deionized water and dried for later use. The tungsten sheet of the working electrode should be used first with 2MHNO 3 Ultrasound for 20 minutes to wash away oxides, then use acetone for 20 minutes to wash away organic matter, and finally wash with deionized water and dry for later use;

[0045] 2. To prepare the electrolyte, weigh SmCl in the glove box according to the molar ratio of 1.67:40:60 3 、CoCl 2 and EMIC, mix evenly, heat at a rate of 0.5°C / min, keep at 120°C f...

Embodiment 3

[0048] 1. Electrode pretreatment, the working electrode (WE) is a tungsten sheet, the counter electrode (CE) is a cobalt sheet, and the reference electrode (RE) is Co 2+ / Co electrode, which consists of cobalt wire impregnated with 40:60mol% CoCl 2 -EMIC ionic liquids in porous glass tubes. Before use, all the electrodes were polished to a mirror surface with sandpaper, and the cobalt sheet and cobalt wire were ultrasonically washed with acetone for 20 minutes to remove organic matter, and then washed with deionized water and dried for later use. The tungsten sheet of the working electrode should be used first with 2MHNO 3 Ultrasound for 20 minutes to wash away oxides, then use acetone for 20 minutes to wash away organic matter, and finally wash with deionized water and dry for later use;

[0049] 2. To prepare the electrolyte, weigh SmCl in the glove box according to the molar ratio of 1.67:40:60 3 、CoCl 2 and EMIC, mix evenly, heat at a rate of 0.5°C / min, keep at 120°C f...

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Abstract

The invention relates to the field of ionic liquid electro-deposition technologies, in particular to a method of template-free electro-deposition SmCo nanowires. The method comprises the following steps: preparing new ionic liquid SmCl3-CoCl2-EMIC at first; and carrying out potentiostatic deposition on the new ionic liquid to obtain the SmCOnanowires with the diameters being about 50 nm. Through change of electrochemical parameters, the SmCo alloy nanowires with different lengths and alloying components can be prepared in a controllable manner, and meanwhile, a hysteresis curve shows that the nanowires have obvious magnetic anisotropy. By the method, template manufacturing and dissolving processes are omitted. The method has the advantages of low cost, low consumption, simple technology and the like.

Description

technical field [0001] The invention relates to the field of ionic liquid electrodeposition technology, in particular to a preparation method of template-free electrodeposited SmCo nanowires. Background technique [0002] As the first and second generation permanent magnet materials, SmCo alloy has important application value due to its high Curie temperature, coercive force and magnetic energy product, and is suitable for microelectromechanical systems and high-density magnetic recording materials. The classic preparation methods of rare earth permanent magnet materials, such as powder metallurgy and magnetron sputtering, have the disadvantages of high cost and high process requirements. Compared with the above methods, electrochemical deposition can control the morphology and composition, the equipment is simple, the operation is convenient, and the production efficiency is high. However, due to the negative standard electrode potential of Sm, the electrodeposition in aqu...

Claims

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Application Information

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IPC IPC(8): C25C5/02C25C7/02B22F1/00B82Y30/00B82Y40/00
CPCC25C5/02C25C7/02B82Y30/00B82Y40/00B22F1/0547
Inventor 李冰陈宇琦陈刚施宇康
Owner EAST CHINA UNIV OF SCI & TECH
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