Ultrathin metallic nickel nanosheet, manufacturing method thereof and application of nanosheets as electrode materials

A technology of ultra-thin metal and electrode materials, applied in the direction of electrodes, battery electrodes, circuits, etc., to achieve the effect of improving the overall electrical properties, unique and ingenious synthesis methods, and good electrical conductivity

Active Publication Date: 2015-11-11
深圳海氢科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, metal atoms tend to form a three-dimensional close-packed structure, which makes the liquid-phase synthesis of ultrathin nanosheet structures with a large number of unsaturated coordination atoms a great challenge.
Exist

Method used

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  • Ultrathin metallic nickel nanosheet, manufacturing method thereof and application of nanosheets as electrode materials
  • Ultrathin metallic nickel nanosheet, manufacturing method thereof and application of nanosheets as electrode materials
  • Ultrathin metallic nickel nanosheet, manufacturing method thereof and application of nanosheets as electrode materials

Examples

Experimental program
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Effect test

Embodiment 1

[0057] a. put the foamed nickel base into the first reactor at an angle, then add nickel nitrate containing 0.125 mol / liter, an aqueous solution of 0.25 mol / liter hexamethylenetetramine to the reactor, and then seal the reaction kettle, heated to 100° C. and kept under autogenous pressure for 10 hours to carry out hydrothermal reaction, so as to grow nickel hydroxide nanosheet arrays vertically to the substrate on the surface of the nickel foam substrate;

[0058] b. take out the nickel foam substrate, wash and dry;

[0059] c. The nickel hydroxide nanosheet array substrate treated in step b is placed obliquely into the second reaction kettle, and then a solution containing sodium hydroxide in ethylene glycol with a concentration of 0.625 mol / liter is added to the reaction kettle , sealing the reaction kettle, raising the temperature to 160° C. and maintaining it under autogenous pressure for 12 hours to carry out alcohol thermal reduction reaction, so that the original appear...

Embodiment 2

[0062]Referring to the method in Example 1, add 0.33 mol / L sodium borohydride to the reduction system in step c of Example 1, and when other conditions remain unchanged, an assembly of nickel nanosheets, namely nickel nanoflowers, can be prepared .

[0063] The high-magnification transmission electron microscope image of the obtained ultrathin nickel nanosheet assembly material is shown in the attached Figure 10 , and its high-magnification transmission electron microscope and electron diffraction images are shown in the appendix Figure 11a and Figure 11b , its XRD spectrum is shown in the appendix Figure 12 , the oxidation polarization curve of hydrazine hydrate in the alkaline solution of hydrazine hydrate is shown in the attached Figure 13 , and its stability test chart in different concentrations of hydrazine hydrate solution is shown in the attached Figure 14 , see the cathodic polarization curve for electrolyzing hydrogen in 0.1mol / L KOH solution. Figure 15 ,...

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Abstract

The invention discloses an ultrathin metallic nickel nanosheet. The size of the ultrathin metallic nickel nanosheet is that the thickness ranges from 2 nanometers to 5 nanometers, the length ranges from 100 nanometers to 300 nanometers, and the width ranges from 50 nanometers to 300 nanometers. The invention further discloses an electrode material with the surface provided with an ultrathin metallic nickel nanosheet array. The electrode material comprises a porous conductive substrate and the ultrathin metallic nickel nanosheet array which grows on the substrate and is perpendicular to the porous conductive substrate. The invention further discloses an electrode material with the surface provided with a metallic nickel nanosheet assembling body. The three materials mentioned above can be manufactured through two steps of a hydrothermal synthesis method. The materials are large in specific surface area, high in stability, excellent in electro-catalytic property and capable of being used as an anode material of a hydrazine hydrate oxygenated fuel battery and a cathode material of electrolyzed elutriation hydrogen.

Description

technical field [0001] The invention belongs to the technical field of inorganic advanced nanometer materials Background technique [0002] Due to the small size effect and special surface electronic structure, metal nanomaterials have excellent optical, electrical, catalytic and other properties, so they have a wide range of applications. Compared with traditional metal nanomaterials, two-dimensional ultrathin nanosheet metal materials have excellent thermal conductivity, large specific surface area, high electron mobility and electrical conductivity, etc., so they are widely used in the fields of physics, chemistry and materials science. It has extremely high application value [Nat.Commun.2014,5,3093]. However, metal atoms tend to form a three-dimensional close-packed structure, making the liquid-phase synthesis of ultrathin nanosheets with a large number of unsaturated coordination atoms a great challenge. Existing synthetic methods can only prepare noble metal nanoshee...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F9/24H01M4/86H01M4/90C25B11/04
CPCY02E60/50
Inventor 孙晓明冯广邝允
Owner 深圳海氢科技有限公司
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