Preparation method of metal nanosheet, metal nanosheet, application and cathode active material

A negative electrode active material and metal nanotechnology, which is applied in the field of metal nanosheets, can solve the problems of increasing the oxidation degree of the metal surface, no improvement, consumption, etc., and achieve the effect of low cost, good quality, and cost reduction

Pending Publication Date: 2019-04-05
SHENZHEN INST OF ADVANCED TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this method faces a serious problem: Because the sacrificial metal needs to be etched away to obtain nanosheets of another metal, an equal amount of another metal is consumed to produce a certain amount of nanosheets.
And in the etching process, it may also increase the degree of oxidation of the metal surface
It is precisely because of the above shortcomings that bimetallic rolling has not been improved in academia since it was reported.

Method used

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  • Preparation method of metal nanosheet, metal nanosheet, application and cathode active material
  • Preparation method of metal nanosheet, metal nanosheet, application and cathode active material
  • Preparation method of metal nanosheet, metal nanosheet, application and cathode active material

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preparation example Construction

[0079] In a first aspect, in at least one embodiment, a method for preparing metal nanosheets is provided, comprising the following steps:

[0080] A metal foil is provided, an organic coating is coated on the surface of the metal foil, and then the metal foil coated with the organic coating is folded in half and pressed multiple times to obtain a metal-organic coating composite sheet;

[0081] The metal sheet and the organic coating in the metal-organic coating composite sheet are separated to obtain the metal nano sheet.

[0082] The invention coats an organic coating on the surface of a metal foil, folds it in half and presses it multiple times to obtain a metal-organic coating composite sheet; separates the metal sheet and the organic coating in the metal-organic coating composite sheet, Metal nanosheets were obtained.

[0083] In view of the fact that the rolling method to prepare metal nanosheets is the most suitable method among many methods at present, due to the duct...

Embodiment 1－4

[0168] A method for preparing metal nanosheets, comprising the following steps:

[0169] Provide a metal foil, coat the surface of the metal foil with an organic coating, then fold the metal foil coated with the organic coating in half and press it multiple times to obtain a metal-organic coating composite sheet;

[0170] The metal sheet and the organic coating in the metal-organic coating composite sheet are separated to obtain the metal nano sheet.

[0171] The metal types and organic coating materials used in Examples 1-4 are all the same, the difference mainly lies in the number of times of rolling (folding in half), the main operating conditions of Examples 1-4 and the size of the metal nanosheets obtained are as shown in Table 1 Show.

[0172] Table 1 The operating conditions of Examples 1-4 and the size of the metal nanosheets obtained

[0173]

Embodiment 5－10

[0175] Embodiment 5-10 is compared with embodiment 4, and the organic coating material that adopts is all the same, and difference mainly lies in metal type and rolling (folding in half) times, the main operating conditions of embodiment 4 and embodiment 5-10 And the obtained metal nanosheet size is shown in Table 2.

[0176] Table 2 The operating conditions of Examples 4-10 and the size of the metal nanosheets obtained

[0177]

[0178]

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Abstract

The invention belongs to the technical field of metal nanosheets, and relates to a preparation method of a metal nanosheet, the metal nanosheet, application and a cathode active material. The preparation method of the metal nanosheet comprises the following steps that metal foil is provided, the surface of the metal foil is coated with an organic coating, then the metal foil coated with the organic coating is folded and pressed multiple times, and a metal-organic coating composite sheet is obtained; and a metal sheet and the organic coating in the metal-organic coating composite sheet are separated to obtain the metal nanosheet. The technology is simple, implementation is easy, the technological process is simplified, and the selection range of two-dimensional nanocrystallization metal canbe expanded; the material preparation cost can be reduced, and chemical waste liquid can be reduced; and the preparation methodis green and environment-friendly, energy consumption is low, and a two-dimensional metal nanomaterial high in purity and good in quality can be obtained.

Description

technical field [0001] The invention belongs to the technical field of metal nanosheets, and in particular relates to a preparation method of metal nanosheets, metal nanosheets, uses and negative electrode active materials. Background technique [0002] In recent years, nano-two-dimensional materials have been widely studied because of their main advantages: 1. Since the two-dimensional plane restricts the three-dimensional movement of electrons, electrons will be transported faster on the two-dimensional plane; 2. Two-dimensional materials It has a large specific surface area; 3. Two-dimensional materials can prepare high-quality single films; 4. Two-dimensional materials have excellent mechanical strength, flexibility and optical transparency; 5. The high exposure of surface atoms provides , element doping and / or defect, strain, phase engineering and other means to easily adjust the conditions of material properties. [0003] At present, for the cheap metals in the tradit...

Claims

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Application Information

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IPC IPC(8): C21D1/26
CPCC21D1/26
Inventor 唐永炳谢东豪张苗
Owner SHENZHEN INST OF ADVANCED TECH
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