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Doped and mixed nanophase material and preparation method and application thereof

A technology of nanophase and powder materials, applied in the field of materials science, can solve the problems of unfavorable large-scale production and high cost, and achieve the effect of small particle size, good conductivity and concentrated particle size distribution

Inactive Publication Date: 2016-06-22
INST OF PHYSICS - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of raw materials and equipment for these methods is high, and there are serious safety hazards in the process of preparing silane and the process of gas-phase cracking at the same time, which is not conducive to large-scale production

Method used

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  • Doped and mixed nanophase material and preparation method and application thereof
  • Doped and mixed nanophase material and preparation method and application thereof
  • Doped and mixed nanophase material and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1 of the present invention provides a kind of preparation method of mixing nano-phase silicon material, and described method comprises the following steps:

[0031] Add silicon powder materials with a particle size of 5 μm to ethylene glycol at a solid content of 20%, and at the same time add boron oxide and dodecylbenzenesulfonic acid to ethylene glycol, disperse evenly at high speed, and dry , added to a ball mill for initial grinding, after initial grinding for 2 hours, added to a circulating grinder or a high-energy ball mill containing zirconia balls with a particle size of 0.1mm for fine grinding at a temperature of 50°C, and finely ground for 10 hours, except After magnetization, a homogeneously mixed nano-phase silicon material with a particle size of 150nm is prepared, such as figure 1 shown.

[0032] The method provided in this embodiment is simple, easy to implement, low in cost, and suitable for applications that can be manufactured on a large sc...

Embodiment 2

[0034] Embodiment 2 of the present invention provides a kind of preparation method of mixing nano-phase silicon material, described method comprises the following steps:

[0035] Add silicon powder materials with a particle size of 5 μm to ethylene glycol at a solid content of 20%, and at the same time add boron oxide and dodecylbenzenesulfonic acid to ethylene glycol, disperse evenly at high speed, and dry , added to a ball mill for initial grinding, after initial grinding for 2 hours, added to a circulating grinder or a high-energy ball mill containing zirconia balls with a particle size of 0.1mm for fine grinding, at a temperature of 50°C, for 20 hours of fine grinding, except After magnetization, a mixed nano-phase silicon material with a particle size of 100nm is prepared, such as figure 2 shown.

Embodiment 3

[0037] Embodiment 3 of the present invention provides a kind of preparation method of mixing nano-phase silicon material, described method comprises the following steps:

[0038] Add silicon powder materials with a particle size of 100nm to ethylene glycol at a solid content of 20%, and at the same time add boron oxide and dodecylbenzenesulfonic acid to the solvent, disperse evenly at high speed, and after drying, add Put it into a ball mill for initial grinding. After 2 hours of initial grinding, add it to a circulating grinder or a high-energy ball mill containing zirconia balls with a particle size of 0.5mm for fine grinding at a temperature of 50°C for 2 hours. After demagnetization , to prepare a mixed nano-phase silicon material with a particle size of 100nm.

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Abstract

The invention relates to a doped and mixed nanophase material and a preparation method and application thereof.The preparation method includes the steps that a powder material, a material and a dispersing agent are added to solvent and dispersed evenly, preliminary grinding and fine grinding are conducted, magnetism removing is conducted, and the doped and mixed nanophase material is obtained; the particle size of the doped and mixed nanophase material prepared through the method is 1 nm-500 nm, and the doped and mixed nanophase material can serve as the key material of a precursor of the key material of a lithium ion battery, a lithium ion capacitor, a lithium sulphur battery, a all-solid-state battery, a solar cell and the like.

Description

technical field [0001] The invention relates to the field of materials science, in particular to a mixed nano-phase material and its preparation method and application. Background technique [0002] At present, the commonly used anode materials for lithium-ion batteries are carbon anode materials (including graphite, soft carbon and hard carbon) and Li 4 Ti 5 o 12 , but their gram capacity is limited, which is not conducive to the development and design of high energy density lithium-ion batteries. The industry has an urgent demand for high-energy-density lithium-ion batteries. Therefore, there is an urgent need to develop high-capacity and high-stability electrode materials. [0003] Materials such as silicon, tin, germanium, antimony, aluminum, and magnesium are new high-capacity anode materials and have great potential as anode materials for next-generation lithium-ion batteries. When this type of material intercalates lithium, it can form an alloy with lithium, such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/18C01B35/10B82Y30/00
CPCC01B33/18C01B35/1027C01P2002/72C01P2004/03C01P2004/62C01P2004/64C01P2004/80C01P2006/40
Inventor 罗飞董金平刘柏男褚赓陆浩李泓
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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