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A kind of preparation method of nanoporous antimony-nickel alloy

A nanoporous, nickel alloy technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems restricting commercial applications, and achieve the effect of simple and fast preparation process

Inactive Publication Date: 2018-09-14
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, current reports on antimony-nickel alloys mainly focus on the preparation of zero-dimensional antimony-nickel alloy nanocrystals by solvothermal method. The preparation of nanoporous antimony-based alloys, including antimony-nickel alloys, still faces great challenges, which restricts the development of antimony-based alloys. Commercial applications including antimony-nickel alloys in lithium / sodium-ion battery anode materials

Method used

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  • A kind of preparation method of nanoporous antimony-nickel alloy
  • A kind of preparation method of nanoporous antimony-nickel alloy
  • A kind of preparation method of nanoporous antimony-nickel alloy

Examples

Experimental program
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Effect test

Embodiment 1

[0029] (1) Dissolve antimony trichloride and potassium nickel cyanide in dimethylformamide respectively to form solutions with a concentration of 5 mol / liter and 0.5 mol / liter, then mix the solutions of antimony trichloride and potassium nickel cyanide , forming antimony trichloride / potassium nickel cyanide organic solvent gel, wherein the molar ratio of antimony trichloride to potassium nickel cyanide is 1:1.

[0030] (2) With the antimony trichloride / potassium nickel cyanide organic solvent gel obtained in step (1) as a precursor, an excessive amount of reducing agent sodium borohydride was added thereto, reacted for 1 hour, and the product was washed and dried to obtain the obtained The nanoporous antimony-nickel alloy described above.

[0031] It can be seen from the transmission electron microscope that the product has a typical nanoporous structure, and the nanoporous structure is a network structure formed by the interconnection of nanoparticles in the three-dimensional...

Embodiment 2

[0033] (1) Dissolve antimony trichloride and potassium nickel cyanide in dimethylformamide respectively to form solutions with a concentration of 5 mol / liter and 0.5 mol / liter, then mix the solutions of antimony trichloride and potassium nickel cyanide , forming antimony trichloride / potassium nickel cyanide organic solvent gel, wherein the molar ratio of antimony trichloride to potassium nickel cyanide is 4:1.

[0034] (2) With the antimony trichloride / potassium nickel cyanide organic solvent gel obtained in step (1) as a precursor, an excessive amount of reducing agent sodium borohydride was added thereto, reacted for 1 hour, and the product was washed and dried to obtain the obtained The nanoporous antimony-nickel alloy described above.

[0035] The result is similar to Example 1. It can be seen from the transmission electron microscope image that the product has a typical three-dimensional porous network structure; it can be seen from the pore size distribution diagram tha...

Embodiment 3

[0037] (1) Dissolve antimony trichloride and potassium nickel cyanide in tetrahydrofuran respectively to form solutions with a concentration of 1 mol / liter and 0.1 mol / liter, and then mix the solutions of antimony trichloride and potassium nickel cyanide to form trichloride Antimony trichloride / potassium nickel cyanide organic solvent gel, wherein the molar ratio of antimony trichloride to potassium nickel cyanide is 2:1.

[0038] (2) With the antimony trichloride / nickel cyanide potassium organic solvent gel obtained in step (1) as a precursor, an equivalent amount of reducing agent hydrazine hydrate was added thereto, reacted for 6 hours, and the product was washed and dried to obtain the obtained The nanoporous antimony-nickel alloy described above.

[0039] The result is similar to Example 1.

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Abstract

The invention discloses a preparation method of a nano-porous antimony-nickel alloy. The method comprises the steps that antimony trichloride and nickel potassium cyanide are dissolved in an organic solvent separately to form solutions with a certain concentration, the antimony trichloride solution and the nickel potassium cyanide solution are mixed according to a certain mole ratio, and antimony trichloride and nickel potassium cyanide organic solvent gel is formed; the organic solvent gel serves as a precursor, an equivalent or excess reducing agent is added to the precursor, a reaction is conducted for 0.1-24 h, a product is washed and dried, and the nano-porous antimony-nickel alloy is obtained. According to the preparation method of the nano-porous antimony-nickel alloy, the antimony trichloride and nickel potassium cyanide organic solvent gel serves as the precursor to prepare the nano-porous antimony-nickel alloy, the nano-porous antimony-nickel alloy is of a three-dimensional porous grid structure, serves as a lithium and sodium ion battery anode material and has the structural and organizational advantages, and an ideal lithium and sodium storage property is shown to meet the requirement of a power battery.

Description

technical field [0001] The invention relates to a preparation method of a negative electrode material of a lithium / sodium ion battery, in particular to a preparation method of a nanoporous antimony-nickel alloy. As a negative electrode material for lithium-ion and sodium-ion batteries, the nanoporous antimony-nickel alloy has unique structural and compositional characteristics, and exhibits ideal lithium / sodium storage performance to meet the needs of power batteries. Background technique [0002] At present, the world is facing two severe challenges of energy crisis and environmental pollution. As a high-performance chemical power source, lithium / sodium-ion batteries have the advantages of high energy density, long cycle life, no memory effect, low self-discharge rate, and environmental friendliness, and are considered as high-energy, large-scale batteries for transportation and energy storage. The ideal choice of power battery is of great significance to the efficient use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/38H01M4/62H01M10/0525H01M10/054B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/364H01M4/38H01M4/626H01M4/628H01M10/0525H01M10/054Y02E60/10
Inventor 吴平张金晶张炜钰于梓洹张晨星唐亚文周益明
Owner NANJING NORMAL UNIVERSITY