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Bismuth-based nano material as well as preparation method and application thereof

A nanomaterial, bismuth nanotechnology, applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems such as the capacity and durability of bismuth-based negative electrode materials to be improved, and achieve improved electrochemical performance. Cycling performance, loss avoidance, effect of excellent electrochemical performance

Inactive Publication Date: 2021-07-23
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although there are many preparation methods and types of bismuth-based negative electrode materials, the capacity and durability of bismuth-based negative electrode materials currently reported still need to be improved.

Method used

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  • Bismuth-based nano material as well as preparation method and application thereof
  • Bismuth-based nano material as well as preparation method and application thereof
  • Bismuth-based nano material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 0.5 g of PAN was added to 6 ml of DMF, stirred for 12 h to obtain a solution A.

[0046] 0.49 g of a five-nitrate, 0.1 g of dithiamine and 1.2 ml of DMF were added to the centrifuge tube, stirred to clear and transparent, add solution A, and purge the centrifuge tube with 0.2 ml of DMF and add the cleaning liquid to the solution together. A. Then at 35 ° C for 35min (1000 rpm), the precursor solution was obtained.

[0047] Electrostatic spun is carried out using a precursor solution. Specific electrostatic spinning operation figure 1 As shown, a 1ml syringe is used to absorb the precursor solution and a flat needle of a specification is 20 g, and then the syringe is placed in a microjet pump, and a layer of aluminum foil is placed on the roller as a collector. A 10 kV voltage is applied to the needle, and the distance from the needle tippage receiver is 12.5 cm, and the fiber material is collected after the end.

[0048] The fibrous material was removed in the porcelain boat,...

Embodiment 2

[0053] This embodiment provides a bismuth-based nanomaterial, and the solar difference of the preparation method and Example 1 is to adjust the mass of the diodide to 0.2 g.

[0054] The specific preparation method is as follows:

[0055] 0.5 g of PAN was added to 6 ml of DMF, stirred for 12 h to obtain a solution A.

[0056] 0.49 g of a five-nitrate, 0.2 g of dithiamine and 1.2 ml of DMF were added to the centrifuge tube, stirred to clear and transparent and added solution A for mixing, and was purified with 0.2 ml of DMF to clean the centrifuge tube and add the cleaning liquid to the solution together A. Then at 35 ° C for 35min (1000 rpm), the precursor solution was obtained.

[0057] Electrostatic spun is carried out using a precursor solution. Specific electrostatic spinning operation figure 1 As shown, a 1ml syringe is used to absorb the precursor solution and use a flat needle head of 20 g, and then the syringe is placed in a microjet pump. A layer of aluminum foil is place...

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Abstract

The invention discloses a bismuth-based nano material and a preparation method and application thereof. The bismuth-based nano material comprises bismuth nanoparticles and nitrogen-doped porous carbon fibers, and the nitrogen-doped porous carbon fibers wrap the bismuth nanoparticles. The preparation method of the bismuth-based nano material comprises the steps of: dissolving a carbon source, a bismuth source and a nitrogen-containing pore forming agent in a solvent to obtain a precursor solution, and preparing a fiber material by taking the precursor solution as a raw material; and pre-oxidizing the fiber material, and calcining the fiber material in a protective atmosphere to obtain the bismuth-based nano material. The bismuth-based nano material prepared by the method has excellent electrochemical performance, especially super-long cycle stability, is superior to a bismuth-based negative electrode material reported in related technologies, and has a wide application prospect in alkaline batteries.

Description

Technical field [0001] The present invention relates to the field of electrode material, and more particularly to a bismuth-based nanomaterial and a preparation method thereof. Background technique [0002] With the development of social science and technology, people's clothes are inseparable from the support of energy. Small mobile phones and tablets, etc., large to electric vehicles, smart grids, etc. have become an indispensable part of life. However, the traditional energy reserves are limited, and the cost of exploitation has become a problem that the society cannot be ignored today. The new energy such as solar energy, the use of wind energy is strong on the environment, so it is urgently necessary to develop efficient and environmentally friendly energy. [0003] The battery is mainly used in three major industries, ie electric vehicles, energy storage and consumer electronics. Focusing on these three directions, especially in recent years, rapid development of electric v...

Claims

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Application Information

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IPC IPC(8): H01M4/38H01M4/24H01M4/62H01M4/04H01M10/24B82Y30/00B82Y40/00
CPCH01M4/38H01M4/625H01M4/04H01M4/24H01M10/24B82Y30/00B82Y40/00Y02E60/10
Inventor 周凯郭欣颖牛利韩冬雪王昊宇
Owner GUANGZHOU UNIVERSITY
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