Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of tin nanoparticles and lithium ion battery negative electrode material

A nanoparticle and precursor technology, applied in the nanometer field, can solve the problems of uniformity, inability to effectively prepare particle size, etc., and achieve the effect of simple method, simple operation and narrow particle size distribution.

Inactive Publication Date: 2020-01-03
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for preparing tin nanoparticles, aiming to solve the technical problem that the prior art cannot effectively prepare tin nanoparticles with uniform particle size and small size

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of tin nanoparticles and lithium ion battery negative electrode material
  • Preparation method of tin nanoparticles and lithium ion battery negative electrode material
  • Preparation method of tin nanoparticles and lithium ion battery negative electrode material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] A method for preparing a quantum dot material, comprising the steps of:

[0024] S01. Provide tin precursors, tungsten hexacarbonyl, oleylamine, hexamethyldisilazane and non-coordinating solvents;

[0025] S02, in an inert atmosphere, dissolve the tin precursor, the tungsten hexacarbonyl, the oleylamine and the hexamethyldisilazane in the non-coordinating solvent to obtain a mixture; then, The mixture is heated to obtain the tin nanoparticles.

[0026] The preparation method of tin nanoparticles provided in the embodiment of the present invention uses tungsten hexacarbonyl as a reducing agent, oleylamine and hexamethyldisilazane as a ligand, and a non-coordinating solvent as a reaction solvent. Under this condition, tin nanoparticles with uniform particle size and small size are prepared, the particle size distribution is narrow, and the standard deviation of the average particle size is only 6%-8%. The method is simple and easy to operate, and each reaction raw mater...

Embodiment 1

[0046] The present embodiment has prepared a kind of preparation method of tin nanoparticle, specifically comprises the following steps:

[0047] Weigh 40 mg of stannous chloride (99% analytically pure, Alfa Aesar) in the glove box and put it into a glass bottle, then add oleylamine (1 mL, 70% analytically pure, Aldrich) and 1 - Octadecene (ODE, 9 mL, 90% analytically pure, Aldrich), sealed and sonicated until a white suspension was obtained. Then, take a three-necked flask and add 10 mg tungsten carbonyl (W(CO) 6 , 97% analytically pure, Alfa Aesar), select a suitable condenser tube, heating mantle, thermocouple and rubber stopper, and seal the reaction device well. Then vacuumize the inside of the bottle for 1 hour, then fill it with Ar gas, inject the suspension after ultrasonication and 0.75mL hexamethyldisilazane (HMDS, 99% analytically pure, Aldrich) into the three-necked bottle, press 10 ℃ Heat to 60°C at a heating rate of 10°C / min and keep it for about 10 minutes to ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of nanometer and particularly relates to a preparation method of tin nanoparticles and a lithium ion battery negative electrode material. The preparation method comprises steps that in an inert atmosphere, tin precursor, tungsten hexacarbonyl, oleylamine and hexamethyldisilazane are dissolved in non-coordination solvent to obtain mixture; the mixture issubjected to heating reaction, after the reaction is finished, reaction liquid is cooled to the room temperature and subjected to solid-liquid separation treatment, and the tin nanoparticles are obtained. The preparation method is advantaged in that tungsten hexacarbonyl is adopted as reducing agent, oleylamine and hexamethyldisilazane are adopted as ligands, the non-coordination solvent is adopted as reaction solvent, under the synergistic effect of all reaction raw material, the tin nanoparticles uniform in particle size and small in size are prepared, the particle size distribution is narrow, and the average particle size standard deviation is only 6%-8%. The method is advantaged in that the method is simple, operation is easy and convenient, all the reaction raw material substances are low in toxicity and high in efficiency, and large-scale production of the tin nanoparticles is easy.

Description

technical field [0001] The invention belongs to the field of nanotechnology, and in particular relates to a preparation method of tin nanoparticles and a lithium ion battery negative electrode material. Background technique [0002] Tin (Sn), as a common metal, has been widely used in daily life, such as food packaging, containers, metal welding, etc. In addition, due to the high theoretical capacity of Sn (e.g., 994mAh / g), tin-based anode materials are considered to be one of the ideal substitutes for commercial graphite-like carbon materials (372mAh / g) to meet the next-generation high-capacity Li-ion battery needs. However, there is a big problem with tin as a negative electrode material. Similar to other alloy types of negative electrode materials, the tin negative electrode undergoes huge volume expansion (about 300%) during charge and discharge, and the internal stress generated by the volume expansion will lead to electrode material powder. Melting and peeling off, r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/38H01M10/0525B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/387H01M10/0525Y02E60/10
Inventor 权泽卫赵西夏
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com