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Composite nano material and preparation method thereof

A composite nanomaterial and nanomaterial technology, which is applied in the application field of nanomaterials, can solve the problems of limited electron transfer speed and electrical conductivity, unsatisfactory charge and discharge performance, etc., achieve good stable cycle performance, improve anti-overcharge performance, prolong The effect of cycle life

Active Publication Date: 2019-09-13
YANGZHOUSRKLE INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limited electron transfer speed and conductivity of carbon, the charge and discharge performance of lithium-ion batteries at high rates is still not ideal.

Method used

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  • Composite nano material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of preparation method of composite nano material for high-performance lithium ion battery, its preparation method comprises the steps:

[0027] (1) SnO 2 / Carbon composite material preparation: first, weigh 8g of SnCl 4 ·5H 2 O joins the preparation solution A in the mixed solvent of dehydrated alcohol and water of 40ml; Add carbon source glucose then in solution A, form uniform and stable solution for subsequent use, the add-on of described carbon source is 15g, then the formed Add the mixed solution into the reactor and add a certain amount of 0.5mol / L NaOH solution into the reactor, then place the reactor in a homogeneous reactor for heat treatment, the heat treatment conditions are: temperature 180°C, time 12 After that, the product was washed, dried, and baked at 450°C for 4 hours under an inert atmosphere to obtain SnO 2 / carbon material;

[0028] (2)V 2 o 5 / Preparation of graphene composite material: get 5g vanadium oxide V0 2 Add it into 30mL of...

Embodiment 2

[0032] A kind of preparation method of composite nano material for high-performance lithium ion battery, its preparation method comprises the steps:

[0033] (1) SnO 2 / Preparation of carbon composite material: first, weigh 12g of SnCl 4 ·5H 2 O joins the preparation solution A in the mixed solvent of dehydrated alcohol and water of 60ml; Add carbon source sucrose then in solution A, form the uniform stable solution for subsequent use, the add-on of described carbon source is 80g, then form The mixed solution was added to the reactor and a certain amount of 0.5mol / L NaOH solution was added to the reactor, and then the reactor was placed in a homogeneous reactor for heat treatment. The heat treatment conditions were: temperature 200°C, time 24 After that, the product was washed, dried, and baked at 550°C for 2 to 10 hours under an inert atmosphere to obtain SnO 2 / carbon material;

[0034] (2)V 2 o 5 / Preparation of graphene composite material: get 10g vanadium oxide V ...

Embodiment 3

[0038] A kind of preparation method of composite nano material for high-performance lithium ion battery, its preparation method comprises the steps:

[0039] (1) SnO 2 / Carbon composite material preparation: first, weigh 10g of SnCl 4 ·5H 2 O joins the preparation solution A in the mixed solvent of dehydrated alcohol and water of 50ml; Then in solution A, add carbon source phenolic resin, form uniform and stable solution for subsequent use, the add-on of described carbon source is 45g, then form The mixed solution of the reaction kettle was added into the reaction kettle and a certain amount of 0.5mol / L NaOH solution was added to the reaction kettle, and then the reaction kettle was placed in a homogeneous reactor for heat treatment. The heat treatment conditions were: temperature 190°C, time: 18 hours; then the product was washed, dried, and baked at 500°C for 6 hours under an inert atmosphere to obtain SnO 2 / carbon material;

[0040] (2)V 2 o 5 / Preparation of graph...

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Abstract

The invention provides a composite nano material and a preparation method thereof. The method comprises the following steps of: firstly, obtaining a SnO2 / carbon material and a V2O5 / graphene compositematerial by adopting a hydrothermal synthesis method, and then obtaining the SnO2 / carbon / V2O5 / graphene composite nano material by adopting a ball milling method. The preparation method is simple and easy to operate, and can provide a new way to the controllable synthesis of the multi-component nano composite. The quaternary composite nano material is used as a whole, so that the electronic conductivity of the electrode material is improved, particularly the first reversible capacity and the rate capability are remarkably improved, the charge and discharge performance of the electrode materialunder high rate is enhanced, the discharge capacity of the electrode material is increased, the attenuation of the battery capacity is reduced, the overcharge resistance of the battery is improved, the cycle life of the electrode material is prolonged, and the electrode material has high electrochemical lithium storage capacity, the good stable cycle performance and the less energy loss, and has avery wide application prospect.

Description

[0001] This application is a divisional application, the application number of the original application is 201611045014.0, the application date is November 24, 2016, and the title of the invention is "a high-performance lithium-ion battery composite nanomaterial and its preparation method". technical field [0002] The invention belongs to the technical field of nanomaterial application, and in particular relates to a composite nanomaterial and a preparation method thereof. Background technique [0003] The study of nanomaterials is a frontier field in today's scientific research, and it is also a hot spot studied by many scientists all over the world. The magic and unknown aspects of nanomaterials have aroused people's widespread attention; the research and application of nanomaterials are currently hot spots and difficulties, and are also the focus of high-tech development. [0004] Nanomaterials refer to materials with a size ranging from 1 to 100 nm. After the particle ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/48H01M4/587H01M4/62H01M10/0525B82Y30/00
CPCB82Y30/00B82Y40/00H01M4/131H01M4/1391H01M4/362H01M4/483H01M4/625H01M10/0525H01M2004/021H01M2004/027Y02E60/10
Inventor 叶澄
Owner YANGZHOUSRKLE INDAL
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