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

SnO2@PPy interconnection nano-sheet structural material as well as preparation method and application thereof

A technology of structural materials and internal connections, which is applied in the field of nanomaterials and electrochemistry, can solve the problems of damaging cycle performance and low lithium ion conductivity, and achieve the effects of suppressing rupture, suppressing capacity fading, and facilitating market promotion

Inactive Publication Date: 2015-05-06
WUHAN UNIV OF TECH
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, SnO 2 Due to the low conductivity of lithium ions, there will be volume expansion during charging and discharging, which will cause damage to the junction and result in poor cycle performance, which limits its application.

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
  • SnO2@PPy interconnection nano-sheet structural material as well as preparation method and application thereof
  • SnO2@PPy interconnection nano-sheet structural material as well as preparation method and application thereof
  • SnO2@PPy interconnection nano-sheet structural material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Add 0.0038mol of SnCl to the container 4 .5H 2 O and 0.031mol of NaOH, then add 30ml of deionized water, stir in air for 30min;

[0025] 2) Add 0.0013mol of NH to the solution 4 F, continue stirring for 30min;

[0026] 3) Put the foamed nickel (a square with a diameter of 2.5cm) that has been cleaned and acidified into the reactor and pour the solution obtained in step 2), and put the reactor into a 200°C oven for hydrothermal reaction for 24h, namely SnO 2 Nickel foam with nanorod arrays;

[0027] 4) Disperse pyrrole monomer in lithium perchlorate acetonitrile solution, wherein the concentration of pyrrole monomer is 10mmol L -1 , the lithium perchlorate concentration is 100mmol L -1 , mixed and stirred for 30min;

[0028] 5) With already grown SnO 2 The nickel foam of the nanorod array was used as the working electrode, the Ag / AgCl was used as the reference electrode, and the platinum electrode was used as the counter electrode to perform electrodeposition ...

Embodiment 2

[0034] 1) Add 0.0038mol of SnCl to the container 4 .5H 2 O and 0.031mol of NaOH, then add 30ml of deionized water, stir in air for 30min;

[0035] 2) Add 0.0013mol of NH to the solution 4 F, continue stirring for 30min;

[0036] 3) Put the foamed nickel (a square with a diameter of 2.5cm) that has been cleaned and acidified into the reactor and pour the solution obtained in step 2), and put the reactor into a 200°C oven for hydrothermal reaction for 24h, namely SnO 2 Nickel foam with nanorod arrays;

[0037] 4) Disperse pyrrole monomer in lithium perchlorate acetonitrile solution, wherein the concentration of pyrrole monomer is 50mmol L -1 , the lithium perchlorate concentration is 50mmol L -1 , mixed and stirred for 30min;

[0038] 5) With already grown SnO 2 The nickel foam of the nanorod array was used as the working electrode, the Ag / AgCl was used as the reference electrode, and the platinum electrode was used as the counter electrode to perform electrodeposition o...

Embodiment 3

[0041] 1) Add 0.0038mol of SnCl to the container 4 .5H 2 O and 0.031mol of NaOH, then add 30ml of deionized water, stir in air for 30min;

[0042] 2) Add 0.0013mol of NH to the solution 4 F, continue stirring for 30min;

[0043] 3) Put the foamed nickel (a square with a diameter of 2.5cm) that has been cleaned and acidified into the reactor and pour the solution obtained in step 2), and put the reactor into a 200°C oven for hydrothermal reaction for 24h, namely SnO 2 Nickel foam with nanorod arrays;

[0044] 4) Disperse pyrrole monomer in lithium perchlorate acetonitrile solution, wherein the concentration of pyrrole monomer is 100mmol L -1 , the lithium perchlorate concentration is 10mmol L -1 , mixed and stirred for 30min;

[0045] 5) With already grown SnO 2 The nickel foam of the nanorod array was used as the working electrode, the Ag / AgCl was used as the reference electrode, and the platinum electrode was used as the counter electrode to perform electrodeposition ...

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
current densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a SnO2@PPy interconnection nano-sheet structural material as well as a preparation method and application thereof. The nano-sheet structural material is of a three-dimensional interconnection structure formed by coating the surfaces of SnO2 nanorods growing on nickel foam with polymer pyrrole (PPy) and is prepared by the following method comprising the following steps: (1) dispersing pyrrole monomer in 50ml lithium perchlorate-acetonitrile solution, mixing and stirring for 30-60 minutes; (2) by taking nickel foam on which SnO2 nanorod arrays grow as a working electrode, Ag / AgCl as a reference electrode and a platinum electrode as a counter electrode, carrying out electrodeposition for 700 seconds at a current density of 2.5mA / cm<2> and washing. The SnO2@PPy interconnection nano-sheet structural material has the beneficial effect of being prepared by depositing polypyrrole through a constant current timing method so that the structural material becomes a potential application material of a lithium-ion battery, is in line with the requirements of green chemistry and is conductive to market promotion.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and electrochemistry, in particular to SnO 2 A PPy interconnected nano sheet structure material and a preparation method thereof, the material can be used as a lithium ion battery negative electrode active material. Background technique [0002] As a green energy storage device, lithium-ion batteries have been widely used in mobile phones, computers, electric vehicles and other fields. Therefore, research on new nanostructures to obtain lithium-ion batteries with higher capacity, good safety performance and low cost has It has become the frontier and hotspot of current research on lithium-ion batteries. while SnO 2 As an anode material for lithium-ion batteries, it has a higher theoretical capacity than graphite currently used, and it has great potential as an anode material for lithium-ion batteries. However, SnO 2 Due to the low conductivity of lithium ions, there will be volume expans...

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): H01M4/36H01M4/139B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/131H01M4/137H01M4/1391H01M4/1399H01M4/362H01M4/483H01M4/602H01M10/0525H01M2004/027Y02E60/10
Inventor 麦立强夏睿张磊许旺旺赵康宁
Owner WUHAN UNIV OF TECH
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