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

SnO2@PPy coaxial nanorod array structure material, preparation method and application of material

A technology of nanorod arrays and structural materials, which is applied in the fields of nanomaterials and electrochemistry, can solve the problems of destroying cycle performance and low lithium ion conductivity, and achieves the effects of inhibiting cracking, inhibiting capacity decay, and facilitating market promotion.

Inactive Publication Date: 2015-05-13
WUHAN UNIV OF TECH
View PDF3 Cites 4 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 coaxial nanorod array structure material, preparation method and application of material
  • SnO2@PPy coaxial nanorod array structure material, preparation method and application of material
  • SnO2@PPy coaxial nanorod array structure material, preparation method and application of material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 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;

[0024] 2) Add 0.0013mol of NH to the solution 4 F, continue stirring for 30min;

[0025] 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), put the reactor into a 200°C oven for hydrothermal reaction for 24h, and obtain Grown SnO 2 Nickel foam with nanorod arrays;

[0026] 4) Disperse pyrrole monomer in 50ml 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;

[0027] 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 electro...

Embodiment 2

[0033] 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;

[0034] 2) Add 0.0013mol of NH to the solution 4 F, continue stirring for 30min;

[0035] 3) Put the foamed nickel (a square with a diameter of 2.5 cm) 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 24 hours to obtain Grown SnO 2 Nickel foam with nanorod arrays;

[0036] 4) Disperse pyrrole monomer in 50ml 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;

[0037] 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 for elect...

Embodiment 3

[0040] 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;

[0041] 2) Add 0.0013mol of NH to the solution 4 F, continue stirring for 30min;

[0042] 3) Put the cleaned and acidified nickel foam (a square with a diameter of 2.5 cm) into the reactor and pour the solution obtained in step 2), and put the reactor into a 200°C oven for hydrothermal reaction for 24 hours.

[0043] 4) Disperse pyrrole monomer in 50ml 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;

[0044] 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 for electrodeposition on a CHI760D electrochemical workstation for 700s, with a cu...

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
Lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to an SnO2@PPy coaxial nanorod array structure and a preparation method of the structure. The coaxial structure grows on foamed nickel, and an SnO2 nanorod surface is coated by a polymer, namely pyrrole. A nanorod of the coaxial structure is 300-600nm in length. The preparation method of the coaxial structure comprises the following steps: 1) dispersing a pyrrole monomer in a lithium perchlorate acetonitrile solution, mixing and stirring for 30min, and 2) taking foamed nickel where an SnO2 nanorod array grows as a working electrode, Ag / AgCl as a reference electrode and a platinum electrode as a counter electrode for electro-deposition for 700s, allowing current density to be 1.6mA / cm<2>, and carrying out washing. The coaxial structure and the method have the benefit that an SnO2@PPy coaxial structure material is prepared by a method of depositing polypyrrole by a constant current timing method. The material becomes a potential application material of a lithium ion battery, meets requirements of green chemistry and facilitates marketed popularization.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and electrochemistry, in particular to SnO 2 The invention discloses a PPy coaxial nanorod array structure and a preparation method thereof, and 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 b...

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
IPC IPC(8): H01M4/36H01M4/48H01M4/62H01M4/04H01M4/131C25D9/02B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/366H01M4/48H01M10/0525Y02E60/10
Inventor 麦立强赵康宁夏睿许旺旺张磊
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