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

Method for preparing FeNi alloy catalytic growth carbon nanotube material through electromagnetic induction heating method

A technology of electromagnetic induction heating and carbon nanotubes, applied in the fields of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problems of selenium fixation difficulties, selenium difficulties, small tube diameters, etc., and achieve excellent sodium The effect of ion storage performance, reduction of agglomeration, and enhancement of load capacity

Pending Publication Date: 2021-06-04
SHAANXI UNIV OF SCI & TECH
View PDF14 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the diameter of carbon nanotubes is small, so it is difficult to load selenium inside the tubes, and the surface defects of carbon nanotubes are few, so it is difficult to fix selenium.

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
  • Method for preparing FeNi alloy catalytic growth carbon nanotube material through electromagnetic induction heating method
  • Method for preparing FeNi alloy catalytic growth carbon nanotube material through electromagnetic induction heating method
  • Method for preparing FeNi alloy catalytic growth carbon nanotube material through electromagnetic induction heating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Step 1: fully grind 0.1g iron oxalate, 0.9g nickel nitrate, and 2g melamine in a mortar;

[0025] Step 2: Put the ground solid powder in a crucible in a sealed glove box under an argon atmosphere. Under an induction alternating magnetic field environment, the material in the crucible cuts the magnetic induction line to generate an induced current, so that the material in the crucible is Heating, the temperature is controlled at 700°C, and the product is naturally cooled to collect the product;

[0026] Step 3: Stand the obtained product in nitric acid with a concentration of 3M, corrode for 12 hours, separate the remaining solid, and dry;

[0027] Step 4: Mix the product obtained in Step 3 with selenium powder at a ratio of 2:3, place it in a reaction kettle under an argon atmosphere in a sealed glove box, heat it to 260°C in a homogeneous reactor, and keep it warm for 12 hours to obtain FeNi@ Se / C.

Embodiment 2

[0029] Step 1: fully grind 0.05g iron oxalate, 0.95g nickel nitrate, and 2g urea in a mortar;

[0030] Step 2: Put the ground solid powder in a crucible in a sealed glove box under an argon atmosphere. Under an induction alternating magnetic field environment, the material in the crucible cuts the magnetic induction line to generate an induced current, so that the material in the crucible is Heating, the temperature is controlled at 600°C, and the product is collected after natural cooling to obtain the product;

[0031] Step 3: Stand the obtained product in nitric acid with a concentration of 1M, corrode for 12 hours, separate the remaining solid, and dry;

[0032] Step 4: Mix the product obtained in Step 3 with selenium powder at a ratio of 1:4, place it in a reaction kettle under an argon atmosphere in a sealed glove box, heat it to 260° C. in a homogeneous reactor, and keep it warm for 12 hours to obtain FeNi@ Se / C.

Embodiment 3

[0034] Step 1: Fully grind 0.3g iron oxalate, 0.2g nickel nitrate, and 2g urea in a mortar,

[0035] Step 2: Put the ground solid powder in a crucible in a sealed glove box under an argon atmosphere. Under an induction alternating magnetic field environment, the material in the crucible cuts the magnetic induction line to generate an induced current, so that the material in the crucible is Heating, the temperature is controlled at 300°C, and the product is collected after natural cooling to obtain the product;

[0036] Step 3: Stand the obtained product in nitric acid with a concentration of 0.5M, corrode for 12 hours, separate the remaining solid, and dry;

[0037] Step 4: Mix the product obtained in Step 3 with selenium powder at a ratio of 1:4, place it in a reaction kettle under an argon atmosphere in a sealed glove box, heat it to 260°C in a homogeneous reactor, and keep it warm for 10 hours to obtain FeNi@ Se / C.

[0038] The sample that embodiment 1 is made observes un...

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

No PUM Login to View More

Abstract

The invention discloses a method for preparing a FeNi alloy catalytic growth carbon nanotube by an electromagnetic induction heating method. The method comprises the following steps of: 1, weighing an iron source, a nickel source and a carbon source in proportion, fully mixing and grinding; 2, in an induction alternating magnetic field environment and an inert gas atmosphere, placing the mixture in a crucible, cutting magnetic induction lines of the material, generating induction current, heating, controlling the temperature at 300-700 DEG C, naturally cooling a product, and collecting the product; 3, standing the product obtained in the step 2 in nitric acid, corroding 70% of the FeNi alloy, separating out residual solids, and drying; 4, mixing the product obtained in the step 3 with selenium powder in proportion, placing the mixture in a reaction kettle in a sealed glove box under the inert gas atmosphere, heating the mixture to 100-300 DEG C in a homogeneous reaction instrument, and keeping the temperature for 6-12 hours to obtain a product FeNi(at)Se / C. The nanotube has excellent sodium ion storage performance, high charge-discharge capacity and good rate capability; the conductivity and the structural stability of the material in the charging and discharging process can be obviously improved.

Description

technical field [0001] The invention belongs to the field of composite material synthesis, and relates to the preparation of carbon nanotube materials, in particular to a method for preparing FeNi alloy catalyzed growth carbon nanotube materials by an electromagnetic induction heating method. Background technique [0002] The application of electrochemical energy storage technology has effectively solved the problems of storage, utilization and conversion of clean energy, and has broad development prospects in the future. At present, lithium-ion batteries are widely used in the field of electrochemical energy storage due to their excellent performance such as high energy density, high energy conversion rate and good safety. However, with the continuous research on lithium-ion batteries, the capacity of lithium-ion batteries has become difficult to increase. In order to meet the growing demand for large-scale energy storage equipment, we began to turn our attention to other ...

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): H01M4/62H01M4/38H01M10/052B82Y30/00B82Y40/00
CPCH01M4/38H01M4/625H01M4/628H01M4/62H01M10/052B82Y30/00B82Y40/00H01M2004/028H01M2004/021Y02E60/10
Inventor 李嘉胤胡云飞钱程张金津黄剑锋曹丽云许占位
Owner SHAANXI UNIV OF SCI & 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