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

a fe 2 o 3 |fef 3-2x o x |bi 3+ ,la 3+ Doped iron fluoride layer structure lithium battery positive electrode material and preparation method thereof

A positive electrode material and iron fluoride layer technology, which is applied in the field of high-performance iron fluoride composite lithium battery positive electrode materials, can solve the problems of coating material detachment, lattice mismatch, failure, etc., to improve detachment and improve lithium ion conductivity efficiency and weaken the effect of lithium ion binding

Active Publication Date: 2020-04-07
NINGBO UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after many cycles, the battery material fails due to the detachment of the cladding material from the matrix material due to the lattice mismatch between the cladding material and the matrix material and the volume change of the matrix material during cycling.

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
  • a fe <sub>2</sub> o <sub>3</sub> |fef <sub>3-2x</sub> o <sub>x</sub> |bi <sup>3+</sup> ,la <sup>3+</sup> Doped iron fluoride layer structure lithium battery positive electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: Ammonium fluoride, the amount of 0.8% bismuth nitrate pentahydrate, the amount of iron nitrate nonahydrate 0.8% La(NO 3 ) 3 ·6H 2 O, glycerol and ethylene glycol of 0.8% of ferric nitrate nonahydrate quality are mixed with the mixed liquid of 1: 1 with volume ratio, polyquaternium-7 of ferric nitrate nonahydrate quality 0.8% are mixed and put into ball mill, ball mill and material The mass ratio is 20:1, ball milled at a speed of 200 rpm for 10 hours, the material is taken out after ball milling, washed with water three times, and dried in a drying oven at 100°C for 10 hours to prepare Bi 3+ , La 3+ doped with ferric fluoride; the Bi 3+ , La 3+ Doped ferric fluoride is put into the tube furnace, and the flow rate is 1.5L h -1 A mixed gas of oxygen and argon with a volume ratio of 10:90 is heated up to 180°C at a rate of 2°C / min and kept at this temperature for 10 minutes; after the material is taken out, it is put into an air atmosphere and the temper...

Embodiment 2

[0016] Embodiment 2: Ammonium fluoride, the amount of 3% bismuth nitrate pentahydrate, the amount of 3% La(NO 3 ) 3 ·6H 2 O, glycerol and ethylene glycol of 3% of ferric nitrate nonahydrate quality are mixed with the mixed liquid of 1: 1, the polyquaternium-7 of 3% of ferric nitrate nonahydrate quality by volume and put into ball mill, ball mill and material The mass ratio is 20:1, ball milled at a speed of 300 rpm for 15 hours, after the ball milling is completed, the material is taken out, washed with water three times, and dried in a drying oven at 110°C for 15 hours to prepare Bi 3+ , La 3+ doped with ferric fluoride; the Bi 3+ , La 3+ Doped ferric fluoride is placed in a tube furnace with a flow rate of 5L h -1 The mixed gas of oxygen and argon with a volume ratio of 10:90 is heated up to 220°C at a rate of 5°C / min and kept at this temperature for 15 minutes; after the material is taken out, it is put into an air atmosphere and the temperature is constant. Keep it i...

Embodiment 3

[0017] Embodiment 3: Ammonium fluoride, the amount of 4.5% bismuth nitrate pentahydrate, the amount of iron nitrate nonahydrate 4.5% La (NO 3 ) 3 ·6H 2 O, glycerol and ethylene glycol of 4.5% of ferric nitrate nonahydrate quality are mixed with the mixed liquid of 1: 1 with the volume ratio, polyquaternium-10 of 4.5% of ferric nitrate nonahydrate quality is mixed and put into ball mill, ball mill and material The mass ratio is 20:1, ball milled at a speed of 400 rpm for 20 hours, the material is taken out after ball milling, washed with water three times, and dried in a drying oven at 120°C for 20 hours to prepare Bi 3+ , La 3+ doped with ferric fluoride; the Bi 3+ , La 3+ Doped ferric fluoride is placed in the tube furnace, and the flow rate is 10L h -1 The mixed gas of oxygen and argon with a volume ratio of 10:90 is heated up to 260°C at a rate of 8°C / min and kept at this temperature for 25 minutes; after the material is taken out, it is put into an air atmosphere and ...

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

a kind of Fe 2 o 3 |FeF 3‑2x o x |Bi 3+ , La 3+ Doped iron fluoride layer structure lithium battery positive electrode material and preparation method, the method adopts solid-phase synthesis of Bi 3+ , La 3+ After doping iron fluoride, according to FeF 3 It is easy to be gradually oxidized to Fe at higher temperature 2 o 3 The characteristics of Bi 3+ , La 3+ Doped iron fluoride particles coated with FeF in turn 3‑2x o x , 0<x<0.3, and Fe 2 o 3 layer to increase the Bi 3+ , La 3+ The surface electronic conductivity of doped iron fluoride and the resistance to the harmful effects of organic electrolytes on the surface of material particles; combined with Bi 3+ , La 3+ Doping greatly improves the comprehensive electrochemical performance of ferric fluoride.

Description

technical field [0001] The invention relates to the technical field of a method for manufacturing a high-performance iron fluoride composite lithium battery cathode material. Background technique [0002] Lithium-ion secondary batteries have the absolute advantages of high volume, weight-to-energy ratio, high voltage, low self-discharge rate, no memory effect, long cycle life, and high power density. Currently, the global mobile power market has an annual share of more than 30 billion US dollars and Gradually grow at a rate of more than 10%. Especially in recent years, with the gradual depletion of fossil energy, new energy sources such as solar energy, wind energy, and biomass energy have gradually become alternatives to traditional energy sources. Among them, wind energy and solar energy are intermittent, and a large amount of energy is used simultaneously to meet the needs of continuous power supply. Energy storage batteries; urban air quality problems caused by automobi...

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 Patents(China)
IPC IPC(8): H01M4/36H01M4/58H01M10/0525
CPCH01M4/366H01M4/582H01M10/0525Y02E60/10
Inventor 方敏华水淼李月陈超李弯弯舒杰任元龙
Owner NINGBO UNIV
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