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

Ferric fluoride oxide anode material and preparation method thereof, and lithium ion battery

A lithium-ion battery and ferric oxyfluoride technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of further improvement of reversible specific capacity and cycle performance, improve rate performance and cycle stability, and improve electronic Conductivity, process controllable effect

Active Publication Date: 2021-04-20
INST OF PROCESS ENG CHINESE ACAD OF SCI +1
View PDF10 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes an electron-conducting substances called CFX that can be used for making batteries with better electrical properties such as higher charge/discharge rates or longer cycles without losing their effectiveness over multiple chargings. These materials have been found to improve battery's efficiency and durability when charged under certain conditions.

Problems solved by technology

The technical problem addressed in this patented technology relates to improving the performance (reversible ratio capacity and cycleability) of lithium ion batteries by optimizing their positive electrode material for better energy storage capabilities while also maintaining good reversibility characteristics during charging cycles without compromising its ability to store more than what was previously possible due to poorer battery materials such LiPFs or FePO4.

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
  • Ferric fluoride oxide anode material and preparation method thereof, and lithium ion battery
  • Ferric fluoride oxide anode material and preparation method thereof, and lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment provides an iron oxyfluoride cathode material FeO X f 2-X / C (X=1) preparation method, described preparation method comprises the steps:

[0048] (1) mix iron source, fluorine source, carbon source, reducing agent and solvent, obtain mixed solution; The concentration of metal ion in mixed solution is 2mol / L; The addition of described iron source and reducing agent is to satisfy Fe and reducing agent The molar ratio of the carbon source is 1:0.5; the added amount of the carbon source is to make the molar ratio of Fe in the iron source and C in the carbon source be 1:2; the iron source is ferric nitrate; the fluorine source is fluorine Ammonium borate; The carbon source is sucrose; The reducing agent is ascorbic acid; The solvent is isopropanol;

[0049] (2) The mixed solution obtained in the solvent heat treatment step (1) is subjected to solid-liquid separation after solvent heat treatment to obtain a powder intermediate; the temperature of the solvent...

Embodiment 2

[0052] This embodiment provides an iron oxyfluoride cathode material FeO X f 2-X / C (X=0.5) preparation method, described preparation method comprises the steps:

[0053] (1) mix iron source, fluorine source, carbon source, reducing agent and solvent, obtain mixed solution; The concentration of metal ion in mixed solution is 0.01mol / L; The addition of described iron source and reducing agent is to satisfy Fe and reduction The mol ratio of agent is 1:2; The addition amount of described carbon source is to make the mol ratio of Fe in iron source and C in carbon source be 1:1; Described iron source is ferric chloride; Described fluorine source It is ammonium fluoroborate; the carbon source is glucose; the reducing agent is ascorbic acid; the solvent is n-butanol;

[0054] (2) The mixed solution obtained in the solvent heat treatment step (1) is subjected to solid-liquid separation after solvent heat treatment to obtain a powder intermediate; the temperature of the solvent heat ...

Embodiment 3

[0057] This embodiment provides an iron oxyfluoride cathode material FeO X f 2-X / C (X=0.2) preparation method, described preparation method comprises the steps:

[0058] (1) mix iron source, fluorine source, carbon source, reducing agent and solvent, obtain mixed solution; The concentration of metal ion in mixed solution is 1mol / L; The addition of described iron source and reducing agent is to satisfy Fe and reducing agent The molar ratio of the carbon source is 1:1; the addition of the carbon source is to make the mol ratio of Fe in the iron source and C in the carbon source be 1:4; the iron source is ferrous sulfate; the fluorine source is Ammonium fluoroborate; the carbon source is phenolic resin; the reducing agent is ascorbic acid; the solvent is a mixed solution of n-butanol and isopropanol, wherein the volume ratio of n-butanol and isopropanol is 1 :1;

[0059] (2) The mixed solution obtained in the solvent heat treatment step (1) is subjected to solid-liquid separa...

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 provides a ferric fluoride oxide anode material and a preparation method thereof, and a lithium ion battery. The chemical composition of the ferric fluoride oxide anode material is FeOXF2-X/C, wherein X is greater than 0 and is less than or equal to 1. The preparation method comprises the following steps: mixing an iron source, a fluorine source, a carbon source, a reducing agent and a solvent to obtain a mixed solution; carrying out solvothermal treatment on the obtained mixed solution and then carrying out solid-liquid separation to obtain a powder intermediate; and carrying out heat treatment on the powder intermediate in a protective atmosphere, and cooling to obtain the ferric fluoride oxide anode material. The C in a carbon-coated FeOXF2-X/C provided by the invention can improve the electronic conductivity of the material and alleviate the stress change of the material in a cyclic process; and meanwhile, O with similar properties and smaller relative molecular mass is used for replacing F in ferric fluoride, more Fe-O covalent bonds are introduced into strong ionic ferric fluoride, the conductivity of the material is further improved, and therefore the rate capability and the cycling stability of the material are iincreased.

Description

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

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
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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