Sodium-ion battery carbon-based negative electrode material and preparation method thereof

A technology for sodium ion batteries and negative electrode materials, applied in battery electrodes, negative electrodes, secondary batteries, etc., can solve the problems of long time required, lack of, and difficult control of process conditions, and achieve the promotion of development, excellent conductivity, excellent Effects of sodium storage properties

Active Publication Date: 2021-10-29
临汾袤源新材料科技有限公司
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent reports a method of activating graphite at high temperature through air and water vapor, but it takes a long time and the process conditions are not easy to co

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] Waste three-membered lithium ion battery positive electrode material 100g and the negative electrode graphite material 100g were mixed, then the vacuum baked 2 h at 1000 ° C; the lithium nickel-cobalt-amphoryanate in the precursor material of the waste triple lithium ion battery was used as an external activator, and the graphite negative electrode Material etching is activated graphite, nickel-manganese acid carbon carbon heat reduction is a low-cost state of nickel oxide, cobalt oxide, manganese oxide and lithium oxide, and lithium oxide sublimation enter the graphite layer to continue the aloscior graphite. After cooling, impregnate and dissolve with a hydrochloric acid having a mass concentration of 10%, to form aqueous hydrochloride, cobalt chloride, chloride, and lithium chloride, filtrate separately soluble active graphite material, and to wash the activity with deionized water. Salt moieties in graphite materials; after the filtrate and water merg...

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 relates to a sodium-ion battery carbon-based negative electrode material and a preparation method thereof, in particular to a nitrogen-doped carbon-based negative electrode material taking a waste lithium ion battery graphite negative electrode material and a nitrogen-containing polymer as raw materials. The nitrogen-doped carbon-based negative electrode material is of a core-shell structure, and the inner core is porous nitrogen-doped active graphite; the nitrogen-doped active graphite is coated with a nitrogen-doped hard carbon shell. The nitrogen-doped carbon-based negative electrode material comprises the following components in percentage by mass: 85-97% of C and 3-15% of N. The specific surface area of the nitrogen-doped carbon-based negative electrode material is 1000-1500m < 2 >/g, and the specific capacity of the nitrogen-doped carbon-based negative electrode material is 400-500mAh/g; and the nitrogen-doped carbon-based negative electrode material is used as a negative electrode material of a novel sodium ion battery; the waste lithium ion battery graphite negative electrode material contains 2-3% of lithium which is used as an internal activating agent of the graphite material; and the nitrogen-containing polymer is one of urea resin, melamine, polyacrylonitrile, polyurethane, polyaniline or polypyrrole. The waste ternary lithium ion battery positive electrode material is used as the activating agent for preparing the active graphite, so that one agent has multiple purposes, and the production cost is reduced.

Description

technical field [0001] The invention relates to a carbon-based negative electrode material for a sodium ion battery and a preparation method thereof, in particular to a nitrogen-doped carbon-based negative electrode material made of waste lithium ion battery graphite negative electrode material and a nitrogen-containing polymer and a preparation method thereof. The invention relates to an ion battery negative electrode material, which belongs to the fields of chemical industry and new energy materials. Background technique [0002] Sodium-ion batteries are considered to be an energy storage product that is very suitable for large-scale applications due to their advantages such as low cost and high safety. Suitable anode materials are one of the keys that limit the commercialization of sodium-ion batteries. Compared with lithium, sodium resources in the earth's crust are very abundant, and they have similar chemical properties, so the development of sodium-ion batteries can l...

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): H01M4/587H01M4/36H01M4/62H01M10/054H01M10/54C01B32/205
CPCH01M4/366H01M4/587H01M4/625H01M10/054H01M10/54C01B32/205H01M2004/021H01M2004/027Y02W30/84Y02E60/10
Inventor 刘炳光周蕾张嘉诚韩璐郭燕云王雪李建生
Owner 临汾袤源新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap