Preparation method of ternary anode material of lithium ion battery

A lithium-ion battery, cathode material technology, applied in battery electrodes, electrical components, circuits, etc., can solve the problems of fast decay rate and high specific capacity, and achieve the effects of stable performance, stable electrochemical performance and uniform composition

Active Publication Date: 2014-01-15
BEIJING DINGNENG KAIYUAN BATTERY TECH
View PDF10 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the electrochemical performance of 622-type and 811-type ternary

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
  • Preparation method of ternary anode material of lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] To obtain 100g (1.1mol) LiNi 0.3 co 0.3 mn 0.3 o 2 Taking the positive electrode material as an example, the required raw materials are 82.12g (0.33mol) of analytically pure nickel oxalate, 82.20g (0.33mol) of cobalt oxalate, 80.88g (0.33mol) of manganese oxalate, and 46.17g (1.1mol) of lithium hydroxide hydrate.

[0029] Mix the raw materials, add 500g of anhydrous alcohol, put them into a ball mill (ball mill model: BXQM2L, Nanjing Telun New Instrument Co., Ltd.) and mix for 2 hours, and put the mixed and milled wet material in a vacuum of 0.01MPa at a temperature of 100°C Dry for 12 hours to obtain a mixed reaction powder for subsequent use. Put the reaction powder into the feeder of the plasma spraying equipment with a screw feeder at a speed of 1g / s, and then scrape the powder into the high-temperature (temperature 3500°C) plasma melting chamber with a voltage of 10,000 V. The plasma gas is pure oxygen. Utilize the high-temperature instant heating of high-temp...

Embodiment 2

[0033] To obtain 50g (0.55mol) LiNi 0.5 co 0.2 mn 0.3 o 2 Taking the positive electrode material as an example, the required raw materials are composed of 68.44g (0.275mol) of analytically pure nickel oxalate, 27.4g (0.11mol) of cobalt oxalate, 40.44g (0.165mol) of manganese oxalate, and 20.08g (0.55mol) of hydrated lithium hydroxide raw materials.

[0034] Mix the raw materials, then add 200g of absolute alcohol, put it into a ball mill and mix for 6 hours, dry the mixed and ground wet material in a vacuum of 0.01MPa, at 110°C for 12 hours, and get the mixed reaction powder for later use . Put the reaction powder into the feeder of the plasma spraying equipment, and then scrape the powder into the high-temperature plasma melting chamber after adding voltage (cavity gas: 50% oxygen plus 50% air), using 50,000 V high temperature The high-temperature instant heating of air plasma, the feeding speed is 100g / s, the reaction powder reacts immediately, and LiNi is formed rapidl...

Embodiment 3

[0037] To obtain 100g (1.1mol) LiNi 0.5 co 0.2 mn 0.3 o 2 Taking the positive electrode material as an example, the required raw materials are composed of 136.87g (0.55mol) of analytically pure nickel oxalate, 54.80g (0.22mol) of cobalt oxalate, 80.88g (0.33mol) of manganese oxalate, and 46.17g (1.1mol) of hydrated lithium hydroxide raw materials.

[0038] Mix the raw materials, add 1000g of absolute alcohol, put it into a ball mill and mix for 8 hours, dry the mixed and ground wet material in a vacuum of 0.01MPa, at 120°C for 6 hours, and get the mixed reaction powder for later use. The reaction powder is put into the feeder of the plasma spraying equipment, and then the powder is scraped into the high-temperature plasma melting chamber after the voltage is added, and the high-temperature gas plasma of 40,000 V high-temperature air plasma (50% oxygen plus 50% air) high temperature instantaneous heating, the reaction powder reacts immediately and quickly forms LiNi 0.5 co...

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
Discharge specific capacityaaaaaaaaaa
Specific surface areaaaaaaaaaaa
The average particle sizeaaaaaaaaaa
Login to view more

Abstract

A preparation method of a ternary anode material of a lithium ion battery comprises the steps of: 1) uniformly mixing nickel salt, cobalt salt, manganese salt, and a lithium compound at a stoichiometric ratio of (2-6):(2-3):(2-4):1, 2) grinding for 2-8h by taking alcohol as a grinding medium, 3) drying a mixture ground in Step 2) at 100-120 DEG C, obtaining reaction powder, 4) applying plasma electric arc on the reaction powder to fuse the reaction powder, and 5) injecting the fusion reaction powder into a cooling device with oxidizing gas, and forming a spherical fine particle through oxidation and cooling. With the adoption of the preparation method of the ternary material, the ternary anode material can be synthesized quickly and conveniently, is regular in morphology, is highly spherical, and has stable electrochemical performances, high purity and uniform components. According to the method, the ternary anode material with the uniform components and stable performances can be quickly synthesized through plasma high-temperature fusion of ingredients.

Description

technical field [0001] The invention relates to the field of electrode materials, in particular to a method for manufacturing an electrode material with a ternary layered structure. Background technique [0002] Lithium-ion batteries are a new generation of green high-energy batteries. They have many advantages such as high voltage, high energy density, good cycle performance, small self-discharge, no memory effect, and wide operating temperature range. They are widely used in phones, laptops, and power tools. It also has good application prospects in electric vehicles, and is considered to be an important high-energy technology product in the 21st century. Recently, the ternary layered Li[Ni-Co-Mn]O 2 Due to its high discharge capacity, good safety performance, and low toxicity, cathode materials for lithium-ion batteries have become a hot research topic today. It incorporates LiCoO 2 The excellent cycle performance of LiNiO 2 high discharge capacity, and LiMnO 2 Excel...

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): H01M4/505H01M4/525
CPCH01M4/505H01M4/525Y02E60/10
Inventor 刘登科刘宇朱志强
Owner BEIJING DINGNENG KAIYUAN BATTERY TECH
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