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

Synthesis process of nickel-cobalt lithium manganate anode material

A technology of nickel cobalt lithium manganate and synthesis process, applied in battery electrodes, electrical components, electrochemical generators, etc., can solve the problems of poor repeatability and complicated operation, and achieve the effect of uniform particle distribution and uniform particle size.

Inactive Publication Date: 2016-06-15
LIUZHOU KAITONG NEW MATERIAL TECH CO LTD
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the preparation methods of nickel-cobalt-manganese-lithium cathode materials include high-temperature solid-phase method, coprecipitation method, sol-gel method, spray pyrolysis method, hydrothermal synthesis method and combustion method, etc., but coprecipitation method is still used more. This method is complicated to operate, has poor repeatability and requires strict control of experimental conditions, which limits the industrial production and practical application of nickel-cobalt-manganese-lithium cathode materials to a certain extent.

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

Embodiment 1

[0028] Weigh Mn(NO 3 ) 2 , CoCO 3 , Ni(NO 3 ) 2 ·6H 2 O and Li 2 CO 3 , Add concentrated HNO slowly 3 , And then put the dissolved reactant in a constant temperature water bath at 60°C for 2.5h; then add 25% citric acid of the reactant while stirring until the liquid becomes viscous and a gel is obtained; after drying the gel Place it in a planetary ball mill and add an appropriate amount of absolute ethanol, and then use the ball-to-material mass ratio to be 8:1, ball milling at a speed of 180 / min for 4.5 hours, and then place the ball-milled slurry in a drying box at 60°C for drying. The precursor is obtained; the precursor is calcined at 450℃ for 5h; after calcining, it is ground and then calcined at 800℃ for 10h to obtain the nickel cobalt manganese lithium cathode material . The performance test of this material obtained: the first charge-discharge specific capacity was 249mAh / g, 225mAh / g; from the second week, the charge-discharge efficiency reached 98% or more, the 20th ...

Embodiment 2

[0030] Weigh Mn(NO 3 ) 2 , CoCO 3 , Ni(NO 3 ) 2 ·6H 2 O and Li 2 CO 3 , Add concentrated HNO slowly 3 , And then put the dissolved reactant in a constant temperature water bath at 70℃ for 2h; then add 25% citric acid of the reactant while stirring, until the liquid becomes viscous and a gel is obtained; after drying the gel Put an appropriate amount of absolute ethanol in a planetary ball mill, then ball mill the ball with a mass ratio of 8.5:1, 200 / min for 4 hours, and then place the ball milled slurry in a drying oven at 70°C to obtain a precursor Body; the precursor is pre-fired, the pre-fire temperature is 500 ℃, the time is 4.5h; after pre-fire, the grinding is carried out, and then calcined, the calcination temperature is 850 ℃, the time is 9.5h, to obtain the nickel cobalt manganese lithium cathode material . The performance test of the material obtained: the first charge-discharge specific capacity was 256mAh / g, 237mAh / g; from the second week, the charge-discharge effic...

Embodiment 3

[0032] Weigh Mn(NO 3 ) 2 , CoCO 3 , Ni(NO 3 ) 2 ·6H 2 O and Li 2 CO 3 , Add concentrated HNO slowly 3 , And then put the dissolved reactant in a constant temperature water bath at 80°C for 1.5h; then add 25% citric acid of the reactant while stirring until the liquid becomes viscous and a gel is obtained; after drying the gel Place it in a planetary ball mill and add an appropriate amount of anhydrous ethanol, and then use the ball-to-material mass ratio to be 9:1 at a rotating speed of 220 / min for 3.5h, and then place the ball-milled slurry in a drying box at 80°C for drying. The precursor is obtained; the precursor is calcined at a temperature of 550°C and the time is 4h; after the calcining, it is ground and then calcined at a temperature of 900°C and the time is 9h to obtain a nickel cobalt manganese lithium cathode material . The performance test of the material obtained: the first charge-discharge specific capacity was 235mAh / g, 211mAh / g; from the second week, the charge-...

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 nickel-cobalt lithium manganate anode material, in particular to a synthesis process of the nickel-cobalt lithium manganate anode material. The synthesis process comprises the following steps: weighing Mn(NO3)2, CoCO3, Ni(NO3)2*6H2O and Li2CO3 as per a stoichiometric ratio, adding concentrated HNO3 for dissolving and reaction, and putting dissolved reactants into a constant-temperature water bath; stirring while adding citric acid until the liquid is sticky to obtain gel; drying the gel, adding a disperser for mechanical activation; placing activated slurry into a drying oven for drying to obtain a precursor; pre-sintering the precursor; grinding and roasting the pre-sintered precursor to obtain the nickel-cobalt lithium manganate anode material. According to the technical scheme, a sol-gel method is adopted to synthesize the nickel-cobalt lithium manganate anode material; in the synthesis process, the precursor is mechanically activated, so that precursor particles are uniformly distributed, with even particle sizes; due to pre-sintering and roasting, the nickel-cobalt lithium manganate anode material with excellent electrochemical property is obtained.

Description

Technical field [0001] The invention relates to a nickel-cobalt-manganese lithium battery cathode material, in particular to a synthesis process of a nickel-cobalt-manganese lithium battery anode material. Background technique [0002] In recent years, new lithium-ion composite cathode materials have developed rapidly, especially nickel-cobalt-manganese-lithium cathode materials, which have become a hot spot for domestic and foreign experts and scholars. And commercial LiCoO 2 In comparison, nickel-cobalt-manganese-lithium cathode materials have the advantage of low cost; compared with LiNiO 2 In comparison, nickel-cobalt-manganese-lithium cathode materials are easier to synthesize, and the cycle performance and thermal stability are relatively good; relative to spinel LiMn 2 O 4 In other words, the structure of the nickel-cobalt-manganese-lithium cathode material is more stable during the charge and discharge process, the Jahn-Teller effect will not occur, and the Mn ions are sta...

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): H01M4/505H01M4/525H01M10/0525
CPCH01M4/505H01M4/525H01M10/0525Y02E60/10
Inventor 黎超英吴沛荣
Owner LIUZHOU KAITONG NEW MATERIAL TECH CO LTD
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com