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

a doped al 3+ Preparation method of lithium nickel manganese oxide material with regular octahedral morphology

A technology of lithium manganese nickel manganese oxide and body shape, which is applied in the field of preparation of lithium nickel manganese oxide materials doped with Al3+ regular octahedral shape, can solve the problem of no obvious improvement in material performance, unsuitable for lithium nickel manganese oxide modification, liquid phase High cost and other problems of the method, to achieve the effect of improving the rate performance, clear and uniform shape, and high cost performance

Active Publication Date: 2021-03-05
DALIAN UNIV OF TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention of patent number CN201710998751.0 introduces a method of doping lithium nickel manganese oxide, but because the doping process is cumbersome, the cost of the liquid phase method is high, and the performance of the obtained material has not been significantly improved, so it is not suitable Used for the modification of lithium nickel manganese oxide

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 doped al <sup>3+</sup> Preparation method of lithium nickel manganese oxide material with regular octahedral morphology
  • a doped al <sup>3+</sup> Preparation method of lithium nickel manganese oxide material with regular octahedral morphology
  • a doped al <sup>3+</sup> Preparation method of lithium nickel manganese oxide material with regular octahedral morphology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] MnO 2 、Ni(AC) 2 4H 2 O, Al 2 o 3 and LiAC as raw material preparation. Will Al 2 o 3 , MnO 2 , Ni(AC) 2 4H 2 O and LiAC were accurately weighed according to the stoichiometric ratio of 0.06:2.88:1:2.23 (5% excess lithium source to compensate for loss at high temperature), and the specific masses were 1.22g, 50.11g, 49.77g, and 29.43g, respectively. The weighed MnO 2 and Ni(AC) 2 4H 2 O, Al 2 o 3 Mix and place in a ball mill jar for ball milling, the ball milling speed is 400r / min, the ball milling time is 3h, the manganese dioxide, Ni(AC) 2 4H 2 O and Al 2 o 3The mixture was dried into a powder in a blast drying oven. The amount of weighing material is the oxalic acid powder of 3w+2 (y+z) again, and concrete quality is 203.42g, and the manganese dioxide, Ni(AC) that oxalic acid powder is dried into powder 2 4H 2 O and Al 2 o 3 The mixture is mixed by ball milling, the ball milling speed is 400r / min, and the ball milling time is 3h. Add PEG400 with...

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
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of an Al<3+>-doped regular-octahedron-shaped lithium nickel manganese oxide material. The method is characterized by, accurately weighing an aluminium source, a manganese source, a nickel source and a lithium source according to stoichiometric ratio; mixing the weighed manganese source, the nickel source and Al2O3 and carrying out ball milling; drying the mixture obtained after ball milling into powders; weighing oxalic acid powders and mixing the oxalic acid powders with the mixture dried into powders; adding PEG into the obtained mixture, carryingout stirring to obtain grey-black colloidal mixture, and preheating the grey-black colloidal mixture to obtain black precursor powders; mixing and ball milling the obtained black precursor powders and the weighed lithium source; and keeping the obtained mixture for 5-24 h under the temperature of 800 DEG C, and then, reducing the temperature to less than 600 DEG C and keeping the mixture for 5-24h and then, carrying out annealing to reach room temperature to obtain a submicron-level Al<3+>-doped regular-octahedron-shaped lithium nickel manganese oxide material. The method obtains the Al<3+>-doped regular-octahedron-shaped lithium nickel manganese oxide material by combining a low-cost high-temperature solid phase method and a polymer auxiliary method; and the material is high in cost performance.

Description

technical field [0001] The present invention relates to a kind of preparation method of material, specifically a kind of doping Al 3+ A preparation method of lithium nickel manganese oxide material with regular octahedral morphology. Background technique [0002] At present, the new type of clean energy has attracted wide attention, and lithium-ion batteries have gradually attracted great attention due to their advantages such as high specific capacity, high energy density, good charge-discharge cycle performance, small size and light weight. As a relatively important part of the four major elements of lithium-ion batteries, the cathode material accounts for 40% of the market and is also the top priority of research. Among them, lithium nickel manganese oxide (LNMO) material has become a research hotspot in positive electrode materials due to its advantages such as high potential, large discharge window, and low cost. Although the specific capacity of LNMO is theoretically...

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): H01M4/36H01M4/505H01M4/525H01M4/62H01M10/0525
CPCH01M4/362H01M4/505H01M4/525H01M4/628H01M10/0525H01M2004/021H01M2004/028Y02E60/10
Inventor 谭毅孙健铭王凯薛冰李鹏廷
Owner DALIAN UNIV OF TECH
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