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

Method for synthesizing Li4Mn5O12 sub-micrometer rod

A technology of submicron rods and mixed liquids, applied in electrical components, battery electrodes, circuits, etc., can solve the problems of less one-dimensional lithium manganate materials and complicated preparation methods, and achieve good electrochemical cycle performance and good repeatability , the effect of high yield

Inactive Publication Date: 2010-06-30
BEIHANG UNIV
View PDF0 Cites 52 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the low cost and environmental friendliness of lithium manganate cathode materials compared with other cathode materials, the research on lithium manganate series cathode materials is also quite extensive, but there are few reports on one-dimensional lithium manganate materials. The reported preparation method is also relatively complex

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
  • Method for synthesizing Li4Mn5O12 sub-micrometer rod
  • Method for synthesizing Li4Mn5O12 sub-micrometer rod
  • Method for synthesizing Li4Mn5O12 sub-micrometer rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (A) First, CTAB (cetyltrimethylammonium bromide) is added to deionized water, and after stirring for 10 minutes at a stirring speed of 600r / min, the first mixed solution is formed;

[0039] (B) Add MnSO to the first mixed solution 4 ·H 2 0, after stirring 5min under stirring speed 600r / min condition, form the second mixed liquor;

[0040] (C) Add KMnO to the second mixture 4 , after stirring for 5 minutes at a stirring speed of 600r / min, a brown suspension was formed;

[0041] Dosage: Add 0.8g of CTAB and 0.21g of MnSO to 100ml of deionized water 4 ·H 2 O and 1.48 g of KMnO 4 ;

[0042] (D) After incubating the brown suspension for 25 hours at a temperature of 160° C., the temperature was lowered to 25° C., and taken out to obtain a reactant having a supernatant and a lower precipitate;

[0043] (E) remove the supernatant, add alcohol to the sediment in the lower layer, stir for 10 minutes under the condition of stirring speed 600r / min, leave it for 5 minutes, an...

Embodiment 2

[0056] (A) First, CTAB (cetyltrimethylammonium bromide) was added to deionized water, and after stirring for 10 minutes at a stirring speed of 450r / min, the first mixed solution was formed;

[0057] (B) Add MnSO to the first mixed solution 4 ·H 2 0, after stirring for 5min under stirring speed 450r / min condition, form the second mixed solution;

[0058] (C) Add KMnO to the second mixture 4 , after stirring for 2 minutes at a stirring speed of 450r / min, a brown suspension was formed;

[0059] Dosage: Add 0.32g of CTAB and 0.39g of MnSO to 100ml of deionized water 4 ·H 2 O and 4.44 g of KMnO 4 ;

[0060] (D) After incubating the brown suspension for 30 hours at a temperature of 140° C., the temperature was lowered to 35° C., and taken out to obtain a reactant having a supernatant and a lower precipitate;

[0061] (E) removing the supernatant, adding alcohol to the sediment in the lower layer, stirring for 7 minutes at a stirring speed of 700 r / min, leaving it to stand for...

Embodiment 3

[0071] (A) CTAB (cetyltrimethylammonium bromide) was first added to deionized water, and after stirring for 5 minutes at a stirring speed of 700r / min, the first mixed solution was formed;

[0072] (B) Add MnSO to the first mixed solution 4 ·H 2 0, after stirring for 10min under stirring speed 700r / min condition, form the second mixed solution;

[0073] (C) Add KMnO to the second mixture 4 , after stirring for 2 minutes at a stirring speed of 700r / min, a brown suspension was formed;

[0074] Dosage: Add 0.94g of CTAB and 0.13g of MnSO to 100ml of deionized water 4 ·H 2 O and 1.48 g of KMnO 4 ;

[0075] (D) After incubating the brown suspension for 12 hours at a temperature of 180° C., the temperature was lowered to 25° C., and taken out to obtain a reactant having a supernatant and a lower precipitate;

[0076] (E) remove the supernatant, add alcohol to the sediment in the lower layer, stir for 5 minutes at a stirring speed of 450 r / min, leave it for 2 minutes, and remov...

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 sizeaaaaaaaaaa
Lengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for synthesizing a Li4Mn5O12 sub-micrometer rod, belonging to the technical field of synthesis of active material of a lithium ion battery. The method includes the following steps: firstly, synthesizing a MnOOH sub-micrometer rod through hydrothemal method and secondly preparing Li4Mn5O12 through solid phase technique, wherein the MnOOH sub-micrometer rod is synthesized by taking MnSO4.H2O, KMnO4 and CTAB as raw materials through the steps of keeping the materials warm for 12h-30h under 140 DEG C to 180 DEG C, washing through alcohol and deionized water, and drying; and the Li4Mn5O12 is prepared by taking MnOOH and LiOH.H2O as raw materials through the step of keeping the materials warm for 10h-24h under 500 DEG C-900 DEG C. The method has the advantages of easy implementation, good repeatability and low material cost, and the product of Li4Mn5O12 is of one-dimensional structure which facilitates the transfer of the Li + / charges in the one-dimensional direction when the Li4Mn5O12 sub-micrometer rod is applied on the lithium ion battery and is good for improving the performance of the lithium ion battery.

Description

technical field [0001] The invention relates to a self-template method for preparing lithium-ion battery cathode material Li 4 mn 5 o 12 Submicron Rod Approach. Background technique [0002] At present, among the many researches on cathode materials for lithium-ion batteries, one of the trends is to synthesize one-dimensional cathode materials in order to improve Li + And the conduction speed of electrons in one-dimensional direction, thereby improving the rate performance of lithium-ion batteries. At the same time, due to the low cost and environmental friendliness of lithium manganate cathode materials compared with other cathode materials, the research on lithium manganate series cathode materials is also quite extensive, but there are few reports on one-dimensional lithium manganate materials. The reported preparation method is also relatively complicated. Contents of the invention [0003] The object of the invention is to propose a kind of self-template method t...

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): H01M4/505H01M4/1391C01G45/12
CPCY02E60/12Y02E60/122Y02E60/10
Inventor 张世超王欣欣
Owner BEIHANG UNIV
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