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

Preparation of LiMnO2 nano-sheet and application thereof in lithium battery

A nanosheet and lithium battery technology, applied in the field of nanomaterials, can solve the problems of no nanosheet patent report, complex preparation method, harsh conditions, etc., and achieve the effects of significant economic value, simple preparation method and low cost.

Inactive Publication Date: 2009-10-14
FUZHOU UNIV
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the rise of nanomaterials, LiMnO 2 It is considered to be a promising cathode material. According to literature reports, their theoretical capacity is 285mAh / g, but the current nanoscale LiMnO 2 The preparation method is complicated and the conditions are harsh. In addition, there is no LiMnO 2 Related patent reports of nanosheets

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 of LiMnO2 nano-sheet and application thereof in lithium battery
  • Preparation of LiMnO2 nano-sheet and application thereof in lithium battery
  • Preparation of LiMnO2 nano-sheet and application thereof in lithium battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] Mix lithium hydroxide and manganese trioxide according to a mol ratio of 5-15:1, add deionized water so that the concentration of lithium hydroxide in the solution is 2mol / L, stir it fully with a magnetic stirrer and transfer it to poly LiMnO can be prepared by hydrothermally reacting at 200°C for three hours in a stainless steel reaction kettle with vinyl fluoride substrate, washing and filtering with water for 2 to 3 times, and vacuum drying at 70°C for 10 hours. 2 Nanosheets.

[0014] From figure 1 and figure 2 It can be clearly seen that the LiMnO of the present invention 2 Nanosheets are stacked by many thin sheets with a thickness of about several nanometers, and the thickness of the nanosheets is about 40nm.

[0015] LiMnO 2 Application of Nanosheets in Lithium Batteries: Assembly of the Lithium Batteries: By Mass Ratio LiMnO 2 Nanosheets: acetylene black: polyvinylidene fluoride (PVDF) = 75:15:10 mixed and ground and evenly coated on a circular aluminum s...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention aims at providing a method for preparing a LiMnO2 nano-sheet and the application thereof in a lithium battery. The LiMnO2 nano-sheet is formed by stacking a plurality of layers of thin sheets with the thickness being a few nanometers, and the thickness of the nano-sheet is about 40nm. The preparing method comprises the following steps of: mixing manganese sesquioxide and lithium hydroxide, then adding a suitable amount of de-ionized water to ensure the concentration of the lithium hydroxide to be 2mol / L, then fully stirring the mixture by a magnetic stirrer and transferring to a stainless steel reaction kettle with a polyfluortetraethylene substrate, hydro-thermal reacting for 3 hours at the temperature of 200 DEG C, washing and filtrating for 2 to 3 times, and vacuum drying for 10 hours at the temperature of 70 DEG C to prepare the LiMnO2 nano-sheet. The method has the advantages of simple operation, low cost, high purity and excellent performance, and the LiMnO2 nano-sheet can be synthesized in large quantity and used as the anode of the lithium battery, which can improve the specific capacity of the lithium battery obviously and has great economic value.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, in particular to LiMnO 2 Preparation of nanosheets and their application in lithium batteries. Background technique [0002] At present, the application prospects of lithium batteries are becoming more and more broad, and the positive electrode materials commonly used in industry (such as LiCoO 2 , LiNiO 2 ) capacity is not high, only about 120mAh / g. With the rise of nanomaterials, LiMnO 2 It is considered to be a promising cathode material. According to literature reports, their theoretical capacity is 285mAh / g, but the current nanoscale LiMnO 2 The preparation method is complicated and the conditions are harsh. In addition, there is no LiMnO 2 Related patent reports of nanosheets. Contents of the invention [0003] The invention provides a LiMnO 2 The preparation of nanosheets and its application in lithium batteries, the synthesized LiMnO 2 Nanosheets are stacked with many laye...

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 Applications(China)
IPC IPC(8): C01G45/12B82B3/00H01M4/04H01M4/48H01M4/50H01M10/38H01M10/40H01M10/44G01R31/36
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 魏明灯何轶魏可镁
Owner FUZHOU 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