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

Metal formate/carbon nano tube lithium ion battery cathode material and preparing method thereof

A lithium-ion battery, metal formate technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of low electronic and ionic conductivity, low discharge specific capacity, and increased material polarization, and achieve high Effects of specific capacity, sufficient compounding, and increased contact area

Inactive Publication Date: 2016-04-13
CHANGAN UNIV
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2007, the Tarascon research group introduced Fe, a MOFs material, for the first time. III (OH) 0.8 f 0.2 (BDC)·H 2 O(MIL-53(Fe)) is used as the positive electrode material of lithium-ion batteries, but the specific discharge capacity of the material is only 75mAh g -1
However, MOFs materials also have some problems when they are used as anode materials for lithium-ion batteries, the most prominent is the low electronic and ionic conductivity. Rapid decline in capacity, etc.

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
  • Metal formate/carbon nano tube lithium ion battery cathode material and preparing method thereof
  • Metal formate/carbon nano tube lithium ion battery cathode material and preparing method thereof
  • Metal formate/carbon nano tube lithium ion battery cathode material and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Take by weighing 5.678g nickel nitrate hexahydrate, 5ml purity be 88% formic acid (molar ratio 1: 6.7) at room temperature, add and fill 40mlN, in the beaker of N-dimethylformamide solvent, stir 30min, make The two are mixed evenly to obtain a mixed solution;

[0037] (2) Mix 0.0061g of acidified carbon nanotubes and 9ml of N, N-dimethylformamide in a beaker; stir at room temperature for 10 minutes, ultrasonically disperse for 30 minutes, repeat stirring and ultrasonically dispersing 3 times until the acidified carbon nanotubes are uniformly dispersed, and prepare into a suspension;

[0038] (3) Measure 1ml of the mixed solution in step (1) and mix it with the suspension in step (2), stir for 30 minutes to mix the two evenly, and transfer the mixed solution to a 25ml reaction kettle with a Teflon liner , stamped and sealed;

[0039] (4) After the reaction, the reaction kettle was placed in a programmed temperature-controlled oven, and kept at 100°C for 2 days;

...

Embodiment 2

[0042](1) Take by weighing 5.678g nickel nitrate hexahydrate, 5ml purity be 88% formic acid (molar ratio 1: 6.7) at room temperature, add and fill 40mlN, in the beaker of N-dimethylformamide solvent, stir 30min, make The two are mixed evenly to obtain a mixed solution;

[0043] (2) Mix 0.0091g ​​of acidified carbon nanotubes and 9ml of N, N-dimethylformamide in a beaker; stir at room temperature for 10 minutes, ultrasonically disperse for 30 minutes, repeat stirring and ultrasonically dispersing 3 times until the acidified carbon nanotubes are uniformly dispersed, and prepare into a suspension;

[0044] (3) Measure 1ml of the mixed solution in step (1) and mix it with the suspension in step (2), stir for 30 minutes to mix the two evenly, and transfer the mixed solution to a 25ml reaction kettle with a Teflon liner , stamped and sealed;

[0045] (4) After the reaction, the reaction kettle was placed in a programmed temperature-controlled oven, and kept at 100°C for 2 days;

...

Embodiment 3

[0048] (1) Take by weighing 5.678g nickel nitrate hexahydrate, 5ml purity be 88% formic acid (molar ratio 1: 6.7) at room temperature, add and fill 40mlN, in the beaker of N-dimethylformamide solvent, stir 30min, make The two are mixed evenly to obtain a mixed solution;

[0049] (2) Mix 0.0122g of acidified carbon nanotubes and 9ml of N, N-dimethylformamide in a beaker; stir at room temperature for 10 minutes, ultrasonically disperse for 30 minutes, repeat stirring and ultrasonically dispersing 3 times until the acidified carbon nanotubes are uniformly dispersed, and prepare into a suspension;

[0050] (3) Measure 1ml of the mixed solution in step (1) and mix it with the suspension in step (2), stir for 30 minutes to mix the two evenly, and transfer the mixed solution to a 25ml reaction kettle with a Teflon liner , stamped and sealed;

[0051] (4) After the reaction, the reaction kettle was placed in a programmed temperature-controlled oven, and kept at 100°C for 2 days;

...

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 belongs to the technical field of lithium ion battery electrode materials, and discloses a metal formate / carbon nano tube lithium ion battery cathode material and a preparing method thereof. The lithium ion battery cathode material is prepared from metal nitrate, formic acid, N,N-dimethylformamide and acidized carbon nano tubes, wherein the metal nitrate includes nickel nitrate, cobalt nitrate, zinc nitrate and manganous nitrate, the molar ratio of the metal nitrate to formic acid is 1:5-1:8, and the mass of the acidized carbon nano tubes accounts for 10-40% that of the metal nitrate. The preparing method adopts a solvothermal method, conductivity of the obtained metal formate / carbon nano tube lithium ion battery cathode material is remarkably improved by means of effective cladding of the carbon nano tubes, the material has high specific capacity and circulation stability, respective advantages of the carbon nano tubes and a metal-organic framework material can be brought into play, and the material is an ideal lithium ion battery cathode material. The preparing method is simple in preparation technology and convenient and easy to operate.

Description

technical field [0001] The invention relates to a lithium ion battery negative electrode active material, in particular to a metal formate / carbon nanotube lithium ion battery negative electrode material and a preparation method thereof. Background technique [0002] With the advancement of technology, lithium-ion batteries are gradually being widely used in electronic products, digital products and electric vehicles and other fields. As an important part of lithium-ion batteries, the performance of negative electrode materials directly affects the overall performance of lithium-ion batteries. At present, graphite is generally used as the anode material of commercialized lithium-ion batteries, but graphite has certain defects as the anode material, such as high selectivity to electrolyte and low theoretical specific capacity. Facing the requirements of high-energy energy storage systems on the market today, graphite can no longer meet the requirements, so new high-performanc...

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): H01M4/60H01M4/583H01M4/139H01M10/0525
CPCH01M4/139H01M4/362H01M4/366H01M4/583H01M4/60H01M10/0525Y02E60/10
Inventor 苟蕾刘鹏刚夏霁雯刘丹樊小勇李东林
Owner CHANGAN 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