Preparation method for lithium ion battery anode active material Li2ZnTi3O8

A negative electrode active material and lithium-ion battery technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of high cost and complicated preparation steps, and achieve the effect of reducing agglomeration and uniform distribution

Inactive Publication Date: 2015-10-28
TIANJIN UNIV
View PDF1 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of Li with higher specific capacity, good high rate performance and cycle stability 2 ZnTi 3 o 8 Lithium-ion battery anode

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 method for lithium ion battery anode active material Li2ZnTi3O8
  • Preparation method for lithium ion battery anode active material Li2ZnTi3O8
  • Preparation method for lithium ion battery anode active material Li2ZnTi3O8

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1:

[0029] Weigh 1.8568g analytically pure zinc acetate, dissolve it in 50mL of organic solvent absolute ethanol, stir to fully dissolve it to form a transparent liquid, called solution A; then add 5.3586g analytically pure citric acid solid to solution A to form White flocculent precipitate, magnetically stirred for 0.5-1h, the molar ratio of citric acid to the total cations in the solution is controlled at: citric acid / total cations = 1.0-1.5, this liquid mixture is called B; then add to B Add 0.6281g analytically pure lithium carbonate, stir for 0.5-1h, then add 8.6792g analytically pure tetrabutyl titanate liquid dropwise, magnetically stir for 1-2h to obtain a light yellow transparent liquid mixture, called solution C, continue to stir 0.5-1h; then transfer solution C to 80℃ constant temperature oil bath and magnetically stir to form wet gel, bake it in 80℃ blast drying oven for 24h to fully dry it, then grind it in an agate mortar Turn it into a pale yellow...

Example Embodiment

[0031] Example 2:

[0032] Weigh 1.8568g analytically pure zinc acetate, dissolve it in 50mL of organic solvent absolute ethanol, stir to fully dissolve it to form a transparent liquid, called solution A; then add 5.3586g analytically pure citric acid solid to solution A to form White flocculent precipitate, magnetically stirred for 0.5-1h, the molar ratio of citric acid to the total cations in the solution is controlled at: citric acid / total cations = 1.0-1.5, this liquid mixture is called B; then add to B Add 0.6281g analytically pure lithium carbonate, stir for 0.5-1h, then add 8.6792g analytically pure tetrabutyl titanate liquid dropwise, magnetically stir for 1-2h to obtain a light yellow transparent liquid mixture, called solution C, continue to stir 0.5-1h; then transfer solution C to 80℃ constant temperature oil bath and magnetically stir to form wet gel, bake it in 80℃ blast drying oven for 24h to fully dry it, then grind it in an agate mortar Turn it into a light yello...

Example Embodiment

[0033] Example 3:

[0034] Weigh 1.8568g analytically pure zinc acetate, dissolve it in 50mL of organic solvent absolute ethanol, stir to fully dissolve it to form a transparent liquid, called solution A; then add 5.3586g analytically pure citric acid solid to solution A to form White flocculent precipitate, magnetically stirred for 0.5-1h, the molar ratio of citric acid to the total cations in the solution is controlled at: citric acid / total cations = 1.0-1.5, this liquid mixture is called B; then add to B Add 0.6281g analytically pure lithium carbonate, stir for 0.5-1h, then add 8.6792g analytically pure tetrabutyl titanate liquid dropwise, magnetically stir for 1-2h to obtain a light yellow transparent liquid mixture, called solution C, continue to stir 0.5-1h; then transfer solution C to 80℃ constant temperature oil bath and magnetically stir to form wet gel, bake it in 80℃ blast drying oven for 24h to fully dry it, then grind it in an agate mortar Turn it into a light yello...

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 preparation method for a lithium ion battery anode active material Li2ZnTi3O8, and aims at providing a Li2ZnTi3O8 lithium ion battery anode active material which has higher specific capacity and good high-rate performance and cycling stability. According to the technical scheme, tetrabutyl titanate, lithium carbonate, zinc acetate and complexing agents are mixed and stirred according to a certain order, in the gel forming process, mixing of the reactants at the molecular level is facilitated, so that the reactants can make full contact with precursors, and therefore the prepared material has the advantages that the particle size is in the nanometer range, dispersion is uniform, an obvious agglomeration phenomenon does not exist, and piling holes exist among particles. Accordingly, the structural features are beneficial for the development of the high-rate performance and long cycling performance of the active material.

Description

Technical field: [0001] The invention belongs to the field of lithium ion batteries, in particular to a lithium ion battery negative electrode active material Li 2 ZnTi 3 o 8 method of preparation. Background technique: [0002] With the development of electronic consumer products such as smart phones and tablet computers towards large screens, the requirements for the battery life of rechargeable batteries are getting higher and higher. Since Japan's Sony Corporation first commercialized lithium-ion batteries in 1990, lithium-ion batteries have been widely used in various portable electronic devices due to their high output voltage, high energy density, long service life, environmental friendliness, and no memory effect. In addition, lithium-ion batteries can also be used in many fields such as pure electric vehicles, hybrid vehicles, large-scale energy storage systems, and aerospace. For commercialized lithium-ion batteries, graphite-like carbon materials are mostly us...

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): H01M4/485H01M4/1391H01M10/0525
CPCH01M4/1391H01M4/485H01M10/0525Y02E60/10
Inventor 唐致远唐好庆罗加严
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap