Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of titanium dioxide micrometer ball

A technology of titanium dioxide and microspheres, applied to electrical components, battery electrodes, circuits, etc., can solve problems such as complex process conditions, large-capacity attenuation, and voltage hysteresis, and achieve simple process control, low cost, and easy large-scale synthesis Effect

Inactive Publication Date: 2012-07-04
GUILIN UNIVERSITY OF TECHNOLOGY
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a commercially available carbon-based anode material for lithium-ion batteries, there are defects such as complex process conditions, high cost, voltage hysteresis, and large capacity fading.

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 of titanium dioxide micrometer ball
  • Preparation method of titanium dioxide micrometer ball
  • Preparation method of titanium dioxide micrometer ball

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Add 1 ml of analytically pure butyl titanate to 60 ml of analytically pure tert-butanol, stir evenly at room temperature, then add 3 lauric acid, heat to 60°C with magnetic stirring, keep warm for 2 hours, and naturally cool to room temperature A clear and transparent solution is obtained;

[0022] (2) The mixed solution obtained above is transferred to 100 milliliters of stainless steel reactors with polytetrafluoroethylene lining;

[0023] (3) Put the reaction kettle of step (2) into a constant temperature drying oven and keep it warm at 150° C. for 10-15 hours, and naturally cool to room temperature;

[0024] (4) The white precipitate obtained in step (3) was repeatedly washed twice with deionized water or absolute ethanol, and then dried in a drying oven at 80° C. for 10 hours to obtain titanium dioxide microspheres.

[0025] (5) Titanium dioxide microspheres are used in the assembly process of lithium-ion batteries: the titanium dioxide microspheres obtained i...

Embodiment 2

[0027] (1) Add 2 ml of analytically pure butyl titanate to 60 ml of analytically pure tert-butanol, stir evenly at room temperature, then add 5 grams of lauric acid, heat to 70°C with magnetic stirring, keep warm for 2 hours, and cool naturally to A clear and transparent solution was obtained at room temperature;

[0028] (2) The mixed solution obtained above is transferred to 100 milliliters of stainless steel reactors with polytetrafluoroethylene lining;

[0029] (3) Put the reaction kettle of step (2) into a constant temperature drying oven and keep it warm at 200° C. for 15 hours, and naturally cool to room temperature;

[0030] (4) The white precipitate obtained in step (3) was repeatedly washed three times with deionized water or absolute ethanol, and then dried in a drying oven at 110° C. for 18 hours to obtain titanium dioxide microspheres.

[0031] (5) The assembly process for the lithium ion battery is the same as the step (5) of the first embodiment.

[0032] By X...

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
Diameteraaaaaaaaaa
Discharge specific capacityaaaaaaaaaa
Discharge specific capacityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a titanium dioxide micrometer ball. 1-2 milliliter analytically pure metatitanic acid butyl ester is added in and evenly mixed with 60 milliliter analytically pure tertiary butanol under room temperature, then 3-5 gram lauric acid is added in, mixed by magnetic force, heated to 60-70 DEG C, and naturally cooled to the room temperature to obtain clear and transparent solution. Obtained solution is transferred to a 100 milliliter stainless steel agitated reactor with a polytef lining, and the agitated reactor is placed in a constant temperature drying oven for keeping warm for 10-15 hours at the temperature of 150-200 DEG C and naturally cooled to the room temperature to obtain white sediment. The obtained white sediment is repeatedly washed for 2-3 times by using deionized water or absolute ethyl alcohol, and then dried for 10-18 hours at the temperature of 80-110 DEG C in the drying oven. The preparation method is low in cost, simple in process control process and easy to compound in large scale, and the diameter of manufactured titanium dioxide micrometer balls is 2-5 micrometers. The titanium dioxide micrometer ball prepared by using the method serves as negative electrode materials of a lithium ion battery, and has excellent circulation performance and charging and discharging specific capacity.

Description

technical field [0001] The invention belongs to the application field of nanometer materials and lithium batteries, and in particular relates to a preparation method of titanium dioxide microspheres used in lithium batteries, and the material can be used as negative electrode materials of lithium ion batteries. Background technique [0002] As a rechargeable power source for portable electronic products, lithium-ion batteries have higher volumetric energy density and better charge-discharge cycle performance than other secondary batteries (such as lead-acid batteries, nickel-cadmium batteries, and nickel-metal hydride batteries). Coupled with its unique advantages of no memory effect, low self-discharge rate and environmental friendliness, it has been widely concerned by industry and academia. [0003] With the development of high-power electronic mobile devices and hybrid electric vehicles, higher requirements are put forward for the energy density, cycle performance and sa...

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): H01M4/48
CPCY02E60/12Y02E60/10
Inventor 王海盛俊王林江
Owner GUILIN UNIVERSITY OF TECHNOLOGY