Nano electrode material of energy storage lithium ion battery

A lithium-ion battery and nano-electrode technology, applied in battery electrodes, electrode manufacturing, secondary batteries, etc., can solve problems such as low conductivity and limited applications

Inactive Publication Date: 2020-10-20
广西华政新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low electrical conductivity of traditional lithium titanate materials limits its application in high-power lithium-ion batteries and hybrid supercapacitors

Method used

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  • Nano electrode material of energy storage lithium ion battery
  • Nano electrode material of energy storage lithium ion battery
  • Nano electrode material of energy storage lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0024] The nanometer electrode material for energy storage lithium ion battery is prepared by the following method:

[0025] Step 1) dissolving lithium carbonate in an aqueous solution of polyethylene glycol as a lithium source, stirring to form a solution, wherein the concentration of the lithium source is 0.5mol / L;

[0026] Step 2) Dissolving tetrabutyl titanate as a titanium source in an aqueous solution of polyethylene glycol and stirring to form a solution, wherein the concentration of the lithium source is 0.6 mol / L;

[0027] Step 3) adding carbon nanotubes to a mixed solution of acetic acid and nitric acid, in the mixed solution of acetic acid and nitric acid, the concentration of nitric acid is 60wt.%, adjust the pH to 4, so that the concentration of carbon nanotubes is 10mg / mL, ultrasonic treatment for 2h , forming a suspension;

[0028] Step 4) Mix the solutions obtained in steps 1) and 2) in equal volumes, and continuously add the suspension obtained in step 3) dur...

example 2

[0033] The nanometer electrode material for energy storage lithium ion battery is prepared by the following method:

[0034] Step 1) dissolving lithium carbonate in an aqueous solution of polyethylene glycol as a lithium source, stirring to form a solution, wherein the concentration of the lithium source is 0.5mol / L;

[0035] Step 2) Dissolving tetrabutyl titanate as a titanium source in an aqueous solution of polyethylene glycol and stirring to form a solution, wherein the concentration of the lithium source is 0.6 mol / L;

[0036] Step 3) adding carbon nanotubes to a mixed solution of acetic acid and nitric acid, in the mixed solution of acetic acid and nitric acid, the concentration of nitric acid is 70wt.%, adjust the pH to 4.5, so that the concentration of carbon nanotubes is 10mg / mL, ultrasonic treatment for 2h , forming a suspension;

[0037] Step 4) Mix the solutions obtained in steps 1) and 2) in equal volumes, and continuously add the suspension obtained in step 3) d...

example 3

[0042] The nanometer electrode material for energy storage lithium ion battery is prepared by the following method:

[0043] Step 1) dissolving lithium carbonate in an aqueous solution of polyethylene glycol as a lithium source, stirring to form a solution, wherein the concentration of the lithium source is 0.5mol / L;

[0044] Step 2) Dissolving tetrabutyl titanate as a titanium source in an aqueous solution of polyethylene glycol and stirring to form a solution, wherein the concentration of the lithium source is 0.6 mol / L;

[0045] Step 3) adding carbon nanotubes to a mixed solution of acetic acid and nitric acid, in the mixed solution of acetic acid and nitric acid, the concentration of nitric acid is 65wt.%, adjust the pH to 4.5, so that the concentration of carbon nanotubes is 10mg / mL, ultrasonic treatment for 2h , forming a suspension;

[0046] Step 4) Mix the solutions obtained in steps 1) and 2) in equal volumes, and continuously add the suspension obtained in step 3) d...

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Abstract

The invention discloses a nano electrode material of an energy storage lithium ion battery. The nano electrode material is prepared by the following method: 1) taking lithium carbonate as a lithium source; 2) taking tetrabutyl titanate as a titanium source; 3) adding carbon nanotubes into a mixed solution of acetic acid and nitric acid, and carrying out ultrasonic treatment to form a suspension; 4) mixing the solutions in an isopyknic manner, and continuously adding the suspension in the stirring process to form a viscous colloid; (5) standing for 12 hours in an environment with the relative humidity being lower than 40%, stirring, standing for 12 hours in an environment with the relative humidity being lower than 20%, and drying in a drying oven of 80-90 DEG C to form lumps; and 6) grinding the block into powder, sintering in a calcining furnace, cooling for solution treatment, sintering again, and cooling to room temperature to obtain the nano negative electrode material. The nano electrode material has the advantages of strong liquid absorption and retention capability, excellent cycle performance, improvement of the energy storage and utilization efficiency, and reduction of the environmental pollution.

Description

technical field [0001] The invention relates to the field of lithium ion batteries. More specifically, the present invention relates to a nanometer electrode material for energy storage lithium ion batteries. Background technique [0002] Lithium-ion batteries are widely used in various portable electronic devices and electric vehicles due to their advantages of fast charge and discharge, good low temperature performance, high specific energy, low self-discharge rate, small size, and light weight. However, with the improvement of people's living standards, higher requirements are placed on lithium-ion batteries, such as better energy storage. The low electrical conductivity of traditional lithium titanate materials limits its application in high-power lithium-ion batteries and hybrid supercapacitors. Contents of the invention [0003] It is an object of the present invention to solve at least the above-mentioned problems and to provide at least the advantages which will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04H01M10/058H01M10/0525H01M4/485
CPCH01M4/0402H01M4/485H01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 何敏华陆何萍
Owner 广西华政新能源科技有限公司
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