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Processing method for carrying out surface metal nanoparticles coating modification on lithium ion battery material

A lithium-ion battery, surface metal technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of long reaction time and complicated process, and achieve the effect of short synthesis process, simple process and convenient operation

Inactive Publication Date: 2012-05-02
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods all have the defects of complex process and long reaction time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] LiFePO 4 The dispersion of microspheres was spin-coated on the copper sheet with a coating density of 0.012 g / cm 2 ;

[0023] Prepare a mixed solution with a concentration of chloroplatinic acid of 0.0056 mol / L and a concentration of cobalt chloride of 0.0025 mol / L, place the spin-coated copper sheet in the solution and soak for 5 minutes;

[0024] Take out the copper sheet, disperse the powder on the copper sheet in deionized water by ultrasonic method, wash several times, and then spray dry to obtain LiFePO 4 Composites of Microspheres and Platinum Nanoparticles. The product does not contain other impurities and has very high purity. Platinum nanoparticles and platinum nanocubes are evenly distributed, with high loading rate and no agglomeration.

Embodiment 2

[0026] LiCoO 2 The dispersion liquid was spin-coated on the copper sheet with a coating density of 0.04 g / cm 2 ;

[0027] Prepare a mixed solution with a silver nitrate concentration of 0.0035 mol / L and a copper nitrate concentration of 0.0075 mol / L, and place the spin-coated copper sheet in the solution for 1 minute;

[0028] Take out the copper sheet, disperse the powder on the copper sheet in deionized water by ultrasonic method, wash several times, and then spray dry to obtain LiCoO 2 Composite with silver nanoparticles.

Embodiment 3

[0030] Will LiNi 1 / 3 mn 1 / 3 co 1 / 3 o 2 The dispersion liquid was spin-coated on the zinc sheet with a coating density of 0.004 g / cm 2 ;

[0031] Prepare the concentration of chloroauric acid as 0.007 mol / L, without adding divalent copper salt or cobalt salt, place the spin-coated zinc sheet in the solution and soak for 30 minutes;

[0032] Take out the zinc sheet, disperse the powder on the zinc sheet in deionized water by ultrasonic method, wash several times, and then spray dry to obtain LiNi 1 / 3 mn 1 / 3 co 1 / 3 o 2 Composite with gold nanoparticles.

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PUM

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Abstract

The invention discloses a processing method for carrying out surface metal nanoparticles coating modification on a lithium ion battery material. At normal temperature, lithium ion battery material and metal salt solution are used as raw materials, a copper sheet or a zinc sheet are used as a base, and metal nanoparticles are evenly coated at the surface of the lithium ion battery material, so that performance of the material is effectively modified; the method comprises the steps of: spinning the dispersion of the lithium ion battery material which is compounded in advance on the copper sheet or the zinc sheet; soaking the copper sheet or the zinc sheet in a prepared metal salt solution or in a mixed solution of the metal salt solution and bivalent copper salt or cobalt salt for a certain time; taking out the copper sheet or the zinc sheet, washing the copper sheet or the zinc sheet by deionized water; and drying the sheet to obtain the lithium ion battery material coated with metal particles. The method is simple and controllable, has short procedure, is easy to operate and has strong reproducibility, and can be used widely.

Description

technical field [0001] The invention relates to a treatment method for coating and modifying surface metal nanoparticles of lithium-ion battery materials, which belongs to the field of energy materials and technologies. technical background [0002] Lithium-ion battery is a new generation of green secondary battery after Ni-MH battery since the 1990s. Due to the advantages of high operating voltage, high energy density, long cycle life, small self-discharge, and no memory effect, lithium-ion batteries have gradually become the preferred chemical power source for high-end consumer electronics, and have penetrated into cutting-edge technical fields such as aerospace and military. . As an ideal energy source in the new century, lithium-ion batteries have attracted worldwide attention, and as a key material for the development of lithium-ion batteries, lithium-ion battery materials are even more important. [0003] The modification methods for lithium-ion battery materials mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/1397H01M4/1391
CPCY02E60/122Y02E60/10
Inventor 刘大军王倩
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY
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