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Preparation method of nanometer single ion conductor

A single-ion and conductor technology, applied in the field of preparation of nano-single-ion conductors, can solve the problems of difficulty in dispersion, easy agglomeration, and unsatisfactory product performance, and achieve the effect of convenient enhancement and modification.

Active Publication Date: 2017-01-25
JIANGSU HUADONG INST OF LI ION BATTERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nanomaterials have a large specific surface area, which is difficult to disperse and easily agglomerate, and it is difficult to form a uniform composite with the separator, which often leads to unsatisfactory product performance.

Method used

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  • Preparation method of nanometer single ion conductor
  • Preparation method of nanometer single ion conductor
  • Preparation method of nanometer single ion conductor

Examples

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preparation example Construction

[0013] see figure 1 and figure 2 , an embodiment of the present invention provides a method for preparing a nanometer single ion conductor, which includes the following steps:

[0014] S1, preparing a solution of nano sol by hydrolysis reaction, the nano sol is selected from at least one of titanium sol, aluminum sol, silica sol and zirconium sol, specifically comprising the following steps:

[0015] S11, dissolving at least one of the compounds of titanium, aluminum, silicon and zirconium that can undergo hydrolysis reactions in an organic solvent to form a first solution;

[0016] S12, mixing water and an organic solvent to form a second solution; and

[0017] S13, mixing and heating the first solution and the second solution to form the nano-sol solution, and the step S12 or S13 further includes adjusting the pH value to 3-4 or 9-10 by adding acid or base;

[0018] S2, adding a silane coupling agent containing a C=C group to the solution of the nano-sol, heating in a pr...

Embodiment 1

[0041] Mix 10 mL of tetrabutyl titanate with 50 mL of ethanol to form a first solution. Deionized water was mixed with 50 mL of ethanol to form a second solution. The molar ratio of deionized water to tetrabutyl titanate is 4:1. Slowly drop the second solution into the first solution for mixing, add concentrated nitric acid to adjust the pH to 3-4, stir and heat at 65°C for half an hour to obtain a titanium sol solution. Vinyltriethoxysilane was added to the titanium sol solution, and the temperature was raised to 80° C. for 1 hour under nitrogen protection to obtain a titanium sol solution grafted with C=C groups, adding MMA monomer and AA monomer, and Add the initiator benzoyl peroxide, and react at 80°C for 12 hours to obtain a solution of titanium dioxide nanosol-P(AA-MMA) complex. The solution of this titanium dioxide nano sol-P(AA-MMA) complex is placed in an autoclave, and heat-treated at 145° C. for 24 hours to obtain a complete dehydroxylation crystalline nano-TiO ...

Embodiment 2

[0043] The difference from Example 1 is only that tetrabutyl titanate is replaced by aluminum isopropoxide.

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Abstract

The invention relates to a preparation method of a nanometer single ion conductor, comprising preparing a solution of a nanosol through a hydrolysis reaction, the nanosol being selected from at least one of titanium sol, aluminum sol, silica sol and zirconium sol; adding C=C The silane coupling agent of the group is heated in a protective gas to react to obtain the solution of the nano-sol grafted by the C=C group; add methacrylic acid to the solution of the nano-sol grafted by the C=C group Methyl ester monomer, acrylic acid monomer and initiator are heated to react to obtain nano-sol-P (AA-MMA) complex; heated and pressurized in the liquid phase medium of the autoclave to react, the heating temperature is 145 ° C ~200°C, the pressure is 1MPa~2MPa, to obtain a completely dehydroxylated crystalline oxide nanoparticle-P (AA-MMA) composite, the oxide nanoparticle is at least one of the oxides of titanium, aluminum, silicon and zirconium One; and adding the oxide nanoparticle-P(AA-MMA) and lithium hydroxide into an organic solvent to mix and heat to obtain a transparent and clear dispersion of the nano single-ion conductor.

Description

technical field [0001] The invention relates to a preparation method of a nanometer single ion conductor, in particular to a preparation method of a low energy consumption and highly dispersed nanometer single ion conductor. Background technique [0002] With the rapid development of lithium-ion batteries in new energy applications such as mobile phones, electric vehicles and energy storage systems, the safety of lithium-ion batteries is particularly important. Based on the analysis of the reasons for the safety of lithium-ion batteries, the safety of lithium-ion batteries can be improved from the following aspects: First, by optimizing the design and management of lithium-ion batteries, real-time monitoring and processing of the charging and discharging process of lithium-ion batteries , to ensure the safety of lithium-ion batteries, the second is to improve or develop new electrode materials to improve the intrinsic safety performance of the battery, and the third is to us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/11C08L51/10C08F292/00C08F220/06C08F220/14C08F8/44H01M2/16H01M50/409H01M50/417H01M50/426H01M50/429
CPCH01M10/052H01M10/0562H01M10/4235H01M2300/0091H01M2300/0094C08F292/00B01J39/20Y02E60/10H01M50/446H01M50/426H01M50/429H01M50/417C08F230/085H01M50/44C08J3/11C08L51/10C08J2351/10C08L2201/56C08L2203/20H01M10/0565H01M2300/0085
Inventor 曹江何向明尚玉明王莉李建军张宏生王要武高剑罗晶
Owner JIANGSU HUADONG INST OF LI ION BATTERY
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