Method for making single ion nanoconductor

Patent metadata

Field	Value
Publication number	US-2017166677-A1
Application number	US-201715442538-A
Country	US
Kind code	A1
Filing date	Feb 24, 2017
Priority date	Aug 28, 2014
Publication date	Jun 15, 2017
Grant date	—

Abstract

A method for making a single ion nanoconductor is disclosed. In the method, a solution of nano sol is formed through a hydrolysis reaction. A silane coupling agent is added in the solution of nano sol, and heated in a protective gas to have a reaction thereby obtaining a solution of C═C group grafted nano sol. A methyl methacrylate monomer, an acrylic acid monomer, and an initiator are added to the solution of C═C group grafted nano sol, and heated to have a reaction thereby forming a nano sol-P(AA -MMA) composite. The nano sol-P(AA-MMA) composite is heated at an elevated pressure in a liquid phase medium to obtain a dehydroxy crystalline oxide nanoparticle-P(AA-MMA) composite. The dehydroxy crystalline oxide nanoparticle-P(AA-MMA) composite and lithium hydroxide are mixed and heated in an organic solvent to obtain the liquid dispersion of single ion nanoconductors.

First claim

What is claimed is:

1 . A method for making a single ion nanoconductor, the method comprises:
forming a solution of nano sol through a hydrolysis reaction; adding a silane coupling agent containing a C═C group in the solution of nano sol, and heating in a protective gas to have a reaction thereby obtaining a solution of C═C group grafted nano sol; adding a methyl methacrylate monomer, an acrylic acid monomer, and an initiator to the solution of C═C group grafted nano sol, and heating to have a reaction thereby forming a nano sol-P(AA -MMA) composite; heating the nano sol-P(AA-MMA) composite at an elevated pressure in a liquid phase medium to obtain a dehydroxy crystalline oxide nanoparticle-P(AA-MMA) composite; and mixing and heating the dehydroxy crystalline oxide nanoparticle-P(AA-MMA) composite and lithium hydroxide in an organic solvent to obtain the liquid dispersion of single ion nanoconductors.

2 . The method of claim 1 , wherein the nano sol is selected from the group consisting of titanium sol, aluminum sol, silicon sol, zirconium sol, and combinations thereof.

3 . The method of claim 1 , wherein the oxide nanoparticle is selected from the group consisting of titanium oxide, aluminum oxide, silicon oxide, zirconium oxide, and combinations thereof.

4 . The method of claim 1 , wherein the forming the solution of nano sol comprises:
dissolving at least one of a titanium compound, an aluminum compound, a silicon compound, and a zirconium compound capable of having a hydrolysis reaction in an organic solvent to form a first solution; forming a second solution by mixing water and another organic solvent; mixing the first solution with the second solution to form a mixture; and heating the mixture to form the solution of nano sol.

5 . The method of claim 4 further comprising adjusting a pH value of the second solution or the mixture to 3 to 4 or 9 to 10 by adding an acid or alkali.

6 . The method of claim 4 , wherein the at least one of the titanium compound, the aluminum compound, the silicon compound, and the zirconium compound is selected from the group consisting of organic ester compounds, organic alcohol compounds, oxysalts, halides, and combinations thereof.

7 . The method of claim 4 , wherein the at least one of the titanium compound, the aluminum compound, the silicon compound, and the zirconium compound is selected from the group consisting of tetraethyl orthosilicate, tetramethyl orthosilicate, triethoxysilane, trimethoxysilane, trimethoxy(methyl)silane, methyltriethoxysilane, aluminium isopropoxide, aluminium tri-sec-butoxide, titanium sulfate, titanium tetrachloride, tetrabutyl titanate, titanium(IV) ethoxide, titanium tetraisopropanolate, titanium(IV) tert-butoxide, diethyl titanate, zirconium(IV) butoxide, zirconium tetrachloride, zirconium(IV) tert-butoxide, zirconium n-propoxide, and combinations thereof.

8 . The method of claim 4 , wherein a molar ratio of the water in the second solution to titanium, aluminum, silicon, and zirconium in the first solution is about 3:1 to about 4:1.

9 . The method of claim 4 , wherein the mixture is heated at about 55° C. to about 75° C.

10 . The method of claim 1 , wherein the silane coupling agent is selected from the group consisting of diethylmethylvinylsilane, vinyltris(tert-butylperoxy)silane, ethoxydimethylvinylsilane, vinyltri-t-butoxysilane, vinyltriisopropenoxysilane, diethoxy(methyl)vinylsilane, triethoxyvinylsilane, vinyltrimethoxysilane, dimethoxymethylvinylsilane, diethoxymethylvinylsilane, vinyltriacetoxysilane, tri(isopropoxy)vinylsilane, trimethoxy(7-octen-1-yl) silane, vinylmethyldimethoxysilane, and combinations thereof.

11 . The method of claim 1 , wherein a molar ratio of the nano sol to the silane coupling agent is about 1:100 to about 1:20.

12 . The method of claim 1 , wherein a size of the single ion nanoconductors is less than 10 nanometers.

13 . The method of claim 1 , wherein the nano sol-P(AA-MMA) composite is heated at a pressure in a range from about 1 MPa to about 2 MPa at a temperature of about 145° C. to about 200° C.

14 . The method of claim 1 , wherein the dehydroxy crystalline oxide nanoparticle-P(AA-MMA) composite and lithium hydroxide are heated at about 60° C. to about 90° C.

15 . The method of claim 1 , wherein the liquid dispersion of single ion nanoconductors is transparent and clear.

Assignees

• Jiangsu Huadong Inst Of Li-Ion Battery Co Ltd
• Univ Tsinghua

Inventors

• Cao Jiang
• He xiang-ming
• Shang yu-ming
• Wang Li
• Li Jian-Jun
• Zhang hong-sheng
• Wang yao-wu
• Gao Jian
• Luo Jing

Classifications

• H01M50/429

  Natural polymers · CPC title

• H01M50/426

  Fluorocarbon polymers · CPC title

• H01M50/417

  Polyolefins · CPC title

• C08L51/10

  grafted on to inorganic materials · CPC title

• C08L2201/56

  Non-aqueous solutions or dispersions · CPC title