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Composite organic solid electrolyte of metal organic framework, and preparation method and application of composite organic solid electrolyte

A metal-organic framework and solid-state electrolyte technology, applied in the direction of composite electrolytes, solid electrolytes, non-aqueous electrolytes, etc., can solve the problem of low ionic conductivity, achieve the effect of improving ionic conductivity, easy to obtain raw materials, and simple raw materials

Active Publication Date: 2019-09-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of low ionic conductivity of the current organic solid electrolyte, and to provide a metal-organic framework composite organic solid electrolyte and its preparation method and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a method for preparing a metal-organic framework composite organic solid electrolyte, comprising the following steps:

[0030] (1) In an argon glove box, add 0.01g of benzoin dimethyl ether and 0.30g of lithium bistrifluoromethanesulfonimide to 1g of methoxypolyethylene glycol acrylate, and stir for 4 hours in the dark to obtain a transparent clear liquid;

[0031] (2) In the argon glove box, 0.05g ZIF-8 is added in the transparent clear liquid of step (1), stirs 5h, obtains mixed slurry; The ZIF-8 used in this step according to literature (Cravillon J. , MüNzer S., Lohmeier S.J., et al.Rapid room-temperature synthesis and characterization of nanocrystals of a prototypical Zeolitic Imidazolate Framework[J].Chemistry of Materials,2009,21(8):1410-1412.) obtained;

[0032] (3) In an argon glove box, coat the mixed slurry in step (2) on a stainless steel sheet, and irradiate for 1 hour under an 80W ultraviolet lamp to cause free radical polymerizat...

Embodiment 2

[0036] This embodiment provides a method for preparing a metal-organic framework composite organic solid electrolyte, comprising the following steps:

[0037] (1) In an argon glove box, add 0.012 g of benzoin dimethyl ether and 0.35 g of lithium hexafluorophosphate to 1 g of methoxypolyethylene glycol acrylate, and stir for 3.5 hours in the dark to obtain a transparent and clear liquid;

[0038] (2) In the argon glove box, 0.03g ZIF-8 is added in the transparent clear liquid of step (1), stirs 5h, obtains mixed slurry; The ZIF-8 used in this step according to literature (Cravillon J. , MüNzer S., Lohmeier S.J., et al.Rapid room-temperature synthesis and characterization of nanocrystals of a prototypical Zeolitic Imidazolate Framework[J].Chemistry of Materials,2009,21(8):1410-1412.) obtained;

[0039] (3) In an argon glove box, coat the mixed slurry in step (2) on a stainless steel sheet, and irradiate for 1 hour under an 80W ultraviolet lamp to cause free radical polymerizatio...

Embodiment 3

[0043] This embodiment provides a method for preparing a metal-organic framework composite organic solid electrolyte, comprising the following steps:

[0044] (1) In an argon glove box, add 0.02g of photoinitiator 1173 and 0.25g of lithium bistrifluoromethanesulfonimide to 1g of methoxypolyethylene glycol methacrylate, and stir for 4 hours in the dark, A transparent and clear liquid is obtained;

[0045] (2) In the argon glove box, 0.07g ZIF-8 is added in the transparent clear liquid of step (1), stirs 6h, obtains mixed slurry; The ZIF-8 used in this step according to literature (Cravillon J. , MüNzer S., Lohmeier S.J., et al.Rapid room-temperature synthesis and characterization of nanocrystals of a prototypical Zeolitic Imidazolate Framework[J].Chemistry of Materials,2009,21(8):1410-1412.) obtained;

[0046] (3) In an argon glove box, the mixed slurry in step (2) was coated on a stainless steel sheet, and irradiated under a 100W ultraviolet lamp for 1.4h to cause free radical ...

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Abstract

The invention discloses a composite organic solid electrolyte of a metal organic framework, and a preparation method and an application of the composite organic solid electrolyte. The preparation method comprises the steps of (1) adding a photoinitiator and a lithium salt into a monomer, and performing stirring to obtain a transparent and clear liquid; (2) adding the metal organic framework into the transparent and clear liquid in the step (1), and performing stirring and mixing to obtain mixed slurry; and (3) applying the mixed slurry in the step (2) to a pole piece, and performing illumination under an ultraviolet lamp to enable the monomer to generate a free radical polymerization reaction so as to obtain the composite organic solid electrolyte. The metal organic framework is compoundedwith a comb-shaped polymer, and the rapid ion transmission characteristic of a branched structure of the comb-shaped polymer is combined with nano-pore adsorption effect of the metal organic framework, so that the ionic conductivity of the solid electrolyte is improved. The ionic conductivity of a battery using the composite organic solid electrolyte is up to 9.9X10<-5> S cm<-1>.

Description

technical field [0001] The invention relates to the technical field of all-solid-state lithium-ion batteries, in particular to a metal-organic framework composite organic polymer solid-state electrolyte and a preparation method and application thereof. Background technique [0002] With the rapid development of human society, a series of global resource and ecological problems have become increasingly prominent, such as the crisis of traditional fossil energy, environmental pollution, and climate warming. In the face of the current severe situation, the development of green and efficient new energy can effectively alleviate the contradiction between the development of human society and environmental resources [0003] . Lithium-ion batteries have gradually become the focus of the new energy field due to their advantages such as environmental friendliness, light weight, small size, high energy density, and long cycle life. [0004] At present, commercial lithium-ion batteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0565H01M10/0525
CPCH01M10/0565H01M10/0525H01M2300/0082H01M2300/0088Y02E60/10
Inventor 王朝阳敖小虎雷志文叶庆勤叶维邓永红
Owner SOUTH CHINA UNIV OF TECH