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Composite all-solid-state polymer electrolyte material and preparation method thereof

An all-solid-state polymer and electrolyte material technology, used in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, circuits, etc. Effect

Inactive Publication Date: 2016-01-27
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the ionic conductivity of SPE is relatively low compared to liquid and gel electrolytes

Method used

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  • Composite all-solid-state polymer electrolyte material and preparation method thereof
  • Composite all-solid-state polymer electrolyte material and preparation method thereof
  • Composite all-solid-state polymer electrolyte material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1～6

[0043] (1) Preparation of epoxidized oligomer clathrate silsesquioxane-terminated carboxylated polyethylene glycol graft copolymer

[0044] a. Dissolve 0.15g of epoxidized oligomer clathrate silsesquioxane and 1.70g of carboxylated polyethylene glycol in 25ml of N,N-dimethylformamide solvent, and place the mixed solution in an oil bath at 130°C Down stirring reaction 4 hours;

[0045] b. Evaporate the reacted solution in a rotary evaporator until it becomes viscous, then take it out, and place the mixture in a vacuum oven at 120°C for 2 hours to a constant weight to remove the solvent to obtain the epoxidized oligomer clathrate Semisiloxane-end carboxylated polyethylene glycol graft copolymerization product;

[0046] (2) Epoxidized natural rubber-carboxylated nitrile rubber / epoxidized oligomer clathrate silsesquioxane-terminated carboxylated polyethylene glycol / lithium perchlorate composite all-solid polymer electrolyte material preparation

[0047] a. At room temperature, ...

Embodiment 7

[0063] A method for preparing a composite all-solid polymer electrolyte material,

[0064] (1) Preparation of epoxidized oligomer clathrate silsesquioxane-terminated carboxylated polyethylene glycol graft copolymer:

[0065] a. The epoxidized oligomer clathrate silsesquioxane and carboxylated polyethylene glycol are dissolved in N,N-dimethylformamide solvent according to the molar ratio of functional groups, that is, the mass ratio is 1:11.3 , the mixed solution was stirred and reacted in an oil bath at 130°C for 4 hours;

[0066] b. Evaporate the reacted solution in a rotary evaporator until it becomes viscous, then take it out, put the mixture in a vacuum oven at 120°C and dry it to constant weight to remove the solvent, and obtain the epoxidized oligomer cage-shaped sesquite Siloxane-terminated carboxylated polyethylene glycol graft copolymer;

[0067] (2) Epoxidized natural rubber-carboxylated nitrile rubber / epoxidized oligomer clathrate silsesquioxane-terminated carboxy...

Embodiment 8

[0072] A method for preparing a composite all-solid polymer electrolyte material,

[0073] (1) Preparation of epoxidized oligomer clathrate silsesquioxane-terminated carboxylated polyethylene glycol graft copolymer:

[0074] a. The epoxidized oligomer clathrate silsesquioxane and carboxylated polyethylene glycol are dissolved in N,N-dimethylformamide solvent according to the molar ratio of functional groups, that is, the mass ratio is 1:11.3 , the mixed solution was stirred and reacted in an oil bath at 130°C for 4 hours;

[0075] b. Evaporate the reacted solution in a rotary evaporator until it becomes viscous, then take it out, put the mixture in a vacuum oven at 120°C and dry it to constant weight to remove the solvent, and obtain the epoxidized oligomer cage-shaped sesquite Siloxane-terminated carboxylated polyethylene glycol graft copolymer;

[0076] (2) Epoxidized natural rubber-carboxylated nitrile rubber / epoxidized oligomer clathrate silsesquioxane-terminated carboxy...

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Abstract

The invention relates to a composite all-solid-state polymer electrolyte material and a preparation method thereof. The raw materials comprise the following constituents based on mass: 10-30 parts of carboxyl nitrile rubber, 70-90 parts of epoxidized natural rubber, 30-50 parts of lithium perchlorate salt and 5-30 parts of epoxidized low-polymer cage type silsesquioxane-carboxyl-terminated polyethylene glycol grafted copolymer. According to the preparation method, the composite all-solid-state polymer electrolyte is obtained by dissolving the above raw materials in a tetrahydrofuran solvent, carrying out a solution casting method and evaporating the solvent. Compared with the prior art, the composite, the adopted polymer substrate and a filler are matched, so that the composite all-solid-state polymer electrolyte material has the advantages of relatively high room-temperature conductivity; when 25 parts of filler is added, the conductivity at a room temperature reaches maximum and is 2.571*10<-5> S.cm<-1>; and moreover, the material is easy to prepare, is low in cost, is environment friendly, and has potential application value in industrial manufacturing of a lithium battery.

Description

technical field [0001] The invention relates to a preparation method of a solid polymer electrolyte, in particular to a preparation method of a composite all-solid polymer electrolyte material. Background technique [0002] Solid polymer electrolyte (SPE) is a complex system formed by dissolving an alkali metal salt in a polymer matrix through coordination and complexation, which can also dissolve the supporting electrolyte like a liquid when it is in a solid state, and can also undergo ion migration. . Since Wright first reported that the SPE system of polyethylene oxide / alkali metal salt has ionic conductivity in 1973, research on polymer electrolytes has spread rapidly all over the world. The application and development of color rendering and sensors are of great significance. [0003] The polymer solid electrolyte is characterized by certain ionic conductivity, wide electrochemical window, and the advantages of easy film formation, softness, light weight, and good elas...

Claims

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Application Information

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IPC IPC(8): H01M10/0565H01M10/058
CPCH01M10/0565H01M10/058Y02E60/10Y02P70/50
Inventor 梅花王冉任文坛张勇
Owner SHANGHAI JIAO TONG UNIV
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