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A composite all-solid polymer electrolyte material and its preparation method

A technology of all-solid polymers and electrolyte materials, which is applied in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, circuits, etc., can solve the problems of low ion conductivity and achieve the goal of improving ion conductivity, increasing free volume, and increasing solubility Effect

Inactive Publication Date: 2017-12-01
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • A composite all-solid polymer electrolyte material and its preparation method
  • A composite all-solid polymer electrolyte material and its preparation method
  • A composite all-solid polymer electrolyte material and its preparation method

Examples

Experimental program
Comparison scheme
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 put the mixed solution in oil at 130°C Stirring reaction under the bath for 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 temperatu...

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 polymer electrolyte material and a preparation method thereof. The raw materials include the following components in parts by mass: 10-30 parts of carboxylated nitrile rubber; 70-90 parts of epoxidized natural rubber; 30-50 parts of lithium salt; 5-30 parts of epoxidized oligomer clathrate silsesquioxane-terminal carboxylated polyethylene glycol graft copolymer. In the invention, the above raw materials are dissolved in tetrahydrofuran solvent at room temperature, a solution casting method is adopted and the solvent is evaporated to obtain a composite all-solid polymer electrolyte. Compared with the existing technology, due to the combination of the polymer matrix and the filler used, it has the advantage of higher room temperature conductivity. When the filler is added to 25 parts, the conductivity at room temperature reaches the maximum, which is 2.571×10‑5S cm-1; and the material is easy to prepare, environmentally friendly, and low-cost, and has potential application value in the industrial production of lithium batteries.

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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Patent Type & Authority Patents(China)
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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