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Solid-state ionic gel polymer electrolyte and preparation method thereof

An ion gel, polymer technology, applied in the direction of electrolyte immobilization/gelation, circuits, electrical components, etc., can solve the problems of poor safety, weak ion transport ability, etc., to achieve good flexibility, electrochemical and interface stability Good and safe effect

Active Publication Date: 2018-11-30
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a solid ion gel polymer electrolyte capable of improving battery ion transport capacity and safety and its Preparation

Method used

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  • Solid-state ionic gel polymer electrolyte and preparation method thereof
  • Solid-state ionic gel polymer electrolyte and preparation method thereof

Examples

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Embodiment 1

[0033] Preparation of lithium salt ionic liquid solution: In an argon atmosphere glove box, take 5.74 mg of lithium bistrifluoromethanesulfonimide and add it to a 50 ml reagent bottle, then add 20 ml of 1-butyl-1-propylpyrrolidinium After the bis(trifluoromethylsulfonyl)imide ionic liquid is completely dissolved at room temperature, a uniform lithium ion concentration of 1.0 mol / L lithium salt ionic liquid solution is obtained.

[0034] Preparation of polymer solution: 93.26 mg of polyethylene oxide (PEO) with an average molecular weight of 600,000 was added to 3 ml of anhydrous acetonitrile solution, and stirred at room temperature for 30 min until completely dissolved.

[0035] Preparation of inorganic nano-precursor solution: 550 μL of tetraethyl silicate was added to 800 μL of formic acid solution, and stirred at room temperature for 10 min to obtain a uniform mixed solution.

[0036] Preparation of solid ion gel polymer electrolyte: take 2.20ml of lithium salt ionic liqui...

Embodiment 2

[0041] Preparation of lithium salt ionic liquid solution: In an argon atmosphere glove box, take 5.74 mg of lithium bistrifluoromethanesulfonimide and add it to a 50 ml reagent bottle, then add 20 ml of 1-butyl-1-propylpyrrolidinium After the bis(trifluoromethylsulfonyl)imide ionic liquid is completely dissolved at room temperature, a uniform lithium ion concentration of 1.0 mol / L lithium salt ionic liquid solution is obtained.

[0042] Preparation of polymer solution: 62.50 mg of polyethylene oxide (PEO) with an average molecular weight of 600,000 was added to 3 ml of anhydrous acetonitrile solution, and stirred at room temperature for 30 min until completely dissolved.

[0043]Preparation of inorganic nano-precursor solution: 550 μL of tetraethyl silicate was added to 800 μL of formic acid solution, and stirred at room temperature for 10 min to obtain a uniform mixed solution.

[0044] Preparation of solid ion gel polymer electrolyte: take 1.48ml of lithium salt ionic liquid...

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Abstract

The invention discloses a solid-state ionic gel polymer electrolyte and a preparation method thereof. The preparation method of the solid-state ionic gel polymer electrolyte comprises a step of performing mixing and infiltration on ionic liquid dissolved with lithium salt and an inorganic / organic hybrid material having a three-dimensional network structure so as to form a solid-state ionic gel compound material. While the solid-state ionic gel compound material is used as the electrolyte, the mechanical performance and the ion transmission capability of the polymer electrolyte can be ensured at the same time. The solid-state ionic gel polymer electrolyte disclosed by the invention shows better flexibility and mechanical performance, and has higher safety performance. Due to cooperative application of the electrolyte and proper positive pole, positive pole active substances is enabled to have higher specific volume and have excellent application prospect.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a solid ion gel polymer electrolyte and a preparation method thereof. Background technique [0002] With the depletion of global fossil energy and the increasingly serious environmental pollution problems, the development of renewable energy and the cultivation of new energy industries have become an inevitable trend in the world. Due to the uncontrollability and instability of renewable energy, it is necessary to use a safe and reliable energy storage system. Therefore, it is imminent to establish an efficient, clean, economical and safe battery system. As one of the most important components in the battery, the electrolyte has a vital impact on the electrochemical reaction, morphology and efficiency of the positive and negative electrodes. A good battery electrolyte should meet the following requirements: 1. The electrolyte has high electrical conductivity; 2. It...

Claims

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Application Information

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IPC IPC(8): H01M10/0565H01M10/0525
CPCH01M10/0525H01M10/0565H01M2300/0085Y02E60/10
Inventor 颜洋谢进仓张亚博崔楠李冲
Owner DALIAN UNIV OF TECH
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