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Lithium air battery ionic liquid electrolyte and air battery preparation method

A lithium-air battery and ionic liquid technology, applied in the preparation of lithium-air battery ionic liquid electrolyte and air battery, electrolyte and air battery preparation, can solve problems such as battery performance degradation, achieve wide liquid temperature range, strong practicability, and improve Effects of specific capacity and safety

Inactive Publication Date: 2018-12-04
武汉霖泉环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the problem of battery performance degradation caused by electrolyte decomposition in the prior art, and provides a lithium-air battery ionic liquid electrolyte and an air battery preparation method

Method used

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  • Lithium air battery ionic liquid electrolyte and air battery preparation method
  • Lithium air battery ionic liquid electrolyte and air battery preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0030] This example provides a preparation method for 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid, which specifically includes:

[0031] Step 1: Measure 100-500mL of N-methylimidazole with a mass fraction of 99-99.5% in a 2000-3000mL flask, and continuously pass in argon protection. In an argon environment, heat the water bath to 30°C. Under rapid stirring, add bromoethane drop by drop with a constant pressure separatory funnel, wherein the volume ratio of bromoethane added to N-methylimidazole is 2-1.5:1; the mixture is refluxed at 30°C for 8-10 hours , until the reactant completely turned into a light yellow viscous liquid, cooled to room temperature to obtain the crude product;

[0032] Step 2: wash the crude product described in step 1 with ethyl acetate for 3 to 5 times, and the consumption of ethyl acetate is 30 to 100 mL; then put it into a vacuum oven at 70 to 100° C. pure crude product;

[0033] Step 3: Add the crude product described in step 2 into a...

Embodiment 2

[0037] The assembly of embodiment 2 lithium-air batteries

[0038] The ionic liquid electrolyte prepared in Example 1 was placed between the lithium negative electrode and the air electrode of the lithium-air battery in a glove box, and assembled into a lithium-air battery by sealing the casing.

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Abstract

The invention relates to an electrolyte and an air battery preparation method, which belong to the technical field of new energy, and in particular to a lithium air battery ionic liquid electrolyte and an air battery preparation method. The electrolyte of the invention has good material compatibility, does not react with other structures of the battery; has wide electrochemical window and high electrochemical stability, and can meet the application of high voltage and high capacity battery systems; has low toxicity, and is environmentally friendly. The lithium air battery made of electrolyte improves the specific capacity and safety of the battery, has strong practicability, and establishes a foundation for the next large-scale production.

Description

technical field [0001] The invention relates to an electrolyte and a method for preparing an air battery, belonging to the technical field of new energy, in particular to a method for preparing an ionic liquid electrolyte for a lithium-air battery and an air battery. Background technique [0002] In recent years, the market for portable electronic products, electric vehicles and energy storage has continued to expand. Even if lithium-ion batteries are fully developed, they cannot meet the energy storage requirements required by society. The development of new energy in the future requires a new type of battery system with high specific energy to play a role. High specific energy metal-air batteries (such as: zinc-air, lithium-air) use the oxygen in the air for reduction, and the air is not stored in the battery, so the specific energy of the battery can be greatly increased. Since oxygen is not stored inside the battery, and the chemical equivalent of metal lithium (3860mAh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0565H01M12/08
CPCH01M10/0565H01M12/08Y02E60/10
Inventor 熊木兵侯大军李慧汪杰明黄琨李卓益
Owner 武汉霖泉环保科技有限公司
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