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A battery using bromine-containing ionic liquid as a positive electrode active material and its assembly method

An ionic liquid and battery technology, used in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, battery electrodes, etc., can solve the problems of slow kinetics and inactivity, achieve high specific energy, mature production technology, and prolong cycle life.

Active Publication Date: 2020-03-27
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the system with water, there is a serious hydrogen evolution reaction of aluminum and magnesium as electrodes; in the organic system, aluminum and magnesium have thicker passivation films, and Al 3+ , Mg 2+ It is very slow for ions to migrate through the passivation film into the electrolyte, so aluminum and magnesium electrodes show kinetic sluggishness and inactivity, which restrict their application

Method used

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  • A battery using bromine-containing ionic liquid as a positive electrode active material and its assembly method

Examples

Experimental program
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Effect test

Embodiment 1

[0054] A battery includes a positive electrode chamber and a negative electrode chamber separated by a Nafion membrane; the electrolyte in the positive electrode chamber includes tetraethylammonium tribromide, and the negative electrode chamber is injected with an ionic liquid electrolyte; carbon nanotubes are inserted into the positive electrode chamber The positive electrode, the negative electrode chamber is immersed with an aluminum negative electrode.

[0055] The ionic liquid electrolyte is prepared by mixing anhydrous aluminum chloride and 1-ethyl-3-methyl-imidazolium chloride in a molar ratio of 2:1.

[0056] The assembling method of the battery specifically includes the following steps:

[0057] (1) The carbon nanotube positive electrode, tetraethylammonium tribromide, and ionic liquid electrolyte are placed in a glove box filled with argon;

[0058] (2) Use Nafion membrane and sealing ring for lamination and assembly;

[0059] (3) Insert the positive electrode of t...

Embodiment 2

[0061] Compared with Example 1, the Selemion film was used instead of the Nafion film, and the others were the same as in Example 1.

Embodiment 3

[0063] Compared with Example 1, Daramic film was used instead of Nafion film, and the others were the same as Example 1.

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Abstract

The invention relates to a battery using bromine-containing ionic liquid as a positive electrode active material and an assembly method thereof. The battery includes a positive electrode chamber and a negative electrode chamber separated by a cation exchange membrane; the electrolyte in the positive electrode chamber contains bromine-containing an ionic liquid, and the negative electrode chamber is injected with an ionic liquid electrolyte. The bromine-containing ionic liquid in the present invention is obtained by reacting bromine simple substance with an organic salt. The present invention adopts ionic liquid as electrolyte, uses bromine-containing ionic liquid as positive electrode active material, and uses aluminum or magnesium as negative electrode. Aluminum and magnesium electrodes do not have passivation film in ionic liquid, so they have high reversibility; The invention is a cheap, environmentally friendly, high energy ratio battery system.

Description

technical field [0001] The invention relates to the field of secondary batteries, in particular to a battery and an assembling method thereof, in particular to a battery using a bromine-containing ionic liquid as a positive electrode active material and an assembling method thereof. Background technique [0002] Lithium-ion batteries were once considered to be the most potential power batteries for electric vehicles; however, with the development of precious metals such as nickel, cobalt, and lithium, the raw materials for lithium-ion power batteries have risen sharply. Compared with this, the price has increased by more than 4 times, which seriously restricts the promotion and application of new energy vehicles; the poor safety of lithium-ion power batteries and the poor economic benefits of recycling are also important factors restricting their development. Therefore, research and development and production of inexpensive, environmentally friendly, and high-energy-density ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/38H01M4/60H01M10/0525H01M10/0568H01M10/058
CPCH01M4/38H01M4/381H01M4/60H01M10/0525H01M10/0568H01M10/058Y02E60/10Y02P70/50
Inventor 唐怀远王媛珍王康彦金源
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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