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Battery taking bromine-containing ionic liquid as positive electrode active material and assembling method thereof

A technology for ionic liquids and batteries, which can be used in the manufacture of non-aqueous electrolyte batteries, electrolyte batteries, and battery electrodes. It can solve the problems of slow kinetics and inactivity, and achieve high specific energy, mature production technology, and low prices.

Active Publication Date: 2018-02-06
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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  • Battery taking bromine-containing ionic liquid as positive electrode active material and assembling method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0054] A kind of battery, comprises positive pole compartment and negative pole compartment that are separated by Nafion film; In the electrolyte solution of positive pole compartment, comprise tetraethylammonium tribromide, in negative pole compartment, inject ionic liquid electrolyte; In positive pole compartment, insert carbon nanotube The positive electrode and the negative electrode chamber are immersed in an aluminum negative electrode.

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

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

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

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

[0059] (3) Insert the carbon nanotube positive electrode into the posit...

Embodiment 2

[0061] Compared with Example 1, the Selemion membrane is used instead of the Nafion membrane, and the others are the same as in Example 1.

Embodiment 3

[0063] Compared with Example 1, the Nafion film is replaced by a Daramic film, and the others are the same as in Example 1.

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Abstract

The invention relates to a battery taking bromine-containing ionic liquid as a positive electrode active material and an assembling method thereof. The battery comprises a positive electrode chamber and a negative electrode chamber, which are separated through a cation-exchange membrane; electrolyte of the positive electrode chamber comprises the bromine-containing ionic liquid; ionic liquid electrolyte is injected into the negative electrode chamber. The bromine-containing ionic liquid in the battery provided by the invention is obtained by taking a bromine elementary substance and organic salt to react. According to the battery provided by the invention, the ionic liquid is used as the electrolyte, the bromine-containing ionic liquid is used as the positive electrode active material, aluminum or magnesium is used as a negative electrode, and aluminum and magnesium electrodes have no passivation films in the ionic liquid so that the battery has relatively high reversibility; the battery is a cheap, environment-friendly and 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 assembly method thereof, in particular to a battery using a bromine-containing ionic liquid as a positive electrode active material and an assembly method thereof. Background technique [0002] Lithium-ion batteries were once considered to be the power batteries with the most development potential for electric vehicles; however, with the development of precious metals such as nickel, cobalt, and lithium, the raw materials of lithium-ion power batteries have risen sharply. In comparison, 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 its development. Therefore, the development and production of secondary batteries with low cost, environmental friendliness a...

Claims

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Application Information

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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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