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Secondary aluminium cell and preparation method thereof

A secondary aluminum battery and electrolyte technology, applied in the field of electrochemical and chemical power products, can solve the problems of small open circuit potential and low energy density, and achieve the effect of improving activity, high capacity and wide material sources

Inactive Publication Date: 2012-05-09
无锡欧力达新能源电力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the shortcomings of existing electrolytic aluminum batteries, such as low energy density, small open circuit potential, and some primary batteries, the present invention provides a secondary aluminum battery and a preparation method thereof, which is a non-aqueous electrolyte secondary aluminum-sulfur battery with an open circuit The advantages of large voltage and repeated charge and discharge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The positive electrode active material vulcanized polyacrylonitrile is prepared by the following method: polyacrylonitrile and sublimed sulfur are mixed according to a molar ratio of 1:3 and then added to a ball mill tank, and quantitative anhydrous The ethanol was stirred evenly, stirred by ball milling at room temperature for 6 hours, and then vacuum-dried at 80° C. for 24 hours. Put the dried mixture into a high-pressure tank for heating and compounding, adopt segmental heating and compounding, keep it at 200°C for 2 hours, continue heating, keep it at 450°C for 3 hours, protect it with inert gas, and obtain vulcanized polyacrylonitrile powder after natural cooling product.

Embodiment 2

[0037] The preparation of the negative electrode active material chemical activation treatment aluminum sheet: put the aluminum sheet into the NaOH solution with a concentration of 2mol / L for 1 minute, then wash it with distilled water; then put it into the HCl solution with a concentration of 2mol / L for 2 minutes, Then wash with distilled water; finally, put in HNO with a concentration of 40g / L 3 The solution was treated for 90 seconds, then rinsed with distilled water, and air-dried.

Embodiment 3

[0039] Activated carbon and elemental sulfur are mixed in a mass ratio of 1:3 and placed in a ball milling tank, ball milled for 6 hours at a ball-to-material ratio of 1:1 at a speed of 200r / min, and then placed in a resistance furnace under argon protection at 350°C After heating and compounding for 3 hours, carbon-sulfur composite materials were obtained after natural cooling. Taking carbon-sulfur composite material (mass ratio 1:3) as the positive electrode material, adding conductive agent SUPER-P and binder PVDF, the weight ratio is 7:2:1, making a positive electrode active material slurry in an organic solvent and coating it on On the nickel foam substrate, it is dried and rolled into a pole piece, and the negative electrode made of glass fiber non-woven diaphragm and aluminum sheet as the negative electrode active material is wound into an electric core and put into a nickel-plated steel shell, and then aluminum chloride and benzene are added. The ionic liquid electroly...

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Abstract

The invention discloses a secondary aluminium cell and a preparation method thereof. Foamed aluminium serves as a cathode. A carbon and sulfur composite material or sulfurized polyacrylonitrile serves as an anode active material. A halogen aluminate ionic liquid formed from halogen aluminium acid and any one of halogenated quaternary ammonium salt, quaternary alkylphosphonium salt or quaternary sulfosalt is obtained by preparing electrolyte. The cell has the advantages of high energy density, good cycle performance, safety, environmental protection, no pollution in the preparation process, low cost and simple process.

Description

technical field [0001] The invention relates to a secondary aluminum-sulfur battery using ionic liquid electrolyte. It belongs to the technical field of electrochemical and chemical power supply products. Background technique [0002] The development of modern science and technology, the shortage of energy and the increasing emphasis on environmental protection require rechargeable batteries with high energy density, low price, abundant resources, safe use, and environmental friendliness. Aluminum battery is one of the batteries with the highest energy density, and has no pollution to the environment. The raw material resources used are abundant, cheap and safe to use, which is in line with the direction of battery development. Metal aluminum is a high-energy carrier as the negative electrode of the battery, with a theoretical specific capacity of 2980mAh / g, second only to lithium (3870mAh / g); and a volume specific capacity of 8050mAh / cm 3 , 4 times that of lithium, higher...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/054H01M10/058
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 赵宇光黄兆丰
Owner 无锡欧力达新能源电力科技有限公司
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