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Rechargeable aluminum battery and preparation method thereof

An aluminum battery and battery shell technology, applied in the fields of electrochemical and chemical power products, can solve the problems of low energy density and low open circuit potential, and achieve the effects of high capacity, improved activity and less dendrites

Inactive Publication Date: 2013-06-19
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 the existing electrolytic aluminum batteries, such as low energy density, small open circuit potential and some being primary batteries, the present invention provides a rechargeable aluminum battery and a preparation method thereof, which is a secondary aluminum-sulfur battery with a non-aqueous electrolyte. The advantages of large open circuit voltage and repeated charge and discharge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of positive electrode active material vulcanized polyvinyl chloride: mix 3.94g sodium sulfide and 4.85g sublimated sulfur, place in 40ml DMF solvent, stir at room temperature for 2h, then raise the reaction temperature to 80°C and continue stirring for 12h, inert gas protection to obtain sodium polysulfide solution. Dissolve 6.25g of polyvinyl chloride (number-average molecular weight: 200,000) in 150ml of DMF to obtain a transparent and clear solution. Stir the solution at 80°C and add the above-mentioned sodium polysulfide solution dropwise. The dropping process takes 1h, and the dropping After the addition, keep stirring at 100°C for 24h, under the protection of inert gas, wash and filter with suction to obtain the vulcanized polyvinyl chloride product, and then vacuum-dry at 80°C for 24 hours to obtain a powder product.

Embodiment 2

[0039] Preparation of aluminum foam as the negative electrode active material: put the base material after conductive treatment as the cathode into AlCl 3 - In the electroplating tank of triethylamine hydrochloride ionic liquid, metal aluminum sheet is used as the anode, and aluminum is electrodeposited by direct current and pulse electroplating methods, and the temperature of the electrolyte is controlled at 50-95°C; the electrodeposition time is 1-2 hours, and the electroplating current density Choose from 0.005A to 0.01A / cm 2 During the electroplating process, the electrolyte is constantly stirred. After electroplating, the aluminum foam is heat-treated at a temperature of 400-500°C for 10-60 minutes, and then heat-treated at a temperature of 500-600°C for 20-60 minutes in a hydrogen atmosphere, and the obtained product is obtained after cooling. Necessary aluminum foam anode material.

Embodiment 3

[0041] 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. Use carbon-sulfur composite material (mass ratio 1:3) as the positive electrode material, add conductive agent SUPER-P and binder PVDF at a ratio of 7:2:1, add an organic solvent to make a positive electrode active material slurry and coat it on the current collector Then, 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 trichloride and benzene are added. The ionic liquid electrolyte formed by trimethylammonium chloride in a ratio of 2:1 i...

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Abstract

The invention discloses a rechargeable aluminum battery and a preparation method thereof. The rechargeable aluminum battery is prepared by selecting metal aluminum or an aluminum alloy, preferable foamed aluminum, as a cathode, taking vulcanized polyvinyl chloride or a carbon-sulfur compound material as an anode active substance and taking aluminic acid halide ionic liquid formed by aluminum halide and any one of quaternary ammonium salt or quaternary microcosmic salt or quaternary sulfosalt a electrolyte. The rechargeable aluminum battery has the advantages of high battery energy density, good circulation performance, safety, environmental protection, pollution-free preparation process, low cost, simple process and vast application prospect.

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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