Rechargeable aluminum-sulfur battery and preparation method thereof

An aluminum-sulfur battery, carbon-sulfur technology, applied in the field of secondary aluminum-sulfur batteries, can solve the problems of small open circuit potential and low energy density, and achieve the effect of improving activity, high capacity, and improving capacity characteristics

Inactive Publication Date: 2010-06-30
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 primary batteries, the present invention provides a rechargeable aluminum-sulfur battery and a preparation method thereof, which is a non-aqueous electrolyte secondary aluminum-sulfur battery with 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

[0038] Preparation of positive electrode active material polythiocyclopentadiene: After mixing anhydrous sodium sulfide and sublimated sulfur at a molar ratio of 1:3, add quantitative N, N-dimethyl base formamide, stirred at room temperature for 2 hours, then heated to 60-80°C and continued to stir for 12 hours, protected by inert gas, to obtain sodium polysulfide solution, at a temperature of 80-100°C, according to the molar ratio Na:Cl=1: 1 ratio, hexachlorocyclopentadiene was added to the sodium polysulfide solution, the temperature was maintained, and the reaction was carried out with stirring for 24 hours. After the reaction, the polythiocyclopentadiene product was obtained by washing and suction filtration, and then vacuum-dried at 80° C. for 24 hours to obtain a powder product.

Embodiment 2

[0040] Preparation of aluminum foam as the negative electrode active material: put the polystyrene foam base material after conductive treatment as the cathode into the electroplating tank of the ionic liquid formed by the reaction of aluminum chloride and phenyltrimethylammonium chloride in a ratio of 2:1 , with metal aluminum sheet as anode, aluminum is electrodeposited by DC and pulse electroplating method, the temperature of the electrolyte is controlled at 50-95°C; the electrodeposition time is 1-2 hours, and the electroplating current density is selected to be 0.005A-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

[0042] 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. Using carbon-sulfur composite material (mass ratio 1:3) as the positive electrode material, adding conductive agent SUPER-P and binder PVDF, the mass ratio is 7:2:1, making a positive electrode active material slurry in an organic solvent and coating it on the set. On the fluid, it is dried and rolled into a positive electrode sheet, and then the positive electrode sheet 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- Phenyltrimethylammonium chlori...

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Abstract

The invention discloses a rechargeable aluminum-sulfur battery and a preparation method thereof. The rechargeable aluminum-sulfur battery is prepared by adopting metallic aluminum or aluminum alloy, preferably foamed aluminum as cathode, polymeric organosulfides as anode active substances, and halogenated aluminic acid ionic liquid formed by halogenated aluminum with any one of quaternary ammonium salt, quaternary phosphor salt or quaternary sulfosalt as electrolyte. The rechargeable aluminum-sulfur battery has high energy density, good circulation performance, safety and environmental protection, no pollution in preparation process, low cost and simple technique, thus having good 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 Applications(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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