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Rechargeable aluminum battery and preparation method thereof

A technology of aluminum battery and battery shell, which is applied in the field of electrochemical and chemical power supply products, 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 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 active material vulcanized polyvinyl chloride: After mixing 3.94g sodium sulfide and 4.85g sublimation sulfur, put it in 40ml DMF solvent, stir at room temperature for 2h, 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 of 200000) in 150ml of DMF to obtain a transparent and clear solution, stir this solution at 80 ° C and add the above sodium polysulfide solution dropwise. After adding, the mixture was continuously stirred at 100 °C for 24 hours, protected by an inert gas, washed and filtered to obtain a sulfided polyvinyl chloride product, and then vacuum-dried at 80 °C for 24 hours to obtain a powder product.

Embodiment 2

[0039] Preparation of negative electrode active material foamed aluminum: the conductive substrate material is placed in AlCl as a cathode 3 -In the electroplating tank of triethylamine hydrochloric acid ionic liquid, the metal aluminum sheet is used as the anode, and the aluminum is electrodeposited by direct current and pulse electroplating, and the temperature of the electrolyte is controlled at 50~95℃; the electrodeposition time is 1~2 hours, and the electroplating current density The selection is 0.005A~0.01A / cm 2 , During the electroplating process, the electrolyte is continuously stirred. After electroplating, the foamed aluminum 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. The required foam aluminum anode material.

Embodiment 3

[0041] Activated carbon and elemental sulfur were mixed in a mass ratio of 1:3 and placed in a ball mill tank, ball-milled at a ball-to-material ratio of 1:1 and a rotational speed of 200r / min for 6h, and then placed in a resistance furnace under argon protection at 350°C Heating and compounding for 3h, and natural cooling to obtain carbon-sulfur composite material. Using carbon-sulfur composite material (mass ratio 1:3) as the positive electrode material, adding conductive agent SUPER-P and binder PVDF in a ratio of 7:2:1, adding organic solvent to make positive electrode active material slurry and coating it on the current collector Then, the positive electrode glass fiber non-woven separator and aluminum sheet are used as the negative electrode active material, and the negative electrode is wound into an electric core and loaded into a nickel-plated steel shell, and then aluminum trichloride and benzene are added. The ionic liquid electrolyte formed by base trimethylammoniu...

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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 present invention relates to a secondary aluminum-sulfur battery using an ionic liquid electrolyte. It belongs to the technical field of electrochemical and chemical power products. Background technique [0002] The development of modern science and technology, energy shortage and increasing emphasis on environmental protection require high energy density, low price and abundant resources, safe to use, and environmentally friendly rechargeable batteries. Aluminum battery is one of the batteries with the highest energy density, and it does not pollute the environment. The raw materials used are rich in resources, cheap and safe to use, which is in line with the direction of battery development. As a battery negative electrode, metal aluminum is a high-energy carrier with a theoretical specific capacity of 2980mAh / g, second only to lithium (3870mAh / g); and its volumetric specific capacity is 8050mAh / cm 3 , 4 times that of lithium, higher than all o...

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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