Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Rechargeable aluminium-sulfur battery and preparation method thereof

An aluminum-sulfur battery and electrolyte technology, which is applied in the field of electrochemical and chemical power supply products, can solve problems such as low energy density and small open circuit potential, and achieve the effects of high capacity, improved activity, and increased effective reaction area

Inactive Publication Date: 2012-05-09
无锡欧力达新能源电力科技有限公司
View PDF0 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Preparation of positive electrode active material polythiobenzene: after mixing anhydrous sodium sulfide and sublimated sulfur at a molar ratio of 1:3, add quantitative N,N-dimethylformamide according to the standard of 250mL / mol sublimated sulfur, Stir at room temperature for 2 hours, then raise the temperature to 60-80°C and continue to stir for 12 hours, under inert gas protection, to obtain a sodium polysulfide solution. At a temperature of 80-100°C, according to the ratio of Na:Cl=1:1, six Chlorobenzene was added to the sodium polysulfide solution, and the temperature was kept, stirred to allow the reaction to proceed for 24 hours. After the reaction was completed, the polythiobenzene 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

[0036] Preparation of modified aluminum or aluminum alloy powder material coated with nanometer surface of negative electrode material: Put aluminum or aluminum alloy powder and ground and sieved PEO powder into a ball mill at a mass ratio of 1:3 to grind and mix, and place the mixture in a tubular In a resistance furnace, under the protection of argon gas, heat and decompose and compound at 350°C for 3 hours, and cool naturally to obtain the aluminum or aluminum alloy powder negative electrode material coated with nano-carbon on the surface.

Embodiment 3

[0038] The positive electrode active material polythiobenzene, adding conductive agent SUPER-P and binder PVDF, the mass ratio is 7:2:1, adding an organic solvent to make a positive electrode active material slurry coated on the current collector, drying and rolling into positive electrode sheet, and then the positive electrode sheet glass fiber non-woven diaphragm and aluminum sheet as the negative electrode active material are wound into an electric core and loaded into a nickel-plated steel shell, and then aluminum chloride-phenyltrimethylammonium chloride ions are added Liquid electrolyte, sealed to make AA-type cylindrical aluminum secondary battery. During the battery charge and discharge cycle test, charge to 2.4V at 1C, discharge to 1.2V at 0.5C, the open circuit voltage of the battery is 1.78V, the highest discharge capacity is 883mAh, and the discharge capacity after 50 charge and discharge cycles is 721mAh.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a rechargeable aluminium-sulfur battery and a preparation method thereof. The battery is prepared by using nanometer surface-coated modified aluminium or aluminium alloy powder as a negative pole, using polysulfide benzene as a positive active material, and using halogen aluminate ionic liquid formed by an aluminium halide and any of quaternary ammonium salt, phosphonium salt or sulfonium salt as an electrolyte. The battery has the characteristics of high energy density, good cycle performance, safety, environmental protection without pollution in preparation processes, low cost and simple process, and has good application prospects.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com