Aluminum secondary battery and aluminum storage active material thereof

A technology for aluminum secondary batteries and cathode active materials, applied in secondary batteries, battery electrodes, non-aqueous electrolyte storage batteries, etc., can solve problems such as poor cycle performance, limited reversible capacity of devices, and mismatch of high specific capacity values ​​of metal aluminum , achieve the effects of low cost, improved electrochemical reaction kinetics, and shortened transport length

Pending Publication Date: 2021-04-20
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Graphite cathode materials have been well studied in aluminum secondary battery electrode materials, because they can achieve stable and reversible intercalation of ions, but because graphite materials can only achieve AlCl 4 - Intercalation and extraction of anions, the reversible capacity of the assembled device is very limited, which does not match the high specific capacity value of metal aluminum
Although the elemental sulfur electrode has a high capacity, the volume expansion of elemental sulfur and the shuttling of polysulfides lead to extremely poor cycle performance.

Method used

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  • Aluminum secondary battery and aluminum storage active material thereof
  • Aluminum secondary battery and aluminum storage active material thereof
  • Aluminum secondary battery and aluminum storage active material thereof

Examples

Experimental program
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preparation example 1

[0040] According to the molar ratio of the reaction substances being basically 1:5, 1.127 g of thioacetamide powder and 0.351 g of ammonium metavanadate powder were weighed respectively. Add 30mL deionized water to a beaker, add the weighed ammonium metavanadate, stir magnetically for 30 minutes in an oil bath at 80°C, and completely dissolve to form solution A; add 30mL ethylene glycol reagent to another beaker, add Weighed thioacetamide (CH 3 CSNH 2 ), stirred magnetically for 10 minutes to form solution B; introduced solution B into solution A, added sodium hydroxide (NaOH) to adjust the pH to 8; stirred magnetically for 30 minutes under the temperature condition of 80°C to fully mix, and transferred the above solution to 100mL In a stainless steel high-pressure reactor with a polytetrafluoroethylene liner, the solvothermal reaction was carried out at a temperature of 160°C, and the reaction time was 24 hours; after the product was naturally cooled to room temperature, it ...

preparation example 2

[0044] According to the molar ratio of the reaction substances being basically 1:5, 1.127 g of thioacetamide powder and 0.351 g of ammonium metavanadate powder were weighed respectively. Add 30mL deionized water to a beaker, add the weighed ammonium metavanadate, stir magnetically for 30 minutes in an oil bath at 80°C, and completely dissolve to form solution A; add 30mL ethylene glycol reagent to another beaker, add Weighed thioacetamide (CH 3 CSNH 2 ), stirred magnetically for 10 minutes to form solution B; introduced solution B into solution A, added sodium hydroxide (NaOH) to adjust the pH to 10; stirred magnetically for 30 minutes under the temperature condition of 80°C to fully mix, and transferred the above solution to 100mL In a stainless steel high-pressure reactor with a polytetrafluoroethylene liner, the solvothermal reaction was carried out at a temperature of 160°C, and the reaction time was 24 hours; after the product was naturally cooled to room temperature, it...

preparation example 3

[0046] According to the molar ratio of the reaction substances being basically 1:5, 1.127 g of thioacetamide powder and 0.351 g of ammonium metavanadate powder were weighed respectively. Add 30mL deionized water to a beaker, add the weighed ammonium metavanadate, stir magnetically for 30 minutes in an oil bath at 80°C, and completely dissolve to form solution A; add 30mL ethylene glycol reagent to another beaker, add Weighed thioacetamide (CH 3 CSNH 2 ), stirred magnetically for 10 minutes to form solution B; introduced solution B into solution A, added sodium hydroxide (NaOH) to adjust the pH to 12; stirred magnetically for 30 minutes under the temperature condition of 80°C to fully mix, and transferred the above solution to 100mL In a stainless steel high-pressure reactor with a polytetrafluoroethylene liner, the solvothermal reaction was carried out at a temperature of 160°C, and the reaction time was 24 hours; after the product was naturally cooled to room temperature, it...

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Abstract

The invention discloses an aluminum secondary battery and an aluminum storage active material thereof. According to the invention, three-dimensional self-assembled nano vanadium tetrasulfide (VS4) is synthesized by adopting an organic solvent assisted solvothermal reaction process and combining specific conditions, and is used as a positive electrode active material of an aluminum secondary battery. The three-dimensional self-assembled nanostructure is very suitable for being used as an aluminum storage material, has the characteristics of chain crystal structure with chain spacing, weak interaction between adjacent chains, high sulfur content and the like, not only can provide more potential sites for intercalation and deintercalation of ions, but also can improve charge transfer, and therefore, the cycle performance of the aluminum secondary battery can be stably improved.

Description

technical field [0001] The invention relates to an aluminum secondary battery, in particular to a positive electrode material for the aluminum secondary battery. Background technique [0002] Since the industrial revolution in the 20th century, science and technology have continued to advance. The exploitation and use of fossil fuels have provided us with many conveniences and promoted the development of society. However, at the same time, the excessive use of these fuels has caused serious environmental problems, such as Global warming, acid rain, smog, etc. In addition, with the continuous exploitation and consumption, the reserves of fossil fuels are becoming increasingly depleted, and the energy crisis is becoming increasingly prominent. In order to alleviate these two serious problems, the development and use of clean energy such as solar energy, tidal energy, wind energy, and geothermal energy have emerged as the times require. Clean energy has the advantages of wide s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G31/00H01M4/58H01M10/054H01M10/058B82Y30/00B82Y40/00
CPCY02E60/10Y02P70/50
Inventor 吴川韩晓敏吴锋白莹
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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