Application of quaternary ammonium salt type anthraquinone active substance and organic water-phase salt cavern battery

A technology of active material and negative active material, applied in the field of organic water-phase salt cavern battery, can solve problems such as limited solubility, and achieve the effect of improving energy density

Active Publication Date: 2020-05-22
CHINASALT JINTAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solubility of organic active substances in aqueous solution is limited, so it is necessary to separately design the active substances for aqueous systems to improve their solubility and energy density

Method used

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  • Application of quaternary ammonium salt type anthraquinone active substance and organic water-phase salt cavern battery
  • Application of quaternary ammonium salt type anthraquinone active substance and organic water-phase salt cavern battery
  • Application of quaternary ammonium salt type anthraquinone active substance and organic water-phase salt cavern battery

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preparation example Construction

[0046] Such as figure 1 As shown, in some specific embodiments of the present invention, the preparation method of the quaternary ammonium salt type anthraquinone active substance comprises the following steps:

[0047] S1. 1,8-dihydroxyanthraquinone, bromoalkyltrimethylammonium bromide, potassium carbonate and potassium iodide are stirred and dissolved in N,N-dimethylformamide (DMF) for reaction.

[0048] Optionally, bromoalkyltrimethylammonium bromide (Br-(CH 2 )nN + (CH 3 ) 3 Br - ) in the alkyl chain n=1,2,3.....12.

[0049] According to one embodiment of the present invention, the molar ratio of the reactants in step S1 is: 1,8-dihydroxyanthraquinone:bromoalkyltrimethylammonium bromide:potassium carbonate:potassium iodide:N,N-dimethyl Formamide=1:2~5:2~8:0.01~0.1:10~100.

[0050] In some specific embodiments of the present invention, the reaction temperature in step S1 is 100°C to 200°C, and the reaction time is 10h to 48h, that is to say, 1,8-dihydroxyanthraquinon...

Embodiment 1

[0072] Preparation of anthraquinone type active substances:

[0073] 1,8-dihydroxyanthraquinone and Br-(CH 2 ) 3 N + (CH 3 ) 3 Br - , and potassium carbonate and potassium iodide were stirred and dissolved in N,N-dimethylformamide (DMF) in a certain proportion. Among them, the reactant 1,8-dihydroxyanthraquinone: Br-(CH 2 ) 3 N + (CH 3 ) 3 Br - : Potassium carbonate: Potassium iodide: The molar ratio of DMF is 1:3:5:0.05:50.

[0074] React at 140°C for 24 hours, cool to room temperature after completion, and filter with suction. After suction filtration, add excess tetrabutylammonium chloride to the filtrate, perform suction filtration, and dry in vacuo to obtain the product.

[0075] Figure 2 to Figure 9 In order to characterize the electrochemical performance of the prepared active material, the diffusion coefficient of the prepared quaternary ammonium salt type anthraquinone active material on the graphite felt electrode is 3.94×10 -6 cm 2 / s, the charge tra...

Embodiment 2

[0084] Preparation of anthraquinone type active substances:

[0085] 1,8-dihydroxyanthraquinone and Br-(CH 2 ) 2 N + (CH 3 ) 3 Br - , and potassium carbonate and potassium iodide were stirred and dissolved in N,N-dimethylformamide (DMF) in a certain proportion. Where reactant Br-(CH 2 ) 2 N + (CH 3 ) 3 The molar ratio of Br: potassium carbonate: potassium iodide: DMF is 1:3:6:0.02:60.

[0086] React at 160°C for 20 hours, cool to room temperature after completion, and filter with suction. After suction filtration, add excess tetrabutylammonium chloride to the filtrate, perform suction filtration, and dry in vacuo to obtain the product.

[0087] Battery performance test:

[0088] The underground depth is 900m, and the physical volume is 150,000m 3 , with a height of 120m, a maximum diameter of 80m, and two salt caverns with a geothermal temperature of 37°C are used as storage tanks for the yin and yang electrolytes. The inner diameter of the casing is 30cm and the ...

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Abstract

The invention discloses application of a quaternary ammonium salt type anthraquinone active substance and an organic water-phase salt cavern battery. The quaternary ammonium salt type anthraquinone active substance is used as a negative electrode active substance to be applied to the salt-cavern battery, the solubility of anthraquinone in a neutral sodium chloride solution can be improved by introducing a quaternary ammonium salt group, so that the energy density of the battery is improved, and meanwhile, the substance also has relatively good stability and does not need to be charged and discharged under the protection of an inert gas environment.

Description

technical field [0001] The invention belongs to the technical field of liquid flow batteries, and in particular relates to the application of a quaternary ammonium salt-type anthraquinone active material and an organic water-phase salt cave battery with the quaternary ammonium salt-type anthraquinone active material. Background technique [0002] With the rapid development of the economy, the accompanying environmental and energy shortage problems are becoming more and more serious, and some clean energy sources such as wind energy, solar energy, and tidal energy are being vigorously developed. However, due to the discontinuity and instability of these renewable energy sources, their utilization is severely restricted and their utilization rates are low. Therefore, it is necessary to vigorously develop energy storage technology to provide guarantee for the stability of the power grid. Among various energy storage technologies, flow battery energy storage technology is the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/18C07C213/06C07C217/22
CPCH01M8/188C07C213/06H01M2250/10H01M2300/0002H01M2300/0091C07C217/22Y02E60/50H01M8/1009Y02E60/10
Inventor 陈留平李丹王慧赵宇祝英忠徐俊辉马旭强
Owner CHINASALT JINTAN
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