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Redox flow battery system based on amino-anthraquinone derivative

An aminoanthraquinone, flow battery technology, applied in the direction of regenerative fuel cells, fuel cells, fuel cell additives, etc., can solve the problems of limited solubility of active materials, prone to water electrolysis side reactions, and prone to cross-contamination of electrolytes, etc. Achieve the effect of low cost, high safety performance and high solubility

Inactive Publication Date: 2019-11-12
CHINASALT JINTAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, aqueous organic flow batteries still face some challenges, such as limited solubility of active materials (organic substances), easy cross-contamination of electrolytes, low operating current density, and prone to water electrolysis side reactions, etc.

Method used

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  • Redox flow battery system based on amino-anthraquinone derivative
  • Redox flow battery system based on amino-anthraquinone derivative
  • Redox flow battery system based on amino-anthraquinone derivative

Examples

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preparation example Construction

[0060] It should be noted that the novel anthraquinone derivatives containing carboxyl groups include the following synthetic methods and mainly include the following steps:

[0061] Step 1: Acid Chlorination of Dibasic Acids Containing Carboxyl Terminals

[0062] Put the carboxyl-terminated dibasic acid and thionyl chloride into the reactor, then add toluene as the reaction solvent, add an appropriate amount of catalyst for catalysis, heat up to 60°C for reaction, and distill off the solvent and chlorination after the reaction is over. Sulfoxide was added to toluene for distillation (20mL×2), and the residue was used for further reaction. The reaction process is as follows:

[0063]

[0064] The second step: the synthesis of aminoanthraquinone containing carboxyl group

[0065]Mix the product obtained in the first step with aminoanthraquinone and put it into the reactor, then add toluene as the reaction solvent, heat up to reflux reaction, and distill off the solvent und...

Embodiment 1

[0089] Synthesis of 1-[N-(6-carboxypentyl)]aminoanthraquinone

[0090] 2.92g of adipic acid (0.02mol) and 15mL of thionyl chloride were mixed and dissolved in 35mL of toluene, and 0.01g of DMF was added as a catalyst. The temperature was raised to 60°C and the reaction was refluxed, and the reaction was stopped when the solvent was light yellow (12h-24h). Thionyl chloride and toluene were distilled off under reduced pressure, and toluene was added for distillation (20 mL×2), and the residue was used for the following reaction.

[0091] Add 40 mL of toluene and 0.89 g of 1-aminoanthraquinone to the above residue in sequence, and slowly raise the temperature to reflux. As the reaction progressed, the reaction solution gradually changed from red to orange-yellow. The progress of the reaction was monitored by TLC and the reaction was stopped when the reaction was almost complete (15h-20h). The solvent toluene was distilled off under reduced pressure (to be completely steamed as...

Embodiment 2

[0093] Synthesis of 1-[N-(8-carboxyheptyl)]aminoanthraquinone

[0094] 3.48g of suberic acid (0.02mol) and 15mL of thionyl chloride were mixed and dissolved in 35mL of toluene, and 0.01g of pyridine was added as a catalyst. The temperature was raised to 60°C and the reaction was refluxed, and the reaction was stopped when the solvent was light yellow (12h-24h). Thionyl chloride and toluene were distilled off under reduced pressure, and toluene was added for distillation (20 mL×2), and the residue was used for the following reaction.

[0095] Add 40 mL of toluene and 0.89 g of 1-aminoanthraquinone to the above residue in sequence, and slowly raise the temperature to reflux. As the reaction progressed, the reaction solution gradually changed from red to orange-yellow. The progress of the reaction was monitored by TLC and the reaction was stopped when the reaction was almost complete (15h-20h). The solvent toluene was distilled off under reduced pressure (to be steamed out com...

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Abstract

The invention provides a redox flow battery (RFB) system based on an amino-anthraquinone derivative. The RFB system comprises two electrolyte reservoirs spaced apart from each other, wherein an electrolyte is stored in a tank or a solution chamber and includes a positive electrode active material, a negative electrode active material and a supporting electrolyte, the positive electrode active material is a 2,2,6,6-tetramethylpiperidine oxynitride (TEMPO) compound, the negative electrode active material is an anthraquinone derivative containing a carboxyl group, the positive electrode active material and the negative electrode active material are directly dissolved or dispersed in a bulk form in a system using water as a solvent and are stored in two salt caverns respectively, and the supporting electrolyte is dissolved in the system; and a RFB stack communicating with the two electrolyte reservoirs. The RFB system based on the amino-anthraquinone derivative according to the embodimentof the present invention has the advantages of low cost, high safety performance, stable charge-discharge performance, and high active material solubility.

Description

technical field [0001] The invention relates to the field of flow batteries, in particular to a flow battery system based on aminoanthraquinone derivatives. Background technique [0002] With the rapid development of the human economy, the problems of environmental pollution and energy shortage are becoming more and more serious, which has prompted countries all over the world to extensively develop and utilize renewable energy such as wind energy, solar energy, and tidal energy. However, these renewable energy sources are discontinuous, unstable, restricted by regional environment, and difficult to connect to the grid, resulting in low utilization rate, high wind and light abandonment rate, and waste of resources. Therefore, it is necessary to vigorously develop efficient, cheap, safe and reliable energy storage technology that can be used in conjunction with it. [0003] Among various electrochemical energy storage strategies, compared with static batteries such as lithiu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04276H01M8/083H01M8/18H01M8/2455
CPCH01M8/04276H01M8/083H01M8/188H01M8/2455H01M2300/0091Y02E60/50
Inventor 陈留平徐俊辉韩俊甜武奕苏志俊崔耀星李丹
Owner CHINASALT JINTAN
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