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Organic polymer flow battery system

A technology of flow battery and flow battery stack, applied in fuel cells, regenerative fuel cells, circuits, etc., can solve the problems of poor stability, low energy efficiency, environmental pollution, etc., and achieve stable charging and discharging performance and high energy density. , the effect of high safety performance

Active Publication Date: 2020-08-21
CHINASALT JINTAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Polymers have good stability and diverse designs. In order to solve the problems of poor stability, low energy efficiency, and environmental pollution of traditional flow batteries, they have been widely studied as active materials for flow batteries in recent years. The polymer with excellent electrochemical activity is designed and introduced as a redox couple to obtain an organic polymer redox flow battery with outstanding advantages such as strong stability, good safety, flexible configuration, fast response speed, and environmental protection. The application of large-scale electrochemical energy storage technology provides strong support

Method used

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  • Organic polymer flow battery system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] Preparation of Poly(TEMPO-co-VIMS) Copolymers by One-Pot Method

[0097] First, add 4.53 mL of light yellow liquid 1-vinylimidazole (VIM, 0.05 mol), 5.27 mL of light yellow liquid 1,3-propane sultone (0.06 mol) and 50 mL of acetonitrile solvent into the three-necked flask, in N 2 Stirring reaction at 75°C under atmosphere for 1 hour gradually produced white precipitate, and continued reaction for 4 hours until complete reaction. The resulting reaction solution was suction-filtered, washed three times, and finally dried in vacuum to obtain 9.6975 g of white powdery solid particles (named VIMS, yield 89.8%). The reaction principle is shown in the chemical reaction formula (1).

[0098] Then, add 0.9014g white solid 2-methyl-2-propenoic acid-2,2,6,6-tetramethyl-4-piperidine methyl ester (TEMPMA, 8mmol) in the three-necked flask, add a certain amount of white Solid VIMS (4 or 8mmol, 0.8560 / 1.7300g), then add 50mL deionized water, N 2 Under atmosphere, heat and stir at 7...

Embodiment 2

[0100] Preparation of Poly(CVBD) Copolymers by One-Pot Method

[0101] First, VBD (5mmol, 1.5380g) was added into a two-necked flask, light yellow liquid 3-chloro-2-hydroxypropyltrimethylammonium oxide (6mmol, 1500uL) was added, 50mL ethanol solvent was added, and the 2 After condensing and reacting at 95°C for 48 hours under atmosphere, the condensing and reflux was stopped to completely evaporate the methanol solvent to obtain an orange-red off-white solid, which was washed three times with acetonitrile, suction filtered, and vacuum-dried to finally obtain an orange-red solid 1.1378g 3-((4 -Vinylbenzyl)-[4,4'-bipyridyl]-1,1'-diumyl)propane-1-sulfonic acid chloride (CVBD), weighed in 46% yield. The reaction principle is shown in the chemical reaction formula (3).

[0102] Then, add CVBD monomer (4mmol, 1.9800g) and 50mL deionized water solvent into the two-necked flask, and keep filling with N at 70°C 2 Atmosphere for 30min, then inject 1ml of APS initiator (50mg) aqueous s...

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Abstract

The invention discloses an organic polymer flow battery system. The system comprises two electrolyte reservoirs distributed separately and a flow battery stack; an electrolyte is stored in a dissolving cavity of each electrolyte storage tank; the electrolyte in one electrolyte storage tank includes a positive electrode active substance; the positive electrode active substance is a TEMPO functionalized organic polymer; the electrolyte in the other electrolyte storage tank has a negative active substance, the negative active substance is a viologen functionalized organic polymer, and the positive active substance and the negative active substance are directly dissolved or dispersed in a system taking water as a solvent in a body form and are respectively stored in the corresponding electrolyte storage tanks; and the flow battery stack is communicated with the electrolyte storage tanks, and the electrolyte is input into or output from the electrolyte storage tank for oxidation-reduction reaction. The organic polymer flow battery system is suitable for a battery environment utilizing in-situ generated electrolyte, and has the advantages of low cost, stable charging and discharging performance, high active material solubility and the like.

Description

technical field [0001] The invention belongs to the technical field of flow batteries, and in particular relates to an organic polymer flow battery system. Background technique [0002] Energy is an important material basis for human survival and development, and a strategic resource related to the national economy and people's livelihood. With the continuous development of society, energy problems and environmental problems are becoming more and more serious, and the development of new energy has become a research hotspot. [0003] Due to its separate design of energy and power, high safety and long cycle life, flow batteries have become one of the most promising technologies in large-scale energy storage technologies. The use of chemical power sources for electricity storage is not limited by geographical conditions, and it is easy to realize large-scale energy storage, which has great social and economic value. Although traditional flow batteries using inorganic substan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/18C08F220/34C08F226/06
CPCC08F220/34C08F226/06H01M8/188H01M2300/0002Y02E60/50
Inventor 武奕徐俊辉陈留平崔耀星苏志俊李丹朱足妹杜滨阳聂晶晶
Owner CHINASALT JINTAN
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