Aqueous full-organic flow battery based on indigo derivatives and construction method and application thereof

A liquid flow battery and derivative technology, applied in the direction of regenerative fuel cells, fuel cells, battery electrodes, etc., can solve the problems of low solubility, high price, and few types of inorganic electroactive species, and achieve good biocompatibility and easy degradation , the effect of good electrochemical reversibility

Inactive Publication Date: 2018-04-20
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few types of inorganic electroactive species, and many inorganic element materials, such as vanadium and bromine, are either low in solubility, expensive, or have great environmental hazards.

Method used

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  • Aqueous full-organic flow battery based on indigo derivatives and construction method and application thereof
  • Aqueous full-organic flow battery based on indigo derivatives and construction method and application thereof
  • Aqueous full-organic flow battery based on indigo derivatives and construction method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Weigh 0.47g sodium indigo disulfonate, dissolve it in 50mL ultrapure water, prepare a 0.02mol / L sodium indigo disulfonate aqueous solution, and exchange it with a corresponding concentration of indigo disulfonic acid solution through a hydrogen ion exchange resin column , then add 2mol / L sulfuric acid solution to prepare a mixed solution of 100mL 0.01mol / L indigodisulfonic acid+1.0mol / L sulfuric acid;

[0030] (2) Two gold-plated copper plates were used as cathode and anode current collector plates, two serpentine graphite flow field plates were respectively used as cathode and anode flow field plates, two carbon papers were used as cathode and anode respectively, and one piece of perfluorosulfuron The acid-polytetrafluoroethylene copolymer ion exchange membrane constructs a 7-layer sandwich flow battery structure. Before using carbon paper, use a mixed solution of sulfuric acid and nitric acid for hydrophilic treatment. Perfluorosulfonic acid-polytetrafluoroethyle...

Embodiment 2

[0033] (1) Weigh 0.47g sodium indigo diphosphonate, dissolve it in 50mL ultrapure water, prepare 0.02mol / L sodium indigo diphosphonate aqueous solution, exchange it into sodium indigo diphosphonate of corresponding concentration by hydrogen ion exchange resin column solution, followed by adding 2mol / L sulfuric acid solution to prepare a mixed solution of 100mL 0.01mol / L sodium indigo diphosphonate+1.0mol / L sulfuric acid;

[0034] (2) Two gold-plated copper plates were used as cathode and anode current collector plates, two serpentine graphite flow field plates were respectively used as cathode and anode flow field plates, two carbon papers were used as cathode and anode respectively, and one piece of perfluorosulfuron The acid-polytetrafluoroethylene copolymer ion exchange membrane constructs a 7-layer sandwich flow battery structure. Before using carbon paper, use a mixed solution of sulfuric acid and nitric acid for hydrophilic treatment. Perfluorosulfonic acid-polytetraflu...

Embodiment 3

[0037] (1) Weigh about 0.63g sodium indigo tetrasulfonate, dissolve it in 50mL ultrapure water, prepare 0.02mol / L sodium indigo tetrasulfonate aqueous solution, exchange it into indigo tetrasulfonic acid of corresponding concentration by hydrogen ion exchange resin column solution, followed by adding 2mol / L sulfuric acid solution to prepare a mixed solution of 100mL 0.01mol / L indigo tetrasulfonic acid + 1.0mol / L sulfuric acid;

[0038](2) Two gold-plated copper plates were used as cathode and anode current collector plates, two serpentine graphite flow field plates were respectively used as cathode and anode flow field plates, two carbon papers were used as cathode and anode respectively, and one piece of perfluorosulfuron The acid-polytetrafluoroethylene copolymer ion exchange membrane constructs a 7-layer sandwich flow battery structure. Before using carbon paper, use a mixed solution of sulfuric acid and nitric acid for hydrophilic treatment. Perfluorosulfonic acid-polytet...

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Abstract

The invention belongs to the field of renewable energy sources, and particularly relates to an aqueous full-organic flow battery based on indigo derivatives and a construction method and application thereof. According to the battery, a water-soluble indigo reduced derivative is taken as a negative electrode electroactivity species, a water-soluble indigo oxidized derivative is taken as a positiveelectrode electroactivity species, sulfuric acid is taken as a supporting electrolyte, and a perfluorosulfonic acid-polytetrafluoroethylene copolymer membrane is taken as an ion exchange membrane. Thebattery prepared in the invention, which is an aqueous flow battery with good electrochemical performance, has the advantage that the active electrolyte is adjustable in structure, simple in manufacturing, long in cycle life and high in specific power, the used aqueous electrolyte is low in cost, safe and environmentally-friendly, and the battery has wide application prospects in the fields of large-scale electricity storage of wind energy and photovoltaic power generation and peak regulation of power network.

Description

technical field [0001] The invention belongs to the field of renewable energy, and in particular relates to an indigo derivative-based water-based all-organic liquid flow battery and its assembly method and application. Background technique [0002] Renewable energy sources such as solar energy, wind energy, and geothermal energy have huge reserves, are clean and environmentally friendly, and have broad prospects for utilization. However, the energy density of this type of energy is low, and there are obvious disadvantages such as regionality and intermittency, so it is urgent to develop a high-efficiency energy storage system for it. Among the currently used electrochemical energy storage systems such as supercapacitors, electrochemical secondary batteries, and redox flow batteries, only the power and capacity design of the flow battery is decoupled, that is, the flow battery The energy storage capacity is determined by the size of the electrolyte reservoir (the concentrat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/18H01M4/86H01M8/0202
CPCH01M4/86H01M8/0202H01M8/188H01M2300/0011Y02E60/50
Inventor 曹剑瑜赵亚欣许娟张盼盼冯媛媛
Owner CHANGZHOU UNIV
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