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Pteridine aqueous organic redox flow battery

A flow battery, pteridine technology, applied in fuel cells, regenerative fuel cells, circuits, etc., can solve the problem of high cost of flow batteries, and achieve the effect of cheap source of elements, excellent kinetic performance, and rich source of elements

Active Publication Date: 2019-09-20
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] A pteridine-based water-based organic redox flow battery provided by the present invention solves the high cost of existing flow batteries, and at the same time, pteridine-based active materials have not been used to assemble high-voltage water-based organic flow batteries in the prior art Battery

Method used

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  • Pteridine aqueous organic redox flow battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Weigh folic acid and dissolve it in 30 milliliters of 1mol / L potassium hydroxide solution, vibrate and stir, and prepare a 0.001mol / L folic acid solution after it forms a uniform solution. The electrolyte solution prepared above was subjected to a cyclic voltammetry test with a three-electrode system, wherein silver / silver chloride was used as a reference electrode, a platinum electrode was used as a counter electrode, and a glassy carbon electrode was used as a working electrode. Sweep speed is 25mV / s, 50mV / s, 80mV / s and 100mV / s.

[0050] Depend on figure 1 The middle CV data can be obtained. Under alkaline conditions, there is a pair of obvious reversible redox peaks, and its electrochemical reversibility is good. When silver / silver chloride is used as a reference electrode, the average potential of folic acid is below -1V, as The negative electrode material exhibits a relatively negative potential.

[0051] exist figure 2 In the linear fitting of the redox peak p...

Embodiment 2

[0053] Weigh anhydrous theophylline and dissolve it in 30 milliliters of 1 mol / L potassium hydroxide solution, vibrate and stir, and prepare a 0.001 mol / L folic acid solution after it forms a uniform solution. The electrolyte solution prepared above was subjected to a cyclic voltammetry test with a three-electrode system, wherein silver / silver chloride was used as a reference electrode, a platinum electrode was used as a counter electrode, and a glassy carbon electrode was used as a working electrode. Sweep speed is 25mV / s, 50mV / s, 80mV / s and 100mV / s.

[0054] Depend on image 3 The middle CV data can be obtained. Under alkaline conditions, there is a pair of obvious reversible redox peaks, and its electrochemical reversibility is good. When silver / silver chloride is used as a reference electrode, the average potential of folic acid is below -1V, as The negative electrode material exhibits a relatively negative potential.

[0055] exist Figure 4 In the linear fitting of th...

Embodiment 3

[0057] Weigh pteroic acid and dissolve it in 30 ml of 1 mol / L potassium hydroxide solution, oscillate and stir, and prepare a 0.001 mol / L folic acid solution after it forms a uniform solution. The electrolyte solution prepared above was subjected to a cyclic voltammetry test with a three-electrode system, wherein silver / silver chloride was used as a reference electrode, a platinum electrode was used as a counter electrode, and a glassy carbon electrode was used as a working electrode. Sweep speed is 25mV / s, 50mV / s, 80mV / s and 100mV / s.

[0058] Depend on Figure 5 The middle CV data can be obtained. Under alkaline conditions, there is a pair of obvious reversible redox peaks, and its electrochemical reversibility is good. When silver / silver chloride is used as a reference electrode, the average potential of folic acid is below -1V, as The negative electrode material exhibits a relatively negative potential.

[0059] exist Image 6 In the linear fitting of the redox peak pote...

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Abstract

The invention discloses a pteridine aqueous organic redox flow battery. According to the pteridine aqueous organic redox flow battery, organic molecules containing a pteridine structure is taken as a negative electrode; potassium ferrocyanide, TEMPO or benzoquinone potassium sulfonate is taken as a positive electrode; one or a mixture of more of an acid solution, an alkali solution and a salt water solution is taken as an electrolyte; a perfluorosulfonic acid-polytetrafluoroethylene copolymer membrane is taken as an ion exchange diaphragm; two copper plates serve as a current collector of the battery; a graphite plate with a flow channel is used as a flow field plate of the positive electrode and the negative electrode; a carbon paper, graphite felt or a metal electrode serves as an electrode of the battery; and the pteridine aqueous organic redox flow battery has the advantages of power energy design flexibility, low cost, large-scale assembly and application and the like, and is very suitable for large-scale energy storage application.

Description

Technical field [0001] The invention belongs to the field of large-scale energy storage, and particularly relates to a pteridine-based aqueous organic redox flow battery. Background technique [0002] Since the first industrial revolution, the consumption of fossil energy such as oil, coal and other non-renewable resources has increased year by year, which has brought about an increasingly severe energy crisis. At the same time, the sulfides, nitrogen oxides and greenhouse gases contained in them have brought harm to the earth. Environmental damage and the greenhouse effect have become crises that people have to face. The utilization and collection of clean renewable resources such as wind, tidal and solar energy are seen as a solution to this problem. However, the intermittency and spatiotemporal uncertainty of these energy sources as well as the huge fluctuations in current peaks and valleys have a negative impact on the grid. The impact has hindered the further developme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/18
CPCH01M8/188Y02E60/50
Inventor 宋江选雷佳锋范豪李宏斌
Owner XI AN JIAOTONG UNIV
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