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Pyrrolidine/alkoxy free radical compound aqueous organic flow battery

A nitrogen-oxygen radical, flow battery technology, used in fuel cells, battery electrodes, regenerative fuel cells, etc., to achieve the effect of increasing redox potential

Active Publication Date: 2020-09-04
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, limited by the six-membered heterocyclic structure of TEMPO itself, the increase in the redox potential brought about by the replacement of substituents is limited.

Method used

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  • Pyrrolidine/alkoxy free radical compound aqueous organic flow battery
  • Pyrrolidine/alkoxy free radical compound aqueous organic flow battery
  • Pyrrolidine/alkoxy free radical compound aqueous organic flow battery

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A kind of pyrroline nitrogen oxide free radical compound water-based organic flow battery, using 4-formamido-2,2,5,5-tetramethylpyrroline nitrogen oxygen free radical as the positive organic active material; The derivative BTMAP-Vi is used as the negative electrode active material; the copper plate is used as the current collector; the electrolyte is a neutral potassium phosphate solution; Carbon paper is used as the reaction electrode, and the positive and negative reaction electrodes are separated by an anion exchange membrane.

[0023] The electrochemical performance test of its positive electrode active material was carried out.

[0024] Weigh 4-formamido-2,2,5,5-tetramethylpyrroline nitroxide radical and dissolve it in 30 ml of 1mol / L potassium chloride solution, vibrate and stir to make 0.001mol / L 4- Formamido-2,2,5,5-tetramethylpyrroline nitroxide free radical solution.

[0025] refer to figure 1 As shown in (b), the free radical solution prepared above was su...

Embodiment 2

[0029] A kind of pyrrolidine nitroxide free radical compound water-based organic liquid flow battery, using 4-formamido-2,2,5,5-tetramethylpyrrolidine nitroxide radical as the positive organic active material, viologen The derivative BTMAP-Vi is used as the negative electrode active material; the copper plate is used as the current collector, the electrolyte is a neutral potassium chloride solution, two graphite plates with serpentine flow channels are used as the flow field plates of the positive and negative electrodes, and graphite felt is used as the flow field plate. The reaction electrodes are separated by an anion exchange membrane between the positive and negative reaction electrodes.

[0030] The electrochemical performance test of its positive electrode active material was carried out.

[0031] Weigh 4-formamido-2,2,5,5-tetramethylpyrrolidine nitrogen oxide free radical and dissolve in 30 ml of 1mol / L potassium chloride solution, vibrate and stir to make 0.001mol / L 4...

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Abstract

The invention discloses a pyrroline / alkoxy free radical compound aqueous organic flow battery. A copper plate is used as a current collector; an electrolyte is a neutral water salt solution; two graphite plates with serpentine runners are used as flow field plates of positive electrode liquid and negative electrode liquid; graphite felt or carbon paper is used as a reaction electrode, a positive reaction electrode and a negative reaction electrode are separated by an anion exchange membrane, and reduced pyrroline / alkoxynitride free radicals and derivatives thereof are used as positive organicactive substances; one of viologen and derivatives thereof or zinc is used as a negative electrode active substance; according to the invention, pyrroline / alkoxy free radical active substances are adopted to show good oxidation-reduction reversibility and rapid reaction kinetics characteristics in a neutral aqueous solution, the battery performance, activity and safety are high when the battery isused in cooperation with a proper negative electrode, the battery can be widely applied with increasingly improved requirements for efficient and safe storage of wind energy and solar energy.

Description

technical field [0001] The invention belongs to the technical field of renewable energy storage, and in particular relates to a pyrroline / alkyl nitrogen oxide free radical compound water-based organic liquid flow battery. Background technique: [0002] With the increasing consumption of traditional fossil fuels such as oil and coal, the increasingly severe energy crisis has gradually attracted people's attention. In addition, the emission of sulfur compounds, nitrogen oxides and greenhouse gases from fossil fuel combustion will cause many problems, such as environmental degradation and global warming. Replacing traditional fossil energy with renewable energy is considered as one of the solutions to these problems. Among the known renewable energy sources, wind energy and solar energy have bright prospects due to their abundant reserves, good availability and availability. To overcome the grid instability caused by the inherent intermittency of wind and solar energy, and to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90H01M8/18
CPCH01M4/9008H01M8/188Y02E60/50
Inventor 宋江选胡博范豪李宏斌
Owner XI AN JIAOTONG UNIV
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