Redox flow battery

A technology of liquid flow battery and battery unit, which is applied in the direction of fuel cells, battery electrodes, regenerative fuel cells, etc., can solve problems such as pressure rise, and achieve the effect of suppressing pressure rise and high reliability

Inactive Publication Date: 2020-07-17
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the generated hydrogen gas stays in the circulation system constituting the battery, problems such as pressure rise in the circulation system will occur

Method used

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  • Redox flow battery

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Embodiment Construction

[0019] A specific embodiment (hereinafter referred to as "this embodiment") will be described in detail with reference to the drawings. In addition, this invention is not limited to the following embodiment, Various changes are possible in the range which does not change the summary of this invention.

[0020] figure 1 It is a configuration diagram schematically showing an example of a redox flow battery according to the present embodiment. Such as figure 1 As shown, the redox flow battery 1 according to this embodiment has a battery cell 10 including a positive electrode 11 , a negative electrode 12 , and an ion exchange membrane 13 separating the positive electrode 11 and the negative electrode 12 . In addition, the redox flow battery 1 has a positive electrode side electrolyte tank 20, a negative electrode side electrolyte tank 30, a positive electrode side piping, and a negative electrode side piping. The electrolytic solution of the substance, the negative electrode si...

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Abstract

The present invention provides a redox flow battery capable of preventing pressure increase caused by hydrogen gas generation at a negative electrode within a battery system. This redox flow battery (1) has: a battery cell (10) equipped with a positive electrode (11), a negative electrode (12), and an ion-exchange membrane (13); a positive electrode-side electrolytic solution tank (20) for housingan electrolytic solution containing a positive electrode active material appropriate for the positive electrode (11); a negative electrode-side electrolytic solution tank (30) for housing an electrolytic solution containing a negative electrode active material appropriate for the negative electrode (12); a positive electrode-side piping for connecting the battery cell (10) and the positive electrode-side electrolytic solution tank (20); and a negative electrode-side piping for connecting the battery cell (10) and the negative electrode-side electrolytic solution tank (30), wherein charging and discharging are performed by having a configuration causing the electrolytic solutions to circulate between the battery cell (10 )and the positive and negative electrode-side electrolytic solution tanks (20, 30) via the positive electrode-side piping (21, 22) and the negative electrode-side piping (31, 32). The negative electrode-side piping (31, 32) has a hydrogen oxidation catalyst (40 provided to at least a portion of an inner surface side thereof.

Description

technical field [0001] The present invention relates to redox flow batteries. Background technique [0002] Redox flow batteries are known as high-capacity batteries. A redox flow battery generally has an ion exchange membrane for separating an electrolyte, and electrodes disposed on both sides of the ion exchange membrane. In addition, charge and discharge can be performed by simultaneously performing an oxidation reaction on one electrode and a reduction reaction on the other electrode using an electrolyte solution containing metal ions, which are active materials whose valence changes by redox. . [0003] In the state of high charge depth of the redox flow battery, hydrogen ions (H + ) accepts electrons (e - ) reaction to produce hydrogen gas (H 2 )Propensity. If the generated hydrogen gas stays in the circulation system constituting the battery, problems such as pressure rise in the circulation system will occur. In addition, management is required so that the hyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/18H01M8/04
CPCY02E60/50H01M8/188H01M8/04186H01M2300/0002H01M4/8663H01M4/90H01M8/04179
Inventor 富田美由纪铃木雅博周婷婷
Owner SHOWA DENKO KK
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