Porous electrode, liquid flow battery with same, battery stack and battery system

A porous electrode and liquid flow battery technology, applied in fuel cells, battery electrodes, regenerative fuel cells, etc., can solve the problems of large liquid flow pressure difference and uneven electrolyte flow, so as to improve uniformity and reduce liquid flow pressure Poor, the effect of improving voltage efficiency

Active Publication Date: 2015-02-18
DONGFANG ELECTRIC (CHENGDU) HYDROGEN FUEL CELL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a porous electrode and a flow battery containing the same, a flow battery stack and a flow battery system, which are used to solve the problem of large pressure difference and uneven electrolyte flow in the flow battery stack in the prior art The problem

Method used

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  • Porous electrode, liquid flow battery with same, battery stack and battery system
  • Porous electrode, liquid flow battery with same, battery stack and battery system
  • Porous electrode, liquid flow battery with same, battery stack and battery system

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Embodiment Construction

[0041] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the drawings in the embodiments of the present invention. However, the following embodiments and drawings are only used to understand the present invention, and cannot limit the present invention. The present invention can It is implemented in multiple different ways defined and covered by the claims.

[0042] For ease of description, the present invention defines the frame where the liquid inlet and outlet of the liquid flow frame are located as a horizontal frame, and the frame perpendicular to the horizontal frame is defined as a vertical frame. Furthermore, the porous electrode embedded in the liquid flow frame is The direction parallel to the horizontal frame is defined as horizontal, and the direction parallel to the vertical frame is defined as vertical, such as image 3 Shown. However, the horizontal and vertical frames of the present invention ...

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Abstract

The invention discloses a porous electrode, a liquid flow battery with the same, a liquid flow battery stack and a liquid flow battery system. A flow guide channel through which an electrolyte solution flows is formed in the porous electrode, and the flow guide channel penetrates in the thickness direction of the porous electrode. The invention has the advantages that the flow guide channel through which the electrolyte solution flows is formed in the porous electrode, liquid flow resistance of the porous electrode on flowing of the electrolyte solution is reduced under the flow guide action of the flow guide channel on the electrolyte solution, and liquid flow pressure difference which is required by flowing of the electrolyte solution is effectively reduced; and moreover, when flowing in the flow guide channel, the electrolyte solution uniformly permeates through the porous electrodes at two sides of the flow guide channel, the uniformity of flowing of liquid flow is improved, concentration polarization caused by non-uniform flowing of the electrolyte solution is reduced, and the voltage efficiency of the liquid flow battery system is improved.

Description

Technical field [0001] The invention relates to the field of flow batteries, in particular to a porous electrode and a flow battery, a flow battery stack and a flow battery system containing the porous electrode. Background technique [0002] The all-vanadium redox flow battery is an electrochemical reaction device that performs redox with vanadium ion electrolytes of different valences, which can efficiently realize the mutual conversion between chemical energy and electrical energy. This type of battery has the advantages of long service life, high energy conversion efficiency, good safety, and environmental friendliness. It can be used in large-scale energy storage systems supporting wind power and photovoltaic power generation. It is the main choice for grid peak-shaving and valley-filling and load balancing. one. Therefore, in recent years, all-vanadium redox flow batteries have gradually become the focus of research on large-capacity energy storage batteries. [0003] All v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M8/18H01M8/24H01M8/2455
CPCY02E60/528Y02E60/50
Inventor 汤浩殷聪谢光有房红琳胡蕴成
Owner DONGFANG ELECTRIC (CHENGDU) HYDROGEN FUEL CELL TECH CO LTD
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