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Flow battery making electrolyte cross porous electrode

A porous electrode and liquid flow battery technology, applied in hybrid batteries, regenerative fuel cells, circuits, etc., can solve problems such as slow diffusion, difficult electrode materials to function, and reduce the use effect of porous three-dimensional electrodes, so as to increase the interface area , Promote the electrochemical redox reaction speed, improve conversion and storage efficiency

Inactive Publication Date: 2006-10-11
TSINGHUA UNIV
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Problems solved by technology

Since the active substances in the electrolyte diffuse slowly inside the porous electrode, only the electrode material near the surface layer provides the redox electrochemical reaction interface, and the electrode material in the deep layer is difficult to play a role, reducing the actual use effect of the porous three-dimensional electrode.

Method used

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  • Flow battery making electrolyte cross porous electrode

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Embodiment Construction

[0045] The structure of the flow battery of the present invention is described in detail below:

[0046] The all-vanadium redox flow battery is composed of several groups of single cells connected in series, and each single cell is composed of a positive half-cell and a negative half-cell. The positive or negative half-cells are composed of the following components: ion exchange membrane, membrane side turbulence plate, membrane side deflector, collector plate, electrode liner, electrode, diversion feed plate and feed separator.

[0047] figure 2 Shown is the anolyte flow through the positive half-cell process. The anolyte flows sequentially through the feed partition, the diversion dark groove of the diversion feed plate, after entering the diversion feed plate, it is evenly distributed to different parts of the surface of the porous electrode, and passes through the porous electrode in the center of the electrode liner and the current collector. The screen in the center o...

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Abstract

The related stack structure for fluid cell comprises: arranging spaced comb grooves crossed the thickness orientation of guide plate to allow electrolyte cross directly the porous electrode on substrate for full contact of the active material in electrolyte and the cubic electrode. This invention can improve speed of electrochemical redox reaction, increases current density, and simplifies cell structure with low cost.

Description

technical field [0001] The invention relates to the technical field of electric energy conversion and storage, in particular to a technical method for manufacturing a liquid flow battery. Background technique [0002] Using renewable energy such as wind energy and solar energy to generate electricity is one of the important ways for human beings to obtain energy from nature in the future. Since the power generation of wind energy and solar energy varies significantly with day and night, it is difficult to maintain a stable power output. It needs to cooperate with a certain scale of power storage devices to form a complete power supply system to ensure continuous and stable power supply. Therefore, the development of energy storage systems with high power conversion efficiency, large storage capacity, and good economic performance has become the key to the development of renewable and clean energy. Among various forms of energy storage devices, such as water storage energy s...

Claims

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Application Information

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IPC IPC(8): H01M8/18H01M12/00
CPCY02E60/50
Inventor 王保国朱顺泉尹海涛陈金庆汪钱
Owner TSINGHUA UNIV
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