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Three-dimensional netted graphite foam or netted glassy carbon bipolar plate of all-vanadium redox flow battery

An all-vanadium redox flow battery and graphite foam technology, which is applied to battery electrodes, fuel cells, fuel cell components, etc., can solve problems such as poor electrical conductivity and large contact resistance, and achieve large effective surface area and increased ratio energy effect

Inactive Publication Date: 2014-01-29
QINGDAO ADVANCED GRAPHITE MATERIALS CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] In traditional graphite felt, the flow of vanadium liquid passes through the gaps between felt fibers, so the contact resistance is relatively large, and there is a problem of poor electrical conductivity.

Method used

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  • Three-dimensional netted graphite foam or netted glassy carbon bipolar plate of all-vanadium redox flow battery
  • Three-dimensional netted graphite foam or netted glassy carbon bipolar plate of all-vanadium redox flow battery
  • Three-dimensional netted graphite foam or netted glassy carbon bipolar plate of all-vanadium redox flow battery

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Experimental program
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Embodiment Construction

[0026] figure 1 Medium, three-dimensional networked graphite foam or networked glassy carbon vanadium redox flow battery bipolar plates, including three-dimensional networked graphite foam or networked glassy carbon The three-dimensional network graphite foam or network glassy carbon 1 has an interconnected open-pore structure, and the carbon content is 10%-100%. On one side, both sides or The center is provided with graphite current collector 2 (see figure 2 , image 3 ), the carbon content of graphite current collector 2 is 10-100%.

[0027] The size of the three-dimensional network open-pore graphite foam or the network glassy carbon bubble is 8ppi-2000PPI. Three-dimensional networked graphite foam or networked glassy carbon 1 and graphite current collector 2 are bonded together. The bonding method is high temperature treatment after adhesive or resin bonding, and the processing temperature is 40-3000C.

[0028] Figure 4 Among them, a diversion dam 3 is arranged in...

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Abstract

The invention discloses a three-dimensional netted graphite foam or netted glassy carbon bipolar plate of an all-vanadium redox flow battery, which can improve the active material utilization of battery electrodes by increasing the specific surface area. According to the technical scheme, the bipolar plate comprises three-dimensional netted graphite foam or netted glassy carbon (1), and is characterized in that the three-dimensional netted graphite foam or netted glassy carbon (1) is provided with holes communicated with each other, and the carbon content of the three-dimensional netted graphite foam or netted glassy carbon (1) is 10%-100%; one or more graphite current collectors (2) are arranged on one or two sides or in the middle of the three-dimensional netted graphite foam or netted glassy carbon (1), and the carbon content of the graphite current collector (2) is 10%-100%.

Description

technical field [0001] The invention belongs to the field of bipolar plate devices for vanadium redox flow batteries, in particular to a bipolar plate for a three-dimensional network graphite foam or network glass carbon full vanadium redox flow battery that can increase the specific surface area and thereby improve the utilization rate of active materials of battery electrodes . Background technique [0002] With the development of science and technology, and the multi-form needs of human beings for electric energy, people have more and more needs for different forms of energy storage batteries. Especially when people use renewable energy such as wind energy and solar energy, due to the influence of natural conditions, the power generated by power generation devices (such as wind turbines, solar panels, etc.) fluctuates and is extremely unstable. into the grid. Research institutions in various countries are also developing different forms of energy storage methods. Large-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M4/96H01M8/0234
CPCY02E60/50H01M4/8605H01M4/96H01M8/0234
Inventor 郭建明杨艳文郭建军
Owner QINGDAO ADVANCED GRAPHITE MATERIALS CO LTD
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