An integrated reversible fuel cell membrane electrode cathode side structure

A fuel cell membrane, integrated technology, applied in the direction of fuel cells, battery electrodes, structural parts, etc., can solve the problems of inability to achieve water vapor positioning and transmission, difficult to meet the water vapor management requirements of integrated reversible fuel cells, etc. Effects of water management and mass transfer efficiency, high performance output

Active Publication Date: 2022-03-18
SHANGHAI JIAOTONG UNIV
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Problems solved by technology

However, these schemes cannot realize water vapor positioning transmission, and it is difficult to meet the water vapor management requirements of an integrated reversible fuel cell

Method used

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  • An integrated reversible fuel cell membrane electrode cathode side structure
  • An integrated reversible fuel cell membrane electrode cathode side structure
  • An integrated reversible fuel cell membrane electrode cathode side structure

Examples

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Embodiment 1

[0046] An integrated reversible fuel cell membrane electrode cathode structure with alternating hydrophilic and hydrophobic properties, such as figure 1 , including carbon paper, alternating hydrophilic and hydrophobic hydrophobic support layers 1 and hydrophilic support layers 2, alternate hydrophilic and hydrophobic hydrophobic microporous layers 3 and hydrophilic microporous layers 4, and a composite multifunctional catalytic layer.

[0047] like figure 2 , the gas diffusion support is distributed in the carbon paper by the method of "dipping coating-radiation grafting", and the gas diffusion microporous layer is distributed on one side of the gas diffusion support. The composite functional catalytic layer is sprayed on the gas diffusion microporous layer. Hydrophobic support layer 1 and hydrophobic microporous layer 3 are the main transport channels for oxygen in the two modes of power generation and electrolysis, while hydrophilic support layer 2 and hydrophilic micropo...

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Abstract

The invention relates to a cathode side structure of an integral reversible fuel cell membrane electrode, which is placed on the cathode side of an integrated reversible fuel cell, and includes a gas diffusion layer and a composite functional catalytic layer with alternating hydrophilic and hydrophobic properties; the gas diffusion The layer comprises a gas diffusion support layer with alternating hydrophilic and hydrophobic properties with a pore diameter greater than 25 μm and a gas diffusion microporous layer with alternate hydrophilic and hydrophobic properties with a pore diameter of 0.1-10 μm. Compared with the prior art, the invention has the advantages of separation and positioning transmission of water and gas on the cathode side of the membrane electrode, improves battery water management and mass transfer efficiency, and ensures high-performance output of the reversible fuel cell.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to an integrated reversible fuel cell membrane electrode cathode side structure. Background technique [0002] Energy is the basis for the survival and development of modern society. With the continuous progress of human society, fossil fuels such as coal, oil and natural gas on which human beings depend are gradually being exhausted. At the same time, the consumption of fossil fuels has brought about increasingly serious air pollution and accelerated global warming. Therefore, the development of new energy sources, the improvement of fuel utilization, and the exploration of clean energy technologies to replace petroleum and other fossil fuels have become global issues that must be solved by mankind in this century. As a new type of energy storage battery, the integrated renewable fuel cell URFC (Unitized Regenerative fuel cell) has both power generation and electrolysis functio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C41/12
CPCH01M8/1004H01M4/8657H01M4/8807H01M4/90Y02E60/50
Inventor 张忠豪郭孟迪邱殿凯彭林法易培云来新民
Owner SHANGHAI JIAOTONG UNIV
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