Proton exchange membrane fuel cell interdigited parallel combined flow field

A proton exchange membrane and fuel cell technology, applied in fuel cells, fuel cell parts, battery electrodes, etc., can solve the problems of increasing the diffusion resistance of reaction gas and reducing the concentration of reaction gas, and achieve low flow resistance and high-efficiency operation Effect

Inactive Publication Date: 2007-04-18
SHANGHAI JIAO TONG UNIV
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  • Abstract
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Problems solved by technology

However, the addition of water vapor reduces the concentration of the reaction gas and increases the diffusion resistance of the reaction gas.

Method used

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  • Proton exchange membrane fuel cell interdigited parallel combined flow field
  • Proton exchange membrane fuel cell interdigited parallel combined flow field
  • Proton exchange membrane fuel cell interdigited parallel combined flow field

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Embodiment Construction

[0018] In order to better understand the technical solution of the present invention, further description will be made below in conjunction with the accompanying drawings.

[0019] The interdigitated-parallel combined flow field structure of the proton exchange membrane fuel cell provided by the present invention is shown in FIG. 3 . In Fig. 3, 12 is a cathode gas diffusion layer, 13 is a cathode catalytic layer, 14 is a proton exchange membrane, 15 is an anode catalytic layer, and 16 is an anode gas diffusion layer. The so-called combined flow field is to select different forms of flow field according to the working characteristics of the cathode / anode of the fuel cell. The fuel cell cathode of the present invention adopts an interdigitated flow field 10, and the anode adopts a parallel flow field 11. The cathode interdigitated flow field 10 is above the fuel cell cathode gas diffusion layer 12, and the anode parallel flow field 11 is above the fuel cell anode gas diffusion l...

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Abstract

The invention relates to a proton exchange membrane fuel cell alternative-parallel combined flow field, where cathode adopts an alternative flow field with gradual expanded gas inlet channel/gradual reduced gas outlet channel, and anode adopts a parallel flow field, in the alternative flow field of the cathode, the gradual expanded cathode gas inlet channel and gradual reduced cathode gas outlet channel are arranged in parallel and alternatively, and parallel anode gas channels are between anode gas inlet and outlet. And the alternative flow field of the cathode is convenient to discharging liquid water produced by electrochemical reaction, the parallel flow field of the anode is convenient to gas transportation, and able to reduce flowing resistance to gas working medium inside the anode's flow field, and the difference between cathode and anode gas working media is convenient for part of resultant water to diffuse from cathode to anode so as to automatically humidify the proton exchange membrane.

Description

technical field [0001] The invention relates to an interdigitated-parallel combined flow field of a proton exchange membrane fuel cell, is a novel gas flow field of a proton exchange membrane fuel cell, and belongs to the technical field of energy utilization fuel cells. Background technique [0002] With the increasing shortage of energy and the gradual deterioration of the environment, countries all over the world are researching and developing new power generation technologies. The fuel cell directly converts the chemical energy of the fuel into electrical energy through an electrochemical reaction without being limited by the Carnot cycle, and is highly efficient and environmentally friendly. Proton exchange membrane fuel cells have the advantages of environmental friendliness, long life, low operating temperature, high specific power, high energy efficiency, fast cold start, compact structure, light weight, easy maintenance, etc., and use non-toxic solid electrolyte mem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M4/86H01M8/0258
CPCY02E60/50
Inventor 秦明俊任庚坡于立军姜秀民孙恺刘建国
Owner SHANGHAI JIAO TONG UNIV
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