Gas diffusion layer for proton exchange membrane fuel cell and processing technology of gas diffusion layer

A technology of gas diffusion layer and proton exchange membrane, which is applied to fuel cell components, fuel cells, electrical components, etc., can solve the problems of increased resistance and reduced battery performance, and achieve drainage performance optimization, performance improvement, and easy implementation Effect

Active Publication Date: 2021-07-27
JIANGSU UNIV
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Problems solved by technology

Carbon fiber is used to prepare the substrate, and the surface is provided with a water-repellent layer, which leads to an increase in resistance and IR loss during operation, resulting in a decrease in battery performance

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  • Gas diffusion layer for proton exchange membrane fuel cell and processing technology of gas diffusion layer
  • Gas diffusion layer for proton exchange membrane fuel cell and processing technology of gas diffusion layer
  • Gas diffusion layer for proton exchange membrane fuel cell and processing technology of gas diffusion layer

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0032] In describing the present invention, it is to be understood that the terms "central", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "axial", The orientation or positional relationship indicated by "radial", "vertical", "horizontal", "inner", "outer", etc. is based on the ...

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Abstract

The invention provides a gas diffusion layer for a proton exchange membrane fuel cell and a processing technology of gas diffusion layer, gradient wavy micro-groove structures are distributed on the surface of one side of the gas diffusion layer close to a bipolar plate, and the wavy micro-groove structures are located between an inlet section of the gas diffusion layer and an outlet section of the gas diffusion layer. The gradient wavy micro-groove structures are characterized in that the amplitude and the wavelength of the wavy micro-groove structures are increased in a synchronous gradient manner along the gas flowing direction. The grooves distributed according to the gradient can achieve the effect that different water contents correspond to drainage capacities of different strengths, and the consistency of water distribution in the gas flowing direction is guaranteed.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a gas diffusion layer for a proton exchange membrane fuel cell and its processing technology. Background technique [0002] The fossil energy crisis and environmental pollution restrict the sustainable development of human society. All countries are committed to the development of clean and efficient energy. A fuel cell is an electrochemical reaction power device that can directly convert the chemical energy of fuel into electrical energy. It has the advantages of low working temperature and fast start-up, and is suitable as a power source for green new energy vehicles. Fuel cells have high energy conversion efficiency and no pollution during work, which can alleviate environmental and energy problems caused by the development of the automobile industry. A proton exchange membrane fuel cell (PEMFC) is a type of fuel cell that uses a proton exchange membrane as an electrolyt...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0258H01M8/026H01M8/0202H01M8/04225
CPCH01M8/0258H01M8/026H01M8/0202H01M8/04225Y02E60/50
Inventor 董非杨双宇尹必峰许晟陈鑫解玄贾和坤
Owner JIANGSU UNIV
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