A gas diffusion layer for proton exchange membrane fuel cell and its processing technology
A technology of gas diffusion layer and proton exchange membrane, which is used in fuel cell parts, fuel cells, electrical components, etc., can solve problems such as battery performance reduction and resistance increase, and achieve improved performance, optimized drainage performance, and optimized water management. Effect
Active Publication Date: 2022-06-21
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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[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.
[0031] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.
[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", The orientation or positional relationship indicated by "radial", "vertical", "horizontal", "inner...
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Abstract
The invention provides a gas diffusion layer for a proton exchange membrane fuel cell and its processing technology. The surface of the gas diffusion layer close to the bipolar plate is distributed with a gradient wavy micro-groove structure, and the wavy The microgroove structure is located between the inlet section of the gas diffusion layer and the outlet section of the gas diffusion layer. The gradient wavy micro-groove structure is that the amplitude and wavelength of the wavy micro-groove structure increase synchronously along the gas flow direction. The gradient-distributed grooves of the present invention can realize drainage capacity corresponding to different strengths with different water contents, and ensure the consistency of water distribution along the direction of gas flow.
Description
technical field [0001] The present invention relates to the technical field of fuel cells, in particular to a gas diffusion layer used in a proton exchange membrane fuel cell and its processing technology. Background technique [0002] Fossil energy crisis and environmental pollution have restricted 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 do not produce pollution during operation, which can alleviate the environmental and energy problems brought about by the development of the automobile industry. A proton exchange membrane fuel cell (PEMFC) is a type of fuel cell that uses ...
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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