High-durability proton exchange membrane fuel cell membrane electrode structure
A technology of proton exchange membrane and fuel cell membrane, which is applied in the direction of fuel cells, circuits, electrical components, etc., can solve problems such as poor durability and sealing problems, reduce the risk of damage, improve mechanical durability, and better fit sexual effect
Pending Publication Date: 2021-11-19
SUNRISE POWER CO LTD
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Problems solved by technology
[0003] In order to solve the poor durability caused by the stress concentration on the MEA structure and the sealing problem caused by the thickness matching with the stack, a high-durability proton exchange membrane fuel cell membrane electrode structure is provided
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Embodiment 1
[0027] Such as Figure 1-3 As shown, the present invention provides a high-durability proton exchange membrane fuel cell membrane electrode structure, including an anode gas diffusion layer 1, an anode catalyst layer 4, a proton exchange membrane 5, a cathode catalyst layer 6 and a cathode gas diffusion layer arranged in sequence Layer 9, both sides of the proton exchange membrane 5 are provided with a sealing frame, the sealing frame is a double-layer sealing frame, and the double-layer sealing frame includes an inner layer sealing frame and an outer layer sealing frame; the inner layer sealing frame The area of the central hollow area is smaller than the area of the central hollow area of the outer sealing frame; the edges of the anode gas diffusion layer and the cathode gas diffusion layer overlap the inner sealing frame and are sealed with the outer layer The frame has no overlapping portion; the area of the anode catalytic layer 4 and the cathode catalytic layer 6...
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Abstract
The invention relates to a high-durability proton exchange membrane fuel cell membrane electrode structure, which comprises an anode gas diffusion layer, an anode catalysis layer, a proton exchange membrane, a cathode catalysis layer and a cathode gas diffusion layer which are arranged in sequence, wherein sealing frames are arranged on the two sides of a proton exchange membrane, each sealing frame is a double-layer sealing frame, each double-layer sealing frame comprises an inner-layer sealing frame and an outer-layer sealing frame, the area of the central hollow area of the inner-layer sealing frame is smaller than that of the central hollow area of the outer-layer sealing frame, the edges of the anode gas diffusion layer and the cathode gas diffusion layer are in lap joint with the inner-layer sealing frame and have no overlapped part with the outer-layer sealing frame, and the area of the anode catalysis layer and the area of the cathode catalysis layer are smaller than the area of the central hollow area of the inner-layer sealing frame. According to the technical scheme, the problem that the thickness of the MEA is matched with the thickness of the bipolar plate sealing structure in stack assembly is solved, and the structure is more beneficial to improving the durability of the MEA.
Description
technical field [0001] The invention relates to the technical field of fuel cells, in particular to a highly durable proton exchange membrane fuel cell membrane electrode structure. Background technique [0002] The performance of proton exchange membrane fuel cells and the length of durability are two basic indicators for evaluating membrane electrode assemblies (MEA), among which durability is not only related to the selection of key raw materials, but also closely related to the structural design and preparation process of MEA . Considering the structural design of the MEA, it is necessary to reduce the risk of damage to the proton exchange membrane during the production process of the MEA, the assembly process of the stack, and the operation of the stack. produce stress concentrations. Therefore, from the perspective of MEA structural design, it is necessary to reduce the stress concentration here as much as possible during subsequent processing and use. In addition t...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01M8/0273H01M8/0276H01M8/1004
CPCH01M8/1004H01M8/0273H01M8/0276Y02E60/50
Inventor 王倩陈桂银王强梁帮友许亭邢丹敏
Owner SUNRISE POWER CO LTD