Proton exchange membrane and fuel cell membrane electrode spraying fixture and preparation method thereof

Abstract

The invention relates to a proton exchange membrane and fuel cell membrane electrode spraying fixture and a preparation method thereof. The fixture is composed of two sets of two-way clamping devicesand a vacuum adsorption heating platform. The two-way clamping devices provided with magnets and rubber pads are utilized to replace a fixing mode of replacing combination of bolts, clamps and variousframes, the structure is simple, assembling is quick, damage to a proton exchange membrane is reduced in the processing process, the work efficiency and quality are improved, and the fixture is suitable for bulk preparation of proton exchange membrane and fuel cell membrane electrodes; the edges of the to-be-sprayed proton exchange membrane are fixed in the four directions of the plane, by adjusting the tension degree of the membrane surface, the situation that the membrane is folded due to external force and the environment when flat laid on a vacuum adsorption heating plate is avoided, meanwhile, the fixture is easy to demount, an install-and-play effect is achieved, the mounting and adjusting time of front side spraying and reverse side spraying is shortened, and the spraying efficiency, spraying quality and product consistency of the membrane electrodes are improved significantly.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a proton exchange membrane fuel cell membrane electrode spraying fixture and a preparation method thereof. Background technique [0002] The membrane electrode assembly (MEA) is the heart of the proton exchange membrane fuel cell, where the oxidation-reduction reaction takes place, and the source of the current output. Membrane electrodes are composed of gas diffusion layers on both sides, catalytic layers and proton exchange membranes in the middle. The reduction of oxygen and the oxidation of hydrogen are carried out in the cathode and anode catalyst layers respectively. The proton conduction required in the reaction process is realized by the proton exchange membrane in the middle. , electrons are conducted through an external circuit to generate current. [0003] As the core component of the proton exchange membrane fuel cell, the performance of the membrane e...

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Problems solved by technology

[0006] Chinese patent 202930477U discloses a jig with a non-slip cushion used in the preparation of membrane electrodes, which prevents the shrinkage and offset of the proton exchange membrane during the preparation process through screws and confinement. In the process, it is difficult to ensure that the surface of the proton exchange membrane is smooth, and at the same time, it will be slightly deformed by the influence of air humidity, which will affect the spraying efficiency and spraying effect

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