A method for preventing swelling of a polymer electrolyte membrane electrode

Abstract

The present application belongs to the technical field of fuel cell, and particularly relates to a kind of anti-swelling sealing edge method of polymer electrolyte membrane electrode. The edge of membrane electrode is cut, and two layers of microporous film are used to cover the upper and lower sides of the non-reaction area of membrane electrode respectively; a mold is used to position the membrane electrode, to ensure that the catalytic layer is located at the inner center position of the microporous film closed area, the first layer of microporous film is fixed on the blank edge of polymer electrolyte membrane on one side of the membrane electrode, and then the second layer of microporous film is fixed on the blank edge of polymer electrolyte membrane on the other side of the membrane electrode, and the two layers of microporous film are overlapped symmetrically; finally, the assembly is implanted into two layers of metal sheets, and hot pressing is performed. The microporous film has strong bonding force with the polymer film, good sealing property, simple production process and low cost.

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