Method for making an improved supported membrane/electrode structure combination wherein catalytically active particles are coated onto the membrane
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United States of America Patent
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Dec 26, 1989
Grant Date -
N/A
app pub date -
Dec 19, 1986
filing date -
Dec 19, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention is a membrane/electrode combination having an electrically conductive screen which has a first and a second face. At least the first face of the screen is substantially flat. The screen has a plurality of openings passing therethrough and connecting the first and the second faces of the screen. The openings occupying up to about 75% of the surface area of each face of the electrically conductive screen. The first face of an ion exchange membrane film, which has a first and a second face, is attached to the first face of the electrically conductive screen, thereby leaving portions of the first face of the membrane film exposed through the openings in the electrically conductive screen. A plurality of catalytically active particles are disposed on the exposed portions of the first face of the membrane film in electrical and physical contact with the membrane and with the electrically conductive screen.
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