Gas Diffusion Electrodes, Membrane-Electrode Assemblies and Method for the Production Thereof
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United States of America Patent
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Issued Date -
Oct 16, 2008
app pub date -
Apr 13, 2006
filing date -
Apr 14, 2005
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Abstract
A method for forming a patterned noble metal coating on a gas diffusion medium substantially free of ionomeric components comprising subjecting an electrically conductive web with a patterned mask overlaid thereto to a first ion beam having an energy not higher than 500 eV, and to a second beam having an energy of at least 500 eV, containing the ions of at least one noble metal and a gas diffusion electrode.
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