Inventors:
Andrea F. Gulla - Malden MA, US
Robert J. Allen - South Harwich MA, US
Assignee:
BASF Fuel Cell GmbH - Frankfurt Am Main
International Classification:
C30B 25/02
US Classification:
117 92, 117 97, 117103, 117108, 427115, 427497, 427523, 427564, 429 40, 429 41, 429 44, 204283, 204284, 20429014, 502101, 296231
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.