A flow field plate for a fuel cell or electrolyser comprises on at least one face an assembly of channels comprising one or more gas delivery channels, one or more gas removal channels, and a permeable wall separating same. The permeable wall may comprise a plurality of gas diffusion channels....http://www.google.es/patents/US7838139?utm_source=gb-gplus-sharePatente US7838139 - Flow field plate geometries
