Medium distribution field plate with increased, homogeneous current density distribution for an electrochemical cell and an electrochemical cell containing such

摘要

Media distributor field plate for an electrochemical cell, wherein in the media distribution field plate parallel, by webs (1) limited media guide channels (2) for the fluid reaction media are arranged with a meandering structure, said at the meander boundary channels (3, 3 '), which on webs with opposite Meandering webs (4, 4 ') are provided which are widened stepwise rising, in such a way that the web width in the deflection regions (5, 5') of the meander boundary channels (3, 3 ') is lowest. Furthermore, the invention relates to an electrochemical cell, in particular a fuel cell or redox flow cell with such a media distribution field plate on the cathode side and / or anode side, in particular a direct methanol fuel cell (DMFC).