摘要:
The invention relates to a fuel cell, comprising: - first and second electrochemical cells; - a two-pole plate arranged between the first and second electrochemical cells, comprising a conductor support (102) delimiting a first flow channel (106) facing the first electrochemical cell and extending between an air inlet (125) and a water outlet (126), and comprising a first conductive coating (141) attached to the conductor support at the air inlet of the first flow channel and comprising a second conductive coating (142) fastened to the conductor support at the middle part of the first flow channel, the second conductor coating having an electrical surface resistance greater than that of the first conductive coating.
摘要:
A fuel cell comprises at least one stack (5) the main elements of which are perpendicular to a support substrate (1). This stack (5) is provided with an electrolytic membrane (6) located between first and second electrodes (15a, 15b). The first and second electrodes (15a, 15b) each comprise a catalytic layer (7) in contact with the electrolytic membrane (6). Each electrode comprises an electrically conductive porous diffusion layer (16) and each stack (5) is inserted between electrically conductive first and second support partitions (17a, 17b) which are perpendicular to the support substrate (1) and constitute current collectors for the stack (5). The support partitions (17a, 17b) are electrically isolated from each other.
摘要:
The invention relates to a current collecting plate (50) for a fuel cell. According to the invention, the plate comprises a substantially constant thickness of an electrically conductive material along the stacking axis of the cells of the fuel cell, forming a plane at the end of the stack in order to collect the current from the fuel cell. The invention is characterised in that it comprises holes (52) pierced in the thickness of the material, extending parallel to the plane of the plate.
摘要:
The invention relates to a fuel cell (1), comprising: - at least three membrane/electrodes assemblies (31,32, 33); - at least first and second metallic bipolar plates (21, 22) interposed between said membrane/electrodes assemblies, each of these bipolar plates comprising two metallic foils (41, 42) facing a respective membrane/electrodes assembly and secured by welds (211, 221, 231). At least a part of said welds (211) of the first bipolar plate is not superimposed on the welds (221) of the second bipolar plate.