Fuel cell, fuel cell stack and method of operating a fuel cell stack
AssigneeRobert Bosch GmbH
InventorsHelerson Kemmer, Kai Weeber
Life of this patent
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Abstract
The invention relates to a fuel cell (1) for a fuel cell stack (11), comprising a polymer membrane (2) which serves as an electrolyte and has respectively on both sides a catalyst layer (3, 4) for forming an anode (3) on the one side and a cathode (4) on the other side, a gas diffusion layer (5) and a bipolar plate (6) being applied to each of the two analyst layers (3, 4). According to the invention, a short-circuit element (7) is applied, preferably printed, to at least one bipolar plate (6), namely on the side facing away from the gas diffusion layer (5). The invention also relates to a fuel cell stack (11) and to a method for operating a fuel cell stack (11).
Claims18
A fuel cell (1) for a fuel cell stack (11), comprising a polymer membrane (2) which serves as an electrolyte and which comprises on either side a catalyst layer (3, 4) for forming an anode (3) on one side and a cathode (4) on the other, the two catalyst layers (3, 4) each bearing an applied gas diffusion layer (5) and also an applied bipolar plate (6), wherein at least one bipolar plate (6) bears an applied, short-circuit element (7) on a side facing away from the gas diffusion layer (5) of a respective catalyst layer (3,4).
Dependencies are inferred from the claim text.