| 摘要 |
A fuel cell system has a plurality of individual fuel cells which are combined into a stack, where each of the individual fuel cells has a substantially planar membrane-electrode unit, two gas diffusion layers in the form of a fiber structure and of a bipolar plate, which establishes the electrical connection to the adjacent individual fuel cell that is located above or below. The gas diffusion layers adjoin the larger surfaces of the membrane electrode unit, which are located opposite of one another, and the bipolar plate comprises an active region surrounded by an edge region. In addition, the bipolar plates in the active region have a completely flat design so that the gas-carrying region is formed exclusively by the gas diffusion layers, what amounts to at least 60% of the height of an individual fuel cell. |
