| 摘要 |
A fuel cell with multiple independent reaction regions comprises multiple fuel cell units. Each fuel cell unit comprises bipolar plates (10) and a membrane electrode assembly (20) located between the bipolar plates (10). The membrane electrode assembly (20) comprises a proton exchange membrane (22) and catalyst layers (21) located at both sides of the proton exchange membrane (22), and the catalyst layers (21) at least at one side of the proton exchange membrane (22) are formed with multiple mutually independent catalyst sublayers (21). Different from the prior design concepts of striving to distribute reactants as uniformly as possible in the whole reaction area, the whole cell in this invention is divided into multiple independent reaction regions, and relevance of the reaction regions is eliminated. Therefore, by partitioning and reducing the amplitude of possible voltage difference, this invention is able to reduce electrochemical corrosion and maximize performance of each independence region and the whole fuel cell. |
