LOW-TEMPERATURE FUEL-CELL STACK

摘要

The invention relates to a low-temperature fuel-cell stack, comprising a first, last and at least one central, serially connected fuel cell respectively provided with a distributor structure for distributing operating substances. According to the invention, the first and last fuel cells are provided with a distributor structure respectively providing for a volume flow of operating substances when the fuel cell stack is in operation, said flow of fuel deviating from that of the central fuel cell by at least 30 %, thereby making it possible to ensure an approximately even temperature distribution inside the entire stack during operation of said fuel cell stack, advantageously resulting in an approximately the same flow density distribution and therefore in a regular increase in the performance of the entire fuel cell stack. When pre-warmed operating substances are used, especially a pre-warmed educt, significantly more operating substances flow through the first and last cells than through the central cells.