FUEL CELL

摘要

A fuel cell includes a membrane electrode assembly, a separator, and a sealing member. The sealing member is provided on a separator surface and includes a base seal portion, a protruding seal portion, a first recessed portion, and a second recessed portion. The protruding seal portion protrudes from the base seal portion in a stacking direction so as to block leakage of at least one of a fuel gas, an oxidant gas, and a coolant which flow along the separator surface. The first recessed portion is disposed on a first side of the protruding seal portion. The second recessed portion is disposed on a second side of the protruding seal portion opposite to the first recessed portion. The first recessed portion and the second recessed portion have a height in the stacking direction smaller than a height of the base seal portion in the stacking direction.

主权项

1. A fuel cell comprising:
a membrane electrode assembly including an electrolyte membrane and electrodes sandwiching the electrode membrane therebetween; and a separator stacked on the membrane electrode assembly and including a sealing member, wherein the sealing member includes
a base seal portion having a planar shape extending along a separator surface,a protruding seal portion protruding from the base seal portion to a large height in a stacking direction of the separator, the protruding seal portion blocking leakage of at least one of a fuel gas, an oxidant gas, and a coolant, anda recessed portion disposed on each of two sides of the protruding seal portion, the recessed portion having a height in the stacking direction smaller than that of the base seal portion.