| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the size of a buffer part as much as possible, and to secure desired power generation performance by a lightweight and compact structure. <P>SOLUTION: This fuel cell 10 includes a first metal separator 18 and a second metal separator 20 sandwiching an electrode structure 16 having an electrolyte membrane. The first metal separator 18 has fuel gas passages 34, a fuel gas supply communication hole 24a, a fuel gas exhaust communication hole 24b, and an entrance buffer part 36a and an exit buffer part 36b making the fuel gas passages 34, the fuel gas supply communication hole 24a and the fuel gas exhaust communication hole 24b communicate with one another. The average pressure loss of the entrance buffer part 36a and the exit buffer part 36b is set not larger than the average pressure loss of the fuel gas passage 34. <P>COPYRIGHT: (C)2009,JPO&INPIT |
