A bipolar plate and a fuel cell using the same are provided. The bipolar
plate includes a flow field that has a length between three and eight
times greater than the square of the area of the bipolar plate. The fuel
cell includes a first bipolar plate in which a fuel flow field having a
length that is between three and eight times greater than the square of
the area of the first bipolar plate is formed, and a second bipolar plate
in which an air flow field having a length that is between three and
eight times greater than the spare of the area of the second bipolar
plate is formed. The fuel cell has a lower, uniform internal pressure and
can produce a greater power.