SEPARATOR(BIPOLAR PLATE) FOR FUEL CELL AND METHOD FOR PREPARING THE SAME, AND FUEL CELL SYSTEM COMPRISING THE SAME

摘要

A separator for a fuel cell contains nano-graphite thin plates with a thickness of about 3 to 30 nm or clusters of the nano-graphite thin plates. As such, the separator is capable of providing enough electrical conductivity with only a small amount of graphite, is light in weight, and has sufficient mechanical characteristics due to increased binding of graphite to resin, excellent resistance, and excellent thermal stability due to a reduction in the thermal expansion coefficient.