3.2. Interfacial contact resistance
Fig. 4 plots the contact resistance of the aluminum sample as
a function of the compacting pressure. The contact resistance
decreased with increasing pressure due to the increasing actual
contact area between the surface of the sample and GDL layer. The
contact resistance of Samples 1, 2 and 3 at 200 N cm2 was 96, 71
and 21 mU cm2
, respectively. Samples 2 and 3 had, respectively,