378752.fig.001a
(a)
378752.fig.001b
(b)
Figure 1: (a) The conductivity of the CNT/PTFE composite film coated on glass substrate at various CNT concentrations. The CNTs with the lengths of 30 and 100 μm were used. (b) The contact resistance between the carbon paper and the bipolar plate coated at various CNT concentrations. The CNT with the length of 100 μm was used.