434186.fig.008a
(a)
434186.fig.008b
(b)
Figure 8: (a) Polarization curves of GO paper MEA at scan rate of 5 mV s−1 for direct methanol fuel cell 1 M methanol (flow rate 3 cc min−1) and oxygen (flow rate 400 cc min−1) at 60°C. (b) Polarization curves of Nafion 115 MEA at 5 mV s−1 for direct methanol fuel cell 1 M methanol (flow rate 3 cc min−1) and oxygen (flow rate 400 cc min−1) at 60°C.