Figure 2 | Scientific Reports

Figure 2

From: A simple preparation of very high methanol tolerant cathode electrocatalyst for direct methanol fuel cell based on polymer-coated carbon nanotube/platinum

Figure 2

Electrochemical measurements of the conventional CB/Pt, MWNT/PyPBI/Pt and MWNT/PyPBI/Pt/PVA.

ORR polarization curves for the CB/Pt (a), MWNT/PyPBI/Pt (b) and MWNT/PyPBI/Pt/PVPA (c) in O2-saturated 0.1 M HClO4 and varying concentrations of methanol at 25 °C, rotation rate of 1600 rpm and sweep rate of 10 mV/s. In all figures, methanol concentrations are: 0 M (red), 0.5 M (black), 1 M (blue) and 2 M (green). (d) Methanol oxidation reaction (MOR) curves were recorded in 0.1 M HClO4 and 1 M methanol at a scan rate of 50 mV/s for the CB/Pt (black line), MWNT/PyPBI/Pt (blue line) and MWNT/PyPBI/Pt/PVPA (red line) before durability test.

Back to article page