Figure 3: ORR activities of Pt-CTF/CP and Pt/C in the presence of methanol.

j versus U curves for (a) Pt-CTF/CP and (b) 20 wt% Pt/C in 0.5 M H₂SO₄ saturated with dissolved oxygen. Methanol concentration: (black) 0 M, (blue) 0.1 M and (red) 1.0 M.