Figure 3

Evaluation of NP/C electrochemial activity.
(a) Polarization curves and (b) Tafel plots for ORR on Pt/C, PtxY/C and commercial Pt/C. (c) OER polarization curves of Ir/C and commercial Ir/C. (d) OER polarization curves of CoxO/C and commercial CoO-C. (e) Chronoamperometry curve for the glucose oxidation reaction on PtxAu1−x/C (0 ≤ x ≤ 1). (f) Polarization curves for FOR on Pd/C and commercial Pd/C.