Figure 6: Electrochemical measurements. | Nature Communications

Figure 6: Electrochemical measurements.

From: Spontaneous incorporation of gold in palladium-based ternary nanoparticles makes durable electrocatalysts for oxygen reduction reaction

Figure 6

(a) CVs and (b) CO stripping of Pd6CoCu/C nanoparticles with and without Au decoration in 0.1 M HClO4 purged with N2, sweep rate, 50 mV s−1. (c) ORR polarization curves of Au–Pd6CoCu/C nanoparticles before and after cycling in N2-saturated 0.1 M HClO4; rotation rate, 1,600 r.p.m.; and sweep rate, 5 mV s−1. The inset in c shows CVs of the Au–Pd6CoCu/C nanoparticles after different numbers of potential cycles between 0.05 and 1.0 V in N2-saturated 0.1 M HClO4 and sweep rate, 50 mV s−1. (d) ORR polarization curves of Au–Pd6CoCu/C nanoparticles before and after cycling in O2-saturated 0.1 M HClO4 between 0.6 and 1.0 V; rotation rate, 1,600 r.p.m. and sweep rate, 5 mV s−1. The inset in d shows changes in the voltammetric profile for Au–Pd6CoCu/C before and after 10,000 potential cycles between 0.6 and 1.0 V in O2-saturated 0.1 M HClO4, sweep rate, 50 mV s−1.

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