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Oxygen Reduction on Polycrystalline Pt and Au Electrodes in Perchloric Acid Solution in the Presence of Acetonitrile

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Figure

Figure 1. CVs of a Pt(poly) electrode recorded in oxygen free 0.1 M HClO4 solution: (a) without and with the addition of 0.04 mM – 0.2 M of AcN; (b) with the addition of 1.0 M – 3.0 M of AcN
Figure 2. LVs for ORR on a rotating Pt(poly) electrode in oxygen saturated 0.1 M HClO4 solution without and with the addition of 0.04 mM – 3 M of acetonitrile, obtained for the same rotation rate of 1600 rpm
Figure 3.  LVs for ORR on a rotating Pt electrode in oxygen saturated 0.1 M HClO4 solution: (a)    without and (b) with 0.2 M AcN
Figure 4. Tafel plots for ORR on Pt(poly) in 0.1 M HClO4 solution and in ones containing 0.04 mM –  0.2 M of AcN
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