Figure 2

Cyclic voltammetry of NPGL15 (a), NPGL30 (b), NPGL60 (c) and GCE (d) in (A) 0.01 M NaOH containing 10 mM N₂H₄ and in (B) 0.5 M H₂SO₄ containing 10 mM H₂O₂.

Scan rate: 50 mV s⁻¹. The insets show the respective voltammograms of bulk Au electrode for these two reactions. Digital photographs of (C) a NPGL-based MEA and (D) a DHHPFC single cell.