Fig. 6
From: Selectively nitrogen-doped carbon materials as superior metal-free catalysts for oxygen reduction
Performance of catalysts for the oxygen reduction reaction in acidic media. a Linear sweep voltammetry curves of commercial Pt/C and all of the pyridinic nitrogen-doped hydrogen-substituted graphdiyne (N-HsGDY) catalysts recorded in O2-saturated 0.1 M HClO4 at 1600 rpm. b Electron transfer number and peroxide yield calculated from the rotating ring-disk electrode (RRDE) measurements for N-HsGDY treated at 900 °C (N-HsGDY-900 °C). c, d Durability tests of the commercial carbon-based platinum catalyst (Pt/C) (c), and N-HsGDY-900 °C (d) catalysts before and after 5000 cycles in O2-saturated 0.1 M HClO4
