Research / 2019 / Article / Fig 4

Research Article

Nanowrinkled Carbon Aerogels Embedded with FeN Sites as Effective Oxygen Electrodes for Rechargeable Zinc-Air Battery

Figure 4

ORR performance. (a) ORR polarization curves of CAC, CAC/Fe, NCAC/Fe, and NCAC-Zn/Fe, as well as the Pt/C at 1600 rpm in 0.1 M KOH at the potential sweep rate of 5 mV s−1. (b) H2O2 yield of CAC, CAC/Fe, NCAC/Fe, NCAC-Zn/Fe, and Pt/C. (c) , , and (at +0.85 V) of the NCAC-Zn/Fe carbon aerogels and Pt/C catalyst. (d) Tafel plots of NCAC-Zn/Fe and Pt/C. (e) ORR performance in acidic media. ORR polarization curves of the NCAC-Zn/Fe and the Pt/C at 1600 rpm on RDE in 0.1 M HClO4 at the potential sweep rate of 5 mV s−1. (f) ORR activity of aerogels derived from agar and gelatin hydrogels. ORR polarization curves of NCAA-Zn/Fe and NCAG-Zn/Fe as well as Pt/C at 1600 rpm on RDE in 0.1 M KOH at the potential sweep rate of 5 mV s−1.