C-Z8 2.59 94.47 2.78 - 0.16 Tested by XPS a Table S3 A comparison of ORR activity in acidic electrolyte for Fe-N-C catalysts reported before and newly prepared in this work. H2O2 yield Mass Half-wave potential (%) activity at Materials potential Ref (V RHE) (0.1-0.8 V 0.8 V vs. vs. vs. (V RHE) vs. RHE) RHE Catalysts derived from heterometal-embedded 0.90 0.76 - - organic conjugate frameworks Carbon nanotube sponge 0.86 0.68-0.7 - - catalysts PANI-Fe-C 0.92 0.80 ~1 6.7 Non-precious metal electrocatalysts prepared 0.914 0.78 <8.5 4.0 from zeolitic imidazolate frameworks Nitrogen-doped carbon architectures with iron 0.92 0.77 <1.8 - carbide encapsulated in graphitic layers Nitrogen-doped hierarchically porous 0.90 0.70-0.72 <1.87 - carbon Phenylenediamine-based 0.92 0.82 <4 11.5 FeNx/C catalyst 0.88 0.74 - - graphitic architectures S-Doping Fe/N/C ORR - 0.836 - 23 Catalyst GNTs with a 2.66 (@ 0.9 Biomimetic Heme - 0.88 <1 V) Model Compound
C-Z8 2.59 94.47 2.78 - 0.16 a Tested by XPS Table S3 A comparison of ORR activity in acidic electrolyte for Fe-N-C catalysts reported before and newly prepared in this work. Materials potential (V vs. RHE) Half-wave potential (V vs. RHE) H2O2 yield (%) (0.1-0.8 V vs. RHE) Mass activity at 0.8 V vs. RHE Ref Catalysts derived from heterometal-embedded organic conjugate frameworks 0.90 0.76 - - Carbon nanotube sponge catalysts 0.86 0.68-0.7 - - PANI-Fe-C 0.92 0.80 ~1 6.7 Non-precious metal electrocatalysts prepared from zeolitic imidazolate frameworks 0.914 0.78 <8.5 4.0 Nitrogen-doped carbon architectures with iron carbide encapsulated in graphitic layers 0.92 0.77 <1.8 - Nitrogen-doped hierarchically porous carbon 0.90 0.70-0.72 <1.87 - Phenylenediamine-based FeNx/C catalyst 0.92 0.82 <4 11.5 graphitic architectures 0.88 0.74 - - S-Doping Fe/N/C ORR Catalyst - 0.836 - 23 GNTs with a Biomimetic Heme Model Compound - 0.88 <1 2.66 (@ 0.9 V)
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