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Bio-oil, the unavoidable liquid product of the thermal conversion of biomass, shows high carbon content and aromatic compounds to be a promising carbon precursor. Herein, nitrogen-doped hierarchically porous carbons (NHPCs)...

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The development of catalysts for oxygen reduction reaction with excellent performance, low cost, and long‐time stability is significant for energy conversion devices like fuel cells. Herein, micro/mesoporous nitrogen‐doped carbon has been successfully fabricated through one‐step pyrolysis and activation by using cellulose and polyamide as precursors and ZnCl2 as activator. The sample displayed the comparable ORR catalytic activity (onset potential, 0.986 V vs. RHE) with commercial platinum‐based catalysts as well as excellent durability to methanol crossover effect. Furthermore, the correlations between ORR performance and chemical and structural properties (i. e. graphitic N and pyridinic N content, ID/IG, BET specific surface area and micropore volume) have been investigated. This report provided a facile and cost‐effective method of transforming nylon waste and biomass‐derived resource into nitrogen‐doped carbon.