Hierarchical micro/mesoporous nitrogen-doped carbons derived from hypercrosslinked polymers for highly efficient oxygen reduction reaction

Hyperporous nitrogen-doped electrocatalyst NPC-An-900 is prepared from hypercrosslinked polyaniline, with high surface area of 2938.31 m2 g−1, good conductivity and high nitrogen-doped content of 7.02 at.% with striking enrichment of pyridinic N as high as 48.50 at.% of the total nitrogen content. NCP-An-900 exhibits excellent catalytic activity (Eonset = 0.96 V, E1/2 = 0.85 V), methanol tolerance and stability with current retention of 96.2% over 7.5 h, indicating its potential practical applications.248