Defect-rich N/S-co-doped porous hollow carbon nanospheres derived from fullerenes as efficient electrocatalysts for the oxygen-reduction reaction and Zn–air batteries

Fullerene-derived N,S-co-doped porous hollow carbon nanospheres with tailored N,S dopants and abundant defects serve as efficient electrocatalysts for the oxygen-reduction reaction and Zn–air batteries.