Gram-scale synthesis and unraveling the activity origin of atomically dispersed Co-N4O sites toward superior electrocatalytic oxygen reduction

Sike Zhang, Qixing Zhou, Linya Fang, Rui Wang, Tingyu Lu, Qun Zhao, Xuefang Gu, Shu Tian, Lin Xu, Huan Pang, Jun Yang, Yawen Tang, Shuhui Sun