Metal–N4 model single‐atom catalyst with electroneutral quadri‐pyridine macrocyclic ligand for CO2 electroreduction oleh Jian‐Zhao Peng, Yin‐Long Li, Yao‐Ti Cheng, Fu‐Zhi Li, Bo Cao, Qing Wang, Xian Yue, Guo‐Tao Lai, Yang‐Gang Wang, Jun Gu