Engineering unsymmetrically coordinated Cu-S1N3 single atom sites with enhanced oxygen reduction activity

摘要

SEM, TEM and EDS images of S-Cu-ISA/SNC, C (pink), N (green), S (yellow) and Cu (red). HAADF-STEM image and the magnified image of S-Cu-ISA/SNC. The corresponding intensity profiles along the line X-Y in .