Fig. 2

AC HAADF-STEM images of M1/N–C. M = Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Ga, Zr, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, W, Ir, Pt, Au, and Bi. SAs were highlighted by yellow circles. Scale bar, 2 nm
AC HAADF-STEM images of M1/N–C. M = Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Ga, Zr, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, W, Ir, Pt, Au, and Bi. SAs were highlighted by yellow circles. Scale bar, 2 nm