Figure 5

Results of characterization of C_N. (a) TG profiles of C_N (a solid line) and C_P³⁰ (a dashed line). (b) (i) TEM image; (ii) HR-TEM image; (iii) HAADF-STEM image of the EDS analysis area. EDS images of (iv) copper K_α1; (v) nickel K_α1; (vi) oxygen K_α1. (vii) Merged image of (iv–vi).