fig8
Figure 8. (A) Schematic diagram of fabrication of Fe1-Ni1-N-C; (B and C) LSV curves (B) and FECO test (C) of Fe1-Ni1-N-C and other catalysts; (A-C) are quoted with permission from Jiao et al.[163]; (D) Preparation strategy of NiN3@CoN3-NC; (E and F) HRTEM test (E) and HAADF-STEM elemental mapping images (F) of NiN3@CoN3-NC; (D-F) are quoted with permission from Zhang et al.[170]. ZIF: Zeolitic imidazolate framework; RHE: reversible hydrogen electrode; LSV: linear sweep voltammetry; FECO: Faradaic efficiency for CO; HAADF-STEM: high-angle annular dark field scanning transmission electron microscopy.
