fig7

Figure 7. (A) DFT-calculated energy pathway for the formation of Ni-N₄ from the NiCl_2, and (B) Ni K-edge EXAFS spectra of NiCl₂/NC precursor, NiCl/NC intermediate, and Ni₁/NC^[61], reproduced from Ref.^[61] with permission. Copyright 2021 Springer Nature. (C) Illustration of the formation process of Pt ADMS using thermal emitting^[140], reproduced from Ref.^[140] with permission. Copyright 2019 American Chemical Society. (D) Illustration of the formation process of Fe ADMS from metal center replacement, (E and F) TG-MS signals revealing the gas emission^[141] during metal center replacement, reproduced from Ref.^[141] with permission. Copyright 2021 Springer Nature.