fig8

Figure 8. (A) The preparation method of Co SAs/N-C. Reproduced from Yin et al.^[140] by permission from Wiley-VCH. (B) Schematic diagram of the molten-salts mediated pyrolysis method of Fe-N/C-SAC. Reproduced from Xin et al.^[142] by permission from Wiley-VCH. (C) Schematic diagram of the “Shape Fixing via Salt Recrystallization” strategy. Reproduced from Ding et al.^[144] by permission from ACS. (D) Synthesis of TPI@Z8(SiO₂)-650-C. Reproduced from Wan et al.^[145] by permission from the Springer Nature. (E) Morphology and electrochemical characterization of FeN-HPC. Reproduced from Chen et al.^[147] by permission from Elsevier. (F) The formation of n-HPFN@CQDs. Reproduced from Ma et al.^[150] by permission from Elsevier.