fig4
Figure 4. (A) Synthesis of CoOx/Co@CNy hybrid materials (reproduced with permission from Elsevier, copyright 2023)[96]; (B) preparation of FePc@NCNS (reproduced with permission from Elsevier, copyright 2023)[97]; (C) schematic of the PtSA-m/HPCNR composite material (E-H reproduced with permission from Wiley-VCH, copyright 2023)[98]. MOFs: Metal-organic frameworks; MIL: Materials Research Institute Lavoisier.
