fig14

Figure 14. TEM of FNPBO with different Fe/Ni ratios: (A) Fe_0.3Ni_28.6P_6.8B_8.7O_55.6; (B) Fe_4.0Ni_20.9P_11.6P_4.5O_58.9; (C) Fe_6.4Ni_16.1P_12.9B_4.3O_60.2 (the insert is SAED pattern); (D) Fe_10.2Ni_12.0P_12.3B_4.9O_60.6; (E) Fe_10.0Ni_5.5P_15.5B_5.8O_63.1; and (F) Fe_16.8Ni_6.1P_9.3B_7.7O_60.1. (G) Tafel slope-potential plots of the Ni_33.3B_14.7O_52.0, Ni_33.7P_3.2B_10.2O_52.9, FNPBO catalysts, and commercial RuO₂. (H) Durability test of Fe_6.4Ni_16.1P_12.9B_4.3O_60.2 nanocages at 236 mV. (Reproduced with permission^[119]. (Copyright 2019, American Chemical Society).