“…[85], [86], [84], [87], [88], [89], [90], [91], [92]). [85], [86], [84], [87], [88], [89], [90], [91], [92] Figure 7. Long-term stability curves for modified with alternative precursor and mono or dual-doped electrocatalysts: (1) NCNT-900 (N-doped carbon nanotubes) (at −0.4 V vs SCE) [40]; (2) S-P-N-doped graphitized carbon-1000 (at −0.3 V vs SCE) [78]; (3) NOMC (N-doped ordered mesoporous) (at −0.3 V vs Ag/AgCl) [84]; (4) P(2 at.…”