fig6

Figure 6. (A) TEM images of La-MoP@NC; (B) The iR-corrected LSV curves of La-MoP@NC in alkaline, acidic, and neutral media. This figure is quoted with permission from Wei et al.^[78]; (C) SEM images of the surface of Ho-LaNi₅/NF; D: HER polarization curves of Ho-LaNi₅/NF, LaNi₅/NF, Ni foam, Ni plate and commercial Pt/C. This figure is quoted with permission from Shi et al.^[80]; (E) iR-Corrected polarization curves of La-NMS@NF in 1.0 M KOH. This figure is quoted with permission from Jin et al.^[82]; (F) The OER and HER properties of HEAs were tested on NF using a three-electrode system; G: Distribution of each element in FeCoNiMnRuLa/CNT under the bright field conditions. This figure is quoted with permission from Zhang et al.^[83]; (H) Polarization curves of catalysts for HER. This figure is quoted with permission from Wu et al.^[84]. RHE: Reversible hydrogen electrode; NF: nickel foam; NP: nickel plate; CNT: carbon nanotube; HAADF: high-angle annular dark-field; TEM: transmission electron microscopy; SEM: scanning electron microscopy; HER: hydrogen evolution reaction; OER: oxygen evolution reaction; LSV: linear sweep voltammetry; iR: internal resistance; HEA: high-entropy alloy.