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. 2023 Jan 13;10(7):2206029. doi: 10.1002/advs.202206029

Figure 5.

Figure 5

a) C dl and normalized electrochemically active surface area of CoSe2‐NiSe2/NPFC and other references in 0.5 M H2SO4. b) Polarization curves of CoSe2‐NiSe2/NPFC before and after 1000 cyclic voltammetry (CV) cycles in 0.5 M H2SO4. c) Cycling stability of CoSe2‐NiSe2/NPFC after 24 h at −10 mA cm−2 in 0.5 M H2SO4. d) C dl and normalized electrochemically active surface area of CoSe2‐NiSe2/NPFC and other references in 1.0 M KOH. e) Polarization curves of CoSe2‐NiSe2/NPFC before and after 1000 CV cycles in 1.0 M KOH. f) Cycling stability of CoSe2‐NiSe2/NPFC after 36 h at −10 mA cm−2 in 1.0 M KOH. g) SEM, h) XPS, and i) XRD results before and after HER in 0.5 M H2SO4 and 1.0 M KOH.