fig5

Figure 5. (A) OER LSV curves of NiCrS/CN in 1 M KOH and 1 M KOH + Seawater in three electrode configuration; (B and C) LSV curves of NiCrS and NiCrS/CN for overall water splitting in 1 M KOH and 1 M KOH + Seawater in two electrode configuration; (D) ECSA normalized LSV curves of NiCrS and NiCrS/CN for overall water splitting in 1 M KOH + Seawater in two electrode configuration; (E and F) Chronopotential curves of NiCrS and NiCrS/CN at 50 mA cm^-2 in 1 M KOH and 1 M KOH + Seawater in two electrode configuration; (G) Comparison of the potential to attain 100 mA cm^-2 current density of overall water splitting between NiCrS/CN and other catalysts. OER: Oxygen evolution reaction; ECSA: electrochemical activation surface area; RHE: reversible hydrogen electrode; LSV: linear sweep voltammetry.