. 2026 Jan 14;16(4):3261–3275. doi: 10.1039/d5ra06931a

Table 3. Comparison of overpotential, Tafel slope at mass-normalized current density of 10 mA cm⁻², and charge transfer resistance 1 M H₂SO₄.

Sample names	Overpotential (mV)	Tafel slope (mV dec⁻¹)	Charge transfer resistance (R_ct) (Ω)
NiO	582	91	266
NiS_x (x = 1, 2)	357	72	170
NiS_x/NiO/MoS₂	166	55	52

Table 3. Comparison of overpotential, Tafel slope at mass-normalized current density of 10 mA cm−2, and charge transfer resistance 1 M H2SO4.