Electrodeposition of amorphous molybdenum sulfide thin film for electrochemical hydrogen evolution reaction

BMC Chemistry

Table 2 Comparison of catalytic performance of different HER electrocatalysts in 0.5 M H₂SO₄

Catalyst	Exchange current density (μA cm⁻²)	j (mA cm⁻²) η = 150 mV	j (mA cm⁻²) η = 200 mV	j (mA cm⁻²) η = 250 mV	Overpotential η (mV vs. RHE) j = 10 mA cm⁻²	Tafel slop (mV dec⁻¹)
Pt wire	429.89	32.290	56.660	–	72	45
S-0.2	5.088	0.387	1.560	4.338	319	80
S-0.4	1.89	1.117	7.501	21.030	211	55
S-0.5	12.37	0.671	2.508	7.268	270	87

ISSN: 2661-801X