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

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

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