Table 1 Underlying electrochemical processes occurring during the H evolution reaction

From: The rapid electrochemical activation of MoTe2 for the hydrogen evolution reaction

Volmer step

H3O+ + e → Hads + H2O

Discharge step

Heyrovsky step

Hads + H3O+ + e → H2 + H2O

Electrochemical desorption step

Tafel step

Hads + Hads → H2

Recombination step