Fig. 3. Correlation between the exchange current density of HOR/HER and Hupd desorption peak potential.
Exchange current densities of HOR/HER on Pt/C, Ir/C, Pd/C, and Rh/C as a function of the lowest underpotential-deposited hydrogen (Hupd) desorption peak potential (Epeak) from CVs. The gray dashed line represents linear fitting of all data points.