Fig. 5: Electrochemical performances. | Nature Communications

Fig. 5: Electrochemical performances.

From: Stable hydrogen evolution reaction at high current densities via designing the Ni single atoms and Ru nanoparticles linked by carbon bridges

Fig. 5: Electrochemical performances.

a, b Polarization curves and Tafel plots of the UP-Ni/C, UP-Ru/C, CP-RuNi/C, UP-RuNiSAs/C and commercial Pt/C catalysts in 1.0 M KOH. c TOF values of UP-RuNiSAs/C compared with Pt/C and previously reported catalysts in 1 M KOH. d Activity of Ru mass normalization of the UP-Ru/C, CP-RuNi/C, UP-RuNiSAs/C catalysts at η20 and η50 in 1 M KOH. e Long term stability testing of the UP-RuNiSAs/C catalysts in 1.0 M KOH. f Comparison in terms of overpotentials for UP-RuNiSAs/C and recently reported electrocatalysts at different current densities (η10, η500 and η1000) in 1.0 M KOH and pH-universal performance comparison of UP-RuNiSAs/C and recently reported HER electrocatalysts. The catalyst loading was 1.25 mg cm−2, the pH of the electrolyte was 13.6, and the liquid resistance was about 1.613 Ω.

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