Fig. 4: Comparison of electrochemical HER parameters. | Nature Communications

Fig. 4: Comparison of electrochemical HER parameters.

From: Ruthenium anchored on carbon nanotube electrocatalyst for hydrogen production with enhanced Faradaic efficiency

Fig. 4

a, b The polarization curves were recorded before and after 10,000 CV potential cycles. c Comparison of overpotential changes at 10 mA cm−2 after 10,000 CV potential cycles in acidic and alkaline conditions. d Specific activities at different overpotentials (10, 20, and 30 mV) in N2-saturated acidic and alkaline conditions, respectively. e Comparison of TOF values of the Ru@MWCNT and Pt/C with other recently reported HER catalysts in acidic and alkaline conditions, respectively. f Mass activities in N2-saturated 0.5 M aq. H2SO4 and 1.0 M aq. KOH solutions, respectively.

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