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. 2021 Jun 1;12:3264. doi: 10.1038/s41467-021-23582-2

Fig. 4. Tafel curves for CH4 formation at different electrolyte pH.

Fig. 4

a The logarithms of partial current densities for CH4 formation plotted in RHE scale. b The change of Tafel slope for CH4 formation at less biased potentials in electrolyte with pH 9.0. c, d Possible RDS shift of CH4 formation by decreasing overpotential. The error bars represent SD from at least three independent measurements.