Fig. 7: Coupled cation effects with catalyst materials and solution pH.
From: Disentangling the Janus-faced effects of cations in electrocatalysis
a Experimental observations showing the influence of K⁺ concentration on HER activity on Au and Pt electrodes at different pH values. Experimental data are taken from ref. 7. b Simulated HER activity as a function of K⁺ concentration under varying adsorption strengths of K⁺, while all other parameters remain unchanged. Experimental conditions: \({E}_{{{\rm{M}}}}=-0.6\,{{\rm{V}}}\) versus RHE for Au and \({E}_{{{\rm{M}}}}=-0.3\,{{\rm{V}}}\) versus RHE for Pt. Simulation conditions: \({E}_{{{\rm{M}}}}=-0.6\,{{\rm{V}}}\) versus RHE and pH = 11. Source data are provided as a Source Data file.
