The EDL capacitance increases following water < Li < K. The influence of the alkali metals on Au(111) was measured by Garlyyev et al., showing the same trends. They studied Au(111), in 0.05 M AMClO 4 (AM: Li + , Na + , K + , Rb + , Cs + ) electrolytes using impedance spectroscopy measurements. They found that the capacitance measured next to the point of zero charge increases in the presence of alkali metal cations as Li + < Na + < K + < Rb + < Cs + and it is inversely proportional to the cation hydration energy. The reported capacitances refer to solutions with alkali metal perchlorates, we expect the values to be different for hydroxides, but to scale keeping the same trends for the ions. We determined that the capacitance for water is ( 10.92 ± 1.10 µF/cm 2 ). For electrolytes containing Li and K, the EDL capacitance values are comparable, both measuring (10.30 ± 0.95 µF/cm 2 ). In simulations conducted without the OH -anion, the trend K > Li is still observed, albeit less pronounced. However, no significant variation in EDL capacitance is observed between the Li-and K-containing systems under these conditions.