Fig. 5: Bulk and interface structure of the PbBr2 and PbCl2 systems.

a Laurionite crystal structure, illustrated for the case of Pb(OH)Br (generated by VESTA72). b Profiles of the electron density \(\left\langle \rho \left(z\right)\right\rangle\) obtained from fits of the XRR measurements in Fig. 2, corresponding to the interface structure in the potential regime of Pb de-amalgamation in Br (brown), Cl (green), and F (blue) containing electrolyte. c, d Structural models used to describe the Hg-electrolyte interface in the presence of Pb-containing adlayers for the case of c Br and d Cl anions.