Fig. 7: Theoretical modeling.
From: A fundamental viewpoint on the hydrogen spillover phenomenon of electrocatalytic hydrogen evolution
a Calculated free energy diagram for HER on Pt2Ir1/CoP paradigm and Pt/CoP benchmark. b The optimized H* adsorption structures at various sites. c Electron density difference map of interfaces, where a loss of electrons is indicated in blue and electron enrichment is indicated in red.
