Os/Si nanocomposites as excellent hydrogen evolution electrocatalysts with thermodynamically more favorable hydrogen adsorption free energy than platinum

Os/SiNW exhibits a thermodynamically favorable hydrogen adsorption free energy of −0.03 eV endowing its excellent electrocatalytic activity and stability for HER, which even surpasses 40 wt% Pt/C at overpotentials above −60 mV.103