S-doped Au/Pd/Pt aerogels becoming superior HER catalysts by constructing an atomic-scale Pd diffuse interface

In this work, an S 6.5 -doped Au 77.6 /Pd 0.8 /Pt 15.1 aerogel with a structure composed of an Au core, an atomic-scale Pd diffuse interface and a Pt shell was successfully prepared by adopting an unconventionally low Pd-to-Pt precursor molar ratio.