Platinum–Nickel (Pt–Ni) Nanocluster Catalysts with Pt–NiO Interface

These are nanoscale catalyst particles composed initially of alloyed platinum and nickel atoms that can reorganize under stimulus into hybrid structures with one platinum-rich metallic half and one nickel oxide half, joined at an atomically defined interface highly active for the hydrogen evolution reaction in water electrolysis.[1][2] The material aims to provide record‑level hydrogen production performance while minimizing platinum usage by leveraging cooperative interactions between Pt and NiO at the interface.[1][2][6]