Atomic‐Layered Platinum‐Based Intermetallic with Phosphorus Pillar Nanoengineering Enables pH‐Universal Hydrogen Oxidation Catalysis
Year: 2025
Type: article
Abstract: Layered materials boost hydrogen energy catalytic efficiency by expanding electrochemically surface area and elevating the intrinsic site activity. However, synthesizing atomically layered platinum intermetallic catalysts remains challenging due to platinum’s bulk crystallization tendency. Herein, we first prepare Pt 5 GaP and Pt 5 InP nanoparticles with self‐supported interlayer tunnels via pillar nanoengineering, featuring Pt 5 X (X = Ga/In) tri‐layers alternating with “P pillars”. The pillar effect enables selective H 2 transport while blocking CO, endowing superior full‐pH HOR activity and CO tolerance vs. commercial Pt/C. Pt 5 InP exhibits 13.9‐ and 11.5‐fold higher mass activity than Pt/C at pH = 1 and 13 (50 mV overpotential) with exceptional CO resistance. This novel layered compound and generalizable strategy pave the way for atomic‐scale platinum‐based catalysts, offering a tunnel size‐dependent CO‐tolerant approach and expanding small‐molecule catalysis applicability.
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: bronze
Funders: National Natural Science Foundation of China, Chinese Academy of Sciences, University of Science and Technology of China, Hefei Center for Physical Science and Technology, Foundation for Innovative Research Groups of the National Natural Science Foundation of China, National Key Research and Development Program of China
OpenAlex ID: W4417491648