High-Period Element Doping as a Key Driver of Hydrogen Evolution in a Proton Exchange Membrane Water Electrolyzer.

ABSTRACT: Proton exchange membrane water electrolysis (PEMWE) is a promising strategy for sustainable hydrogen production, but its application is limited by the high cost and instability of catalysts under acidic operation conditions. Here, the study reports group VA element-doped graphitic nanoplatelets (XGnPs; X = N, P, or Sb) as effective supports to enhance both the activity and durability of electrocatalysts. The resulting platinum (Pt) nanoparticles on XGnPs (Pt@XGnPs) catalysts exhibit improved charge transfer to the metal and strong metal-support interactions. Among them, Pt@SbGnP exhibits the best performance, with a low overpotential of 15.3 mV at 10 mA cm^-2 and a Tafel slope of 27.8 mV dec^-1, surpassing commercial Pt/C. System-level testing further confirmed its supe

SUBMITTER: Baek JH 

PROVIDER: S-EPMC12490176 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature