LAUSR

Proton exchange membrane water electrolysis is a sustainable method to produce green hydrogen. However, its widespread application is constrained by the high cost and limited durability of Pt‐based catalysts used in the hydrogen evolution reaction (HER). In this study, we developed a Pt‐incorporated MoP catalyst supported on Ketjen black (Pt‐MoP/C), containing only 8.1 wt.% Pt. This catalyst significantly outperforms the conventional 20 wt.% Pt/C, achieving an overpotential of 3 mV at a current density of 10 mA·cm−2 and a Tafel slope of 31.8 mV·dec−1 compared to 16 mV@10 mA·cm−2 and 33.8 mV·dec−1 for Pt/C. XPS analysis revealed a strong interaction between Pt and MoP, leading to increased electron density at the Pt sites. This synergy effect between the Pt and MoP enhances HER activity. Moreover, the Pt‐MoP/C catalyst maintained its catalytic activity after 300 h of stability testing. These findings provide valuable insights into the development of innovative Pt‐based catalysts for improved HER performance.