The impact of Pt particle size distribution on the HER pathway and performance

Key Points

• The research aims to investigate how the size distribution of Pt nanoparticles affects the hydrogen evolution reaction (HER) performance and pathway.
• Synthesis of Pt nanoparticles using porous polydopamine spheres.
• Characterization of particle size distribution and activity.
• Evaluation of overpotential and mass activity compared to commercial Pt/C.
• Optimized Pt/CS-200 exhibits an overpotential of 17 mV at 10 mA cm-2.
• Achieved 200% higher mass activity than commercial Pt/C.
• Demonstrates a Tafel slope of 29.8 mV dec-1 indicative of a Volmer-Tafel pathway.

Abstract