Rapid preparation of carbon-supported ruthenium nanoparticles by magnetic induction heating for efficient hydrogen evolution reaction in both acidic and alkaline media

SusMat

article

Qiming Liu¹  Bingzhang Lu¹  Forrest Nichols¹  Jeffrey Ko²  Rene Mercado¹  Frank Bridges²  Shaowei Chen¹ 

[1]Department of Chemistry and Biochemistry, University of California

[2]Department of Physics, University of California

关键词: Cl-enriched surface;    density functional theory;    hydrogen evolution reaction;    magnetic induction heating;    ruthenium;   

DOI  :  10.1002/sus2.66

学科分类：电力

来源: Wiley

【 摘 要 】

Ruthenium has been hailed as a competitive alternative for platinum toward hydrogen evolution reaction (HER), a critical process in electrochemical water splitting. In this study, we successfully prepare metallic Ru nanoparticles supported on carbon paper by utilizing a novel magnetic induction heating (MIH) method. The samples are obtained within seconds, featuring a Cl-enriched surface that is unattainable via conventional thermal annealing. The best sample within the series shows a remarkable HER activity in both acidic and alkaline media with an overpotential of only -23 and -12 mV to reach the current density of 10 mA/cm 2 , highly comparable to that of the Pt/C benchmark. Theoretical studies based on density functional theory show that the excellent electrocatalytic activity is accounted by the surface metal-Cl species that facilitate charge transfer and downshift the d-band center. Results from this study highlight the unique advantages of MIH in rapid sample preparation, where residual anion ligands play a critical role in manipulating the electronic properties of the metal surfaces and the eventual electrocatalytic activity.

【 授权许可】

CC BY