Related Experiment Video
Updated: Aug 27, 2026
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Tuning Graphene Nanostructures for Incorporating Multisized Mo2C Particles as Electrocatalysts for Highly Efficient
Phuoc-Anh Le1, Jen-Yu Chuang1, Ya-Wen Hsu1
1Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan.
Abstract:
This study involves fabricating two graphene nanostructure/multiple-sized Mo2C particles nanocomposites with in situ solution plasma exfoliation as electrocatalysts for highly efficient and stable hydrogen evolution reaction (HER). 3D/0D Graphene onion/Mo2C (GOSMo) and 2D/0D graphene nanosheets/Mo2C (GNSMo) nanocomposites can be generated through solution plasma exfoliation in 1 M H2SO4 and 1 M KOH, respectively. Both GOSMo and GNSMo (wt ratio Mo:C = 55:45) display graphene scaffolds incorporating multiple-sized Mo2C particles with abundant interfacial areas and porosities. The GOSMo sample shows its HER performance hierarchy in the order of 0.5M H2SO4 > 1 M KOH > seawater > phosphate-buffered saline electrolyte, correlating with their charge transfer characteristics. All four cases of GOSMo's HER activities display 100 h stability, indicating its versatility and robustness. The GOSMo sample displays champion HER with an overpotential value of 134 mV at 10 mA cm-2 and a Tafel slope value of 54 mV dec-1. The GOSMo sample's superior HER performances with high stability can be attributed to strong interfacial electronic couplings between Mo2C particles and graphene nanostructures that optimize hydrogen adsorption kinetics. This approach presents a sustainable and facile plasma exfoliation for synthesizing multidimension 3D/0D or 2D/0D of Mo2C/graphene nanocomposite with high HER activity and excellent HER stability.
