Tuning Graphene Nanostructures for Incorporating Multisized Mo 2 C Particles as Electrocatalysts for Highly Efficient and Stable Hydrogen Evolution Reaction
Year: 2026
Type: article
Abstract: This study involves fabricating two graphene nanostructure/multiple‐sized Mo 2 C particles nanocomposites with in situ solution plasma exfoliation as electrocatalysts for highly efficient and stable hydrogen evolution reaction (HER). 3D/0D Graphene onion/Mo 2 C (G OS Mo) and 2D/0D graphene nanosheets/Mo 2 C (G NS Mo) nanocomposites can be generated through solution plasma exfoliation in 1 M H 2 SO 4 and 1 M KOH, respectively. Both G OS Mo and G NS Mo (wt ratio Mo:C = 55:45) display graphene scaffolds incorporating multiple‐sized Mo 2 C particles with abundant interfacial areas and porosities. The G OS Mo sample shows its HER performance hierarchy in the order of 0.5M H 2 SO 4 > 1 M KOH > seawater > phosphate‐buffered saline electrolyte, correlating with their charge transfer characteristics. All four cases of G OS Mo’s HER activities display 100 h stability, indicating its versatility and robustness. The G OS Mo 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 G OS Mo sample’s superior HER performances with high stability can be attributed to strong interfacial electronic couplings between Mo 2 C 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 Mo 2 C/graphene nanocomposite with high HER activity and excellent HER stability.
Source: ChemSusChem
DOI: 10.1002/cssc.71011
Authors: Phuoc‐Anh Le, Jen‐Yu Chuang, Ya‐Wen Hsu, Kung‐Hwa Wei
Institution: National Yang Ming Chiao Tung University
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,550
Awards: G122158006, G1710992156, Understanding the Mechanism and Origin of Enhanced Activity Using Ruthenium Nanoparticle Catalysts for Ammonia Production: a Machine Learning-Enhanced Dft Study, G1850132029, G3001278201, Low-Carbon Hydrogen Energy Carrier Design: Mechanistic Understanding, Descriptor Development and Integrated Web-Based Vi Sual Database Platform, Nstc-Bmbf Joint Research Program on Green Hydrogen-Green Hydrogen Production from Sea Water( I ), G6504691384, G6761185126, Molecular Engineering of Thiophene/Selenophene Π-Bridge Architectures and Branched Side Chains in Polymer Acceptors for Enhanced Efficiency and Stability in All-Polymer Solar Cells, G8240329340, Polyol, Hydrothermal and Plasma Exfoliating to Produce Transition Metal Dichalcogenides/Graphene Ternary Nanocomposites as Electrocatalysts for Hydrogen Evolution Reaction, G8772913211
OpenAlex ID: W7204242830