Platinum‐Decorated Laser‐Induced Graphene Electrodes: Optimizing Hydrogen Evolution Reaction Catalysis through Minimal Platinum Loading
Source abstract
Abstract
The hydrogen evolution reaction (HER)represents a cornerstone process for sustainable hydrogen production. This study explores laser‐induced graphene (LIG) electrodes doped with platinum (Pt) nanoclusters deposited via magnetron sputtering, focusing on the relationship between deposition time, structural changes, and catalytic activity. The electrodes demonstrate superior HER performance, with Pt@LIG60s achieving an overpotential of 116 mV at −10 mA cm –2 and a mass activity of 14 A mg –1 at 100 mV, outperforming commercial Pt/C catalysts. Raman spectroscopy reveals an optimal defect density (I D /I G ≈ 1.17) and enhanced Pt‐LIG interactions at 60 s of deposition. XPS analysis confirms the presence of Pt 2+ species strongly anchored to LIG defect sites, facilitating efficient hydrogen adsorption and desorption. This study highlights the potential of minimal Pt loading on LIG substrates for cost‐effective and high efficiency HER catalysis.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Laser-Ablation Synthesis of Nanoparticles · Advanced Photocatalysis Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Nanotechnology Northeast Strategic Technologies Center (CETENE) Recife Pernambuco 50670–901 Brazil
School of Chemistry University of Nottingham Nottingham NG7 2RD UK
Fundamental Chemistry Department Universidade Federal de Pernambuco (UFPE) Recife Pernambuco 50670–901 Brazil
Institute of Physics Universidade Federal do Rio Grande do Sul (UFRGS) Porto Alegre Rio Grande do Sul 91501–970 Brazil
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