Surface Hydrogen Coverage on Pt/Graphene Measured by Carbon Ion ERDA

TL;DR

This study uses ERDA to measure hydrogen coverage on Pt-decorated graphene, providing insights into its potential for hydrogen storage applications.

Contribution

It introduces an experimental ERDA method to quantify hydrogen on Pt/graphene, advancing understanding of hydrogen adsorption in 2D materials.

Findings

Hydrogen depth profile obtained via ERDA

Quantitative analysis of hydrogen coverage on Pt/graphene

Insights into hydrogen storage behavior in 2D materials

Abstract

Graphene, a two-dimensional monolayer of sp2-bonded carbon atoms in a honeycomb lattice, possesses exceptional electronic, mechanical, and quantum properties, making it highly attractive for energy storage, spintronics, and microelectronics. Functionalizing graphene with platinum (Pt) adatoms can further enhance its properties, particularly for hydrogen storage applications. In this study, we experimentally investigate hydrogen adsorption on Pt-decorated graphene using Elastic Recoil Detection Analysis (ERDA). By irradiating the Pt/graphene film with a 4.1 MeV C2+ ion beam and detecting recoiled hydrogen atoms at a 30 degree scattering angle, we obtain the hydrogen depth profile, providing critical insights into its storage behavior.