Electrical conduction of palladium-decorated multi-layered graphene oxide effected by hydrogen dissociation
Artikel i vetenskaplig tidskrift, 2015

Multi-layered graphene oxide (MGO) and palladium-decorated MGO (PdGO) are electrically evaluated as a function of H-2 pressure up to 20 bar to elucidate an interaction between molecular hydrogen and PdGO. As H-2 pressure increases, the electrical conductance (G) of MGO also increases while that of PdGO decreases. Using atomic force microscopy, X-ray photoelectron spectroscopy, and Fourier transform-infrared spectroscopy analysis, we found that MGO reduction due to H-2 accounts for the increase in G of the MGO. For PdGO, an increase of OH groups was observed, which shows that PdGO was oxidized when exposed to high H-2 pressure. The PdGO oxidation can be explained by a hydrogen spillover effect and the decrease of G may be due to this behavior.

Hydrogen dissociation

Pd decoration

Electrical conductance

Multi-layered graphene oxide


S. J. Baek

Seoul National University

W. G. Hong

Korea Basic Science Institute

M. Park

Seoul National University

Tord Claeson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

H. J. Kim

Korea Basic Science Institute

B. H. Kim

Incheon National University

YungWoo Park

Seoul National University

Synthetic Metals

0379-6779 (ISSN)

Vol. 199 74-78


Textil-, gummi- och polymermaterial