Nejc Hodnik, Primož Jovanovič
The dissolution behaviors of Ru and ruthenium oxide nanoparticles in acidic media were studied for the first time using highly sensitive in situ measurements of concentration by inductively coupled plasma mass spectrometry (ICP-MS). Online time- and potential-resolved electrochemical dissolution profiles revealed novel corrosion features in the potential window from 0 to ∼1.4 V, reflecting severe dissolution due to the oxygen evolution reaction (OER). It was found that an as-synthesized Ru sample exhibited a significantly higher dissolution rate than an electrochemically oxidized amorphous Ru sample, which dissolved roughly 10 times faster than rutile RuO2. The observed OER activity inversely correlated with the measured dissolution, indicating a discrepancy with the general assumption that OER onset coincides with Ru dissolution onset. Notably, Ru dissolution occurred at approximately 0.17 V lower potentials than the OER across all samples. These findings provide critical insights applicable to various energy conversion devices, including proton-exchange membrane electrolyzers, low-temperature fuel cells, and photocatalysts utilizing Ru as an active component.
@article{f6674a3b-e17d-444c-b5bc-48c88f9abaf2,
title={New Insights into Corrosion of Ruthenium and Ruthenium Oxide Nanoparticles in Acidic Media},
author={Nejc Hodnik and Primož Jovanovič},
year={2023},
language={en}
}TY - JOUR TI - New Insights into Corrosion of Ruthenium and Ruthenium Oxide Nanoparticles in Acidic Media AU - Nejc Hodnik AU - Primož Jovanovič PY - 2023 LA - en ER -
G.Oyungerel, G.Batdemberel
Particle sizes and their distributions of aerosols along the road in Ulaanbaatar city were studied by Photon Cross Correlation Spectroscopy (PCCS) NAN
This paper addresses the challenge of assessing the feasibility of wind power plant projects at sites with insufficient or no local historic wind data
Stevan Dimitrijević, Michele Miliciani, Silvana Dimitrijević, Milisav Ranitović, Željko Kamberović
Silver nitrate in the solution was reduced in the presence of the dispersants by ascorbic acid, and silver particles were generated. The main goal was
Important advances in electrochemical engineering technology over the last three decades have fostered the development of a lternative methods to alle