New Insights into Corrosion of Ruthenium and Ruthenium Oxide Nanoparticles in Acidic Media

By N. Hodnik, P. Jovanovič, A. Pavlišič, Barbara Jozinović, M. Zorko, M. Bele, V. Šelih, Martin Šala, S. Hočevar, M. Gaberšček. 2015

217 citations recorded by the source corpus.

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 (signals) in the potential window from 0 to ∼1.4 V, where known severe dissolution due to the oxygen evolution reaction (OER) takes place. Most of the features follow the thermodynamic changes of the Ru oxidation/reduction state, which consequently trigger so-called transient dissolution. An as-synthesized Ru sample was found to exhibit an order-of-magnitude higher dissolution rate than an electrochemically oxidized amorphous Ru sample. The latter, in turn, dissolved about 10 times faster than rutile RuO2. The observed OER activity was in an inverse relationship with the measured dissolution. Disagreement was found with the general assumption that the onset of the OER sho...

Subfields: Electrical and Electronic Engineering, Electrochemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/fb50f75c66dac2c43afbf2174c8ffab9a09e96a6

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In Electrical and Electronic Engineering

1. Jean-Marie Tarascon
2. A. Grimaud
3. M. Doublet
4. Haotian Wang
5. Matthieu Saubanère
6. Zhen-Yu Wu
7. Zachary Adler
8. Feng-Yang Chen

In Renewable Energy, Sustainability and the Environment

1. Zhen-Yu Wu
2. Zachary Adler
3. Haotian Wang
4. Feng-Yang Chen
5. Jean-Marie Tarascon
6. A. Grimaud

Citations in the corpus

• Stability challenges of electrocatalytic oxygen evolution reaction: From mechanistic understanding to reactor design (2021, background): “23 V).(65,66) This indicates that the catalytic instability can be induced by the surface oxidation and reduction processes of the catalysts but not necessary only by the oxygen evolving process.”
• Activation of surface oxygen sites on an iridium-based model catalyst for the oxygen evolution reaction (2016, background): “19,34,35 Therefore this catalyst won’t be further studied.”