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8. Towards electrochemical iridium recycling in acidic media

Author

Moriau, Leonard, Stojanovski, Kevin, Jovanovič, Primož, EscaleraLópez, Daniel, Cherevko, Serhiy, and Hodnik, Nejc

Subjects
korozija, iridij, raztapljanje, udc:544.5/.6, elektroliti, elektrokemija, elektrokemija, plemenite kovine, iridij, elektroliti, korozija, raztapljanje, plemenite kovine
Abstract

Nasl. z nasl. zaslona. Opis vira z dne 3. 4. 2023. Bibliografija: str. 7986-7987. Abstract.

Published
2023

12. Corrigendum to “Observing, tracking and analysing electrochemically induced atomic-scale structural changes of an individual Pt-Co nanoparticle as a fuel cell electrocatalyst by combining modified floating electrode and identical location electron microscopy” [Electrochimica Acta 388 (2021) 138513]

Author

Hrnjic, Armin, Kamšek, Ana Rebeka, Pavlišič, Andraž, Šala, Martin, Bele, Marjan, Moriau, Leonard, Gatalo, Matija, Ruiz-Zepeda, Francisco, Jovanovič, Primož, and Hodnik, Nejc

Published
2022
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13. The Importance of Chemical Activation and the Effect of Low Operation Voltage on the Performance of Pt-alloy Fuel Cell Electrocatalysts

Author

Gatalo, Matija, primary, Martinez Bonastre, Alejandro, additional, Moriau, Leonard-Jean, additional, Burdett, Harriet, additional, Ruiz-Zepeda, Francisco, additional, Hughes, Edwin, additional, Hodgkinson, Adam, additional, Šala, Martin, additional, Pavko, Luka, additional, Bele, Marjan, additional, Hodnik, Nejc, additional, Sharman, Jonathan, additional, and Gaberšček, Miran, additional

Published
2022
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14. Understanding the Crucial Significance of the Temperature and Potential Window on the Stability of Carbon Supported Pt-Alloy Nanoparticles as Oxygen Reduction Reaction Electrocatalysts

Author

Đukić, Tina, primary, Moriau, Leonard Jean, additional, Pavko, Luka, additional, Kostelec, Mitja, additional, Prokop, Martin, additional, Ruiz-Zepeda, Francisco, additional, Šala, Martin, additional, Dražić, Goran, additional, Gatalo, Matija, additional, and Hodnik, Nejc, additional

Published
2021
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16. Nano-Engineering of High Performance Pt-Alloy Intermetallics

Author

Gatalo, Matija, primary, M. Bonastre, Alejandro, additional, Moriau, Leonard Jean, additional, Burdett, Harriet, additional, Ruiz-Zepeda, Francisco, additional, Hughes, Edwin, additional, Hodgkinson, Adam, additional, Šala, Martin, additional, Pavko, Luka, additional, Bele, Marjan, additional, Hodnik, Nejc, additional, Sharman, Jonathan, additional, and Gaberscek, Miran, additional

Published
2021
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17. Electrochemical Stability and Degradation of Commercial Pd/C Catalyst in Acidic Media

Author

Smiljanić, Milutin Lj., Bele, Marjan, Moriau, Leonard, Ruiz-Zepeda, Francisco, Šala, Martin, Hodnik, Nejc, Smiljanić, Milutin Lj., Bele, Marjan, Moriau, Leonard, Ruiz-Zepeda, Francisco, Šala, Martin, and Hodnik, Nejc

Abstract

Palladium has attracted significant attention as a catalyst or co-catalyst for many electrochemical reactions in energy conversion devices. We have studied electrochemical stability of a commercial Pd/C sample in an acidic electrolyte by exposing it to an accelerated stress test (AST) to mimic potential spikes in fuel cells and electrolyzers during start/stop events. AST consisted of extensive rapid potential cycling (5000 cycles, 1 V/s) in two potential regions, namely AST1 was performed between 0.4 and 1.4 VRHE, while AST2 was performed between 0.05 and 1.4 VRHE. Degradation of Pd/C was monitored by the changes in Pd electrochemical surface area, while the hydrogen evolution reaction (HER) was used as a test reaction to observe the corresponding impact of the degradation on the activity of Pd/C. Significant Pd/C degradation and HER activity loss were observed in both potential regions. Coupling of the electrochemical flow cell with an inductively coupled plasma mass spectrometry device showed substantial Pd dissolution during both ASTs. Identical location scanning electron microscopy revealed that Pd dissolution is followed by redeposition during both ASTs, resulting in particle size growth. Particle size growth was seen as especially dramatic in the case of AST2, when particularly large Pd nanostructures were obtained on top of the catalyst layer. According to the results presented in this work, (in)stability of Pd/C and other Pd-based nanocatalysts should be studied systematically as it may present a key factor limiting their application in energy conversion devices.

Published
2021

18. Effect of the Morphology of the High-Surface-Area Support on the Performance of the Oxygen-Evolution Reaction for Iridium Nanoparticles

Author

Moriau, Leonard, primary, Bele, Marjan, additional, Marinko, Živa, additional, Ruiz-Zepeda, Francisco, additional, Koderman Podboršek, Gorazd, additional, Šala, Martin, additional, Šurca, Angelja Kjara, additional, Kovač, Janez, additional, Arčon, Iztok, additional, Jovanovič, Primož, additional, Hodnik, Nejc, additional, and Suhadolnik, Luka, additional

Published
2020
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21. Resolving the Dilemma of Nanoparticles’ Structure-Property Relationships at the Atomic Level: Case Study of Pt-Based PEM Fuel Cell Oxygen Reduction Electrocatalysts

Author

Moriau, Leonard Jean, primary, Gatalo, Matija, additional, Hrnjić, Armin, additional, Pavlišič, Andraž, additional, Kamšek, Ana Rebeka, additional, Petek, Urša, additional, Ruiz-Zepeda, Francisco, additional, Šala, Martin, additional, Pavko, Luka, additional, Šelih, Vid Simon, additional, Bele, Marjan, additional, Jovanovič, Primož, additional, and Hodnik, Nejc, additional

Published
2020
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22. Towards Stable and Conductive Titanium Oxynitride High‐Surface‐Area Support for Iridium Nanoparticles as Oxygen Evolution Reaction Electrocatalyst

Author

Bele, Marjan, primary, Stojanovski, Kevin, additional, Jovanovič, Primoz, additional, Moriau, Leonard, additional, Koderman Podboršek, Gorazd, additional, Moškon, Jože, additional, Umek, Polona, additional, Sluban, Melita, additional, Dražič, Goran, additional, Hodnik, Nejc, additional, and Gaberšček, Miran, additional

Published
2019
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23. Front Cover: Towards Stable and Conductive Titanium Oxynitride High‐Surface‐Area Support for Iridium Nanoparticles as Oxygen Evolution Reaction Electrocatalyst (ChemCatChem 20/2019)

Author

Bele, Marjan, primary, Stojanovski, Kevin, additional, Jovanovič, Primoz, additional, Moriau, Leonard, additional, Koderman Podboršek, Gorazd, additional, Moškon, Jože, additional, Umek, Polona, additional, Sluban, Melita, additional, Dražič, Goran, additional, Hodnik, Nejc, additional, and Gaberšček, Miran, additional

Published
2019
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