| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Rolison, Debra R.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2018Trapping a Ru₂O₃ Corundum-like Structure at Ultrathin, Disordered RuO₂ Nanoskins Expressed in 3D
- 2018(Invited) Nanoscale Design and Modification of Plasmonic Aerogels for Photocatalytic Hydrogen Generation
- 2017Effects of Nanoscale Interfacial Design on Photocatalytic Hydrogen Generation Activity at Plasmonic Au–TiO<sub>2</sub> and Au–TiO<sub>2</sub>/Pt Aerogels
- 2017Demonstrating the Activity and Stability of Conformal RuO<sub>2</sub> "Nanoskins" on Technologically-Relevant, 3D Electrode Suports for Water Oxidation in Acid Electrolyte
- 2017Oxidation−Stable Plasmonic Copper Nanoparticles in Photocatalytic TiO<sub>2</sub> Nanoarchitectures
- 2013Plasmonic enhancement of visible-light water splitting with Au-TiO2 composite aerogels.citations
- 2013Electron Tomography of Gold Nanoparticles in Titania Composite Aerogels: Probing Structure to Understand Photochemistry
Places of action
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article
Demonstrating the Activity and Stability of Conformal RuO<sub>2</sub> "Nanoskins" on Technologically-Relevant, 3D Electrode Suports for Water Oxidation in Acid Electrolyte
Abstract
<jats:p>The commercial viability of many energy-storage and energy conversion devices is compromised by limited efficiency in oxidizing water to generate molecular oxygen (OER). Current state-of-the-art OER anodes fail to meet device-relevant rates of water oxidation at reasonable potentials and suffer from poor stability at the high oxidizing potentials they must adopt to sustain device-relevant O<jats:sub>2</jats:sub> generation. Additionally, the high cost and scarcity of the most promising OER catalysts―RuO<jats:sub>2</jats:sub> and IrO<jats:sub>2</jats:sub>―have motivated the search for electrode designs that deploy a nanoscopic amount of the active material while maintaining activity and stability. Most thin film preparations of IrO<jats:sub>2</jats:sub> and RuO<jats:sub>2</jats:sub> are not amenable with insulating supports and/or non–line of sight geometries. We leverage our solution-based electroless synthetic protocol to deposit conformal, ultrathin films of RuO<jats:sub>2</jats:sub> (“nanoskins”) on three-dimensional supports and benchmark their activity under device-relevant conditions. When a self-wired RuO<jats:sub>2</jats:sub> thin film is expressed as a nanoshell around the fibers in commercially available SiO<jats:sub>2</jats:sub> paper, RuO<jats:sub>2</jats:sub>@SiO<jats:sub>2</jats:sub> electrodes exhibit current densities (10 mA cm<jats:sup>–2</jats:sup> @ η=280) 25-times higher than when expressed on planar, conductive supports. By wrapping the fibers with conductive graphitic carbon before nanoskin deposition, we retain the high specific activity of RuO<jats:sub>2</jats:sub> nanoskins (40–60 mA mg<jats:sup>–1</jats:sup> @ η=330 mV) and preserve the desirable macroscale properties of SiO<jats:sub>2</jats:sub> fiber paper: porous, lightweight, flexible, and inexpensive. By efficiently expressing the electrocatalyst, we innately restrict the oxidizing potentials needed to meet a given rate of water oxidation, which diminishes dissolution of the catalyst and corrosion of its underlying current collector, thereby extending anode lifetime. </jats:p><jats:p></jats:p>