| People | Locations | Statistics |
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| 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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Gollas, Bernhard
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2023Unveiling the plating-stripping mechanism in aluminum batteries with imidazolium-based electrolytes:A hierarchical model based on experiments and ab initio simulationscitations
- 2023Unveiling the plating-stripping mechanism in aluminum batteries with imidazolium-based electrolytescitations
- 2022Dissolution and electrolysis of lunar regolith in ionic liquidscitations
- 2018The impact of operating conditions on component and electrode development for zinc-air flow batteriescitations
- 2018Mesostructure and physical properties of aqueous mixtures of the ionic liquid 1-ethyl-3-methyl imidazolium octyl sulfate doped with divalent sulfate salts in the liquid and the mesomorphic statescitations
- 2017Tin, bismuth, and tin–bismuth alloy electrodeposition from chlorometalate salts in deep eutectic solventscitations
- 2014Separation of 1,3-substituted imidazoles for quality control of a Lewis acidic ionic liquid for aluminum electroplatingcitations
- 2013Mechanistic Studies of Zinc Electrodeposition from Deep Eutectic Electrolytescitations
- 2011Preparation of CoNi high surface area porous foams by substrate controlled electrodepositioncitations
- 2010Zinc electrodeposition from a deep eutectic system containing choline chloride and ethylene glycolcitations
Places of action
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article
Dissolution and electrolysis of lunar regolith in ionic liquids
Abstract
<p>Oxygen extraction from lunar regolith is one of the key in-situ resource utilization methods required for a permanent human presence on the moon. In this work an electrolysis-based extraction method was investigated, which works with innocuous chemicals and at moderate temperatures. EAC-1 was utilized as lunar regolith simulant and the ionic liquid 1-ethyl-3-methylimidazolium hydrogen sulfate was used as electrolyte. The working principle of this method, which was pioneered by Paley et al.2009, is envisaged as a three step process. First, water is generated by the dissolution of regolith in the Brønsted acidic ionic liquid. This water is electrolyzed, yielding oxygen and hydrogen as an intermediate product. Finally, the ionic liquid is regenerated by anodic oxidation of hydrogen and cathodic reduction of the dissolved metal ions. A gravimetric investigation showed that approximately 30 wt% of EAC-1 can be solubilized, if at least 6 g of ionic liquid are used per gram of EAC-1. Phosphorous oxide was found to be the most soluble compound with 82.0 ± 3.1% of the total amount in solution, followed by MgO, Na<sub>2</sub>O, K<sub>2</sub>O, Al<sub>2</sub>O<sub>3</sub>, iron oxides, TiO<sub>2</sub> and CaO in decreasing order as determined by inductively coupled plasma optical emission spectrometry (ICP-OES). Cyclic voltammetry of the neat ionic liquid revealed that reduction of H<sup>+</sup> is the dominant cathodic reaction of the electrolyte. The cyclic voltammogram of the EAC-1 solution showed a Fe<sup>2+</sup>/Fe<sup>3+</sup> redox peak pair, yet no distinct current, which could be attributed to further reduction of metal ions and electrodeposition. An investigation of the electrode surfaces with SEM and EDX after potential controlled electrolysis experiments at strongly negative cathodic potentials did not reveal any signs of metal deposition and ionic liquid regeneration. Hence, more work is required to enable the ionic liquid regeneration of this oxygen extraction method by either inhibiting the hydrogen evolution reaction in the ionic liquid electrolyte or facilitating metal deposition.</p>