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Role of spinodal-like wrinkling as a prenucleation process in crystallization of sol-gel derived thin films
Matjaž Valant, Mattia Fanetti, Uroš Luin, 2016, original scientific article

Found in: osebi
Keywords: sol-gel, tanki filmi, crystalizacija
Published: 17.05.2016; Views: 3206; Downloads: 0
.pdf Fulltext (1,49 MB)

Delovno poročilo za prvo tromesečje eGEM projekta
Matjaz Valant, Uroš Luin, final research report

Found in: osebi
Keywords: energetika, shranjevanje energije, elektroliza
Published: 23.09.2019; Views: 1734; Downloads: 0
.pdf Fulltext (707,01 KB)

Electrolysis of Highly Concentrated FeCl2 Solution for Energy Storage in Solid Matter
Uroš Luin, 2020, published scientific conference contribution abstract

Found in: osebi
Keywords: Energy storage, FeCl2(aq) electrolysis
Published: 11.12.2020; Views: 932; Downloads: 0
.pdf Fulltext (22,13 MB)

Structure and population of complex ionic species in FeCl[sub]2 aqueous solution by X-ray absorption spectroscopy
Matjaž Valant, Iztok Arčon, Uroš Luin, 2022, original scientific article

Abstract: Technologies for mass production require cheap and abundant materials such as ferrous chloride (FeCl2). The literature survey shows the lack of experimental studies to validate theoretical conclusions related to the population of ionic Fe-species in the aqueous FeCl2 solution. Here, we present an in situ X-ray absorption study of the structure of the ionic species in the FeCl2 aqueous solution at different concentrations (1–4 molL−1) and temperatures (25–80 ◦C). We found that at low temperature and low FeCl2 concentration, the octahedral first coordination sphere around Fe is occupied by one Cl ion at a distance of 2.33 (±0.02) Å and five water molecules at a distance of 2.095 (±0.005) Å. The structure of the ionic complex gradually changes with an increase in temperature and/or concentration. The apical water molecule is substituted by a chlorine ion to yield a neutral Fe[Cl2(H2O)4]0. The observed substitutional mechanism is facilitated by the presence of the intramolecular hydrogen bonds as well as entropic reasons. The transition from the single charged Fe[Cl(H2O)5]+ to the neutral Fe[Cl2(H2O)4]0 causes a significant drop in the solution conductivity, which well correlates with the existing conductivity models.
Found in: osebi
Keywords: structure, population, ionic species, aqueous ferrous chloride, in situ X-ray absorption spectroscopy
Published: 24.01.2022; Views: 78; Downloads: 1
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