scholarly journals Revisiting the Sodiation Mechanism of TiO2 via Operando X-ray Absorption Spectroscopy

2020 ◽  
Vol 10 (16) ◽  
pp. 5547
Author(s):  
Marcus Fehse ◽  
Aurélien Henry ◽  
Andrea Zitolo ◽  
Bruno Boury ◽  
Nicolas Louvain ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Local Structure ◽  
Maximum Amount ◽  
Data Set ◽  
Anatase Structure ◽  
X Ray ◽  
Tio2 Anatase ◽  
Meaningful Information ◽  
X Ray Absorption ◽  
Chemometric Tools

The sodiation mechanism of TiO2 anatase was thoroughly investigated via X-ray absorption spectroscopy under operando conditions. The data set was analysed via an innovative and smart approach based on chemometric tools that allows the unbiased and reliable extraction of the maximum amount of meaningful information. The resulting data analysis reveals that the electrochemical sodiation mechanism is mainly based on the reduction of Ti4+ to Ti3+, going along with the irreversible amorphisation of the pristine anatase structure. At least one semi-amorphous intermediate is formed during the first discharge, whose local structure resembles those obtained at the end of the charge.

Application of In Situ X-ray Absorption Spectroscopy to Study Dilute Chromium Ions in a Molten Chloride Salt

2019 ◽  
Author(s):  
Jisue Moon ◽  
Carter Abney ◽  
Dmitriy Dolzhnikov ◽  
James M. Kurley ◽  
Kevin A. Beyer ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Local Structure ◽  
Chloride Salt ◽  
X Ray ◽  
Molten Chloride ◽  
Stable Species ◽  
Higher Temperature ◽  
Cr Concentration ◽  
X Ray Absorption

The local structure of dilute CrCl<sub>3</sub> in a molten MgCl<sub>2</sub>:KCl salt was investigated by <i>in situ</i> x-ray absorption spectroscopy (XAS) at temperatures from room temperature to 800<sup>o</sup>C. This constitutes the first experiment where dilute Cr speciation is explored in a molten chloride salt, ostensibly due to the compounding challenges arising from a low Cr concentration in a matrix of heavy absorbers at extreme temperatures. CrCl<sub>3</sub> was confirmed to be the stable species between 200 and 500<sup>o</sup>C, while mobility of metal ions at higher temperature (>700<sup>o</sup>C) prevented confirmation of the local structure.

Chemical State and Local Structure around Titanium Atoms in NaAlH4Doped with TiCl3Using X-ray Absorption Spectroscopy

2004 ◽  
Vol 108 (42) ◽  
pp. 16372-16376 ◽  
Author(s):  
Aline Léon ◽  
Oliver Kircher ◽  
Jörg Rothe ◽  
Maximilian Fichtner
Keyword(s):  
Absorption Spectroscopy ◽  
Local Structure ◽  
Chemical State ◽  
X Ray ◽  
State And Local ◽  
X Ray Absorption

Local structure of Fe in Fe-doped misfit-layered calcium cobaltite: An X-ray absorption spectroscopy study

2013 ◽  
Vol 204 ◽  
pp. 257-265 ◽  
Author(s):  
Natkrita Prasoetsopha ◽  
Supree Pinitsoontorn ◽  
Atipong Bootchanont ◽  
Pinit Kidkhunthod ◽  
Pornjuk Srepusharawoot ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Local Structure ◽  
Spectroscopy Study ◽  
X Ray ◽  
X Ray Absorption

Local structure ofBaBixPb1−xO3determined by x-ray-absorption spectroscopy

1991 ◽  
Vol 44 (13) ◽  
pp. 6961-6972 ◽  
Author(s):  
J. B. Boyce ◽  
F. G. Bridges ◽  
T. Claeson ◽  
T. H. Geballe ◽  
G. G. Li ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Local Structure ◽  
X Ray ◽  
X Ray Absorption

Local structure investigations of Sn and Mn doped in β-Ga2O3 by X-ray absorption spectroscopy

2021 ◽  
pp. 126223
Author(s):  
H. Arima-Osonoi ◽  
K. Yamazaki ◽  
R. Simura ◽  
T. Sugawara ◽  
K. Yubuta ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Local Structure ◽  
X Ray ◽  
Structure Investigations ◽  
X Ray Absorption ◽  
Mn Doped

Local structure around Fe ions on multiferroic Pb(Fe1/2Nb1/2)O3 ceramics probed by x-ray absorption spectroscopy

2012 ◽  
Vol 100 (17) ◽  
pp. 172907 ◽  
Author(s):  
A. Mesquita ◽  
B. M. Fraygola ◽  
V. R. Mastelaro ◽  
J. A. Eiras
Keyword(s):  
Absorption Spectroscopy ◽  
Local Structure ◽  
X Ray ◽  
X Ray Absorption ◽  
Fe Ions

Local Structure and Electronic States of Li(Mn2-xCox)O4Studied by X-ray Absorption Spectroscopy

2002 ◽  
Vol 49 (5) ◽  
pp. 841-850 ◽  
Author(s):  
C. H. Shen ◽  
R. S. Liu ◽  
L.-Y. Jang ◽  
J. F. Lee ◽  
J. M. Chen
Keyword(s):  
Absorption Spectroscopy ◽  
Local Structure ◽  
Electronic States ◽  
X Ray ◽  
X Ray Absorption

Local structure of Co- and Fe-substitutedYBa2Cu3O7−δstudied by x-ray-absorption spectroscopy

1993 ◽  
Vol 47 (18) ◽  
pp. 12110-12125 ◽  
Author(s):  
G. G. Li ◽  
F. Bridges ◽  
J. B. Boyce ◽  
W. C. H. Joiner
Keyword(s):  
Absorption Spectroscopy ◽  
Local Structure ◽  
X Ray ◽  
X Ray Absorption
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