Observation of charge transfer cascades in α-Fe2O3/IrOxphotoanodes by operando X-ray absorption spectroscopy

2017 ◽  
Vol 19 (8) ◽  
pp. 5715-5720 ◽  
Author(s):  
Alessandro Minguzzi ◽  
Alberto Naldoni ◽  
Ottavio Lugaresi ◽  
Elisabetta Achilli ◽  
Francesco D'Acapito ◽  
...  

1990 ◽  
Vol 210 ◽  
Author(s):  
C. Lévy-Clèment ◽  
C. Mondoloni ◽  
C. Godart ◽  
R. Cortès

AbstractThis paper presents applications of in situ X-ray diffraction and absorption techniques to the study of H+/MnO2 alkaline batteries. The two complementary in situ techniques are described. Investigation of the electrochemical insertion and deinsertion of H+ has been made through its influence on the evolution of the crystallographic structure of γ-MnO2, while investigation of the transfer of e has been undertaken through the variation of the oxidation state of the manganese during the discharging and charging process of a battery. New insights in the understanding of the mechanisms of proton insertion and charge transfer into γ-MnO2 are discussed.





2008 ◽  
Vol 10 (38) ◽  
pp. 5882 ◽  
Author(s):  
Sébastien Bonhommeau ◽  
Niko Pontius ◽  
Saioa Cobo ◽  
Lionel Salmon ◽  
Frank M. F. de Groot ◽  
...  


2014 ◽  
Vol 16 (15) ◽  
pp. 7031-7036 ◽  
Author(s):  
Yu̅suke Nanba ◽  
Daisuke Asakura ◽  
Masashi Okubo ◽  
Haoshen Zhou ◽  
Kenta Amemiya ◽  
...  

The electronic structure of Na2[Fe(CN)5NO]·2H2O (sodium nitroprusside: SNP) was investigated by using soft X-ray absorption (XA) spectroscopy and a configuration-interaction full-multiplet calculation for the [Fe(CN)5NO]2−cluster model.



2019 ◽  
Vol 10 (14) ◽  
pp. 3843-3848 ◽  
Author(s):  
Jian Ren ◽  
Demetra S. Achilleos ◽  
Ronny Golnak ◽  
Hayato Yuzawa ◽  
Jie Xiao ◽  
...  


2009 ◽  
Vol 79 (4) ◽  
Author(s):  
C. Gougoussis ◽  
M. Calandra ◽  
A. Seitsonen ◽  
Ch. Brouder ◽  
A. Shukla ◽  
...  


2000 ◽  
Vol 87 (3) ◽  
pp. 1312-1317 ◽  
Author(s):  
Y. K. Chang ◽  
K. P. Lin ◽  
W. F. Pong ◽  
M.-H. Tsai ◽  
H. H. Hseih ◽  
...  


2002 ◽  
Vol 09 (02) ◽  
pp. 1327-1331 ◽  
Author(s):  
TOMOHIRA MATSUSHITA ◽  
MASAICHIRO MIZUMAKI ◽  
NAOSHI IKEDA ◽  
MAKOTO NAKAZAWA ◽  
AKANE AGUI ◽  
...  

We have performed Co 2p X-ray absorption spectroscopy (XAS) on a mixed valence hexagonal layered system NaCo 2 O 4, which shows large thermopower and metallic conductivity. We also measured XAS for SrCoO 3 and LaCoO 3 as examples of typical Co ionic states. The Co ions of the last two materials are octahedrally surrounded by oxygen atoms. A Co atom in NaCo 2 O 4 also has octahedral coordination with oxygen atoms but it is distorted slightly. The Co ions in SrCoO 3 and LaCoO 3 are in the d5 and d6 configuration respectively. The spectrum of NaCo 2 O 4 resembles that of LaCoO 3 rather than that of SrCoO 3; the Co ions in NaCo 2 O 4 can be regarded as the d6 configuration. Also, we have tried to calculate the XAS spectra by using the charge-transfer multiplet model (CT-M). Although we could not find out the best-fitting parameters, the results suggested the itinerancy of the Co 3d states.



Nano Letters ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1729-1734
Author(s):  
Jacopo Stefano Pelli Cresi ◽  
Emiliano Principi ◽  
Eleonora Spurio ◽  
Daniele Catone ◽  
Patrick O’Keeffe ◽  
...  


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