scholarly journals Combined operando X-ray diffraction–electrochemical impedance spectroscopy detecting solid solution reactions of LiFePO4 in batteries

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Michael Hess ◽  
Tsuyoshi Sasaki ◽  
Claire Villevieille ◽  
Petr Novák
Keyword(s):  
Solid Solution ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals Correlation between Electrochemical Impedance Spectroscopy and Structural Properties of Amorphous Tunisian Metanacrite Synthetic Material

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Nouha Jaafar ◽  
Hafsia Ben Rhaiem ◽  
Abdessalem Ben Haj Amara
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Electronic Conduction ◽  
X Ray Diffraction ◽  
Synthetic Material ◽  
X Ray ◽  
Synthetic Product ◽  
Transmission Electron ◽  
Semiconductor Behavior

In the present work, we report the structural and electrochemical properties of metanacrite. Metanacrite is a synthetic material originated by heating (550°C) of a clay mineral (Tunisian nacrite) belonging to the kaolin group. The structure of the amorphous synthetic product was corroborated by X-ray diffraction (disappearing of nacrite peaks) and infrared spectroscopy (disappearing of Al–OH and water bands). The decomposition of the silicate framework was confirmed by transmission electron microscope (TEM). The obtained metanacrite synthetic material was also examined by electrochemical impedance spectroscopy (EIS). Accordingly, the electronic conduction is followed by the correlated barrier hopping (C.B.H.) model. Therefore, by combining ac and dc electrical conductivity, a semiconductor behavior is evidenced. The dependence of the dielectric constant (ε′) and dielectric loss (ε″) on both temperature and frequency is also discussed.

Na4Co3(PO4)2P2O7 through Correlative Operando X-ray Diffraction and Electrochemical Impedance Spectroscopy

2019 ◽  
Vol 31 (14) ◽  
pp. 5152-5159 ◽  
Author(s):  
Maider Zarrabeitia ◽  
María Jáuregui ◽  
Neeraj Sharma ◽  
James C. Pramudita ◽  
Montse Casas-Cabanas
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
X Ray Diffraction ◽  
X Ray
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