Temperature dependence of anomalous protonic and superprotonic transport properties in mixed salts based on CsH2PO4
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Otros documentos de la autoría: Andrio, Andreu; Hernández, Saúl Iván; García-Alcántara, Consuelo; Del Castillo, Luis F.; Compañ, Vicente; Santamaria-Holek, I.
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comunitat-uji-handle2:10234/2507
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INVESTIGACIONMetadatos
Título
Temperature dependence of anomalous protonic and superprotonic transport properties in mixed salts based on CsH2PO4Autoría
Fecha de publicación
2019Editor
Royal Society of ChemistryISSN
1463-9076; 1463-9084Cita bibliográfica
SANTAMARIA-HOLEK, I., et al. Temperature Dependence of Anomalous Protonic and Superprotonic Transport Properties in Mixed Salts Based on CsH2PO4. Physical Chemistry Chemical Physics, 2019.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://pubs.rsc.org/en/content/articlelanding/2019/cp/c8cp07472k#!divAbstractVersión
info:eu-repo/semantics/submittedVersionResumen
We present an experimental study and a theoretical interpretation of the temperature dependence of
the transport properties of doped CsH2PO4 salts in both protonic and superprotonic phases. Cesium
phosphate based ... [+]
We present an experimental study and a theoretical interpretation of the temperature dependence of
the transport properties of doped CsH2PO4 salts in both protonic and superprotonic phases. Cesium
phosphate based solid electrolytes are technologically relevant because their operational temperature
range is about 100 to 300 1C in which a superprotonic transition may manifest depending on its mixed
composition. The experimental study was carried out using impedance spectroscopy at the temperature
range of 150–230 1C, and the protonic and superprotonic transport properties and proton concentrations were calculated and analyzed by using the electrode polarization, and the Debye and Cole–Cole
models for the dielectric constant. We have shown that the transport properties predicted by the Cole–
Cole model are consistent with the conductivity measurements whereas the Debye model shows some
inconsistencies. We attribute this to the fact that the Cole–Cole model incorporates the effects of interactions among charge carriers better than the more commonly used Debye model. In this way, our work
shows a more consistent approach to determine the transport properties of solid electrolytes and, therefore, provides a more reliable tool to analyze the transport properties of heterogeneous solid electrolytes that can be used in electrochemical devices, including fuel cells and supercapacitors. [-]
Publicado en
Phys. Chem. Chem. Phys., 2019, 21.Proyecto de investigación
ENE/2015-69203-R, UNAM-DGAPA-PAPIIT-IN116617, IN117419, IA104319, LANCAD-UNAM-DGTIC-276, DGAPA-PAPIIT IG-100618, DGAPA-PAPIIT IN114818Derechos de acceso
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