Protonic Conduction of Partially-Substituted CsH2PO4 and the Applicability in Electrochemical Devices
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Otros documentos de la autoría: Navarrete, Laura; Andrio, Andreu; Escolástico, Sonia; Moya, Sergio; Compañ, Vicente; Serra, José M.
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
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Título
Protonic Conduction of Partially-Substituted CsH2PO4 and the Applicability in Electrochemical DevicesAutoría
Fecha de publicación
2019Editor
MDPIISSN
2077-0375; 2077-0375Cita bibliográfica
NAVARRETE, Laura, et al. Protonic Conduction of Partially-Substituted CsH2PO4 and the Applicability in Electrochemical Devices. Membranes, 2019, vol. 9, no 4, p. 49.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.mdpi.com/2077-0375/9/4/49Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
CsH2PO4 is a proton conductor pertaining to the acid salts group and shows a phase
transition from monoclinic to cubic phase at 232 ± 2
◦C under high-steam atmospheres (>30%).
This cubic phase gives rise to the ... [+]
CsH2PO4 is a proton conductor pertaining to the acid salts group and shows a phase
transition from monoclinic to cubic phase at 232 ± 2
◦C under high-steam atmospheres (>30%).
This cubic phase gives rise to the so-called superprotonic conductivity. In this work, the influence of
the partial substitution of Cs by Ba and Rb, as well as the partial substitution of P by W, Mo, and S in
CsH2PO4 on the phase transition temperature and electrochemical properties is studied. Among the
tested materials, the partial substitution by Rb led to the highest conductivity at high temperature.
Furthermore, Ba and S-substituted salts exhibited the highest conductivity at low temperatures.
CsH2PO4 was used as electrolyte in a fully-assembled fuel cell demonstrating the applicability of the
material at high pressures and the possibility to use other materials (Cu and ZnO) instead of Pt as
electrode electrocatalyst. Finally, an electrolyzer cell composed of CsH2PO4 as electrolyte, Cu and
ZnO as cathode and Pt and Ag as anode was evaluated, obtaining a stable production of H2 at 250 ◦C. [-]
Publicado en
Membranes 2019, 9, 49Proyecto de investigación
SEV-2016-0683, ENE2014-57651Derechos de acceso
info:eu-repo/semantics/openAccess
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