Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/112118
Title: Materials AIILnInO4 with Ruddlesden-Popper Structure for Electrochemical Applications: Relationship between Ion (oxygen-ion, proton) Conductivity, Water Uptake, and Structural Changes
Authors: Tarasova, N.
Animitsa, I.
Issue Date: 2022
Publisher: MDPI
MDPI AG
Citation: Tarasova N. Materials AIILnInO4 with Ruddlesden-Popper Structure for Electrochemical Applications: Relationship between Ion (oxygen-ion, proton) Conductivity, Water Uptake, and Structural Changes / N. Tarasova, I. Animitsa // Materials. — 2022. — Vol. 15. — Iss. 1. — 114.
Abstract: In this paper, the review of the new class of ionic conductors was made. For the last several years, the layered perovskites with Ruddlesden-Popper structure AIILnInO4 attracted attention from the point of view of possibility of the realization of ionic transport. The materials based on Ba(Sr)La(Nd)InO4 and the various doped compositions were investigated as oxygen-ion and proton conductors. It was found that doped and undoped layered perovskites BaNdInO4, SrLaInO4, and BaLaInO4 demonstrate mixed hole-ionic nature of conductivity in dry air. Acceptor and donor doping leads to a significant increase (up to ~1.5–2 orders of magnitude) of conductivity. One of the most conductive compositions BaNd0.9Ca0.1InO3.95 demonstrates the conductivity value of 5∙10−4 S/cm at 500 °C under dry air. The proton conductivity is realized under humid air at low (<500 °C) temperatures. The highest values of proton conductivity are attributed to the compositions BaNd0.9Ca0.1InO3.95 and Ba1.1La0.9InO3.95 (7.6∙10−6 and 3.2∙10−6 S/cm correspondingly at the 350 °C under wet air). The proton concentration is not correlated with the concentration of oxygen defects in the structure and it increases with an increase in the unit cell volume. The highest proton conductivity (with 95−98% of proton transport below 400 °C) for the materials based on BaLaInO4 was demonstrated by the compositions with dopant content no more that 0.1 mol. The layered perov-skites AIILnInO4 are novel and prospective class of functional materials which can be used in the different electrochemical devices in the near future. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Keywords: BALAINO4
LAYERED PEROVSKITE
OXYGEN-ION CONDUCTIVITY
PROTONIC CONDUCTIVITY
RUDDLESDEN-POPPER STRUCTURE
THE PROTON CONDUCTING SOLID OXIDE FUEL CELLS
WATER UPTAKE
BARIUM COMPOUNDS
FUNCTIONAL MATERIALS
IONS
NEODYMIUM COMPOUNDS
OXYGEN
PEROVSKITE
PROTON CONDUCTIVITY
SOLID ELECTROLYTES
SOLID OXIDE FUEL CELLS (SOFC)
STRONTIUM COMPOUNDS
STRUCTURE (COMPOSITION)
DRY AIR
ELECTROCHEMICAL APPLICATIONS
LAYERED PEROVSKITE
MATERIAL-BASED
OXYGEN-ION CONDUCTIVITY
PROTONIC CONDUCTIVITIES
RUDDLESDEN-POPPER STRUCTURES
THE PROTON CONDUCTING SOLID OXIDE FUEL CELL
WATER UPTAKE
LANTHANUM COMPOUNDS
URI: http://hdl.handle.net/10995/112118
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85121707417
PURE ID: 29209940
ISSN: 1996-1944
metadata.dc.description.sponsorship: This article was financially supported by the Ministry of Education and Science of the Russian Federation (state assignment no. 075-03-2021-051/5).
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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