Electrical properties and oxide ion conducting mechanism in Na-doped LaPO4
Shipeng Geng, Alberto J. Fernández‐Carrión, Jungu Xu, Huaibo Yi, Yun Lv, Xiaojun Kuang
Abstract
In this paper, series of Na-doped La 1- x Na x PO 4- x (0 ≤ x ≤ 0.2) materials are synthesized by solid state reaction method, and single phase has been obtained for 0 ≤ x ≤ 0.1. The doped materials show significantly improved conductivity under dry environment by about four orders of magnitude, but dominated by sodium ion conduction, with ~ 10% oxide ion conduction. The oxide ion conducting mechanism in LaPO 4 -based materials is studied for the first time by molecular dynamic simulations based on interatomic potential approach. This work therefore provides a comprehensive view of the underlying oxide ion migration mechanism for LaPO 4 -based materials.
Topics & Concepts
Materials scienceOxideIonDopingChemical physicsConductivityThermal conductionElectrical resistivity and conductivityInteratomic potentialPhase (matter)Work (physics)Chemical engineeringInorganic chemistryAnalytical Chemistry (journal)Molecular dynamicsPhysical chemistryThermodynamicsComposite materialComputational chemistryOptoelectronicsMetallurgyChemistryOrganic chemistryEngineeringPhysicsElectrical engineeringAdvancements in Solid Oxide Fuel CellsLuminescence Properties of Advanced MaterialsSolid-state spectroscopy and crystallography