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Title: First-principle calculation of core level binding energies of Li{sub x}PO{sub y}N{sub z} solid electrolyte

We present first-principle calculations of core-level binding energies for the study of insulating, bulk phase, compounds, based on the Slater-Janak transition state model. Those calculations were performed in order to find a reliable model of the amorphous Li{sub x}PO{sub y}N{sub z} solid electrolyte which is able to reproduce its electronic properties gathered from X-ray photoemission spectroscopy (XPS) experiments. As a starting point, Li{sub 2}PO{sub 2}N models were investigated. These models, proposed by Du et al. on the basis of thermodynamics and vibrational properties, were the first structural models of Li{sub x}PO{sub y}N{sub z}. Thanks to chemical and structural modifications applied to Li{sub 2}PO{sub 2}N structures, which allow to demonstrate the relevance of our computational approach, we raise an issue concerning the possibility of encountering a non-bridging kind of nitrogen atoms (=N{sup −}) in Li{sub x}PO{sub y}N{sub z} compounds.
Authors:
; ;  [1]
  1. IPREM - ECP CNRS UMR 5254, Université de Pau et des Pays de l’Adour, Technopole Hélioparc, 2 Ave. du Président Pierre Angot, 64053 Pau cedex 9 (France)
Publication Date:
OSTI Identifier:
22415438
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 141; Journal Issue: 24; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ATOMS; BINDING ENERGY; LITHIUM NITRIDES; LITHIUM PHOSPHATES; MODIFICATIONS; PHASE STUDIES; SOLID ELECTROLYTES; STRUCTURAL MODELS; THERMODYNAMICS; VIBRATIONAL STATES; X-RAY PHOTOELECTRON SPECTROSCOPY