Journal Article

FZJ-2018-04623

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Structural and transport properties of lithium-conducting NASICON materials

Rossbach, A.FZJ* ; Tietz, F.FZJ* ; Grieshammer, S. (Corresponding author)FZJ*

2018
Elsevier New York, NY [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.jpowsour.2018.04.059

Abstract: Lithium-containing NASICON-structured materials are a promising class of solid-state Li-ion conductors for application in electrochemical energy storage devices. Amongst the wide variety of possible compositions the highest conductivities are reported for materials according to the formula Li1+xMx(III)M2−x(IV)(PO4)3, in which the substitution of tetravalent with trivalent metal cations leads to incorporation of additional lithium ions and a higher mobility of the charge carriers.For this study, we surveyed more than 300 research articles about Li-NASICON materials. The relations between composition, structure and conductivity are evaluated to give a comprehensive overview of published data on synthesized compositions. A special focus is laid on Li1+xAlxTi2-x (PO4)3 as the single most conductive and investigated material.The collected conductivities show a wide scattering in a range of 10-10 S cm-1 up to 10-3 S cm-1. The highest values are obtained for materials with M(III) to M(IV) cation ratios of x = 0.3–0.4. Further characteristics for high conductivity are evaluated and the rhombohedral structure as well as cation sizes of around 50–60 p.m. are identified as crucial prerequisites, favoring titanium-based compositions. Considering the evaluated data, selected compositions are suggested for further investigation to support future research.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)

Research Program(s):

1. 131 - Electrochemical Storage (POF3-131) (POF3-131)
2. SOFC - Solid Oxide Fuel Cell (SOFC-20140602) (SOFC-20140602)

Appears in the scientific report 2018

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Database coverage:
; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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