TY  - JOUR
AU  - Rossbach, Andreas
AU  - Tietz, Frank
AU  - Grieshammer, Steffen
TI  - Structural and transport properties of lithium-conducting NASICON materials
JO  - Journal of power sources
VL  - 391
SN  - 0378-7753
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - FZJ-2018-04623
SP  - 1 - 9
PY  - 2018
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000440265800001
DO  - DOI:10.1016/j.jpowsour.2018.04.059
UR  - https://juser.fz-juelich.de/record/850872
ER  -