Journal Article

FZJ-2019-03337

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Impact of sintering temperature on phase formation, microstructure, crystallinity and ionic conductivity of Li1.5Al0.5Ti1.5(PO4)3

Davaasuren, B. (Corresponding author)FZJ* ; Tietz, F.FZJ*

2019
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/22364  doi:10.1016/j.ssi.2019.05.016

Abstract: A systematic study was carried out to explore the impact of sintering temperature on the densification, phase formation, microstructure, crystallinity, and ionic conductivity of Li1.5Al0.5Ti1.5(PO4)3 (LATP). There is clear evidence that a) both the total conductivity and bulk conductivity increase with increasing sintering temperature, and b) the phase purity, crystallinity and compositional homogeneity range of LATP are the key factors that influence the bulk ionic conductivity. Furthermore, the influence of a sintering aid (Li2B4O7) on the microstructure and ionic conductivity of LATP was probed. The Li2B4O7 improved the microstructural parameters of the LATP electrolyte and thus remarkably reduced the grain boundary resistance of the pristine LATP from 3500 Ω·cm to 1500 Ω·cm. The sintering aid Li2B4O7 did not influence the stoichiometry or the long-range order of LATP but rather acted as an ion-conducting bridge between the LATP grains facilitating the Li-ion transport.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
2. Helmholtz-Institut Münster Ionenleiter für Energiespeicher (IEK-12)

Research Program(s):

1. 131 - Electrochemical Storage (POF3-131) (POF3-131)

Appears in the scientific report 2019

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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