Premium
Structure and lithium‐ion mobility in Li 1.5 M 0.5 Ge 1.5 (PO 4 ) 3 (M = Ga, Sc, Y) NASICON glass‐ceramics
Author(s) -
d'Anciães Almeida Silva Igor,
NietoMuñoz Adriana M.,
Rodrigues Ana Candida M.,
Eckert Hellmut
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16998
Subject(s) - lithium (medication) , fast ion conductor , gallium , analytical chemistry (journal) , materials science , conductivity , powder diffraction , octahedron , electrical resistivity and conductivity , x ray crystallography , ion , crystallography , crystal structure , diffraction , chemistry , electrolyte , optics , medicine , chromatography , organic chemistry , electrical engineering , metallurgy , endocrinology , physics , engineering , electrode
This work reports structural and lithium‐ion mobility studies in NASICON single‐ or multiple phase Li 1+ x M x Ge 2− x (PO 4 ) 3 (M = Ga 3+ , Sc 3+ , Y 3+ ) glass‐ceramics using solid‐state NMR techniques, X‐ray powder diffraction, and impedance spectroscopy. X‐ray powder diffraction data show the successful incorporation of Ga 3+ and Sc 3+ into the Ge 4+ octahedral sites of the NASICON structure at the levels of x = 0.5 and 0.4, respectively. The glass‐to‐crystal transition was further characterized by multinuclear NMR and electrical conductivity measurements. Among the studied samples, the gallium‐containing glass‐ceramic presented the highest DC conductivity, 1.1 × 10 −4 S/cm at room temperature, whereas for the Sc‐containing samples, the maximum room temperature conductivity that could be reached was 4.8 × 10 −6 S/cm. No indications of any substitution of Ge 4+ by Y 3+ could be found.