Synthesis and conductivity studies of Li1.5Al0.5Ge1.5(PO4)3 solid electrolyte
- Authors: Kunshina G.B.1, Bocharova I.V.1, Lokshin E.P.1
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Affiliations:
- Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center
- Issue: Vol 52, No 3 (2016)
- Pages: 279-284
- Section: Article
- URL: https://journals.rcsi.science/0020-1685/article/view/157380
- DOI: https://doi.org/10.1134/S0020168516030080
- ID: 157380
Cite item
Abstract
This paper describes the preparation of a lithium ion conducting solid electrolyte with the composition Li1.5Al0.5Ge1.5(PO4)3 by a new liquid-phase method with the use of the water-soluble salts Al(NO3)3 · 9H2O, LiNO3 · 3H2O, and (NH4)2HPO4 and the germano-oxalic acid H2[Ge(C2O4)3]. The synthesized materials have been characterized by X-ray diffraction, differential scanning calorimetry, thermogravimetry, and impedance spectroscopy. The results demonstrate that sintering of the synthesized amorphous powders at a temperature of 650°C leads to the formation of phase-pure Li1.5Al0.5Ge1.5(PO4)3. The ionic conductivity of the electrolyte measured at frequencies from 10 Hz to 2 MHz using pellets with an 86% relative density was 4.2 × 10–4 S/cm.
About the authors
G. B. Kunshina
Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center
Author for correspondence.
Email: kunshina@chemy.kolasc.net.ru
Russian Federation, Akademgorodok 26a, Apatity, Murmansk oblast, 184209
I. V. Bocharova
Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center
Email: kunshina@chemy.kolasc.net.ru
Russian Federation, Akademgorodok 26a, Apatity, Murmansk oblast, 184209
E. P. Lokshin
Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center
Email: kunshina@chemy.kolasc.net.ru
Russian Federation, Akademgorodok 26a, Apatity, Murmansk oblast, 184209
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