Open AccessStudy of lithium-conducting ceramics Li1.3Al0.3Ti1.7(PO4)3 with the nasicon structure
Author(s) -
И. В. Бочарова,
AUTHOR_ID,
Г. Б. Куншина,
AUTHOR_ID
Publication year - 2021
Publication title -
trudy kolʹskogo naučnogo centra ran
Language(s) - English
Resource type - Journals
ISSN - 2307-5252
DOI - 10.37614/2307-5252.2021.2.5.007
Subject(s) - fast ion conductor , materials science , electrolyte , ionic conductivity , lithium (medication) , ceramic , conductivity , phase (matter) , spinel , analytical chemistry (journal) , inorganic chemistry , mineralogy , chemistry , electrode , metallurgy , medicine , organic chemistry , chromatography , endocrinology
NASICON-type Li1.3Al0.3Ti1.7(PO4)3 ceramics with a high-density was obtained from powders synthesized from a liquid-phase precursor. The technological scheme of Li1.3Al0.3Ti1.7(PO4)3 solid electrolyte production is given. It is established that at 800 °C a single-phase well-crystallized Li1.3Al0.3Ti1.7(PO4)3 is formed. The ionic conductivity of the sintered Li1.3Al0.3Ti1.7(PO4)3 tablets (density 88–90 %) was 1,9·10–4 S/cm at room temperature, and the electronic conductivity did not exceed 5·10–10 S/cm. The Li+ ion transfer number, measured by potentiostatic chronoamperometry, was 0.99, indicating that the solid electrolyte Li1.3Al0.3Ti1.7(PO4)3 is a purely ionic conductor.