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Influence of Liquid Solutions on the Ionic Conductivity of Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 Solid Electrolytes
Author(s) -
Huang Yi,
Jiang Yue,
Zhou Yuxi,
Hu Zhiwei,
Zhu Xiaohong
Publication year - 2019
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201901687
Subject(s) - conductivity , raman spectroscopy , ionic conductivity , materials science , dielectric spectroscopy , analytical chemistry (journal) , acetone , calcination , sintering , scanning electron microscope , electrolyte , infrared spectroscopy , microstructure , lithium (medication) , spectroscopy , chemistry , chromatography , organic chemistry , electrochemistry , composite material , medicine , physics , electrode , quantum mechanics , optics , endocrinology , catalysis
Hydrothermal synthesis is used to successfully prepare Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) solid electrolytes with high lithium‐ion conductivity, typically being 0.213 mS cm −1 . The best calcination and sintering temperatures are optimized to be 900 and 1075 °C, respectively. The solvent effects on conductivity and microstructure of LATP in water, ethanol and acetone are investigated by using impedance spectroscopy and scanning electron microscopy. The conductivity of LATP in water reaches 1.167 mS cm −1 . In ethanol, the conductivity of LATP is 0.464 mS cm −1 . There is no significant change in acetone. The structural stability of LATP after immersing in liquid solutions is verified by X‐ray diffraction and Raman spectroscopy. It is found by infrared spectroscopy that the change in conductivity is related to the adsorbed OH bond, and the reason for the increase in conductivity is discussed.