Premium
Ceramic‐Based Composite Solid Electrolyte for Lithium‐Ion Batteries
Author(s) -
Lim Young Jun,
Kim Hyun Woo,
Lee Seoung Soo,
Kim Hyo Jin,
Kim JaeKwang,
Jung YeonGil,
Kim Youngsik
Publication year - 2015
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201500106
Subject(s) - electrolyte , materials science , ionic conductivity , ceramic , composite number , lithium (medication) , electrochemistry , fast ion conductor , chemical engineering , inorganic chemistry , conductivity , electrode , chemistry , composite material , medicine , engineering , endocrinology
Solid‐state electrolytes such as lithium ion conducting ceramic or solid polymers have been studied as substitutes for liquid electrolytes, but critical problems exist at the interfacial resistance between the solid electrode and the solid electrolyte. In this study, we combined 80 wt % Li 1.3 Ti 1.7 Al 0.3 (PO 4 ) 3 (LTAP) as a lithium ion conducting ceramic with 10 wt % of poly(vinylidene fluoride) (PVdF) as a binder, and 10 wt % 1 M LiPF 6 in ethyl carbonate/dimethyl carbonate (EC/DMC) to develop a new composite electrolyte. The ceramic‐based composite electrolyte showed thermal stability and high ionic conductivity through reduction of the interface resistance. The lithium ion conductivity of the composite electrolyte was 8.9×10 −4 S cm −1 at room temperature without leakage. Electrochemical tests of the Li 1+x Mn 2 O 4 –LTAP‐based composite electrolyte–Li 1−x Mn 2 O 4 cell showed that the composite could be utilized as a potential electrolyte for high‐safety lithium‐ion batteries.