NDLI: Comparative study of solid-state reaction and sol-gel process for synthesis of Zr-doped Li$_{0.5}$La$_{0.5}$TiO$

Content Provider	SpringerLink
Author	Ling, Ming’en Zhu, Xiaohong Jiang, Yue Zhu, Jiliang
Copyright Year	2016
Abstract	We investigated the synergistic influences of synthesis methods (solid-state reaction vs. sol-gel process) and Zr$^{4+}$ doping on the structure and ionic conductivity of perovskite-structured Li$_{0.5}$La$_{0.5}$TiO$_{3}$ (LLTO) solid electrolytes. The lithium-ion conductivity of Li$_{0.5}$La$_{0.5}$Ti$_{1 − x }$Zr$_{ x }$O$_{3}$ ceramic specimens was evaluated as a function of x value and compared carefully between those two synthesis methods. Regarding the conductivity, sol-gel process is better for the synthesis of LLTO than solid-state reaction. As a result, the highest grain conductivity is obtained in the sol-gel-derived pure LLTO sample with x = 0, reaching 1.10 × 10$^{−3}$ S · cm$^{−1}$. Partial substitution of Zr$^{4+}$ enlarges the LLTO’s grain aggregate size and increases the total superficial area of aggregates. Consequently, Zr$^{4+}$ substitution not only affects the grain (bulk) conductivity, but more importantly, also improves the grain boundary conductivity and the total conductivity. The highest total conductivity is 5.84 × 10$^{−5}$ S · cm$^{−1}$ with x = 0.04 by sol-gel process.
Starting Page	2151
Ending Page	2156
Page Count	6
File Format	PDF
ISSN	09477047
Journal	Ionics
Volume Number	22
Issue Number	11
e-ISSN	18620760
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-06-09
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	LLTO Solid electrolytes Lithium-ion conductivity Perovskite Aggregate size Electrochemistry Renewable and Green Energy Optical and Electronic Materials Condensed Matter Physics Energy Storage
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Engineering Chemical Engineering Materials Science

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