On the La2/3-xLi3xTiO3/Al 2O3 composite solid-electrolyte for Li-ion conduction

Hui Zhang, Xingbo Liu, Yue Qi, Vic Liu

Research output: Research - peer-reviewArticle

  • 7 Citations

Abstract

An effective ceramic processing route including tape casting and relatively low-temperature calcination has been adopted to fabricate La 0.56Li0.33TiO3 (LLTO)/Al2O 3 composite electrolytes. Correlation among additional amount of Al2O3, microstructure and Li-ion conductivity of the composites is examined and evaluated. What is most interesting from X-ray diffraction and transmission electron microscopy is that LiAl5O 8 phase is found to form in the LLTO/Al2O3 composites during calcination. The present study indicates that the presence of LiAl5O8 has a beneficial effect of increasing ionic conductivity and decreasing activation energy. It was observed that the LLTO/10 wt% Al2O3 composite electrolyte exhibits a higher conductivity at bulk (~6 times) and grain boundary (~3 times) compared to pure LLTO at room temperature. An Arrhenius temperature dependence of Li-ion motion in this composite electrolyte is obtained, displaying low activation energy of 0.17 and 0.37 eV for bulk and grain boundary conduction, respectively.

LanguageEnglish (US)
Pages57-63
Number of pages7
JournalJournal of Alloys and Compounds
Volume577
DOIs
StatePublished - 2013
Externally publishedYes

Profile

Solid electrolytes
Ions
Composite materials
Electrolytes
Temperature
Calcination
Grain boundaries
Activation energy
Ionic conductivity
Tapes
Casting
Transmission electron microscopy
X ray diffraction
Microstructure
Processing

Keywords

  • Composite materials
  • Grain boundaries
  • Ionic conduction
  • La LiTiO
  • Solid electrolytes
  • Spinel

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

Cite this

On the La2/3-xLi3xTiO3/Al 2O3 composite solid-electrolyte for Li-ion conduction. / Zhang, Hui; Liu, Xingbo; Qi, Yue; Liu, Vic.

In: Journal of Alloys and Compounds, Vol. 577, 2013, p. 57-63.

Research output: Research - peer-reviewArticle

@article{d6bc952dc2b146faa003595e16bfe4ce,
title = "On the La2/3-xLi3xTiO3/Al 2O3 composite solid-electrolyte for Li-ion conduction",
abstract = "An effective ceramic processing route including tape casting and relatively low-temperature calcination has been adopted to fabricate La 0.56Li0.33TiO3 (LLTO)/Al2O 3 composite electrolytes. Correlation among additional amount of Al2O3, microstructure and Li-ion conductivity of the composites is examined and evaluated. What is most interesting from X-ray diffraction and transmission electron microscopy is that LiAl5O 8 phase is found to form in the LLTO/Al2O3 composites during calcination. The present study indicates that the presence of LiAl5O8 has a beneficial effect of increasing ionic conductivity and decreasing activation energy. It was observed that the LLTO/10 wt% Al2O3 composite electrolyte exhibits a higher conductivity at bulk (~6 times) and grain boundary (~3 times) compared to pure LLTO at room temperature. An Arrhenius temperature dependence of Li-ion motion in this composite electrolyte is obtained, displaying low activation energy of 0.17 and 0.37 eV for bulk and grain boundary conduction, respectively.",
keywords = "Composite materials, Grain boundaries, Ionic conduction, La LiTiO, Solid electrolytes, Spinel",
author = "Hui Zhang and Xingbo Liu and Yue Qi and Vic Liu",
year = "2013",
doi = "10.1016/j.jallcom.2013.04.195",
volume = "577",
pages = "57--63",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - On the La2/3-xLi3xTiO3/Al 2O3 composite solid-electrolyte for Li-ion conduction

AU - Zhang,Hui

AU - Liu,Xingbo

AU - Qi,Yue

AU - Liu,Vic

PY - 2013

Y1 - 2013

N2 - An effective ceramic processing route including tape casting and relatively low-temperature calcination has been adopted to fabricate La 0.56Li0.33TiO3 (LLTO)/Al2O 3 composite electrolytes. Correlation among additional amount of Al2O3, microstructure and Li-ion conductivity of the composites is examined and evaluated. What is most interesting from X-ray diffraction and transmission electron microscopy is that LiAl5O 8 phase is found to form in the LLTO/Al2O3 composites during calcination. The present study indicates that the presence of LiAl5O8 has a beneficial effect of increasing ionic conductivity and decreasing activation energy. It was observed that the LLTO/10 wt% Al2O3 composite electrolyte exhibits a higher conductivity at bulk (~6 times) and grain boundary (~3 times) compared to pure LLTO at room temperature. An Arrhenius temperature dependence of Li-ion motion in this composite electrolyte is obtained, displaying low activation energy of 0.17 and 0.37 eV for bulk and grain boundary conduction, respectively.

AB - An effective ceramic processing route including tape casting and relatively low-temperature calcination has been adopted to fabricate La 0.56Li0.33TiO3 (LLTO)/Al2O 3 composite electrolytes. Correlation among additional amount of Al2O3, microstructure and Li-ion conductivity of the composites is examined and evaluated. What is most interesting from X-ray diffraction and transmission electron microscopy is that LiAl5O 8 phase is found to form in the LLTO/Al2O3 composites during calcination. The present study indicates that the presence of LiAl5O8 has a beneficial effect of increasing ionic conductivity and decreasing activation energy. It was observed that the LLTO/10 wt% Al2O3 composite electrolyte exhibits a higher conductivity at bulk (~6 times) and grain boundary (~3 times) compared to pure LLTO at room temperature. An Arrhenius temperature dependence of Li-ion motion in this composite electrolyte is obtained, displaying low activation energy of 0.17 and 0.37 eV for bulk and grain boundary conduction, respectively.

KW - Composite materials

KW - Grain boundaries

KW - Ionic conduction

KW - La LiTiO

KW - Solid electrolytes

KW - Spinel

UR - http://www.scopus.com/inward/record.url?scp=84878004405&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84878004405&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2013.04.195

DO - 10.1016/j.jallcom.2013.04.195

M3 - Article

VL - 577

SP - 57

EP - 63

JO - Journal of Alloys and Compounds

T2 - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

ER -