Enhanced lithium ion conductivity in lithium lanthanum titanate solid electrolyte nanowires prepared by electrospinning

Ting Yang, Ying Li, Candace Chan

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Solid electrolytes have great potential to address the safety issues of Li-ion batteries, but better synthesis methods are still required for ceramics such as lithium lanthanum titanate (LLTO) since current techniques require high-temperature calcination for long times. Here we report a new approach that utilizes electrospinning to prepare phase-pure polycrystalline LLTO nanowires with well-crystallized tetragonal structure after only 3 h calcination at 1000 °C. Pellets prepared from the electrospun LLTO nanowires had higher density, less void space, and higher Li+ conductivity compared to those comprised of LLTO prepared with conventional sol-gel methods. This work demonstrates the potential that electrospinning can provide towards improving the properties of sol-gel derived ceramics.

Original languageEnglish
Pages (from-to)164-169
Number of pages6
JournalJournal of Power Sources
Volume287
DOIs
Publication statusPublished - Aug 1 2015

Fingerprint

Lanthanum
Solid electrolytes
Electrospinning
solid electrolytes
Lithium
lanthanum
Calcination
roasting
Nanowires
nanowires
lithium
gels
ceramics
Ions
conductivity
pellets
Sol-gel process
Sol-gels
electric batteries
voids

Keywords

  • Electrospinning
  • Li-ion batteries
  • Lithium lanthanum titanate
  • Nanowires
  • Solid electrolyte

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Physical and Theoretical Chemistry

Cite this

Enhanced lithium ion conductivity in lithium lanthanum titanate solid electrolyte nanowires prepared by electrospinning. / Yang, Ting; Li, Ying; Chan, Candace.

In: Journal of Power Sources, Vol. 287, 01.08.2015, p. 164-169.

Research output: Contribution to journalArticle

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