Synthesis and electrochemical characterization of 2D nanostructured Li 4Ti 5O 12 with lithium electrode functionality

Song Yi Han, In Young Kim, Seong Ju Hwang

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Two-dimensional (2D) Li 4Ti 5O 12 nanosheets with cubic spinel structure are synthesized via a lithiation process of exfoliated titanate 2D nanosheets and the subsequent heat-treatment at elevated temperatures. According to powder X-ray diffraction and field emission-scanning electron microscopy analysis, the obtained lithium titanium oxides show well-developed Bragg reflections of cubic spinel-structured Li 4Ti 5O 12 phase and highly anisotropic 2D plate-like morphology. Ti K-edge X-ray absorption near-edge structure analysis reveals the stabilization of tetravalent titanium ions in the cubic spinel lattice of Li 4Ti 5O 12. The 2D nanostructured Li 4Ti 5O 12 materials display the electrochemical functionality as negative electrode for lithium secondary batteries. The most promising electrode performance is achieved by the heat-treatment of the lithiated titanate at 600 °C, highlighting the importance of heating temperature in optimizing the electrochemical property of the resulting materials.

Original languageEnglish
Pages (from-to)1444-1447
Number of pages4
JournalJournal of Physics and Chemistry of Solids
Volume73
Issue number12
DOIs
Publication statusPublished - 2012 Dec 1

Fingerprint

Nanosheets
Lithium
spinel
lithium
Heat treatment
Electrodes
electrodes
Secondary batteries
Titanium oxides
X ray absorption
heat treatment
synthesis
anisotropic plates
Electrochemical properties
Field emission
X ray powder diffraction
lithium oxides
storage batteries
Stabilization
lithium batteries

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

@article{9133ffb38fe6477182281794881ca4d6,
title = "Synthesis and electrochemical characterization of 2D nanostructured Li 4Ti 5O 12 with lithium electrode functionality",
abstract = "Two-dimensional (2D) Li 4Ti 5O 12 nanosheets with cubic spinel structure are synthesized via a lithiation process of exfoliated titanate 2D nanosheets and the subsequent heat-treatment at elevated temperatures. According to powder X-ray diffraction and field emission-scanning electron microscopy analysis, the obtained lithium titanium oxides show well-developed Bragg reflections of cubic spinel-structured Li 4Ti 5O 12 phase and highly anisotropic 2D plate-like morphology. Ti K-edge X-ray absorption near-edge structure analysis reveals the stabilization of tetravalent titanium ions in the cubic spinel lattice of Li 4Ti 5O 12. The 2D nanostructured Li 4Ti 5O 12 materials display the electrochemical functionality as negative electrode for lithium secondary batteries. The most promising electrode performance is achieved by the heat-treatment of the lithiated titanate at 600 °C, highlighting the importance of heating temperature in optimizing the electrochemical property of the resulting materials.",
author = "Han, {Song Yi} and {Young Kim}, In and Hwang, {Seong Ju}",
year = "2012",
month = "12",
day = "1",
doi = "10.1016/j.jpcs.2011.10.044",
language = "English",
volume = "73",
pages = "1444--1447",
journal = "Journal of Physics and Chemistry of Solids",
issn = "0022-3697",
publisher = "Elsevier Limited",
number = "12",

}

Synthesis and electrochemical characterization of 2D nanostructured Li 4Ti 5O 12 with lithium electrode functionality. / Han, Song Yi; Young Kim, In; Hwang, Seong Ju.

In: Journal of Physics and Chemistry of Solids, Vol. 73, No. 12, 01.12.2012, p. 1444-1447.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Synthesis and electrochemical characterization of 2D nanostructured Li 4Ti 5O 12 with lithium electrode functionality

AU - Han, Song Yi

AU - Young Kim, In

AU - Hwang, Seong Ju

PY - 2012/12/1

Y1 - 2012/12/1

N2 - Two-dimensional (2D) Li 4Ti 5O 12 nanosheets with cubic spinel structure are synthesized via a lithiation process of exfoliated titanate 2D nanosheets and the subsequent heat-treatment at elevated temperatures. According to powder X-ray diffraction and field emission-scanning electron microscopy analysis, the obtained lithium titanium oxides show well-developed Bragg reflections of cubic spinel-structured Li 4Ti 5O 12 phase and highly anisotropic 2D plate-like morphology. Ti K-edge X-ray absorption near-edge structure analysis reveals the stabilization of tetravalent titanium ions in the cubic spinel lattice of Li 4Ti 5O 12. The 2D nanostructured Li 4Ti 5O 12 materials display the electrochemical functionality as negative electrode for lithium secondary batteries. The most promising electrode performance is achieved by the heat-treatment of the lithiated titanate at 600 °C, highlighting the importance of heating temperature in optimizing the electrochemical property of the resulting materials.

AB - Two-dimensional (2D) Li 4Ti 5O 12 nanosheets with cubic spinel structure are synthesized via a lithiation process of exfoliated titanate 2D nanosheets and the subsequent heat-treatment at elevated temperatures. According to powder X-ray diffraction and field emission-scanning electron microscopy analysis, the obtained lithium titanium oxides show well-developed Bragg reflections of cubic spinel-structured Li 4Ti 5O 12 phase and highly anisotropic 2D plate-like morphology. Ti K-edge X-ray absorption near-edge structure analysis reveals the stabilization of tetravalent titanium ions in the cubic spinel lattice of Li 4Ti 5O 12. The 2D nanostructured Li 4Ti 5O 12 materials display the electrochemical functionality as negative electrode for lithium secondary batteries. The most promising electrode performance is achieved by the heat-treatment of the lithiated titanate at 600 °C, highlighting the importance of heating temperature in optimizing the electrochemical property of the resulting materials.

UR - http://www.scopus.com/inward/record.url?scp=84861572161&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84861572161&partnerID=8YFLogxK

U2 - 10.1016/j.jpcs.2011.10.044

DO - 10.1016/j.jpcs.2011.10.044

M3 - Article

AN - SCOPUS:84861572161

VL - 73

SP - 1444

EP - 1447

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

SN - 0022-3697

IS - 12

ER -