Preparation of carbon-coated TiO2 nanostructures for lithium-ion batteries

Sang Jun Park, Hansu Kim, Young Jun Kim, Hyukjae Lee

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

Carbon-coated TiO2 one-dimensional nanostructures are synthesized by hydrothermal reaction followed by post-calcination at various temperatures. Post-calcination induces crystallization of TiO2 and the complete crystallization of anatase phase is observed at 600 °C of the calcination temperature. Carbon-coated TiO2 nanostructures show relatively poor crystallinity as compared with the pristine counterparts, but their lithiation capacity and high rate capability are improved throughout all calcination temperatures. The coated carbon suppresses severe agglomeration of TiO2 nanotubes which allows easy access of Li-ions and electrons to the whole surface of primary nanotubes, leading to the better lithiation performance. Higher calcination temperatures cause excessive growth of nanotube walls, leading to the collapse of tubular morphology and deterioration of lithiation performance. At 700 °C of the calcination temperature, the enhanced electronic conductivity from the graphitization of the coated carbon seems to be the main reason for the improved capacity of TiO2 nanowires.

Original languageEnglish
Pages (from-to)5355-5362
Number of pages8
JournalElectrochimica Acta
Volume56
Issue number15
DOIs
StatePublished - 2011 Jun 1

Fingerprint

Calcination
Nanostructures
Carbon
Nanotubes
Crystallization
Temperature
Graphitization
Titanium dioxide
Nanowires
Deterioration
Lithium-ion batteries
Agglomeration
Ions
Electrons

Keywords

  • Carbon coating
  • Hydrothermal reaction
  • Lithium-ion batteries
  • Nanostructures
  • Titanium dioxide

Cite this

Park, Sang Jun ; Kim, Hansu ; Kim, Young Jun ; Lee, Hyukjae. / Preparation of carbon-coated TiO2 nanostructures for lithium-ion batteries. In: Electrochimica Acta. 2011 ; Vol. 56, No. 15. pp. 5355-5362.
@article{9f94eafc7df14ca9a9d97c50570743cd,
title = "Preparation of carbon-coated TiO2 nanostructures for lithium-ion batteries",
abstract = "Carbon-coated TiO2 one-dimensional nanostructures are synthesized by hydrothermal reaction followed by post-calcination at various temperatures. Post-calcination induces crystallization of TiO2 and the complete crystallization of anatase phase is observed at 600 °C of the calcination temperature. Carbon-coated TiO2 nanostructures show relatively poor crystallinity as compared with the pristine counterparts, but their lithiation capacity and high rate capability are improved throughout all calcination temperatures. The coated carbon suppresses severe agglomeration of TiO2 nanotubes which allows easy access of Li-ions and electrons to the whole surface of primary nanotubes, leading to the better lithiation performance. Higher calcination temperatures cause excessive growth of nanotube walls, leading to the collapse of tubular morphology and deterioration of lithiation performance. At 700 °C of the calcination temperature, the enhanced electronic conductivity from the graphitization of the coated carbon seems to be the main reason for the improved capacity of TiO2 nanowires.",
keywords = "Carbon coating, Hydrothermal reaction, Lithium-ion batteries, Nanostructures, Titanium dioxide",
author = "Park, {Sang Jun} and Hansu Kim and Kim, {Young Jun} and Hyukjae Lee",
year = "2011",
month = "6",
day = "1",
doi = "10.1016/j.electacta.2011.03.119",
language = "English",
volume = "56",
pages = "5355--5362",
journal = "Electrochimica Acta",
issn = "0013-4686",
number = "15",

}

Preparation of carbon-coated TiO2 nanostructures for lithium-ion batteries. / Park, Sang Jun; Kim, Hansu; Kim, Young Jun; Lee, Hyukjae.

In: Electrochimica Acta, Vol. 56, No. 15, 01.06.2011, p. 5355-5362.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Preparation of carbon-coated TiO2 nanostructures for lithium-ion batteries

AU - Park, Sang Jun

AU - Kim, Hansu

AU - Kim, Young Jun

AU - Lee, Hyukjae

PY - 2011/6/1

Y1 - 2011/6/1

N2 - Carbon-coated TiO2 one-dimensional nanostructures are synthesized by hydrothermal reaction followed by post-calcination at various temperatures. Post-calcination induces crystallization of TiO2 and the complete crystallization of anatase phase is observed at 600 °C of the calcination temperature. Carbon-coated TiO2 nanostructures show relatively poor crystallinity as compared with the pristine counterparts, but their lithiation capacity and high rate capability are improved throughout all calcination temperatures. The coated carbon suppresses severe agglomeration of TiO2 nanotubes which allows easy access of Li-ions and electrons to the whole surface of primary nanotubes, leading to the better lithiation performance. Higher calcination temperatures cause excessive growth of nanotube walls, leading to the collapse of tubular morphology and deterioration of lithiation performance. At 700 °C of the calcination temperature, the enhanced electronic conductivity from the graphitization of the coated carbon seems to be the main reason for the improved capacity of TiO2 nanowires.

AB - Carbon-coated TiO2 one-dimensional nanostructures are synthesized by hydrothermal reaction followed by post-calcination at various temperatures. Post-calcination induces crystallization of TiO2 and the complete crystallization of anatase phase is observed at 600 °C of the calcination temperature. Carbon-coated TiO2 nanostructures show relatively poor crystallinity as compared with the pristine counterparts, but their lithiation capacity and high rate capability are improved throughout all calcination temperatures. The coated carbon suppresses severe agglomeration of TiO2 nanotubes which allows easy access of Li-ions and electrons to the whole surface of primary nanotubes, leading to the better lithiation performance. Higher calcination temperatures cause excessive growth of nanotube walls, leading to the collapse of tubular morphology and deterioration of lithiation performance. At 700 °C of the calcination temperature, the enhanced electronic conductivity from the graphitization of the coated carbon seems to be the main reason for the improved capacity of TiO2 nanowires.

KW - Carbon coating

KW - Hydrothermal reaction

KW - Lithium-ion batteries

KW - Nanostructures

KW - Titanium dioxide

UR - http://www.scopus.com/inward/record.url?scp=79958128032&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2011.03.119

DO - 10.1016/j.electacta.2011.03.119

M3 - Article

AN - SCOPUS:79958128032

VL - 56

SP - 5355

EP - 5362

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

IS - 15

ER -