The distinct role of transition metal doping for LiFePO 4 cathode material

Sung Bin Park, Chang Kyoo Park, Jin Tae Hwang, Won Il Cho, Ho Jang

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This study addresses the controversial issue of the effect of metal ion doping on the electrochemical performance of LiFePO 4. Metal doping is claimed to be a possible cause for the capacity improvement of LiFePO 4 as carbon coating. Results obtained inthis study show that dry-milled LiFePO 4 and LiFe 0.9Cr 0.1PO 4 deliver 119 mAh g -1 and 101 mAh g -1 , while wet-milled LiFePO 4 and LiFe 0.9Cr 0.1PO 4 deliver 149 mAh g -1 and 138 mAh g -1 , respectively. This indicates that the capacity improvement by metal doping is due to the carbonaceous materials produced during fabrication and not by the enhancement of ion diffusion. On the other hand, cycle test results show that metal doping enhances the rate capability at high C-rates by accelerating lithium ion diffusion.

Original languageEnglish
Pages (from-to)729-732
Number of pages4
JournalMetals and Materials International
Volume17
Issue number5
DOIs
Publication statusPublished - 2011 Oct 1

Fingerprint

Transition metals
Cathodes
cathodes
transition metals
Doping (additives)
Metals
metals
Ions
carbonaceous materials
Lithium
Metal ions
metal ions
ions
Carbon
lithium
coatings
Fabrication
Coatings
cycles
fabrication

Keywords

  • Diffusion
  • Electrical conductivity
  • Electrochemistry
  • Energy storage materials
  • Mechanical milling

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Metals and Alloys
  • Mechanics of Materials
  • Materials Chemistry

Cite this

The distinct role of transition metal doping for LiFePO 4 cathode material. / Park, Sung Bin; Park, Chang Kyoo; Hwang, Jin Tae; Cho, Won Il; Jang, Ho.

In: Metals and Materials International, Vol. 17, No. 5, 01.10.2011, p. 729-732.

Research output: Contribution to journalArticle

Park, Sung Bin ; Park, Chang Kyoo ; Hwang, Jin Tae ; Cho, Won Il ; Jang, Ho. / The distinct role of transition metal doping for LiFePO 4 cathode material. In: Metals and Materials International. 2011 ; Vol. 17, No. 5. pp. 729-732.
@article{31efc63cb18f4802968a34060da66997,
title = "The distinct role of transition metal doping for LiFePO 4 cathode material",
abstract = "This study addresses the controversial issue of the effect of metal ion doping on the electrochemical performance of LiFePO 4. Metal doping is claimed to be a possible cause for the capacity improvement of LiFePO 4 as carbon coating. Results obtained inthis study show that dry-milled LiFePO 4 and LiFe 0.9Cr 0.1PO 4 deliver 119 mAh g -1 and 101 mAh g -1 , while wet-milled LiFePO 4 and LiFe 0.9Cr 0.1PO 4 deliver 149 mAh g -1 and 138 mAh g -1 , respectively. This indicates that the capacity improvement by metal doping is due to the carbonaceous materials produced during fabrication and not by the enhancement of ion diffusion. On the other hand, cycle test results show that metal doping enhances the rate capability at high C-rates by accelerating lithium ion diffusion.",
keywords = "Diffusion, Electrical conductivity, Electrochemistry, Energy storage materials, Mechanical milling",
author = "Park, {Sung Bin} and Park, {Chang Kyoo} and Hwang, {Jin Tae} and Cho, {Won Il} and Ho Jang",
year = "2011",
month = "10",
day = "1",
doi = "10.1007/s12540-011-1005-3",
language = "English",
volume = "17",
pages = "729--732",
journal = "Metals and Materials International",
issn = "1598-9623",
publisher = "Korean Institute of Metals and Materials",
number = "5",

}

TY - JOUR

T1 - The distinct role of transition metal doping for LiFePO 4 cathode material

AU - Park, Sung Bin

AU - Park, Chang Kyoo

AU - Hwang, Jin Tae

AU - Cho, Won Il

AU - Jang, Ho

PY - 2011/10/1

Y1 - 2011/10/1

N2 - This study addresses the controversial issue of the effect of metal ion doping on the electrochemical performance of LiFePO 4. Metal doping is claimed to be a possible cause for the capacity improvement of LiFePO 4 as carbon coating. Results obtained inthis study show that dry-milled LiFePO 4 and LiFe 0.9Cr 0.1PO 4 deliver 119 mAh g -1 and 101 mAh g -1 , while wet-milled LiFePO 4 and LiFe 0.9Cr 0.1PO 4 deliver 149 mAh g -1 and 138 mAh g -1 , respectively. This indicates that the capacity improvement by metal doping is due to the carbonaceous materials produced during fabrication and not by the enhancement of ion diffusion. On the other hand, cycle test results show that metal doping enhances the rate capability at high C-rates by accelerating lithium ion diffusion.

AB - This study addresses the controversial issue of the effect of metal ion doping on the electrochemical performance of LiFePO 4. Metal doping is claimed to be a possible cause for the capacity improvement of LiFePO 4 as carbon coating. Results obtained inthis study show that dry-milled LiFePO 4 and LiFe 0.9Cr 0.1PO 4 deliver 119 mAh g -1 and 101 mAh g -1 , while wet-milled LiFePO 4 and LiFe 0.9Cr 0.1PO 4 deliver 149 mAh g -1 and 138 mAh g -1 , respectively. This indicates that the capacity improvement by metal doping is due to the carbonaceous materials produced during fabrication and not by the enhancement of ion diffusion. On the other hand, cycle test results show that metal doping enhances the rate capability at high C-rates by accelerating lithium ion diffusion.

KW - Diffusion

KW - Electrical conductivity

KW - Electrochemistry

KW - Energy storage materials

KW - Mechanical milling

UR - http://www.scopus.com/inward/record.url?scp=84863011621&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84863011621&partnerID=8YFLogxK

U2 - 10.1007/s12540-011-1005-3

DO - 10.1007/s12540-011-1005-3

M3 - Article

VL - 17

SP - 729

EP - 732

JO - Metals and Materials International

JF - Metals and Materials International

SN - 1598-9623

IS - 5

ER -