The sintering temperature effect on electrochemical properties of limn2o4

Jin Tae Hwang, Sung Bin Park, Chang Kyoo Park, Ho Jang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The effect of sintering temperature on the electrochemical property of LiMn2O4 was investigated. Results showed that the particle size was increased at higher sintering temperatures while the initial capacity was decreased after high temperature sintering. Capacity fading, on the other hand, was suppressed at lower sintering temperatures since the sintering at higher temperatures (≥ 800 °C) increased the Mn ions with a lower oxidation state (Mn+3), which induced structural instability during cycling due to dissolution of Mn ions into the electrolyte. In particular, LiMn2O4 sintered above 830 °C showed severe capacity fading (capacity loss was 38% of initial capacity) by lower coulombic efficiency due to the abnormally increased particle size.

Original languageEnglish
Pages (from-to)3952-3958
Number of pages7
JournalBulletin of the Korean Chemical Society
Volume32
Issue number11
Publication statusPublished - 2011 Nov 20

Fingerprint

Electrochemical properties
Thermal effects
Sintering
Temperature
Particle size
Ions
Electrolytes
Dissolution
lithium manganese oxide
Oxidation

Keywords

  • Capacity fading
  • LiMnO
  • Manganese dissolution
  • Particle size
  • Sintering

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

The sintering temperature effect on electrochemical properties of limn2o4. / Hwang, Jin Tae; Park, Sung Bin; Park, Chang Kyoo; Jang, Ho.

In: Bulletin of the Korean Chemical Society, Vol. 32, No. 11, 20.11.2011, p. 3952-3958.

Research output: Contribution to journalArticle

Hwang, Jin Tae ; Park, Sung Bin ; Park, Chang Kyoo ; Jang, Ho. / The sintering temperature effect on electrochemical properties of limn2o4. In: Bulletin of the Korean Chemical Society. 2011 ; Vol. 32, No. 11. pp. 3952-3958.
@article{ec29f514d0de4c2baf96858b500248ff,
title = "The sintering temperature effect on electrochemical properties of limn2o4",
abstract = "The effect of sintering temperature on the electrochemical property of LiMn2O4 was investigated. Results showed that the particle size was increased at higher sintering temperatures while the initial capacity was decreased after high temperature sintering. Capacity fading, on the other hand, was suppressed at lower sintering temperatures since the sintering at higher temperatures (≥ 800 °C) increased the Mn ions with a lower oxidation state (Mn+3), which induced structural instability during cycling due to dissolution of Mn ions into the electrolyte. In particular, LiMn2O4 sintered above 830 °C showed severe capacity fading (capacity loss was 38{\%} of initial capacity) by lower coulombic efficiency due to the abnormally increased particle size.",
keywords = "Capacity fading, LiMnO, Manganese dissolution, Particle size, Sintering",
author = "Hwang, {Jin Tae} and Park, {Sung Bin} and Park, {Chang Kyoo} and Ho Jang",
year = "2011",
month = "11",
day = "20",
language = "English",
volume = "32",
pages = "3952--3958",
journal = "Bulletin of the Korean Chemical Society",
issn = "0253-2964",
publisher = "Wiley-Blackwell",
number = "11",

}

TY - JOUR

T1 - The sintering temperature effect on electrochemical properties of limn2o4

AU - Hwang, Jin Tae

AU - Park, Sung Bin

AU - Park, Chang Kyoo

AU - Jang, Ho

PY - 2011/11/20

Y1 - 2011/11/20

N2 - The effect of sintering temperature on the electrochemical property of LiMn2O4 was investigated. Results showed that the particle size was increased at higher sintering temperatures while the initial capacity was decreased after high temperature sintering. Capacity fading, on the other hand, was suppressed at lower sintering temperatures since the sintering at higher temperatures (≥ 800 °C) increased the Mn ions with a lower oxidation state (Mn+3), which induced structural instability during cycling due to dissolution of Mn ions into the electrolyte. In particular, LiMn2O4 sintered above 830 °C showed severe capacity fading (capacity loss was 38% of initial capacity) by lower coulombic efficiency due to the abnormally increased particle size.

AB - The effect of sintering temperature on the electrochemical property of LiMn2O4 was investigated. Results showed that the particle size was increased at higher sintering temperatures while the initial capacity was decreased after high temperature sintering. Capacity fading, on the other hand, was suppressed at lower sintering temperatures since the sintering at higher temperatures (≥ 800 °C) increased the Mn ions with a lower oxidation state (Mn+3), which induced structural instability during cycling due to dissolution of Mn ions into the electrolyte. In particular, LiMn2O4 sintered above 830 °C showed severe capacity fading (capacity loss was 38% of initial capacity) by lower coulombic efficiency due to the abnormally increased particle size.

KW - Capacity fading

KW - LiMnO

KW - Manganese dissolution

KW - Particle size

KW - Sintering

UR - http://www.scopus.com/inward/record.url?scp=81755163724&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=81755163724&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:81755163724

VL - 32

SP - 3952

EP - 3958

JO - Bulletin of the Korean Chemical Society

JF - Bulletin of the Korean Chemical Society

SN - 0253-2964

IS - 11

ER -