The studies of structural stability of LiNi0.5 Mn1.5O4 spinel

Sung Bin Park; Yool Koo Kim; Wan Gyu Lee; Won Il Cho; Ho Jang

The studies of structural stability of LiNi_0.5 Mn_1.5O₄ spinel

Sung Bin Park, Yool Koo Kim, Wan Gyu Lee, Won Il Cho, Ho Jang

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The stability of the cathode materials for Li secondary battery is an important factor for its cyclability. The present paper focuses on the structural stability of LiNi_0.5 Mn_1.5O₄ during lithiation/delithiation of Li ions and compared to that of LiMn₂O₄. LiMn₂O₄ and LiNi_0.5 Mn_1.5O₄ powders are synthesized using a solgel method and their structural and electrochemical properties are investigated by XRD, SEM, and charge-discharge tests. Li_xMn₂O₄ and Li_xNi_1.5 Mn_1.5O₄ (x=0.9,0.5,0.1) specimens are obtained after charge/discharge tests by controlling the cut-off voltage for XRD and TEM investigation. The charge-discharge tests shows that initial capacity of LiNi_0.5 Mn_1.5O₄ is 125 mAh/g and that of LiMn₂O₄ is around 100 mAh/g. The capacity of LiNi_0.5 Mn_1.5O₄ is maintained 95% of its initial capacity whereas the capacity of LiMn₂O₄ is maintained 65% of its initial capacity.

Original language	English
Pages (from-to)	174-181
Number of pages	8
Journal	Journal of Korean Institute of Metals and Materials
Volume	46
Issue number	3
Publication status	Published - 2008 Mar

Keywords

Capacity fading
LiNi MnO
Lithium batteries
TEM

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Modelling and Simulation
Surfaces, Coatings and Films
Metals and Alloys

Cite this

@article{b6d7dd9453fe43809de8afd51655b985,

title = "The studies of structural stability of LiNi0.5 Mn1.5O4 spinel",

abstract = "The stability of the cathode materials for Li secondary battery is an important factor for its cyclability. The present paper focuses on the structural stability of LiNi0.5 Mn1.5O4 during lithiation/delithiation of Li ions and compared to that of LiMn2O4. LiMn2O4 and LiNi0.5 Mn1.5O4 powders are synthesized using a solgel method and their structural and electrochemical properties are investigated by XRD, SEM, and charge-discharge tests. LixMn2O4 and LixNi1.5 Mn1.5O4 (x=0.9,0.5,0.1) specimens are obtained after charge/discharge tests by controlling the cut-off voltage for XRD and TEM investigation. The charge-discharge tests shows that initial capacity of LiNi0.5 Mn1.5O4 is 125 mAh/g and that of LiMn2O4 is around 100 mAh/g. The capacity of LiNi0.5 Mn1.5O4 is maintained 95% of its initial capacity whereas the capacity of LiMn2O4 is maintained 65% of its initial capacity.",

keywords = "Capacity fading, LiNi MnO, Lithium batteries, TEM",

author = "Park, {Sung Bin} and Kim, {Yool Koo} and Lee, {Wan Gyu} and Cho, {Won Il} and Ho Jang",

year = "2008",

month = mar,

language = "English",

volume = "46",

pages = "174--181",

journal = "Journal of Korean Institute of Metals and Materials",

issn = "1738-8228",

publisher = "Korean Institute of Metals and Materials",

number = "3",

}

TY - JOUR

T1 - The studies of structural stability of LiNi0.5 Mn1.5O4 spinel

AU - Park, Sung Bin

AU - Kim, Yool Koo

AU - Lee, Wan Gyu

AU - Cho, Won Il

AU - Jang, Ho

PY - 2008/3

Y1 - 2008/3

N2 - The stability of the cathode materials for Li secondary battery is an important factor for its cyclability. The present paper focuses on the structural stability of LiNi0.5 Mn1.5O4 during lithiation/delithiation of Li ions and compared to that of LiMn2O4. LiMn2O4 and LiNi0.5 Mn1.5O4 powders are synthesized using a solgel method and their structural and electrochemical properties are investigated by XRD, SEM, and charge-discharge tests. LixMn2O4 and LixNi1.5 Mn1.5O4 (x=0.9,0.5,0.1) specimens are obtained after charge/discharge tests by controlling the cut-off voltage for XRD and TEM investigation. The charge-discharge tests shows that initial capacity of LiNi0.5 Mn1.5O4 is 125 mAh/g and that of LiMn2O4 is around 100 mAh/g. The capacity of LiNi0.5 Mn1.5O4 is maintained 95% of its initial capacity whereas the capacity of LiMn2O4 is maintained 65% of its initial capacity.

AB - The stability of the cathode materials for Li secondary battery is an important factor for its cyclability. The present paper focuses on the structural stability of LiNi0.5 Mn1.5O4 during lithiation/delithiation of Li ions and compared to that of LiMn2O4. LiMn2O4 and LiNi0.5 Mn1.5O4 powders are synthesized using a solgel method and their structural and electrochemical properties are investigated by XRD, SEM, and charge-discharge tests. LixMn2O4 and LixNi1.5 Mn1.5O4 (x=0.9,0.5,0.1) specimens are obtained after charge/discharge tests by controlling the cut-off voltage for XRD and TEM investigation. The charge-discharge tests shows that initial capacity of LiNi0.5 Mn1.5O4 is 125 mAh/g and that of LiMn2O4 is around 100 mAh/g. The capacity of LiNi0.5 Mn1.5O4 is maintained 95% of its initial capacity whereas the capacity of LiMn2O4 is maintained 65% of its initial capacity.

KW - Capacity fading

KW - LiNi MnO

KW - Lithium batteries

KW - TEM

UR - http://www.scopus.com/inward/record.url?scp=43149099879&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=43149099879&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:43149099879

SN - 1738-8228

VL - 46

SP - 174

EP - 181

JO - Journal of Korean Institute of Metals and Materials

JF - Journal of Korean Institute of Metals and Materials

IS - 3

ER -

The studies of structural stability of LiNi_0.5 Mn_1.5O₄ spinel

Abstract

Keywords

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this