LiNi0.5Mn1.5O4 showing reversible phase transition on 3 V region

Sang Ho Park; Sung Woo Oh; Chong Seung Yoon; Seung Taek Myung; Yang Kook Sun

doi:10.1149/1.1857113

LiNi_0.5Mn_1.5O₄ showing reversible phase transition on 3 V region

Sang Ho Park^*
, Sung Woo Oh
, Chong Seung Yoon
, Seung Taek Myung
, Yang Kook Sun

^*Corresponding author for this work

Division of Chemical Engineering

Ctr. for Info. and Commun. Materials
Hanyang University
VK Corporation

Research output: Contribution to journal › Journal article › peer-review

47 Scopus citations

Abstract

Spinel LiNi_0.5Mri_1.5O₄ powders with different space group of Fd3̄m and P4₃32 were synthesized by an ultrasonic spray pyrolysis method. The morphologies of the prepared powders depended on their structures; polyhedral shape for Fd3̄m and octahedral for P4₃32. The obtained discharge capacities of the Fd3̄m and P4₃32 were about 60 mAh g^-1 and 60 mAh g^-1, respectively. Structural changes of both compounds were investigated on 3 V region by ex situ X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM). From the ex situ XRD and HRTEM studies, LiNi _0.5Mn_1.5O₄ having P4₃32 symmetry showed that structural transition occurred reversibly from simple cubic (P4 ₃32) to tetragonal phase (I4₁ / amd), whereas irreversible structural changes were observed for Fd3̄m symmetry on 3V region.

Original language	English
Pages (from-to)	A163-A167
Journal	Electrochemical and Solid-State Letters
Volume	8
Issue number	3
DOIs	https://doi.org/10.1149/1.1857113
State	Published - 2005

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@article{8fc8e3b1696849309134036bb7709a7a,

title = "LiNi0.5Mn1.5O4 showing reversible phase transition on 3 V region",

abstract = "Spinel LiNi0.5Mri1.5O4 powders with different space group of Fd{\=3}m and P4332 were synthesized by an ultrasonic spray pyrolysis method. The morphologies of the prepared powders depended on their structures; polyhedral shape for Fd{\=3}m and octahedral for P4332. The obtained discharge capacities of the Fd{\=3}m and P4332 were about 60 mAh g-1 and 60 mAh g-1, respectively. Structural changes of both compounds were investigated on 3 V region by ex situ X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM). From the ex situ XRD and HRTEM studies, LiNi 0.5Mn1.5O4 having P4332 symmetry showed that structural transition occurred reversibly from simple cubic (P4 332) to tetragonal phase (I41 / amd), whereas irreversible structural changes were observed for Fd{\=3}m symmetry on 3V region.",

author = "Park, \{Sang Ho\} and Oh, \{Sung Woo\} and Yoon, \{Chong Seung\} and Myung, \{Seung Taek\} and Sun, \{Yang Kook\}",

year = "2005",

doi = "10.1149/1.1857113",

language = "English",

volume = "8",

pages = "A163--A167",

journal = "Electrochemical and Solid-State Letters",

issn = "1099-0062",

number = "3",

}

TY - JOUR

T1 - LiNi0.5Mn1.5O4 showing reversible phase transition on 3 V region

AU - Park, Sang Ho

AU - Oh, Sung Woo

AU - Yoon, Chong Seung

AU - Myung, Seung Taek

AU - Sun, Yang Kook

PY - 2005

Y1 - 2005

N2 - Spinel LiNi0.5Mri1.5O4 powders with different space group of Fd3̄m and P4332 were synthesized by an ultrasonic spray pyrolysis method. The morphologies of the prepared powders depended on their structures; polyhedral shape for Fd3̄m and octahedral for P4332. The obtained discharge capacities of the Fd3̄m and P4332 were about 60 mAh g-1 and 60 mAh g-1, respectively. Structural changes of both compounds were investigated on 3 V region by ex situ X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM). From the ex situ XRD and HRTEM studies, LiNi 0.5Mn1.5O4 having P4332 symmetry showed that structural transition occurred reversibly from simple cubic (P4 332) to tetragonal phase (I41 / amd), whereas irreversible structural changes were observed for Fd3̄m symmetry on 3V region.

AB - Spinel LiNi0.5Mri1.5O4 powders with different space group of Fd3̄m and P4332 were synthesized by an ultrasonic spray pyrolysis method. The morphologies of the prepared powders depended on their structures; polyhedral shape for Fd3̄m and octahedral for P4332. The obtained discharge capacities of the Fd3̄m and P4332 were about 60 mAh g-1 and 60 mAh g-1, respectively. Structural changes of both compounds were investigated on 3 V region by ex situ X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM). From the ex situ XRD and HRTEM studies, LiNi 0.5Mn1.5O4 having P4332 symmetry showed that structural transition occurred reversibly from simple cubic (P4 332) to tetragonal phase (I41 / amd), whereas irreversible structural changes were observed for Fd3̄m symmetry on 3V region.

UR - https://www.scopus.com/pages/publications/15744390777

U2 - 10.1149/1.1857113

DO - 10.1149/1.1857113

M3 - Journal article

AN - SCOPUS:15744390777

SN - 1099-0062

VL - 8

SP - A163-A167

JO - Electrochemical and Solid-State Letters

JF - Electrochemical and Solid-State Letters

IS - 3

ER -

LiNi_0.5Mn_1.5O₄ showing reversible phase transition on 3 V region

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