Improvement of electrochemical properties of LiNi0.5Mn1.5O4 spinel material by fluorine substitution

Sung Woo Oh; Sang Ho Park; Jung Hyun Kim; Young Chan Bae; Yang Kook Sun

doi:10.1016/j.jpowsour.2005.07.056

Improvement of electrochemical properties of LiNi_0.5Mn_1.5O₄ spinel material by fluorine substitution

Sung Woo Oh
, Sang Ho Park
, Jung Hyun Kim
, Young Chan Bae
, Yang Kook Sun^*

^*Corresponding author for this work

Division of Chemical Engineering

Hanyang University

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

122 Scopus citations

Abstract

LiNi_0.5Mn_1.5O_4-xF_x (0 ≤ x ≤0.1) cathodes, synthesized by ultrasonic spray pyrolysis at 900 °C, exhibit superior structural and electrochemical properties. The samples are characterized by X-ray diffraction, scanning electron microscopy, differential scanning calorimetry, and electrochemical measurements. During Li⁺ extraction, LiNi_0.5Mn_1.5O_4-xF_x has a smaller lattice variation and area-specific impedance than LiNi_0.5Mn_1.5O₄. This enhances the rate capability, especially at high C-rates. LiNi_0.5Mn_1.5O_4-xF_x also exhibits better resistance than LiNi_0.5Mn_1.5O₄ to attack by HF.

Original language	English
Pages (from-to)	464-470
Number of pages	7
Journal	Journal of Power Sources
Volume	157
Issue number	1
DOIs	https://doi.org/10.1016/j.jpowsour.2005.07.056
State	Published - 2006.06.19

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

5 V spinel
Cathode material
Fluorine substitution
Lithium secondary battery
Rate capability
Spray pyrolysis

Access to Document

10.1016/j.jpowsour.2005.07.056

Cite this

@article{0a9cfa0f768f4a678a8637408334a13c,

title = "Improvement of electrochemical properties of LiNi0.5Mn1.5O4 spinel material by fluorine substitution",

abstract = "LiNi0.5Mn1.5O4-xFx (0 ≤ x ≤0.1) cathodes, synthesized by ultrasonic spray pyrolysis at 900 °C, exhibit superior structural and electrochemical properties. The samples are characterized by X-ray diffraction, scanning electron microscopy, differential scanning calorimetry, and electrochemical measurements. During Li+ extraction, LiNi0.5Mn1.5O4-xFx has a smaller lattice variation and area-specific impedance than LiNi0.5Mn1.5O4. This enhances the rate capability, especially at high C-rates. LiNi0.5Mn1.5O4-xFx also exhibits better resistance than LiNi0.5Mn1.5O4 to attack by HF.",

keywords = "5 V spinel, Cathode material, Fluorine substitution, Lithium secondary battery, Rate capability, Spray pyrolysis",

author = "Oh, \{Sung Woo\} and Park, \{Sang Ho\} and Kim, \{Jung Hyun\} and Bae, \{Young Chan\} and Sun, \{Yang Kook\}",

year = "2006",

month = jun,

day = "19",

doi = "10.1016/j.jpowsour.2005.07.056",

language = "English",

volume = "157",

pages = "464--470",

journal = "Journal of Power Sources",

issn = "0378-7753",

number = "1",

}

TY - JOUR

T1 - Improvement of electrochemical properties of LiNi0.5Mn1.5O4 spinel material by fluorine substitution

AU - Oh, Sung Woo

AU - Park, Sang Ho

AU - Kim, Jung Hyun

AU - Bae, Young Chan

AU - Sun, Yang Kook

PY - 2006/6/19

Y1 - 2006/6/19

N2 - LiNi0.5Mn1.5O4-xFx (0 ≤ x ≤0.1) cathodes, synthesized by ultrasonic spray pyrolysis at 900 °C, exhibit superior structural and electrochemical properties. The samples are characterized by X-ray diffraction, scanning electron microscopy, differential scanning calorimetry, and electrochemical measurements. During Li+ extraction, LiNi0.5Mn1.5O4-xFx has a smaller lattice variation and area-specific impedance than LiNi0.5Mn1.5O4. This enhances the rate capability, especially at high C-rates. LiNi0.5Mn1.5O4-xFx also exhibits better resistance than LiNi0.5Mn1.5O4 to attack by HF.

AB - LiNi0.5Mn1.5O4-xFx (0 ≤ x ≤0.1) cathodes, synthesized by ultrasonic spray pyrolysis at 900 °C, exhibit superior structural and electrochemical properties. The samples are characterized by X-ray diffraction, scanning electron microscopy, differential scanning calorimetry, and electrochemical measurements. During Li+ extraction, LiNi0.5Mn1.5O4-xFx has a smaller lattice variation and area-specific impedance than LiNi0.5Mn1.5O4. This enhances the rate capability, especially at high C-rates. LiNi0.5Mn1.5O4-xFx also exhibits better resistance than LiNi0.5Mn1.5O4 to attack by HF.

KW - 5 V spinel

KW - Cathode material

KW - Fluorine substitution

KW - Lithium secondary battery

KW - Rate capability

KW - Spray pyrolysis

UR - https://www.scopus.com/pages/publications/33744965064

U2 - 10.1016/j.jpowsour.2005.07.056

DO - 10.1016/j.jpowsour.2005.07.056

M3 - Journal article

AN - SCOPUS:33744965064

SN - 0378-7753

VL - 157

SP - 464

EP - 470

JO - Journal of Power Sources

JF - Journal of Power Sources

IS - 1

ER -