Scalable synthesis and electrochemical investigations of fluorine-doped lithium manganese spinel oxide

Hae Ri Lee, Boeun Lee, Kyung Yoon Chung, Byung Won Cho, Kwan Young Lee, Si Hyoung Oh

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A scalable synthesis route for the preparation of fluorine-doped lithium manganese spinel was developed. The effect of 2.5% fluorine doping on the properties of aluminum-doped lithium manganese spinel was investigated by examining the electrochemical performance and structural changes. The electrochemical study indicates that the initial discharge capacity increases by about 5% while other properties, like the capacity retention and rate performance, remain almost unchanged. The structural studies indicate that no impurity phase was formed, along with only little morphological changes and a slight increase in the lattice parameter. The Mn K-edge absorption spectra clearly show that the average manganese oxidation state decreases as a result of fluorine doping and Mn LII,III -edge spectra indicate that the electronic structure of the fluorine-doped spinel changes significantly, which may alleviate the intrinsic structural instability of this material.

Original languageEnglish
Pages (from-to)396-403
Number of pages8
JournalElectrochimica Acta
Volume136
DOIs
Publication statusPublished - 2014 Aug 1

Fingerprint

Manganese oxide
Fluorine
Lithium
Manganese
Doping (additives)
Aluminum
Lattice constants
Electronic structure
Absorption spectra
Impurities
Oxidation
spinell

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)

Cite this

Scalable synthesis and electrochemical investigations of fluorine-doped lithium manganese spinel oxide. / Lee, Hae Ri; Lee, Boeun; Chung, Kyung Yoon; Cho, Byung Won; Lee, Kwan Young; Oh, Si Hyoung.

In: Electrochimica Acta, Vol. 136, 01.08.2014, p. 396-403.

Research output: Contribution to journalArticle

Lee, Hae Ri ; Lee, Boeun ; Chung, Kyung Yoon ; Cho, Byung Won ; Lee, Kwan Young ; Oh, Si Hyoung. / Scalable synthesis and electrochemical investigations of fluorine-doped lithium manganese spinel oxide. In: Electrochimica Acta. 2014 ; Vol. 136. pp. 396-403.
@article{99f74896e1ac46dd9d48c998020e290f,
title = "Scalable synthesis and electrochemical investigations of fluorine-doped lithium manganese spinel oxide",
abstract = "A scalable synthesis route for the preparation of fluorine-doped lithium manganese spinel was developed. The effect of 2.5{\%} fluorine doping on the properties of aluminum-doped lithium manganese spinel was investigated by examining the electrochemical performance and structural changes. The electrochemical study indicates that the initial discharge capacity increases by about 5{\%} while other properties, like the capacity retention and rate performance, remain almost unchanged. The structural studies indicate that no impurity phase was formed, along with only little morphological changes and a slight increase in the lattice parameter. The Mn K-edge absorption spectra clearly show that the average manganese oxidation state decreases as a result of fluorine doping and Mn LII,III -edge spectra indicate that the electronic structure of the fluorine-doped spinel changes significantly, which may alleviate the intrinsic structural instability of this material.",
keywords = "Electrochemical properties, Fluorine doping, Lithium manganese spinel, X-ray absorption spectroscopy",
author = "Lee, {Hae Ri} and Boeun Lee and Chung, {Kyung Yoon} and Cho, {Byung Won} and Lee, {Kwan Young} and Oh, {Si Hyoung}",
year = "2014",
month = "8",
day = "1",
doi = "10.1016/j.electacta.2014.05.106",
language = "English",
volume = "136",
pages = "396--403",
journal = "Electrochimica Acta",
issn = "0013-4686",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Scalable synthesis and electrochemical investigations of fluorine-doped lithium manganese spinel oxide

AU - Lee, Hae Ri

AU - Lee, Boeun

AU - Chung, Kyung Yoon

AU - Cho, Byung Won

AU - Lee, Kwan Young

AU - Oh, Si Hyoung

PY - 2014/8/1

Y1 - 2014/8/1

N2 - A scalable synthesis route for the preparation of fluorine-doped lithium manganese spinel was developed. The effect of 2.5% fluorine doping on the properties of aluminum-doped lithium manganese spinel was investigated by examining the electrochemical performance and structural changes. The electrochemical study indicates that the initial discharge capacity increases by about 5% while other properties, like the capacity retention and rate performance, remain almost unchanged. The structural studies indicate that no impurity phase was formed, along with only little morphological changes and a slight increase in the lattice parameter. The Mn K-edge absorption spectra clearly show that the average manganese oxidation state decreases as a result of fluorine doping and Mn LII,III -edge spectra indicate that the electronic structure of the fluorine-doped spinel changes significantly, which may alleviate the intrinsic structural instability of this material.

AB - A scalable synthesis route for the preparation of fluorine-doped lithium manganese spinel was developed. The effect of 2.5% fluorine doping on the properties of aluminum-doped lithium manganese spinel was investigated by examining the electrochemical performance and structural changes. The electrochemical study indicates that the initial discharge capacity increases by about 5% while other properties, like the capacity retention and rate performance, remain almost unchanged. The structural studies indicate that no impurity phase was formed, along with only little morphological changes and a slight increase in the lattice parameter. The Mn K-edge absorption spectra clearly show that the average manganese oxidation state decreases as a result of fluorine doping and Mn LII,III -edge spectra indicate that the electronic structure of the fluorine-doped spinel changes significantly, which may alleviate the intrinsic structural instability of this material.

KW - Electrochemical properties

KW - Fluorine doping

KW - Lithium manganese spinel

KW - X-ray absorption spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=84902437964&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84902437964&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2014.05.106

DO - 10.1016/j.electacta.2014.05.106

M3 - Article

VL - 136

SP - 396

EP - 403

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

ER -