Electrochemical and structural study of the 3.3 V reduction step in defective LixMn2O4 and LiMn2O(4-y)Py compounds

M. R. Palacín; G. G. Amatucci; M. Anne; Y. Chabre; L. Seguin; P. Strobel; J. M. Tarascon; G. Vaughan

doi:10.1016/S0378-7753(99)00233-5

Electrochemical and structural study of the 3.3 V reduction step in defective Li_xMn₂O₄ and LiMn₂O_(4-y)P_y compounds

M. R. Palacín
, G. G. Amatucci
, M. Anne
, Y. Chabre
, L. Seguin
, P. Strobel
, J. M. Tarascon
, G. Vaughan

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

21 Scopus citations

Abstract

Non-stoichiometric or fluorine-substituted Li_xMn₂O₄ are known to present a reversible redox step at 4.5 V as well as a reduction step at 3.3 V appearing to the expense of the usual 4.0-4.15 V. We present results of very slow stepwise potentiodynamic studies which allowed to localise the oxidation step associated to the 3.3 V reduction level close to 3.95 V. We propose the cubic spinel lattice parameter value as the key parameter for knowing a priori if these redox states will be present or not, with 8.215 Å as threshold value. In situ XRD studies performed across the 3.3 ↔ 3.95 V redox step indicate that these additional states are probably associated to structural features.

Original language	English (US)
Pages (from-to)	627-631
Number of pages	5
Journal	Journal of Power Sources
Volume	81-82
DOIs	https://doi.org/10.1016/S0378-7753(99)00233-5
State	Published - Sep 1999
Externally published	Yes
Event	Proceedings of the 1998 Ninth International Meeting on Lithium Batteries - Edingburgh, United Kingdom Duration: Jul 12 1998 → Jul 17 1998

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

Keywords

Electrochemical potential spectroscopy
In situ XRD
LiMnO
LiMnOF

Access to Document

10.1016/S0378-7753(99)00233-5

Cite this

@article{1d5be7b6769543e3a37f1a3d934fd3f0,

title = "Electrochemical and structural study of the 3.3 V reduction step in defective LixMn2O4 and LiMn2O(4-y)Py compounds",

abstract = "Non-stoichiometric or fluorine-substituted LixMn2O4 are known to present a reversible redox step at 4.5 V as well as a reduction step at 3.3 V appearing to the expense of the usual 4.0-4.15 V. We present results of very slow stepwise potentiodynamic studies which allowed to localise the oxidation step associated to the 3.3 V reduction level close to 3.95 V. We propose the cubic spinel lattice parameter value as the key parameter for knowing a priori if these redox states will be present or not, with 8.215 {\AA} as threshold value. In situ XRD studies performed across the 3.3 ↔ 3.95 V redox step indicate that these additional states are probably associated to structural features.",

keywords = "Electrochemical potential spectroscopy, In situ XRD, LiMnO, LiMnOF",

author = "Palac{\'i}n, \{M. R.\} and Amatucci, \{G. G.\} and M. Anne and Y. Chabre and L. Seguin and P. Strobel and Tarascon, \{J. M.\} and G. Vaughan",

note = "Funding Information: We acknowledge C. Masquelier and G. Rousse for very interesting and fruitful discussions. One of us (M.R.P.) is grateful to the Generalitat de Catalunya for a RED contract.; Proceedings of the 1998 Ninth International Meeting on Lithium Batteries ; Conference date: 12-07-1998 Through 17-07-1998",

year = "1999",

month = sep,

doi = "10.1016/S0378-7753(99)00233-5",

language = "English (US)",

volume = "81-82",

pages = "627--631",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Electrochemical and structural study of the 3.3 V reduction step in defective LixMn2O4 and LiMn2O(4-y)Py compounds

AU - Palacín, M. R.

AU - Amatucci, G. G.

AU - Anne, M.

AU - Chabre, Y.

AU - Seguin, L.

AU - Strobel, P.

AU - Tarascon, J. M.

AU - Vaughan, G.

N1 - Funding Information: We acknowledge C. Masquelier and G. Rousse for very interesting and fruitful discussions. One of us (M.R.P.) is grateful to the Generalitat de Catalunya for a RED contract.

PY - 1999/9

Y1 - 1999/9

N2 - Non-stoichiometric or fluorine-substituted LixMn2O4 are known to present a reversible redox step at 4.5 V as well as a reduction step at 3.3 V appearing to the expense of the usual 4.0-4.15 V. We present results of very slow stepwise potentiodynamic studies which allowed to localise the oxidation step associated to the 3.3 V reduction level close to 3.95 V. We propose the cubic spinel lattice parameter value as the key parameter for knowing a priori if these redox states will be present or not, with 8.215 Å as threshold value. In situ XRD studies performed across the 3.3 ↔ 3.95 V redox step indicate that these additional states are probably associated to structural features.

AB - Non-stoichiometric or fluorine-substituted LixMn2O4 are known to present a reversible redox step at 4.5 V as well as a reduction step at 3.3 V appearing to the expense of the usual 4.0-4.15 V. We present results of very slow stepwise potentiodynamic studies which allowed to localise the oxidation step associated to the 3.3 V reduction level close to 3.95 V. We propose the cubic spinel lattice parameter value as the key parameter for knowing a priori if these redox states will be present or not, with 8.215 Å as threshold value. In situ XRD studies performed across the 3.3 ↔ 3.95 V redox step indicate that these additional states are probably associated to structural features.

KW - Electrochemical potential spectroscopy

KW - In situ XRD

KW - LiMnO

KW - LiMnOF

UR - https://www.scopus.com/pages/publications/0033184932

UR - https://www.scopus.com/pages/publications/0033184932#tab=citedBy

U2 - 10.1016/S0378-7753(99)00233-5

DO - 10.1016/S0378-7753(99)00233-5

M3 - Conference article

AN - SCOPUS:0033184932

SN - 0378-7753

VL - 81-82

SP - 627

EP - 631

JO - Journal of Power Sources

JF - Journal of Power Sources

T2 - Proceedings of the 1998 Ninth International Meeting on Lithium Batteries

Y2 - 12 July 1998 through 17 July 1998

ER -