Low temperature lithium manganese cobalt oxide spinels, Li4-xMn5-2xCo3xO12 (0 ≤ x ≤ 1), for use as cathode materials in rechargeable lithium batteries

A. D. Robertson, A. R. Armstrong, P. G. Bruce*

*Corresponding author for this work

Research output: Contribution to journalConference article

15 Citations (Scopus)

Abstract

Low temperature synthesis of the lithium-rich cubic spinel Li4Mn5O12 with an oxidation state very close to +4 is described. The effect of doping this compound with cobalt according to the solid solution mechanism Li4-xMn5-2xCo3xO12 up to the solid solution limit, LiMnCoO4, has also been explored. The evolution of the structure and electrochemistry with increasing cobalt doping is described. With increasing x there is increasing population of the tetrahedral 8a site by transition metal ions reaching 25% occupancy by Co at LiMnCoO4 with corresponding displacement of Li to 16d sites. The optimum performance was obtained for the composition Li3.75Mn4.5Co0.75O12 which yields a capacity of 150 mA g-1 at a rate of 25 mA g-1 (equivalent to C/6) with no perceptible capacity loss, in sharp contrast to the pure Mn materials.

Original languageEnglish
Pages (from-to)332-335
Number of pages4
JournalJournal of Power Sources
Volume97-98
DOIs
Publication statusPublished - 1 Jul 2001
Externally publishedYes
Event10th International Meeting on Lithium Batteries - Como, Italy
Duration: 28 May 20012 Jun 2001

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cobalt oxides
Lithium batteries
lithium batteries
manganese oxides
Manganese
Cobalt
Lithium
Solid solutions
Cathodes
lithium
cathodes
Doping (additives)
Oxides
Electrochemistry
solid solutions
cobalt
Transition metals
Metal ions
electrochemistry
Oxidation

Cite this

@article{3ad79dc12eb04b8a8f4dc63267d5603c,
title = "Low temperature lithium manganese cobalt oxide spinels, Li4-xMn5-2xCo3xO12 (0 ≤ x ≤ 1), for use as cathode materials in rechargeable lithium batteries",
abstract = "Low temperature synthesis of the lithium-rich cubic spinel Li4Mn5O12 with an oxidation state very close to +4 is described. The effect of doping this compound with cobalt according to the solid solution mechanism Li4-xMn5-2xCo3xO12 up to the solid solution limit, LiMnCoO4, has also been explored. The evolution of the structure and electrochemistry with increasing cobalt doping is described. With increasing x there is increasing population of the tetrahedral 8a site by transition metal ions reaching 25{\%} occupancy by Co at LiMnCoO4 with corresponding displacement of Li to 16d sites. The optimum performance was obtained for the composition Li3.75Mn4.5Co0.75O12 which yields a capacity of 150 mA g-1 at a rate of 25 mA g-1 (equivalent to C/6) with no perceptible capacity loss, in sharp contrast to the pure Mn materials.",
author = "Robertson, {A. D.} and Armstrong, {A. R.} and Bruce, {P. G.}",
year = "2001",
month = "7",
day = "1",
doi = "10.1016/S0378-7753(01)00628-0",
language = "English",
volume = "97-98",
pages = "332--335",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",

}

Low temperature lithium manganese cobalt oxide spinels, Li4-xMn5-2xCo3xO12 (0 ≤ x ≤ 1), for use as cathode materials in rechargeable lithium batteries. / Robertson, A. D.; Armstrong, A. R.; Bruce, P. G.

In: Journal of Power Sources, Vol. 97-98, 01.07.2001, p. 332-335.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Low temperature lithium manganese cobalt oxide spinels, Li4-xMn5-2xCo3xO12 (0 ≤ x ≤ 1), for use as cathode materials in rechargeable lithium batteries

AU - Robertson, A. D.

AU - Armstrong, A. R.

AU - Bruce, P. G.

PY - 2001/7/1

Y1 - 2001/7/1

N2 - Low temperature synthesis of the lithium-rich cubic spinel Li4Mn5O12 with an oxidation state very close to +4 is described. The effect of doping this compound with cobalt according to the solid solution mechanism Li4-xMn5-2xCo3xO12 up to the solid solution limit, LiMnCoO4, has also been explored. The evolution of the structure and electrochemistry with increasing cobalt doping is described. With increasing x there is increasing population of the tetrahedral 8a site by transition metal ions reaching 25% occupancy by Co at LiMnCoO4 with corresponding displacement of Li to 16d sites. The optimum performance was obtained for the composition Li3.75Mn4.5Co0.75O12 which yields a capacity of 150 mA g-1 at a rate of 25 mA g-1 (equivalent to C/6) with no perceptible capacity loss, in sharp contrast to the pure Mn materials.

AB - Low temperature synthesis of the lithium-rich cubic spinel Li4Mn5O12 with an oxidation state very close to +4 is described. The effect of doping this compound with cobalt according to the solid solution mechanism Li4-xMn5-2xCo3xO12 up to the solid solution limit, LiMnCoO4, has also been explored. The evolution of the structure and electrochemistry with increasing cobalt doping is described. With increasing x there is increasing population of the tetrahedral 8a site by transition metal ions reaching 25% occupancy by Co at LiMnCoO4 with corresponding displacement of Li to 16d sites. The optimum performance was obtained for the composition Li3.75Mn4.5Co0.75O12 which yields a capacity of 150 mA g-1 at a rate of 25 mA g-1 (equivalent to C/6) with no perceptible capacity loss, in sharp contrast to the pure Mn materials.

U2 - 10.1016/S0378-7753(01)00628-0

DO - 10.1016/S0378-7753(01)00628-0

M3 - Conference article

AN - SCOPUS:0035395050

VL - 97-98

SP - 332

EP - 335

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

ER -