The effect of particle size and morphology on the rate capability of 4.7 V LiMn1.5+δNi0.5-δO4 spinel lithium-ion battery cathodes

M. Kunduraci; G. G. Amatucci

doi:https://doi.org/10.1016/j.electacta.2007.12.057

The effect of particle size and morphology on the rate capability of 4.7 V LiMn_1.5+δNi_0.5-δO₄ spinel lithium-ion battery cathodes

M. Kunduraci, G. G. Amatucci

School of Engineering, Materials Science & Engineering

Rutgers, The State University

Research output: Contribution to journal › Article › peer-review

158 Scopus citations

Abstract

The electrochemical impact of lithium-ion diffusivity on the discharge rate capabilities of cation ordered (P4₃32) and disordered (Fd3m) LiMn_1.5+δNi_0.5-δO₄ spinels were studied. Potentiostatic Intermittent Titration (PITT) measurements revealed up to 2 orders-of-magnitude lower lithium diffusion coefficient for the ordered spinel polymorph. The optimum structure of the high voltage spinel is resolved with respect to these ionic studies and our previous electronic transport studies. Modification of the morphology and pore dimensions was accomplished through the tuning of the ethylene glycol used for the synthesis of nanostructured spinel in the modified Pechini process. Glycol will be shown to play a major role on the energy and power density of LiMn_1.5+δNi_0.5-δO₄ electrodes.

Original language	American English
Pages (from-to)	4193-4199
Number of pages	7
Journal	Electrochimica Acta
Volume	53
Issue number	12
DOIs	https://doi.org/10.1016/j.electacta.2007.12.057
State	Published - May 1 2008

ASJC Scopus subject areas

Chemical Engineering(all)
Electrochemistry

Keywords

Cation ordering
Lithium-ion battery
Morphology
Rate capability
Spinel

Access to Document

https://doi.org/10.1016/j.electacta.2007.12.057

Cite this

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title = "The effect of particle size and morphology on the rate capability of 4.7 V LiMn1.5+δNi0.5-δO4 spinel lithium-ion battery cathodes",

abstract = "The electrochemical impact of lithium-ion diffusivity on the discharge rate capabilities of cation ordered (P4332) and disordered (Fd3m) LiMn1.5+δNi0.5-δO4 spinels were studied. Potentiostatic Intermittent Titration (PITT) measurements revealed up to 2 orders-of-magnitude lower lithium diffusion coefficient for the ordered spinel polymorph. The optimum structure of the high voltage spinel is resolved with respect to these ionic studies and our previous electronic transport studies. Modification of the morphology and pore dimensions was accomplished through the tuning of the ethylene glycol used for the synthesis of nanostructured spinel in the modified Pechini process. Glycol will be shown to play a major role on the energy and power density of LiMn1.5+δNi0.5-δO4 electrodes.",

keywords = "Cation ordering, Lithium-ion battery, Morphology, Rate capability, Spinel",

author = "M. Kunduraci and Amatucci, {G. G.}",

note = "Funding Information: The authors would like to thank the U.S. Government for financial support of this research.",

year = "2008",

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AU - Kunduraci, M.

AU - Amatucci, G. G.

N1 - Funding Information: The authors would like to thank the U.S. Government for financial support of this research.

PY - 2008/5/1

Y1 - 2008/5/1

N2 - The electrochemical impact of lithium-ion diffusivity on the discharge rate capabilities of cation ordered (P4332) and disordered (Fd3m) LiMn1.5+δNi0.5-δO4 spinels were studied. Potentiostatic Intermittent Titration (PITT) measurements revealed up to 2 orders-of-magnitude lower lithium diffusion coefficient for the ordered spinel polymorph. The optimum structure of the high voltage spinel is resolved with respect to these ionic studies and our previous electronic transport studies. Modification of the morphology and pore dimensions was accomplished through the tuning of the ethylene glycol used for the synthesis of nanostructured spinel in the modified Pechini process. Glycol will be shown to play a major role on the energy and power density of LiMn1.5+δNi0.5-δO4 electrodes.

AB - The electrochemical impact of lithium-ion diffusivity on the discharge rate capabilities of cation ordered (P4332) and disordered (Fd3m) LiMn1.5+δNi0.5-δO4 spinels were studied. Potentiostatic Intermittent Titration (PITT) measurements revealed up to 2 orders-of-magnitude lower lithium diffusion coefficient for the ordered spinel polymorph. The optimum structure of the high voltage spinel is resolved with respect to these ionic studies and our previous electronic transport studies. Modification of the morphology and pore dimensions was accomplished through the tuning of the ethylene glycol used for the synthesis of nanostructured spinel in the modified Pechini process. Glycol will be shown to play a major role on the energy and power density of LiMn1.5+δNi0.5-δO4 electrodes.

KW - Cation ordering

KW - Lithium-ion battery

KW - Morphology

KW - Rate capability

KW - Spinel

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JO - Electrochimica Acta

JF - Electrochimica Acta

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