M3+-modified LiMn2O4 spinel intercalation cathodes: I. Admetal effects on morphology and electrochemical performance

A. D. Robertson; S. H. Lu; W. F. Averill; W. F. Howard

doi:10.1149/1.1838040

M3+-modified LiMn2O4 spinel intercalation cathodes: I. Admetal effects on morphology and electrochemical performance

A. D. Robertson^*, S. H. Lu, W. F. Averill, W. F. Howard

^*Corresponding author for this work

Academic Development

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

Abstract

Low levels of trivalent cations were utilized to stabilize LiMn2O4 spinel cathode materials against capacity decline during electrochemical cycling. Of the several single-phase products obtained, only those with Cr3+ and Ga3+ prevented capacity fade, and only LiCr0.02Mn1.98O4 exhibited acceptable initial reversible capacity. The external particle morphology was unchanged by the preparation or the admetal, and the internal structures were all converted to cong tou (onion) configurations during product synthesis. Grain size played a surprising role in cathode performance:

Original language	English
Pages (from-to)	3500-3505
Number of pages	6
Journal	Journal of the Electrochemical Society
Volume	144
Issue number	10
DOIs	https://doi.org/10.1149/1.1838040
Publication status	Published - 1 Oct 1997

Keywords

electrochemical performance
electrochemical cycling
cathode performance

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10.1149/1.1838040

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abstract = "Low levels of trivalent cations were utilized to stabilize LiMn2O4 spinel cathode materials against capacity decline during electrochemical cycling. Of the several single-phase products obtained, only those with Cr3+ and Ga3+ prevented capacity fade, and only LiCr0.02Mn1.98O4 exhibited acceptable initial reversible capacity. The external particle morphology was unchanged by the preparation or the admetal, and the internal structures were all converted to cong tou (onion) configurations during product synthesis. Grain size played a surprising role in cathode performance: ",

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AU - Robertson, A. D.

AU - Lu, S. H.

AU - Averill, W. F.

AU - Howard, W. F.

PY - 1997/10/1

Y1 - 1997/10/1

N2 - Low levels of trivalent cations were utilized to stabilize LiMn2O4 spinel cathode materials against capacity decline during electrochemical cycling. Of the several single-phase products obtained, only those with Cr3+ and Ga3+ prevented capacity fade, and only LiCr0.02Mn1.98O4 exhibited acceptable initial reversible capacity. The external particle morphology was unchanged by the preparation or the admetal, and the internal structures were all converted to cong tou (onion) configurations during product synthesis. Grain size played a surprising role in cathode performance:

AB - Low levels of trivalent cations were utilized to stabilize LiMn2O4 spinel cathode materials against capacity decline during electrochemical cycling. Of the several single-phase products obtained, only those with Cr3+ and Ga3+ prevented capacity fade, and only LiCr0.02Mn1.98O4 exhibited acceptable initial reversible capacity. The external particle morphology was unchanged by the preparation or the admetal, and the internal structures were all converted to cong tou (onion) configurations during product synthesis. Grain size played a surprising role in cathode performance:

KW - electrochemical performance

KW - electrochemical cycling

KW - cathode performance

U2 - 10.1149/1.1838040

DO - 10.1149/1.1838040

M3 - Article

VL - 144

SP - 3500

EP - 3505

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

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