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Safety Characteristics of the Li4Ti5O12/LiMn2O4 Li-Ion Battery

Published online by Cambridge University Press:  26 February 2011

Ilias Belharouak ,
Wenquan Lu  and
Khalil Amine
Ilias Belharouak
Affiliation:
[email protected], Argonne National Laboratory, Chemical Engineering Division, 9700 South Cass Avenue, Argonne, IL, 60439, United States, 630-252-4450, 630-252-4176
Wenquan Lu
Affiliation:
[email protected], Argonne National Laboratory, Chemical Engineering Division, 9700 South Cass Avenue, Argonne, IL, 60439, United States
Khalil Amine
Affiliation:
[email protected], Argonne National Laboratory, Chemical Engineering Division, 9700 South Cass Avenue, Argonne, IL, 60439, United States
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Abstract

Li4+xTi4O12 and Li1-yMn2O4 materials have been respectively prepared by a chemical lithiation of Li4Ti4O12 in the presence of an excess of butylithium (LiC4H9) in hexane solution and chemical delithiation of LiMn2O4 spinel using NO2BF4 oxidizer in an acetonitrile medium. The thermal gravimetric results show that Li1-yMn2O4 releases oxygen starting from 200°C with an overall oxygen loss of 6 wt% at 500 °C, whereas Li4+xTi4O12 gains oxygen starting from 200 °C with an overall oxygen gain of 4 wt % at 500 °C. The reactivity of the Li4+xTi4O12 and Li1-yMn2O4 powders in the presence of electrolytes was investigated by a differential scanning calorimetry (DSC) between room temperature and 375°C, and compared to a lithiated graphite in the case of the Li4+xTi4O12 negative electrode material.

Keywords

energy-storagedifferential thermal analysis (DTA)x-ray diffraction (XRD)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 972: Symposium AA – Solid-State Ionics—2006 , 2006 , 0972-AA13-04
Copyright
Copyright © Materials Research Society 2007

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