The Influence of Surface Chemistry on the Rate Capability of LiNi[subscript 0.5]Mn[subscript 0.5]O[subscript 2] for Lithium Rechargeable Batteries
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Subsequent annealing at Formula enhances the rate capability of LiNi[subscript 0.5]Mn[subscript 0.5]O[subscript 2], delivering 180 mAh/g at 55[degrees]C and 8C rate compared to 50 mAh/g of LiNi[subscript 0.5]Mn[subscript 0.5]O[subscript 2] quenched from 1000[degrees]C . Although Rietvled refinement analyses of X-ray diffraction (XRD) data showed that there were no significant changes in the lattice parameters and cation distributions of the layered structure before and after annealing, XRD and X-ray photoelectron spectroscopy revealed that annealing significantly reduced surface impurity phases such as lithium carbonate and Mn[superscript +3]-containing species. The influence of surface chemistry changes on the rate capability of LiNi[subscript 0.5]Mn[subscript 0.5]O[subscript 2] was discussed.
Date issued
2010-08Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering; Massachusetts Institute of Technology. Department of Mechanical EngineeringJournal
Electrochemical and Solid-State Letters
Publisher
Electrochemical Society
Citation
Yabuuchi, Naoaki, Yi-Chun Lu, Azzam N. Mansour, Tadashi Kawaguchi, and Yang Shao-Horn. The Influence of Surface Chemistry on the Rate Capability of LiNi[subscript 0.5]Mn[subscript 0.5]O[subscript 2] for Lithium Rechargeable Batteries. Electrochemical and Solid-State Letters 13, no. 11 (2010): A158.© 2010 ECS - The Electrochemical Society.
Version: Final published version
ISSN
10990062