Abstract
We report the synthesis and characterization of the hollow micrometer-sized (Mn0.5Ni0.4Co0.1)CO3 precursor, and one of its promising lithium-enriched phases. The chemical composition of the resulting lithiated final material was Li1.2(Mn0.5Ni 0.4Co0.1)O2+y. Lithium half cells with cathodes comprised of these hollow particles as the active intercalation material showed a reversible capacity of 183 mAh/g when cycled between 2.0 V and 4.6 V. X-ray diffraction patterns and the electrochemical data of Li1.2(Mn 0.5Ni0.4Co0.1)O2+y were consistent with the existence of the Li2MnO3-type integrated component that was activated during the initial charging of the cells. The results presented herein demonstrate a method to synthesize multicomponent, multiphase materials with hollow internal morphologies that can reversibly and stably be cycled with high gravimetric capacities as the active cathode material in lithium-ion batteries.
Original language | English |
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Pages (from-to) | 1426-1431 |
Number of pages | 6 |
Journal | Electrochimica Acta |
Volume | 56 |
Issue number | 3 |
DOIs | |
State | Published - Jan 1 2011 |
Externally published | Yes |
Funding
This research was funded by the U.S. Department of Energy , FreedomCAR , and Vehicle Technologies Office . We acknowledge Nancy L. Dietz Rago for SEM and EDXS analysis. Some electron microscopy was accomplished at the Electron Microscopy Center for Materials Research at Argonne National Laboratory, a U.S. Department of Energy Office of Science Laboratory. Argonne National Laboratory is operated for the U.S. Department of Energy by UChicago Argonne, LLC, under contract DE-ACOZ-06CH11357.
Keywords
- Co-precipitation
- Li(MnNiCo)O
- LiMnO
- Lithium-ion electrodes
- Multicomponent composites