Sodium manganese oxide thin films as cathodes for Na-ion batteries

Loïc Baggetto, Kyler J. Carroll, Raymond R. Unocic, Craig A. Bridges, Ying Shirley Meng, Gabriel M. Veith

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

This paper presents the fabrication and characterization of sodium manganese oxide cathode thin films for rechargeable Na-ion batteries. Layered oxide compounds of nominal compositions Na0.6MnO2 and Na1.0MnO2 have been prepared by radio frequency magnetron sputtering and post-annealing at high temperatures under various conditions. The Na0.6MnO2 thin films possess either a hexagonal or orthorhombic structure while the Na1.0MnO2 films crystallize in a monoclinic structure, as shown by X-ray diffraction and X-ray absorption spectroscopy results. The potential profiles of the film cathodes are characterized by features similar to those measured for the powders and exhibit reversible storage capacities in the range of 50-60 μAh cm-2 μm-1, which correspond to about 120-140 mAh g-1, and are maintained over 80 cycles.

Original languageEnglish
Pages (from-to)47-57
Number of pages11
JournalECS Transactions
Volume58
Issue number12
DOIs
StatePublished - 2013

Funding

FundersFunder number
Office of Science
U.S. Department of Energy

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