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High capacity Li1.2Mn0.54Ni0.13Co0.13O2 cathode materials synthesized using mesocrystal precursors for lithium-ion batteries.
- Source :
-
Journal of Alloys & Compounds . Jul2015, Vol. 638, p298-304. 7p. - Publication Year :
- 2015
-
Abstract
- Li 1.2 Mn 0.54 Ni 0.13 Co 0.13 O 2 is synthesized with spherical mesocrystal, which is prepared by modified hydrothermal method with urea as precipitator. X-ray diffraction, scanning electron microscopy, thermogravimetry, energy-dispersive X-ray spectroscopy, transmission electron microscope, inductive coupled plasma-mass spectrometry, cyclic voltammetry, electrochemical impedance spectroscopy, and charge/discharge test are conducted to evaluate the physical and electrochemical properties of the spherical mesocrystal and resulting materials. Li 1.2 Mn 0.54 Ni 0.13 Co 0.13 O 2 synthesized with spherical mesocrystal at 190 °C delivers a high discharge capacity of 339 mA h g −1 at 20 mA g −1 and maintains a discharge capacity of 201 mA h g −1 at 100 mA g −1 . Li 1.2 Mn 0.54 Ni 0.13 Co 0.13 O 2 also exhibites excellent rate capability and cycle performance after 50 cycles, with a capacity of 150 mA h g −1 at 200 mA g −1 . All tests prove that the lithium-rich materials synthesized with spherical mesocrystal have excellent electrochemical properties. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 638
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 102312704
- Full Text :
- https://doi.org/10.1016/j.jallcom.2015.03.100