Synthesis of Li(Ni1/3Mn1/3Co1/3-xBax)O2 cathode materials for lithium-ion rechargeable battery by glycine-nitrate combustion process

This study was based on developing Li(Ni 1/3 Mn 1/3 Co 1/3- x Ba x )O 2 ( x  = 0.04, 0.08, 0.11, 0.22, and 0.33) materials by substituting expensive Co with Ba, for the use in the cathode of rechargeable lithium-ion batteries (LIBs). Glycine-nitrate combustion method, which is a low-cost combustion...

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Bibliographic Details
Published in:Ionics 2019-06, Vol.25 (6), p.2501-2507
Main Authors: Amaraweera, T. H. N. G., Wijayasinghe, Athula, Millander, B.-E.
Format: Article
Language:English
Subjects:
Cathodes
Chemistry
Chemistry and Materials Science
Combustion
Condensed Matter Physics
Electrical resistivity
Electrochemistry
Electrode materials
Energy Storage
Glycine
High voltages
Lithium
Lithium-ion batteries
Optical and Electronic Materials
Original Paper
Rechargeable batteries
Renewable and Green Energy
Substitutes
Synthesis
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Summary:This study was based on developing Li(Ni 1/3 Mn 1/3 Co 1/3- x Ba x )O 2 ( x  = 0.04, 0.08, 0.11, 0.22, and 0.33) materials by substituting expensive Co with Ba, for the use in the cathode of rechargeable lithium-ion batteries (LIBs). Glycine-nitrate combustion method, which is a low-cost combustion technique, was employed to synthesize spherical shaped micron size secondary particles formed by densely agglomerated primary particles. The phase analysis performed by the X-ray diffractometry revealed the formation of the required layered phase of R-3m structure with trace amounts of a secondary phase. Furthermore, these Ba-substituted novel materials showed considerably higher electrical conductivity than those of the Li(Ni 1/3 Co 1/3 Mn 1/3 )O 2 base material. In the cell performance studies, the Ba-substituted cathode materials synthesized in this study showed slightly lower initial discharge capacity of 162.4 mA h g −1 but with considerably improved cycle performance compared to those of the Li(Ni 1/3 Co 1/3 Mn 1/3 )O 2 base material (187.7 mA h g −1 ). More importantly, the Li(Ni 1/3 Mn 1/3 Co 1/3- x Ba x )O 2 , x  = 0.04 material clearly showed its ability to eliminate and prevent structural transformation usually associated with excess Li extraction at potentials above 4.5 V. Therefore, the Li(Ni 1/3 Mn 1/3 Co 1/3- x Ba x )O 2 , x  = 0.04 material can be proposed as a potential candidate for the high-voltage cathode application of LIB.
ISSN:0947-7047
1862-0760
DOI:10.1007/s11581-018-2800-3