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Development of Li(Ni1/3Mn1/3Co1/3-x Na (x) )O-2 cathode materials by synthesizing with glycine nitrate combustion technique for Li-ion rechargeable batteries

Thng Amaraweera ; A. Wijayasinghe ; Bengt-Erik Mellander (Institutionen för fysik, Subatomär fysik och plasmafysik (Chalmers)) ; MAKL Dissanayake
Ionics (0947-7047). Vol. 23 (2017), 11, p. 3001-3011.
[Artikel, refereegranskad vetenskaplig]

Glycine nitrate combustion technique was investigated for synthesizing Li(Ni1/3Mn1/3Co1/3-x Na (x) )O-2, x = 0-0.11 based transition metal oxide cathode materials for the rechargeable Li-ion battery (LIB) under this study. X-ray diffraction and scanning electron microscopy analysis showed that the synthesized powder samples were well crystalline rather spherical secondary particles. These secondary particles were composed of softly agglomerated nano-scale primary particles. The room temperature electrical conductivity of these Na-doped materials was significantly higher than that of the base material (2.60 x 10(-7) S/cm). Among them, the x = 0.04 material reported the highest electrical conductivity of 1.02 x 10(-03) S cm(-1). The half-cell assembled with cathode fabricated from Li(Ni1/3Mn1/3Co1/3)O-2 base material showed an initial discharge capacity of 187 mA h(-1) g(-1) with 25 mA h(-1) g(-1) irreversible capacity loss and 88.47% columbic efficiency at C/5 rate with a cut-off voltage of 2.5-4.6 V at 25 A degrees C. The electrochemical behavior of the x = 0.04 cathode showed a comparable initial discharge capacity as of the base material but with improved capacity retention.

Nyckelord: Lithium ion rechargeable battery, Cathode material, Transition metal oxide, Glycine nitrate combustion method, Cell performance

Denna post skapades 2017-11-21.
CPL Pubid: 253284


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Institutionen för fysik, Subatomär fysik och plasmafysik (Chalmers)



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