Influence of the composition on the electrochemical properties of cathode materials {sub x}Li{sub 2}MnO{sub 3}•(1–x)LiMn{sub 1/3}Ni{sub 1/3}Co{sub 1/3}O{sub 2} for lithium-ion batteries

Lithium-rich transition metal complex oxides of the general composition xLi{sub 2}MnO{sub 3}• •(1–x)LiMO{sub 2} (M = Mn{sub a}Ni{sub b}Co{sub c}, a + b + c = 1) were synthesized by coprecipitation and modified Pechini method. The influence of the oxide phase composition on their electrochemical perf...

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Bibliographic Details
Published in:Russian chemical bulletin 2019-02, Vol.68 (2)
Main Authors: Pechen, L. S., Makhonina, E. V., Rumyantsev, A. M., Koshtyal, Yu. M., Volkov, V. V., Goloveshkin, A. S., Pervov, V. S., Eremenko, I. L.
Format: Article
Language:English
Subjects:
CATHODES
COMPLEXES
COPRECIPITATION
ELECTROCHEMISTRY
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
LITHIUM ION BATTERIES
MATERIALS
OXIDES
SYNTHESIS
TRANSITION ELEMENTS
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Summary:Lithium-rich transition metal complex oxides of the general composition xLi{sub 2}MnO{sub 3}• •(1–x)LiMO{sub 2} (M = Mn{sub a}Ni{sub b}Co{sub c}, a + b + c = 1) were synthesized by coprecipitation and modified Pechini method. The influence of the oxide phase composition on their electrochemical performance as cathode materials was studied in lithium half-cells. Effects of the synthetic approach and synthesis conditions on the morphology and electrochemical characteristics of the materials obtained were considered. The composition 0.35Li{sub 2}MnO{sub 3}• •0.65LiMn{sub 1/3}Ni{sub 1/3}Co{sub 1/3}O{sub 2} demonstrates the highest discharge capacity retention during cycling. The samples with discharge capacity of 290 mA h g{sup –1} were obtained.
ISSN:1066-5285
1573-9171