Synthesis, microstructure, and electrochemical performance of Li-rich layered oxide cathode materials for Li-ion batteries

Li-rich layered oxides Li 1.2 Mn 0.54 Ni 0.13 Co 0.13 O 2 were synthesized by modified Pechini method using various compositions of the reaction mixture. Difference in the electrochemical performance of cathodes on their basis is explained by different morphology and microstructure of the materials....

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Bibliographic Details
Published in:Russian chemical bulletin 2019-02, Vol.68 (2), p.301-312
Main Authors: Makhonina, Е. V., Pechen, L. S., Volkov, V. V., Rumyantsev, А. М., Koshtyal, Yu. М., Dmitrienko, А. О., Politov, Yu. А., Pervov, V. S., Eremenko, I. L.
Format: Article
Language:English
Subjects:
Cathodes
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Crystal defects
Electrochemical analysis
Electrode materials
Electrons
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Inorganic Chemistry
Lithium-ion batteries
Microstructure
Morphology
Organic Chemistry
Porous materials
Rechargeable batteries
Structural hierarchy
Tin
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Summary:Li-rich layered oxides Li 1.2 Mn 0.54 Ni 0.13 Co 0.13 O 2 were synthesized by modified Pechini method using various compositions of the reaction mixture. Difference in the electrochemical performance of cathodes on their basis is explained by different morphology and microstructure of the materials. The porous hierarchical structure favors a better electrochemical performance. The presence of defects, including crystal twins, in the samples is considered to be a major reason that leads to their poor cyclability and rate capability.
ISSN:1066-5285
1573-9171
DOI:10.1007/s11172-019-2386-6