The Effect of the Lithium Borate Surface Layer on the Electrochemical Properties of the Lithium-Ion Battery Positive Electrode Material LiNi1/3Mn1/3Co1/3O2.

Autor:	Nefedova, K. V., Zhuravlev, V. D., Murzakaev, A. M., Yagodin, V. V., Kuznetsov, M. V., Evshchik, E. Yu., Skachkov, V. M., Bushkova, O. V.
Předmět:	LITHIUM borate LITHIUM-ion batteries PROTECTIVE coatings ELECTRODES SOLID solutions
Zdroj:	Russian Journal of Electrochemistry; Nov2021, Vol. 57 Issue 11, p1055-1069, 15p
Abstrakt:	The electrochemical behavior of layer-structure LiNi1/3Mn1/3Сo1/3O2 solid solution, a positive electrode material of lithium-ion battery, with surface protective layer of amorphous lithium borate is studied. The protective coating is prepared by the eutectic incongruent melting at 750°C of a pre-synthesized compound Li3BO3, mechanically mixed with LiNi1/3Mn1/3Сo1/3O2 powder. The glassy lithium borate 3Li2O∙B2O3 is found to form island-like structures presumably localized in electrochemically active regions of the active-material particles' surface. The optimal lithium borate content, which makes possible the LiNi1/3Mn1/3Сo1/3O2 stable cycling at 0.5 C rate with the maximum discharge capacity, is found to be equal to 1 wt %. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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