Abstract
The surface of Li(Ni0.4Co0.2Mn0.4)O2 was coated with amorphous aluminum oxide using Al-isopropoxide. The effect of the surface coating on the cycling performance and high-temperature storage characteristics was investigated using coin-type cells. The surface-coated materials showed superior capacity retention at 55°C as well as at room temperature and limited impedance rise during high-temperature storage compared with the uncoated material. From the a.c. impedance measurement, it was found that the uncoated material exhibited very large increase in the cathode/electrolyte interfacial impedance during cycling whereas the surface-coated materials showed a limited increase in the interfacial impedance.
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Kang, SH., Amine, K. (2006). IMPROVED ELETROCHEMICAL PROPERTIES OF SURFACE-COATED Li(Ni,Co,Mn)O2 CATHODE MATERIAL FOR Li SECONDARY BATTERIES. In: Barsukov, I.V., Johnson, C.S., Doninger, J.E., Barsukov, V.Z. (eds) New Carbon Based Materials for Electrochemical Energy Storage Systems: Batteries, Supercapacitors and Fuel Cells. NATO Science Series II: Mathematics, Physics and Chemistry, vol 229. Springer, Dordrecht. https://doi.org/10.1007/1-4020-4812-2_41
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DOI: https://doi.org/10.1007/1-4020-4812-2_41
Publisher Name: Springer, Dordrecht
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