Synthesis and electrochemical properties of layered LiNi 2 / 3 Sb 1 / 3 O 2
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چکیده
LiNi2/3Sb1/3O2 has been prepared by ion-exchange from NaNi2/3Sb1/3O2. Powder X-ray diffraction (XRD) and single crystal electron diffraction y transmission electron microscopy (TEM) of the material indicate that it is isostructural with -NaFeO2. Electrochemical test shows that the eversible capacity for Li intercalation and deintercalation drops rapidly with the number of times cycled. Both experimental evidences and first rinciples calculations point to the migration of nickel as the reason for the poor capacity retention. 2007 Published by Elsevier B.V.
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تاریخ انتشار 2007