Synthesis and electrochemical properties of NaAlO2 coated LiNi0.8Co0.1Mn0.1O2 cathode material
Using lithium acetate,nickel acetate,cobalt acetate,and manganese acetate as raw materials and cit-ric acid as a complexing agent,LiNi0.8Co0.1Mn0.1O2 was synthesized via the sol-gel method.After calcination with NaAlO2,LiNi0.8Co0.1Mn0.1O2 coated with NaAlO2 was successfully prepared.XRD,SEM,and EDS were employed to characterize the structure and morphology of the samples.The results revealed that an increase in coating amount led to an expansion in lattice spacing while transforming the particle surface from smooth to rough texture.Electrochemical testing demonstrated that 2 wt％NaAlO2@LiNi0.8Co0.1Mn0.1O2 exhibited an ini-tial specific discharge capacity of 180.36 mAh/g at 1 C rate with a capacity retention rate of 79.2％after 200 cy-cles.Furthermore,it displayed improved electrochemical reversibility and reduced charge transfer resistance.
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