Article ID Journal Published Year Pages File Type
10639968 Materials Science and Engineering: B 2005 4 Pages PDF
Abstract
Surface modification effects of the spinel LiMn2O4 cathode by a LiCoO2 precursor solution have been studied in terms of electrochemical performance and impedance response. The LiCoO2-modified LiMn2O4 cathode shows superior capacity retention of 91% than does the as-received LiMn2O4 (74% of capacity retention) after the 1st storage at 55 °C. AC impedance spectra of the LiCoO2-modified sample, in case of the after storage, show significantly improved impedance behaviors when compared with that of the as-received sample. Hence, the LiCoO2-modified LiMn2O4 cathode helps in improving the electrochemical cycling stability, especially in periodic storage at elevated temperature.
Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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