Preparation and electrochemical properties of Li-rich spinel-type lithium manganate coated LiMn2O4 |
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| Authors: | Yumei Li Yongliang Li Yi He |
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| Affiliation: | a College of Chemistry, Beijing Normal University, Beijing 100875, China
b Analytical and Testing Center, Beijing Normal University, Beijing 100875, China |
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| Abstract: | Li-rich spinel-type lithium manganate (SC) coated LiMn2O4 composites were prepared and characterized by XRD, SEM, FT-IR, ICP, etc. Their charge/discharge behaviors were studied between 3.0 and 4.3 V at 40 mA g−1 under room temperature, and the results showed that SC coated on surface of LiMn2O4 could improve cycling stability of composite electrodes. The composite (S1) containing 4.8 wt% of SC exhibited noticeably improved cycling stability, whereas the initial specific capacity was very close to that of LiMn2O4. |
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| Keywords: | A. Composites B. Sol-gel chemistry C. Electrochemical measurements C. X-ray diffraction D. Electrochemical properties |
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