Enhanced rate performance of molybdenum-doped spinel LiNi 0.5 Mn 1.5 O 4 cathode materials for lithium ion battery

2014-08-13 13:33  下载量:5

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The Mo-doped LiNi0.5 Mn1.5O4 cathodes are successfully synthesized by citric acid-assisted sol–gel method. The result demonstrates that the Mo-doped LiMn1.4Ni0.55 Mo0.05O4 cathodes present the improved electrochemical performance over pristine LiNi 0.5 Mn1.5O4. At the 2 C rate after 80 cycles, the discharge capacities are 68.5 mAh g-1 for the pristine LiNi0.5 Mn1.5O4material (53.9% of the capacity at 0.1 C), 107.4 mAh g-1 for the LiMn1.425Ni0.5 Mo0.05O4material (82.1% at 0.1 C), and 122.7 mAh g-1 for the LiMn1.4Ni0.55 Mo0.05O4 material (90.5% at 0.1 C).

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