Well-Designed Spherical Morphology Li1.2Mn0.54Ni0.13Co0.13O2 as Superior Cathode Materials for Lithium-Ion Batteries

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Li-rich layered cathode materials with an average composition of Li1.2Mn0.54Ni0.13Co0.13O2 have been successfully synthesized via one-pot facile co-precipitation method. The spherical cathode material and the unconsolidated shape one are obtained by optimizing the experimental condition. The results of electrochemical performance test expose that the spherical cathode material exhibits more excellent cycle ability and rate performance than the unconsolidated one. The initial charge-discharge specific capacities of the spherical cathode are approximately 323.4 mAh g-1 and 266.4 mAh g-1, respectively, showing an initial coulombic efficiency of 82.4%. A high discharge capacity of 241.1 mAh g-1 is maintained with the capacity retention of 90.5% after 50 cycles at a constant current density of 50 mA g-1 (1 C=250 mAh g-1).

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853-857

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April 2016

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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