Layered Metal Oxide Cathode Material for Lithium Ion Batteries
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Jun 15, 2015
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Jun 13, 2014
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Abstract
The invention provides a cathode material for L1-ion batteries. The material has the formula of 0.5Li2MnO3-0.5LiM-n0.5Ni0.35Co0.15O2. The material was synthesized using the “self-ignition combustion” method, which previously has not been used for the preparation of Li-rich layered metal oxides. The cathode material exhibits capacities of 290, 250, and 200 mAh/g at discharge rates of C/20, C/4 and C rates, respectively. Moreover, the new material exhibits high rate cycling ability with little or no capacity fade for over 100 cycles demonstrated at a series of rates from C/20 to 2C rates for electrodes loadings of 7-8 mg/cm2.
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