| 摘要 |
The invention provides a cathode material for Ll-ion batteries. The material has the formula of 0.5Li2Mn03-0.5LiMn0.5Ni0.35Co0.1502. 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. |
