Nanoparticle–Nanorod Core–Shell LiNi0.5Mn1.5O4 Spinel Cathodes with High Energy Density for Li-Ion Batteries

2014-01-06 15:32 下载量：3

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研究领域：锂离子电池电极材料交流阻抗频率范围：500kHz - 0.01Hz Nanoparticle–nanorod core–shell LiNi0.5Mn1.5O4 spinel cathodes for Li-ion batteries were prepared using a hollow MnO2 precursor. The core and shell parts consisted of nanoparticle 100 nm and nanorod assemblies, respectively. The core–shell cathode exhibited greatly improved discharge capacities compared to nanoparticles prepared by a sol–gel method. The core–shell spinel exhibited discharge capacities of 121 and 100 mAh/g at 0.1C and 7C rates, respectively, whereas a spinel cathode prepared by a sol–gel method exhibited 99 and 80 mAh/g at those respective rates. In addition, the core–shell spinels demonstrated an energy density value that was enhanced by 52% to 1.6 Wh/cm3 compared to an analogous sample prepared by a sol–gel method, which showed a value of 0.9 Wh/cm3.

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天津德尚科技有限公司

金牌会员 | 第16年

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