Double-shelled hollow microspheres of LiMn2O4 for high-performance lithium ion batteries
作者： Yuan-Li Ding , Xin-Bing Zhao , Jian Xie , Gao-Shao Cao , Tie-Jun Zhu
DOI: 10.1039/C1JM10924C
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摘要: Double-shelled hollow microspheres of LiMn2O4 were prepared by a facile self-template method. The inner and outer shells the obtained are composed nanoparticles with diameters ranging between 200–400 nm. Galvanostatic charge/discharge cycling shows that this material delivers discharge capacity 127 mAh g−1 at C/10 rate retainability 80% after 800 cycles 5 C rate, revealing high reversible capacity, superior capability excellent stability under rates. improved performance is attributed to short Li+ ion diffusion lengths in nanobuilding blocks void core space accommodate volume expansion/contraction during ions insertion/extraction processes.
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