A novel preparation of core-shell electrode materials via evaporation-induced self-assembly of nanoparticles for advanced Li-ion batteries.
A novel preparation of core-shell electrode materials via evaporation-induced self-assembly of nanoparticles for advanced Li-ion batteries.
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DOI：
10.1039/c5cc05577f
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发表时间：
2015-09
影响因子：
4.9
通讯作者：
Zhiqiang Xie;Sara Ellis;Wangwang Xu;D. Dye;Jianqing Zhao;Ying Wang
中科院分区：
文献类型：
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作者：
Zhiqiang Xie;Sara Ellis;Wangwang Xu;D. Dye;Jianqing Zhao;Ying Wang
我们首次报道了一种简单而新颖的富锂层状尖晶石核壳结构(L@S核壳)的制备方法，该方法是在不使用任何表面活性剂的情况下，通过蒸发诱导自组装将镍掺杂的Li4Mn5O12纳米粒子(Li4Mn4.5Ni0.5O12)沉积在层状Li[Li0.2Mn0.54Ni0.13Co0.13]O2表面。合成的L@S核壳作为锂离子电池的正极材料，比容量、循环性能和倍率性能都比原始的LMNCO有了显著的提高。
We report, for the first time, a simple and novel synthesis of a Li-rich layered-spinel core-shell heterostructure (L@S core-shell) via evaporation-induced self-assembly (EISA) of Ni-doped Li4Mn5O12 nanoparticles (Li4Mn4.5Ni0.5O12) onto the surface of layered Li[Li0.2Mn0.54Ni0.13Co0.13]O2 (LMNCO) without using any surfactant during the coating process. The resultant L@S core-shell as a cathode in lithium ion batteries demonstrates significantly improved specific capacity, cycling performance and rate capability compared to pristine LMNCO.