标题：Facile formation of graphene-encapsulated α-Fe2O3nanorice as enhanced anode materials for lithium storage
作者：Wei, Denghu ;Liang, Jianwen ;Zhu, Yongchun ;Zhang, Jingjing ;Li, Xiaona ;Zhang, Kailong ;Yuan, Zhengqiu ;Qian, Yitai
作者机构：[Wei, Denghu ;Liang, Jianwen ;Zhu, Yongchun ;Zhang, Jingjing ;Li, Xiaona ;Zhang, Kailong ;Yuan, Zhengqiu ;Qian, Yitai ] Hefei National Laboratory for 更多
摘要：Graphene-encapsulated α-Fe2O3nanorice (GE-FN) has been facilely fabricated via a solution-mixing method at room temperature. The Fe2O3nanorice with an average of ∼350 nm was uniformly wrapped in the graphene sheets. As an anode material for rechargeable lithium batteries, this GE-FN composite exhibits enhanced cyclability and rate performance compared with free α-Fe2O3nanorice. Even after 500 cycles, it still delivers a capacity over 1000 mA h g-1. The morphology of the active materials after the cycling process was also investigated by transmission electron microscopy (TEM), and found that the bare α-Fe2O3nanorice agglomerated severely, while the α-Fe2O3nanorice encapsulated by the graphene sheets could keep their pristine morphology well and almost isolate from each other after 500 cycles. © 2013 Elsevier Ltd. All rights reserved.