Synthesis of Fe2P coated LiFePO4 nanorods with enhanced Li-storage performance
Synthesis of Fe2P coated LiFePO4 nanorods with enhanced Li-storage performance
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DOI：
10.1016/j.jallcom.2014.12.046
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发表时间：
2015-04
影响因子：
6.2
通讯作者：
Lingyan Zhang;Yufeng Tang;Zhanqiang Liu;Haining Huang;Yong-Zheng Fang;Fuqiang Huang
中科院分区：
文献类型：
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作者：
Lingyan Zhang;Yufeng Tang;Zhanqiang Liu;Haining Huang;Yong-Zheng Fang;Fuqiang Huang
在这项研究中，我们提出了一种简单的氢等离子体技术来制备Fe2P包覆的LiFePO4（LiFePO4 - Fe2P）纳米棒。与传统的高温（约800℃）固体合成不同，在500℃氢等离子体条件下，Fe2P可以在lifepo4表面生成，避免了lifepo4颗粒的聚集。得益于高导电性的Fe2P相和纳米级结构，LiFePO4-Fe2P纳米棒表现出更高的电子导电性和高离子扩散速率。应用于锂离子电池时，可获得比纯LiFePO4更高的容量和倍率性能。
In this investigation, we propose a facile hydrogen plasma technique to fabricate Fe2P coated LiFePO4(LiFePO4–Fe2P) nanorods. Different from conventional solid synthesis at high temperature (ca. 800 °C), Fe2P can generate on the LiFePO4surface at 500 °C under hydrogen plasma condition, avoiding the aggregation of LiFePO4particles. Benefit from the high conductive Fe2P phase and the nano-sized structure, the LiFePO4–Fe2P nanorods show an enhanced electronic conductivity and high ion diffusion rate. When used in lithium ion battery, an improved capacity and rate performance, much higher than that of pure LiFePO4, can be obtained.