LiFePO4/carbon nanowires with 3D nano-network structure as potential high performance cathode for lithium ion batteries
LiFePO4/carbon nanowires with 3D nano-network structure as potential high performance cathode for lithium ion batteries
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具有3D纳米网络结构的LiFePO4/碳纳米线作为潜在的高性能锂离子电池正极
DOI：
10.1016/j.electacta.2016.01.019
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发表时间：
2016-02-10
影响因子：
6.6
通讯作者：
Chen, Han
中科院分区：
文献类型：
--
作者：
Bai, Ningbo;Xiang, Kaixiong;Chen, Han
LifePo4/碳纳米线具有三维（3D）纳米网络结构，通过链淀粉诱导的蒸发自组装方法成功合成了。通过X射线衍射仪，扫描电子显微镜和透射电子显微镜研究形态和结构。同轴一维LifePo4/c纳米线的直径为50 nm，长度在400 nm和1 mu m之间，通过从淀粉酶的短分支链中的无定形碳密切连接到3D纳米网络结构中。他们在0.1 C和50 C时分别提供167和138 mA H G（-1）的高容量。在以50c速率以50°C的速度循环后，复合材料的容量保留仍然可以维持92.8％（128 mA H G（-1））。独特的3D纳米网络结构可以有效地增加活性材料和电解质之间的接触，并提高差的电子和离子电导率。 （c）2016 Elsevier Ltd.保留所有权利。
LiFePO4/carbon nanowires with three-dimensional (3D) nano-network structure were successfully synthesized via evaporative self-assembly method induced by amylose. The morphologies and structures are investigated by X-ray diffractometer, scanning electron microscope and transmission electron microscope. The co-axis one-dimensional LiFePO4/C nanowires, which are 50 nm in diameter and between 400 nm and 1 mu m in length, are tightly connected into 3D nano-network structure by the amorphous carbon from the short branched chains of amylase. They deliver high capacities of 167 and 138 mA h g(-1) at 0.1 C and 50 C respectively. After 100 cycles at 50C rate, the capacity retention of the composite can still maintain 92.8% (128 mA h g(-1)). The unique 3D nano-network structure can effectively increase the contact between active materials and electrolyte, and improve the poor electronic and ionic conductivity. (C) 2016 Elsevier Ltd. All rights reserved.