High Lithium Storage Performance of FeS Nanodots in Porous Graphitic Carbon Nanowires
High Lithium Storage Performance of FeS Nanodots in Porous Graphitic Carbon Nanowires
复制标题
多孔石墨碳纳米线中 FeS 纳米点的高储锂性能
DOI：
10.1002/adfm.201404468
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发表时间：
2015
影响因子：
19
通讯作者：
Yu Yan
中科院分区：
文献类型：
--
作者：
Zhu Changbao;Wen Yuren;van Aken Peter A.;Maier Joachim;Yu Yan
为了满足电动汽车和电网规模储能的要求，人们非常关注提高锂离子电池的能量密度。虽然对于阳极有各种选择，但对于阴极则完全不是这种情况。在这种情况下，廉价且环境友好的硫化铁由于基于转化反应的显著高容量而被研究作为阴极材料。在这里，报道了通过静电纺丝技术和生物分子辅助水热方法的组合来制备容纳在多孔石墨碳纳米线中的FeS纳米点。这些材料也表现出优异的电化学性能作为阴极材料，具有能量密度甚至高于目前的LiCoO2嵌入阴极。此外，转化反应的关键问题，如可逆性程度低，大极化，得到了极大的缓解。
Much attention has been paid to increase the energy density of Li‐ion batteries, in order to fulfill the requirements of electric vehicles and grid‐scale energy storage. While for anodes various options are available, this is not at all the case for cathodes. In this context, the inexpensive and environmentally benign iron sulfides have been investigated as cathode materials due to the remarkably high capacity based on the conversion reaction. Here, the preparation of FeS nanodots accommodated in porous graphitic carbon nanowires is reported via a combination of electrospinning technique and biomolecular‐assisted hydrothermal method. These materials exhibit excellent electrochemical performances also as cathode materials, with energy densities even higher than the current LiCoO2intercalation cathode. Moreover, key problems of conversion reaction, such as the low degree of reversibility, large polarization are far‐reachingly mitigated.