材料科学
阴极
锂(药物)
阳极
储能
纳米线
纳米技术
纳米点
电化学
静电纺丝
多孔性
背景(考古学)
插层(化学)
化学工程
电极
无机化学
复合材料
内分泌学
工程类
物理化学
古生物学
功率(物理)
物理
化学
生物
聚合物
医学
量子力学
作者
Changbao Zhu,Yuren Wen,Peter A. van Aken,Joachim Maier,Yan Yu
标识
DOI:10.1002/adfm.201404468
摘要
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 LiCoO 2 intercalation cathode. Moreover, key problems of conversion reaction, such as the low degree of reversibility, large polarization are far‐reachingly mitigated.
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