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Sn4P3/SbSn Nanocomposites for Anode Application in Sodium‐Ion Batteries
ChemElectroChem ( IF 3.5 ) Pub Date : 2018-07-04 , DOI: 10.1002/celc.201800639
Danni Lan 1 , Quan Li 1
Affiliation  

A facile one‐pot solvothermal method has been developed to synthesize Sn4P3/SbSn nanocomposites with a side‐by‐side configuration in individual nanoparticles. We show that introducing SbSn to Sn4P3 in such a configuration can improve the cyclic stability of the phase‐pure Sn4P3 electrode without sacrificing its practical capacity, although the theoretical capacity of SbSn is lower than that of Sn4P3. The nanocomposite anode delivers a highest capacity of 614.7 mA h g−1 at a current density of 100 mA g−1 and shows superior capacity retention to the phase pure Sn4P3, SbSn, or physical mixture of Sn4P3&SbSn based anodes after long cycles. The intact interface between the Sn4P3 and SbSn in the nanocomposite and their synergetic effect play important roles in enhancing the electrochemical performance of the composite electrode.

中文翻译:

用于钠离子电池阳极的Sn4P3 / SbSn纳米复合材料

已经开发了一种简便的单锅溶剂热法,可以在单个纳米颗粒中合成并排配置的Sn 4 P 3 / SbSn纳米复合材料。我们表明,以这种配置将SbSn引入Sn 4 P 3可以改善纯相Sn 4 P 3电极的循环稳定性,而不会牺牲其实际容量,尽管SbSn的理论容量低于Sn 4 P 3的理论容量。。纳米复合阳极在100 mA g -1的电流密度下可提供614.7 mA h g -1的最高容量,并显示出优于纯Sn 4相的容量保持率P 3,SbSn或长循环后基于Sn 4 P 3和SbSn的阳极的物理混合物。纳米复合材料中Sn 4 P 3和SbSn之间的完整界面及其协同作用在增强复合电极的电化学性能方面起着重要作用。
更新日期:2018-07-04
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