Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University , Beijing 100084, China.
Institute of Tsinghua University Hebei , Beijing 100084, China.
Nano Lett. 2017 Jun 14;17(6):3959-3964. doi: 10.1021/acs.nanolett.7b01674. Epub 2017 May 25.
A novel design of hollow structured SnO@Si nanospheres was presented, which not only demonstrates high volumetric capacity as anode of LIBs, but also prevents aggregation of Sn and confines solid electrolyte interphase thickening. An impressive volumetric specific capacity of 1030 mAh cm was maintained after 500 cycles. The electrochemical impedance spectroscopy and differential scanning calorimetry indicated that solid electrolyte interphase can be confined in pores of as-prepared hollow structured SnO@Si.
提出了一种新型的中空结构 SnO@Si 纳米球设计，它不仅展示了作为 LIB 阳极的高体积容量，而且还防止了 Sn 的聚集和限制了固体电解质相的增厚。在 500 次循环后，仍保持了 1030 mAh cm 的出色体积比容量。电化学阻抗谱和差示扫描量热法表明，固体电解质相可以被限制在制备的中空结构 SnO@Si 的孔中。
