Yu Qiyao, Wang Bo, Wang Jian, Hu Sisi, Hu Jun, Li Ying
Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, China.
School of Materials Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, China.
Front Chem. 2020 Jul 29;8:590. doi: 10.3389/fchem.2020.00590. eCollection 2020.
SnSe nanosheet is a common anode for lithium-ion batteries (LIBs), but its severe agglomeration hinders its practical application. Herein, a three-dimensional (3D) SnSe nanoflower (F-SnSe) composed of non-stacking vertical upward hexagonal nanosheets was prepared through a colloidal method as an anode material for LIBs. Benefiting from the advantages of fast reaction-diffusion kinetics and buffering unavoidable volume variation during cycling, the F-SnSe electrode displays remarkable specific capacity of 795 mAh g after 100 cycles at 100 mA g and superior rate performance (282 mAh g at 2,000 mA g). This work provides an effective way to get non-stacking nanosheets in energy storage field.
硒化锡纳米片是锂离子电池（LIBs）常用的负极材料，但其严重的团聚现象阻碍了其实际应用。在此，通过胶体法制备了一种由非堆叠垂直向上的六边形纳米片组成的三维（3D）硒化锡纳米花（F-SnSe）作为LIBs的负极材料。得益于快速反应扩散动力学以及在循环过程中缓冲不可避免的体积变化的优势，F-SnSe电极在100 mA g的电流密度下循环100次后表现出795 mAh g的显著比容量以及优异的倍率性能（在电流密度为2000 mA g时为282 mAh g）。这项工作为在储能领域获得非堆叠纳米片提供了一种有效方法。
