二硫化钼
法拉第效率
纳米棒
材料科学
电极
化学工程
纳米管
纳米结构
异质结
复合数
电化学
纳米技术
电子转移
电池(电)
化学
复合材料
光电子学
有机化学
物理化学
碳纳米管
工程类
功率(物理)
物理
量子力学
作者
Jing Xu,Lina Wang,Ke‐Jing Huang,Peilong Chen,Geng li,Zhong Dong,Linxia Fang
标识
DOI:10.1016/j.ces.2022.117702
摘要
Coupling the composite electrodes formed by two different semiconductors is an effective way to enhance the charge transfer rate and interfacial reaction kinetics of electrodes. In this work, two-dimensional stannous sulfide nanosheets (SnS) coated molybdenum disulfide (MoS2) nanotube constructed hierarchical nanostructure is obtained by using conventional template method, and the battery properties are studied in detail. The specific discharge capacity of the composite material reaches up to 819 mAh g−1, and the initial coulombic efficiency (CE) is 81.8% at first cycle. The discharge capacity is maintained at 430.7 mAh g−1 with decay of only 7.2% after 300 cycles at 1000 mA g−1. These impressive discharge properties may be related to the designed layered structure that accelerates the separation and transfer rate of ions and electrons at the electrode interface. The unique hierarchical structure can also provide abundant reaction binding sites, buffer the electrode volume change, and thus enhance the sodium storage performance.
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