MoS2/SnS heterostructure composite for high-performance lithium-ion battery anodes

被引:1
作者
Guo, Yiwen [1 ]
Liu, Kun [2 ]
Liu, Wenlong [1 ]
Zhang, Ning [1 ]
Sun, Xiaodong [1 ]
Li, Song [1 ]
Wen, Zhongsheng [1 ]
Sun, Juncai [1 ]
机构
[1] Dalian Maritime Univ, Inst Mat & Technol, Dalian 116026, Peoples R China
[2] Sinopec Dalian Res Inst Petr & Petrochem, Dalian 116045, Peoples R China
关键词
Metal sulfides; Heterostructure; Hydrothermal; Anode; Lithium-ion batteries; GRAPHENE OXIDE NANOCOMPOSITES; STORAGE; CARBON; NANOSHEETS; CAPACITY;
D O I
10.1016/j.solidstatesciences.2024.107660
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Layered metal sulfides are potential anode materials for lithium-ion batteries (LIBs) because their unique structure makes them suitable for Li+ de-intercalation. As a typical 2D layered material, MoS2 is a potential anode material for LIBs due to the weak van der Waals forces between the layers, which facilitates the deintercalation of Li+ and supports multiple Li+. However, when MoS2 is used as anodes for LIBs material, rapid capacity decay hinders the application. Coupling two different materials to form a heterogeneous structure is an effective way to solve the above problems. In this work, one-pot hydrothermal method is proposed to construct MoS2/SnS heterostructure composites. The electrochemical properties are significantly enhanced, which could be attributed to the presence of heterogeneous structures, leading to increase the electrode charge transfer rate and interfacial reaction kinetics. The results show that the discharge capacity of the MoS2/SnS-1.5 electrode is about 1492.1 mAh/g at 500 mA/g. Furthermore, assembled MoS2@SnS-1.5||LiCoO2 full cell displays a high discharge capacity of 226.1 mAh/g after 50 cycles at 500 mA/g. This facile method provides the application value of layered metal sulfides as LIBs anode materials.
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页数:7
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