A hierarchical Cu7.2S4@C@MoS2 composite with superior lithium-ion storage properties

被引:0
作者
Zhuang, Ziqiushui [1 ]
Xu, Huizhong [1 ]
Wu, Qianqian [1 ]
Liu, Xiaochen [1 ]
Ma, Enwang [1 ]
Zhu, Yufeng [1 ]
Zhao, Minghui [1 ]
Li, Wei [1 ]
机构
[1] Qingdao Univ Sci & Technol, Engn Res Ctr High Performance Polymer & Molding Te, Minist Educ, Qingdao 266042, Peoples R China
关键词
MoS2; Hierarchical composite; Lithium anode material; DEPOSITION-BASED SYNTHESIS; BINDER-FREE; ELECTRODE MATERIAL; ANODE MATERIALS; MOS2; CARBON; HETEROSTRUCTURES; NANOSHEETS; SPHERES; OXIDE;
D O I
10.1007/s11581-025-06201-8
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Molybdenum disulfide (MoS2), a metal sulfide with a high theoretical capacity, is considered a potential alternative to traditional graphite anodes in lithium-ion batteries (LIBs). However, MoS2 is prone to agglomeration during the lithiation/delithiation process and has poor electrical conductivity, which limits its application. Herein, a composite of two-dimensional (2D) MoS2 nanosheets and three-dimensional (3D) Cu7.2S4 cubes was prepared by a self-sacrificing template method to alleviate the inherent defects of MoS2. The 3D Cu7.2S4 alleviates the agglomeration problem of MoS2 nanosheets, while the surface-covered carbon layer increases the structural stability of the material, collectively resulting in excellent electrochemical properties. As expected, when used as anode active material, the Cu7.2S4@C@MoS2 composite demonstrates excellent specific capacity of 1813.3 mA h g(-1) at 0.1 A g(-1) and shows superior cycling stability (702.4 mA h g(-1) after 1000 cycles at 1 A g(-1)), which is attributed to the unique structure combining 2D and 3D as well as the synergistic effect between different components. The study offers a novel approach for the expanded use of MoS2.
引用
收藏
页码:5237 / 5247
页数:11
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