Ultra-thin carbon nanosheets coated with SnO2-NbC nanoparticles as high-performance anode materials for lithium-ion batteries

被引:9
|
作者
Wu, Shanshan [1 ]
Feng, Yefeng [1 ]
Guo, Zhiling [1 ]
Ke, Jin [1 ]
Wu, Kaidan [1 ]
Deng, Xiaoqian [1 ]
Xiong, Deping [1 ]
He, Miao [1 ]
机构
[1] Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangzhou 510006, Guangdong, Peoples R China
关键词
SnO2; NbC; Carbon nanosheets; Anode materials; Lithium-ion batteries; LIBs; OXIDE COMPOSITE CATHODES; ELECTROCHEMICAL PERFORMANCE; ELECTRODE MATERIALS; SURFACE MODIFICATION; STAINLESS-STEEL; DOPED GRAPHENE; BEHAVIOR; STORAGE; NANOSTRUCTURES; INTERCALATION;
D O I
10.1016/j.ceramint.2021.07.201
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
A SnO2-NbC-C ternary composite was constructed using hydrothermal and ball milling methods. For this special design, the SnO2-NbC nanoparticles were uniformly coated with ultra-thin carbon nanosheets. It should be noted that the NbC nanoparticles can accommodate the volume variation of SnO2 particles and prevent Sn agglomeration, resulting in good electrical contact between particles and low charge transfer resistance. After 100 cycles of 0.2 Ag-1, the SnO2-NbC-C nanocomposite exhibited a high capacity of 956.0 mAhg(-1), and a rate capacity of 955.2 mAhg(-1), and after 500 cycles of 5.0 Ag-1, it achieved a capacity of 704.1 mAhg(-1). In addition, the SnO2-NbC-C composite remained stable after 200 and 700 cycles without agglomeration.
引用
收藏
页码:31062 / 31072
页数:11
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