Self-assembly of nano/micro-structured Fe3O4 microspheres among 3D rGO/CNTs hierarchical networks with superior lithium storage performances

被引:28
作者
Liu, Jinlong [1 ,2 ]
Feng, Haibo [1 ]
Wang, Xipeng [1 ]
Qian, Dong [1 ,2 ]
Jiang, Jianbo [1 ]
Li, Junhua [1 ]
Peng, Sanjun [1 ]
Deng, Miao [1 ]
Liu, Youcai [1 ]
机构
[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
[2] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China
基金
中国国家自然科学基金;
关键词
Fe3O4; reduced graphene oxide; carbon nanotube; nanocomposite; lithium-ion battery; LI-ION BATTERIES; ELECTROCHEMICAL ENERGY-STORAGE; ANODE MATERIAL; REVERSIBLE CAPACITY; CYCLIC PERFORMANCE; CARBON MATRIX; METAL-OXIDES; GRAPHENE; COMPOSITE; NANOPARTICLES;
D O I
10.1088/0957-4484/25/22/225401
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Nano/micro-structured Fe3O4 microspheres among three-dimensional (3D) reduced graphene oxide (rGO)/carbon nanotubes (CNTs) hierarchical networks (the ternary composite is denoted as rGCFs) have been synthesized using a facile, self-assembled and one-pot hydrothermal approach. The rGCFs composite exhibits superior lithium storage performances: initial discharge and charge capacities of 1452 and 1036 mAh g(-1), respectively, remarkable rate capability at current densities from 100 mA g(-1) to 10 A g(-1) and outstanding cycling performance up to 200 cycles. The highly enhanced electrochemical performances of rGCFs depend heavily on the robust 3D rGO/CNTs hierarchical networks, the stable nano/microstructures of active Fe3O4 microspheres and the positive synergistic effects of building components. The systematic structure characterizations and electrochemical investigations provide insightful understanding towards the relationship between structure/morphology and lithium storage performances, which may pave the way for the rational design of composite materials with desirable goals.
引用
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页数:8
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