Spindle -shaped core -shell Fe 3 O 4 @N-doped carbon composites scattered in graphene as excellent anode materials for lithium/sodium ion battery

被引:34
作者
Zhong, Wen [1 ]
Chen, Qianwu [1 ]
Liu, Zhen [1 ]
Yang, Fei [1 ]
Liu, Weiliang [1 ]
Sun, Kailian [3 ]
Kong, Fangong [1 ]
Ren, Manman [1 ,2 ]
机构
[1] Qilu Univ Technol, ShandongAcad Sci, State Key Lab Biobased Mat & Green Papermaking, Sch Mat Sci & Engn, Jinan 250353, Peoples R China
[2] Nankai Univ, Coll Chem, Minist Educ, Key Lab Adv Energy Mat Chem, Tianjin 300071, Peoples R China
[3] Chuzhou Univ, Coll Mat Sci & Chem Engn, Chuzhou 239000, Peoples R China
关键词
HIGH-PERFORMANCE ANODES; FE3O4; NANOPARTICLES; GRAPHITIC CARBON; METAL-OXIDES; NANOFIBERS; CHALLENGES; NANORODS; STORAGE; MATRIX;
D O I
10.1016/j.jallcom.2020.154879
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
Fe3O4 shows great potential in the energy storage field; however, the low conductivity, particles aggregation and large volume change during the electrochemical process seriously limit its practical application. Here, spindle-shaped core-shell Fe3O4@N-doped carbon scattered in graphene (Fe3O4@NCm/rGO) has been successfully fabricated. SEM and TEM results indicate that the N-doped carbon shell with a thickness of 10 nm was homogenously coating on the spindle-shaped Fe3O4 surface, and at the same time the Fe3O4@NCm particles evenly dispersed on the graphene sheets. Profiting from the N-doped carbon shell and graphene, the Fe3O4@NCm/rGO electrode delivers excellent electrochemical performances both in Li and Na ion half-cells (720 mAh g−1 at 1000 mA g−1 after 500 cycles and 237 mAh g−1 at 1000 mA g−1 after 2500 cycles for Li and Na ion half-cells, respectively). And most importantly, the Fe3O4@NCm/rGO electrode also presents superior lithium and sodium storage performances in Li and Na ion full-cells with 526 mAh g−1 for Li-ion full cell and 192 mAh g−1 for Na-ion full cell. These results demonstrate that the Fe3O4@NCm/rGO composites have great promising applications as anodes in both commercial Li/Na-ion batteries. © 2020 Elsevier B.V.
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页数:8
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