Poly-melamine sponge derived N-doped carbon/Fe3O4/graphene synthesized for lithium-ion anode

被引:3
作者
Duan, Xiaoyong [1 ,2 ]
Wang, Jie [2 ,3 ]
Zhao, Zheng [2 ,3 ]
Zhao, Huifang [2 ,3 ]
Cheng, Miao [2 ,3 ]
Wang, Congwei [2 ]
Lei, Yong [1 ]
Wang, Junying [2 ]
Wang, Junzhong [2 ]
机构
[1] Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China
[2] Chinese Acad Sci, Inst Coal Chem, CAS Key Lab Carbon Mat, Taiyuan 030001, Shanxi, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
Structural; Composite materials; Fe3O4; Graphene; Poly-melamine sponge; Lithium-ion batteries;
D O I
10.1016/j.matlet.2019.05.035
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Nitrogen-doped pyrolytic carbon coated Fe3O4 nanocrystals supported by large sheet-size graphene (N-pC/Fe3O4/G) were synthesized by a self-assembly process followed by heating to obtain a high-performance anode material. The 3D porous poly-melamine sponge (PMS) acted as a template for the assembly of graphene to form curved and hollow foam structure, and as a source of N-doped carbon coating of Fe3O4 nanocrystals. The N-pC/Fe3O4/G composite exhibits good reversible capacity of 825 mAh/g after 350 cycles at a high current density of 1 A/g, showing much better performance than either one of its two components. Its performance benefits from the long-range conductivity of the graphene foam and the short-range local conductivity of the N-doped carbon coating. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页码:57 / 60
页数:4
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