Self-Assembled Fe2O3/Graphene Aerogel with High Lithium Storage Performance

被引:285
作者
Xiao, Li [1 ]
Wu, Dongqing [2 ]
Han, Sheng [2 ]
Huang, Yanshan [2 ]
Li, Shuang [2 ]
He, Mingzhong [1 ]
Zhang, Fan [2 ]
Feng, Xinliang [2 ,3 ]
机构
[1] China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China
[3] Max Planck Inst Polymer Res, D-55128 Mainz, Germany
关键词
Fe2O3/GAs; 3D interconnected graphene; self-assembly; anode material; lithium-ion batteries; CHEMICALLY-MODIFIED GRAPHENE; ION BATTERIES; REDUCED GRAPHENE; ENERGY-STORAGE; ANODE MATERIAL; ELECTROCHEMICAL PERFORMANCE; OXIDE; ALPHA-FE2O3; CAPACITY; METAL;
D O I
10.1021/am400387t
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this study, graphene aerogel (GA)-supported Fe2O3 particles with three-dimensional (3D) architecture was prepared by a one-pot hydrothermal process. Fe2O3 particles were dispersed uniformly on the graphene sheets, and the resulting composites self-assembled into a 3D network via hydrothermal treatment. This strategy provides a facile and environmentally friendly method for the large-scale synthesis of Fe2O3/GAs without any additional reductant. As the anode material for lithium ion batteries, the Fe2O3/GAs in this study manifested an excellent reversible capacity of 995 mA h g(-1) after 50 cycles at a charge-discharge rate of 100 mA g(-1) and even delivered reversible capacity as high as 372 mA h g(-1) at a high rate of 5000 mA g(-1). The outstanding electrochemical performance of Fe2O3/GAs can be attributed to the synergistic interaction between uniformly dispersed Fe2O3 particles and graphene aerogel, in which a robust 3D framework of graphene provided highly conductive networks with a large surface area and short diffusion path length for the transport of lithium ions.
引用
收藏
页码:3764 / 3769
页数:6
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