Journal
CHEMICAL ENGINEERING JOURNAL
Volume 313, Issue -, Pages 1623-1632Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2016.11.063
Keywords
Lithium-ion batteries; 3D graphene network; Metal-organic framework; Metal oxide; Fabrication
Categories
Funding
- National Natural Science Foundation of China [51272095, 51672114]
- Natural Science Foundation of Jiangsu Province of China [BK20151328, BK20161357]
- Qing Lan Project of Jiangsu Province of China
- project of the Priority Academic Program Development of Jiangsu Higher Education Institutions of China
- China Postdoctoral Science Foundation [2014M561578]
- Jiangsu Planned Projects for Postdoctoral Research Funds of China [1401109C]
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In this work, an effective and facile strategy to fabricate binder-free electrodes composing 3D graphene network (3DGN) and octahedral CuO has been proposed. In this design, Cu-based MOF crystals were first uniformly grown on the surface of 3DGN substrate through a solution immersion method and then a subsequent thermal treatment isolated the formation of well-dispersed nanostructured CuO octahedras wrapped 3DGN. The obtained 3DGN/CuO composites were utilized as binder-free anodes of lithium ion batteries for the first time, yielding a high reversible gravimetric capacity of 409 mAh g(-1) (a large areal capacity of 0.39 mAh cm(-2)) at 100 mA g(-1), excellent cyclability with 99% capacity retention after 50 cycles and superior rate capability of 219 mAh g(-1) at 1600 mA g(-1). The remarkable performance of the composite electrode can be reasonably attributed to the synergistic interaction between octahedral CuO nanoparticles with high capacity and the conductive 3D graphene network with a large surface area and an interconnected porous structure. (C) 2016 Elsevier B.V. All rights reserved.
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