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A general route to the synthesis of layer-by-layer structured metal organic framework/graphene oxide hybrid films: toward high-performance supercapacitor electrodes

Abstract

The synthesis of well-designed metal organic framework-based hybrid structures still remains a very big challenge in recent scientific research. We here develop a facile route for preparing metal organic framework/graphene oxide hybrid films with a highly ordered layer-by-layer architecture, water-insoluble inorganic crystals as the excellent metal ion sources also serve as the spacer materials to form interconnected porous networks and ensure the continuous proceeding of coordination reactions. The obtained hybrids are subsequently used as the precursors for the preparation of active materials of supercapacitor electrodes. Their derived layered double hydroxide-based and nanoporous carbon-based hybrids could maintain the similar layer-by-layer structure, and exhibit exceptional energy storage performances including high capacity and rate capability as well as good cycling stability, resulting from the unique structure that offers higher surface area and faster ion and charge transfer efficiency. In addition, the assembled asymmetric supercapacitor device delivers an energy density of 50.5 Wh kg-1 at a power density of 853.3 W kg-1, and even at a power density of 25.1 KW kg-1, it still achieves a high energy density of 34.8 Wh kg-1. Our prepared layer-by-layer metal organic framework-derived materials demonstrate promise for high-performance energy storage application, the as-prepared functional materials also show great potentials in other fields.

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Publication details

The article was received on 11 May 2017, accepted on 12 Jul 2017 and first published on 13 Jul 2017


Article type: Paper
DOI: 10.1039/C7TA04074A
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    A general route to the synthesis of layer-by-layer structured metal organic framework/graphene oxide hybrid films: toward high-performance supercapacitor electrodes

    D. Yu, L. Ge, X. Wei, B. Wu, J. Ran, H. Wang and T. Xu, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA04074A

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