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Nano energy v.31, 2017년, pp.311 - 321   SCIE
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A universal strategy for metal oxide anchored and binder-free carbon matrix electrode: A supercapacitor case with superior rate performance and high mass loading

Zhang, Xuan (Department of Materials Engineering, KU Leuven, Leuven 3001, Belgium ); Luo, Jiangshui (Department of Materials Engineering, KU Leuven, Leuven 3001, Belgium ); Tang, Pengyi (‎Catalan Institute of Nanoscience and Nanotechnology (ICN2), The Barcelona Institute of Science and Technology and CSIC, Barcelona, Spain ); Ye, Xiaoliang (State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China ); Peng, Xinxing (State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China ); Tang, Haolin (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China ); Sun, Shi-Gang (State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materia ); Fransaer, Jan ( );
  • 초록  

    Abstract Despite the significant advances in preparing carbon-metal oxide composite electrodes, strategies for seamless interconnecting of these two materials without using binders are still scarce. Herein we design a novel method for in situ synthesis of porous 2D-layered carbon–metal oxide composite electrode. Firstly, 2D-layered Ni-Co mixed metal-organic frameworks (MOFs) are deposited directly on nickel foam by anodic electrodeposition. Subsequent pyrolysis and activation procedure lead to the formation of carbon–metal oxides composite electrodes. Even with an ultrahigh mass loading of 13.4mgcm −2 , the as-prepared electrodes exhibit a superior rate performance of 93% (from 1 to 20mAcm −2 ), high capacitance (2098mFcm −2 at a current density of 1mAcm −2 ), low resistance and excellent cycling stability, making them promising candidates for practical supercapacitor application. As a proof of concept, several MOF derived electrodes with different metal sources have also been prepared successfully via the same route, demonstrating the versatility of the proposed method for the preparation of binder-free carbon–metal oxide composite electrodes for electrochemical devices. Highlights Facile synthesis of 2D-Co-Ni mixed MOFs by electrodeposition. In-situ growth of metal oxide anchored carbon matrix on Ni foam. The achieved 2D-CMO electrode exhibits excellent rate performance with high mass loading. This approach is expected to be a universal strategy for in-situ growth of metal oxide anchored carbon matrix electrodes. Graphical abstract A novel 2D carbon−metal oxide composite electrode was prepared by four steps and demonstrated as promising binder-free electrode materials for supercapacitors with ultrahigh rate performance of 93% (from 1 to 20mAcm −2 ) and high mass loading (13.4mgcm −2 ). Moreover, this new general strategy is also expected to facilitate the synthesis of carbon–metal oxide composite electrodes for other electrochemical devices. [DISPLAY OMISSION]


  • 주제어

    Metal-organic frameworks .   Anodic electrodeposition .   Carbon-metal oxide composite materials .   Supercapacitors.  

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