Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 4, Issue 3, Pages 1531-1537Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.5b01474
Keywords
Kenaf stem; Porous carbon; Supercapacitor; Fe3O4; MIL-88A
Categories
Funding
- National Natural Science Foundation of China [21465014, 21465015]
- Natural Science Foundation of Jiangxi Province [20142BAB203101, 20143ACB21016]
- Ministry of Education by the Specialized Research Fund for the Doctoral Program of Higher Education [20133604110002]
- Ground Plan of Science and Technology Projects of Jiangxi Educational Committee [KJLD14023]
- Open Project Program of Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University [KLFS-KF-201410, KLFS-KF-201416]
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Supercapacitors are considered as potential innovation for energy storage owing to their long charge discharge life and high power density. Herein, a simple and industry-scalable approach was developed to prepare the hybrid of Fe3O4-doped porous carbon nanorods (Fe3O4-DCN) supported by three-dimensional (3D) kenaf stem-derived macroporous carbon (KSPC) for high-performance supercapacitor, which was prepared via pyrolyzing the iron fumarate metal organic frameworks (MIL-88A, MIL stands for Materials from Institut Lavoisier)/3D-KSPC. The resulted 3D-KSPC/Fe3O4-DCN nanocomposites were carefully characterized by various techniques including scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy, X-ray powder diffraction and N-2 adsorption/desorption isotherms. The 3D-KSPC/Fe3O4-DCN were employed as a promising electrode materials of supercapacitors by combining the advantage of Fe3O4-DCN (e.g., high specific capacitance, good rate capability and excellent cycling stability) with the superiority of 3D-KSPC (e.g., large specific surface area and hierarchical pores and high conductivity), exhibiting a high specific capacitance of 285.4 F g(-1) at the current density of 1 A g(-1). The capacitance was kept at 220.5 F g(-1) after 5000 cycles at 2 A g(-1), indicating outstanding cycle performance. This work might provide a new strategy to prepare nanostructures on 3D-KSPC for future applications.
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