Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 277, Issue -, Pages 100-106Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2019.05.040
Keywords
Metal-organic framework; Supercapacitor; Nitrogen-doped porous carbon
Funding
- National Key R&D Program of China [2018YFB0605700]
- National Natural Science Foundation of China [51778570, 51879230]
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In this work, nitrogen doped porous carbon nanorods for supercapacitor electrodes have been successfully fabricated through solvothermal method and direct pyrolysis of metal-organic frameworks under N-2 atmosphere. In the procedure, in-situ synthesis of two Zn-based metal-organic frameworks (Zn-BTC and ZIF-8) is the key point to obtain high N doping content and stable porous structure. The prepared porous nanorods were characterized by power X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and N-2 adsorption-desorption isotherm. The results show that the nitrogen doped porous carbon nanorods, as the supercapacitor electrodes, exhibit good performance with a specific capacitance of 162 F g(-1) at 1.25 A g(-1), and the excellent cycle performance (capacity retention even increases to 107% after 10000 cycles at 20 A g(-1)) due to the unique pore structure.
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