Journal
SMALL
Volume 14, Issue 33, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201801815
Keywords
supercapacitors; vanadium metal-organic frameworks
Categories
Funding
- National Natural Science Foundation of China [NSFC-21671170, 21673203, 21201010]
- Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP)
- Program for New Century Excellent Talents of the University in China [NCET-13-0645]
- Six Talent Plan [2015-XCL-030]
- Qinglan Project
- Innovation Program for Graduate Students in Universities of Jiangsu Province [KYLX16-1385]
- Excellent Doctoral Dissertation of Yangzhou University
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Compared to traditional metal oxides, metal-organic frameworks exhibit excellent properties, such as a high surface area, significant thermal stability, low density, and excellent electrochemical performance. Here, a simple process is proposed for the fabrication of rod-like vanadium metal-organic frameworks (V-IV(O)(bdc), bdc = 1,4-benzenedicarboxylate, or MIL-47), and the effect of the structure on the electrochemical performance is investigated via a series of electrochemical measurements. The V-IV(O)(bdc) electrode exhibits a maximum specific capacitance of 572.1 F g(-1) at current densities of 0.5 A g(-1). More significantly, aqueous and solid-state asymmetric supercapacitors are successfully assembled. The solid-state device shows an excellent energy density of 6.72 mWh cm(-3) at a power density of 70.35 mW cm(-3). This superior performance confirms that V-IV(O)(bdc) electrodes are promising materials for applications in supercapacitors.
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