Journal
RSC ADVANCES
Volume 7, Issue 47, Pages 29611-29617Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra04374k
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Funding
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- Natural Science Research Key Project of Jiangsu Colleges and Universities [16KJA430005]
- Natural Science Foundation of the State Key Laboratory of Coordination Chemistry
- National Natural Science Foundation of China [20971060]
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For the development of supercapacitors with higher energy densities, metal-organic frameworks (MOFs), as electrode materials for supercapacitors, have attracted much attention. Herein, layered manganesebased MOF ([Mn(tfbdc)(4,4'-bpy)(H2O)(2)], Mn-LMOF; H(2)tfbdc = 2,3,5,6-tetrafluoroterephthalic acid, 44'-bpy = 4,4'-bipyridine) was synthesized by a simple solution reaction and evaluated as an electrode material for supercapacitors for the first time. The Mn-LMOF electrode showed a high specific capacitance, a good cycling stability and a improved rate capability. Its maximum specific capacitances were 1098 F g(-1) for 1 M KOH and 1178 F g(-1) for 1 M LiOH solutions at a current density of 1 A g(-1). The specific capacitance retention was maintained at 92.6% after 2000 cycles in 1 M KOH, slightly lower than that in 1 M LiOH. The excellent supercapacitive performance may be ascribed to the nature of MnLMOF, containing a layered structure and nano-sized particles.
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