Journal
JOURNAL OF POWER SOURCES
Volume 413, Issue -, Pages 50-58Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2018.12.014
Keywords
Metal-organic framework; Electrospun nanofibers; Carbon materials; Supercapacitor
Funding
- National Natural Science Foundation of China [21474043, 51773075, 51473065]
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Metal-organic framework nanosheets draw continuous attention in energy storage areas. In this work, for the first time, a facile strategy is developed to grow metal-organic framework nanosheets on electrospun nanofibers as supercapacitor electrode materials, exhibiting a high capacitance of 702.8 F g(-1) at a current density of 0.5 A g(-1) and excellent cycling stabilities over 10000 cycles. Through a specific carbonization process, the metal-organic framework based hybrids are preserved to produce a porous metal doped carbon material with the improved rate performance and a great prospect for cathode materials. Furthermore, an asymmetric solid-state supercapacitor device is assembled using the metal-organic framework based hybrids and metal doped carbon materials as anode and cathode materials, respectively. The maximum energy density of 51.4 Wh kg(-1) with a power density of 1500.1 W kg(-1) is achieved, which is superior to many previous reports, revealing a promising prospect for the novel high-performance asymmetric supercapacitor.
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