期刊
INORGANIC CHEMISTRY FRONTIERS
卷 5, 期 3, 页码 635-642出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7qi00696a
关键词
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资金
- National Natural Science Foundation of China [21474043, 51473065]
- Graduate Innovation Fund of Jilin University [2015011]
Currently, the search for the fabrication of inexpensive and efficient binder-free electrodes for high performance supercapacitor applications is still a great challenge. In this work, different nanostructures of Ni-Mn oxide (Ni-Mn-O) are directly grown on the surface of flexible electrospun carbon nanofibers (ECNFs) and further used as binder-free electrodes for supercapacitors. Among three typical nanostructures, Ni-Mn-O nanosheets on ECNFs show superior electrochemical properties with a good specific capacitance (368.6 F g-1) and excellent rate properties (88.6% retention at 20 times initial current density) in a three-electrode system. Furthermore, an aqueous symmetry cell and a solid-state symmetry supercapacitor are assembled using two pieces of flexible ECNFs@ Ni-Mn-O nanosheets. The maximum energy density and power density based on the solid-state supercapacitor are up to 20.4 W h kg-1 and 5.2 kW kg-1, respectively, indicating that the flexible ECNFs@ Ni-Mn-O nanosheets present a fairly promising future for practical applications in the field of energy storage.
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