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- W2604242135 abstract "Abstract A new type of hierarchically mesoporous cobalt ferrite oxide nanosheets, CoFe2O4 nanosheets, has been successfully fabricated via a simple hydrothermal method on the Ni foam followed by a post-annealing treatment. This CoFe2O4 nanosheets was employed as a supercapacitor electrode and exhibited an excellent capacitance of 503 F g−1 at a current density of 2 A g−1. When the current density increased to 20 A g−1, the capacitance of CoFe2O4 nanosheets can maintain 78.5% (395 F g−1) of the initial value, indicating the remarkable rate capability of the as-prepared CoFe2O4 nanosheets. An aqueous asymmetric supercapacitor (ASC) based on CoFe2O4 nanosheets as a positive electrode and the activated carbon (AC) as a negative electrode was assembled for the first time. The as-fabricated ASC delivered a specific capacitance of 73.12 F g−1 at a current density of 1.2 A g−1 in a voltage window of 1.5 V. The CoFe2O4//AC ASC could achieve a high energy density of 22.85 W h kg−1 and good long-term cycling stability (98% retention after 5000 cycles). These results demonstrated that CoFe2O4 nanosheets could be one of the promising electrode material for supercapacitors applications." @default.
- W2604242135 created "2017-04-14" @default.
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- W2604242135 date "2017-08-01" @default.
- W2604242135 modified "2023-10-12" @default.
- W2604242135 title "Hierarchically porous CoFe2O4 nanosheets supported on Ni foam with excellent electrochemical properties for asymmetric supercapacitors" @default.
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- W2604242135 doi "https://doi.org/10.1016/j.apsusc.2017.04.067" @default.
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