NiCo2O4 nanolayer cover on carbon cloth as anode materials for supercapacitors
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NiCo2O4 nano-layer covered on surface of carbon cloth for high-performance supercapacitors is successfully fabricated by a one-step route which only involved a modified sol–gel method. The binder-free electrode only with simple layer covering on carbon cloth displays outstanding pseudocapacitive behaviors in 2 M KOH, which exhibits high specific capacitances of 944.5 F g−1 at 1 A g−1 and 702.4 F g−1 at 20 A g−1after activation, as well as excellent cycling stability. The specific capacitance can still retain 859.5 F g−1 (91% retention) at a current density of 1 A g−1 after 3500 cycles.
In this paper, we report the synthesis of nanostructured NiCo2O4@carbon cloth (NC@C) electrodes by sol–gel method.
The synthesis strategy involves a novel method:sol–gel method to fabricate binder-less electrode.
The synthesized NiCo2O4 nano layer uniformly covered on the surface of carbon nanofibers.
The synthesized NiCo2O4@carbon cloth electrode exhibits excellent electrochemical performance.
KeywordsSupercapacitor Sol–gel NiCo2O4 Binder-free
This work is supported by the National Natural Science Foundation of China (grant Nos. 51472271, 51772331).
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Conflict of interest
The authors declare that they have no conflict of interest.
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