Abstract
Mesoporous NiCo2S4 particles deposited on reduced graphite oxide (RGO) sheets using the co-polymer Pluronic F127 as a structure-directing agent have been successfully prepared as a supercapacitor electrode. The formation of F127 micelles alleviated the aggregation of the RGO sheets and generated NiCo2S4 nanoparticles through hydrophilic affinity of ethylene oxide (EO) ends to produce porous channels during the hydrothermal process. This resulted in a large specific area of the prepared material, and superior electrochemical performance in terms of outstanding rate capability of 85.6% (from 1Ag−1 to 20Ag−1) and cycling stability (92.7% retention after 6500 cycles), features that are crucial for supercapacitors in practical application.
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