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One-pot fabrication of flake Cu1.81S/C composite with size of 300 nm was successfully demonstrated in this work. As the supercapacitor electrode material, the obtained Cu1.81S/C composite sample displayed good cycling stability of 83.6% capacitance retention after 1000 cycles and high specific capacitance of 617 F g−1 at current density of 0.5 A g−1. The excellent electrochemical performance is mainly...
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