One‐Step Solvothermal Synthesis of 3D Hierarchical NixCo9‐xS8 Structures for High‐Performance Supercapacitors
作者： Rongna Chen , Lei Liu , Li Hou , Junshuang Zhou , Faming Gao
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摘要: A novel 3D flowerlike NixCo9-xS8 nanosheets with polyvinyl pyrrolidone as morphology agent have been synthesized via one-step solvothermal synthesis procedure. This easy-to-make (P-NixCo9-xS8) achieve high specific surface area and outstanding electrochemical performance. When for electrode materials, it demonstrates excellent capacitance of 1319.76 F/g at 1A/g, good rate performance 1040.4 20A/g. Also, achieves remarkable cycling stability that still retains 93.7% max capacity after 1500 cycles the current density 10 A/g, Even, 71.2% 4000 cycles. Besides, fabricated P-NixCo9-xS8//AC asymmetric supercapacitor (ASC) emerges capacitive capacitance(119.9 F/g), energy (43.80 Wh/kg 821.25 W/kg) power (30.30 15.58 kW/kg).
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