SiO2 nanospheres assembled on MoS2 nanosheets for improving electrochemical performance for supercapacitors
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This article shows that carbon dots (CQDs), polystyrene sphere (PS) or silica sphere (SiO2) assembled on MoS2 have been successfully synthesized as electrode materials (CQDs/MoS2, PS/MoS2 and SiO2/MoS2) for supercapacitors by a simple hydrothermal process. It can be observed that SiO2 is distributed in the periphery of the flower-like MoS2, and the special morphology has a positive effect on electrochemical performance. As expected, SiO2/MoS2 as a promising electrode material for supercapacitor, exhibiting a higher specific capacitance of 1448.53 F g−1 at a current density of 5 A g−1 and good cycle stability of 70.10% retention after 2000 cycles. This method also provides a reference for the electrode material of supercapacitors with better performance in the future.
The work was funded by National Natural Science Foundation of China (Grant Nos. 21607013, 51602026), the Special Fund for Basic Scientific Research of Central Colleges, Chang’an University (Nos. 300102318108, 300102228203, 300102318106, 300102318402), College Students’ innovation and Entrepreneurship Project (201810710127, 201910710466).
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