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MoS2/CoS2 composites composed of CoS2 octahedrons and MoS2 nano-flowers for supercapacitor electrode materials

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Abstract

In pursuing excellent supercapacitor electrodes, we designed a series of MoS2/CoS2 composites consisting of flower-liked MoS2 and octahedron-shaped CoS2 through a facile one-step hydrothermal method and investigated the electrochemical performance of the samples with various hydrothermal time. Due to the coupling of two metal species and a big amount of well-developed CoS2 and MoS2, the results indicated that the MoS2/CoS2 composites electrodes exhibited the best electrochemical performance with a large specific capacitance of 490 F/g at 2 mV/s or 400 F/g at 10 A/g among all samples as the hydrothermal time reached 48 h (MCS48). Furthermore, the retention of MCS48 is 93.1% after 10000 cycles at 10 A/g, which manifests the excellent cycling stability. The outstanding electrochemical performance of MCS48 indicates that it could be a very promising and novel energy storage material for supercapacitors in the future.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 51572145).

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Authors and Affiliations

  1. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China

    Haiyan Li, Yucheng Zhao & Chang-An Wang

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  1. Haiyan Li
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  2. Yucheng Zhao
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  3. Chang-An Wang
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Correspondence to Chang-An Wang.

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Li, H., Zhao, Y. & Wang, CA. MoS2/CoS2 composites composed of CoS2 octahedrons and MoS2 nano-flowers for supercapacitor electrode materials. Front. Mater. Sci. 12, 354–360 (2018). https://doi.org/10.1007/s11706-018-0437-9

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  • DOI: https://doi.org/10.1007/s11706-018-0437-9

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