Abstract
MnMoO4 nanotubes of diameter about 120 nm were successfully synthesized by a single-spinneret electrospinning technique followed by calcination in air, and their structural, morphological, and electrochemical properties were studied with the aim to fabricate high-performance supercapacitor devices. The obtained MnMoO4 nanotubes display a 1D architecture with a porous structure and hollow interiors. Benefiting from intriguing structural features, the unique MnMoO4 nanotube electrodes exhibit a high specific capacitance, excellent rate capability, and cycling stability. As an example, the tube-like MnMoO4 delivers a specific capacitance of 620 F g−1 at a current density of 1 A g−1, and 460 F g−1 even at a very high current density of 60 A g−1. Remarkably, almost no decay in specific capacitance is found after continuous charge/discharge cycling for 10,000 cycles at 1 A g−1. An asymmetric supercapacitor fabricated from this MnMoO4 nanotubes and activated carbon displayed a maximum high energy density of 31.7 Wh kg−1 and a power density of 797 W kg−1, demonstrating a good prospect for practical applications in energy storage electronics.
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Funding
This work was financially supported by the National Natural Science Foundation of China (Nos. 51502257, 61574122, and 21373107), the Innovative Research Team (in Science and Technology) in University of Henan Province (No. 13IRTSTHN018), and the Nanhu Scholars Program for Young Scholars of XYNU.
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Lu, Y., Zhao, M., Luo, R. et al. Electrospun porous MnMoO4 nanotubes as high-performance electrodes for asymmetric supercapacitors. J Solid State Electrochem 22, 657–666 (2018). https://doi.org/10.1007/s10008-017-3781-2
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DOI: https://doi.org/10.1007/s10008-017-3781-2