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首页> 外文期刊>RSC Advances >Low-temperature microwave-assisted hydrothermal fabrication of RGO/MnO2-CNTs nanoarchitectures and their improved performance in supercapacitors
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Low-temperature microwave-assisted hydrothermal fabrication of RGO/MnO2-CNTs nanoarchitectures and their improved performance in supercapacitors

机译：RGO / MnO2-CNTs纳米结构的低温微波辅助水热制备及其在超级电容器中的改进性能

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摘要

Reduced graphene oxide (RGO)/birnessite-type manganese dioxide (MnO2) nanoarchitectures were fabricated by a rapid microwave-assisted hydrothermal route at low temperature (60 degrees C). Graphene oxide (GO) reduced in the presence of poly(sodium 4-styrenesulfonate) (PSS) and carbon nanotubes (CNTs) were introduced as conductors to fabricate three-dimensional (3D) electroactive nanoarchitectures. The microstructures of the nanoarchitectures were systematically characterized by SEM, TEM, and BET. The optimized nanoarchitectures were found to exhibit superior electrochemical performance. Their specific capacitance value reached 304 F g(-1) at 1 A g(-1) and even remained as high as 250 F g(-1) at 10 A g(-1) in 1 M Na2SO4 electrolyte. A negligible decline (2.5%) of the initial capacity was observed after 1200 cycles at 4 A g(-1).
机译：通过快速的微波辅助水热法在低温（60摄氏度）下制备了还原型氧化石墨烯（RGO）/水钠锰矿型二氧化锰（MnO2）纳米结构。引入在聚（4-苯乙烯磺酸钠）（PSS）和碳纳米管（CNT）存在下还原的氧化石墨烯（GO）作为导体，以制造三维（3D）电活性纳米体系结构。通过SEM，TEM和BET系统地表征了纳米结构的微观结构。发现优化的纳米结构表现出优异的电化学性能。在1 M Na2SO4电解质中，它们的比电容值在1 A g（-1）时达到304 F g（-1），甚至在10 A g（-1）时仍高达250 F g（-1）。在4 A g（-1）下经过1200次循环后，观察到初始容量的微不足道的下降（2.5％）。

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