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首页> 外文期刊>International Journal of Electrochemical Science >Facile Preparation of MnO2 with Large Surface Area in a Rotor–Stator Reactor for Supercapacitors
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Facile Preparation of MnO2 with Large Surface Area in a Rotor–Stator Reactor for Supercapacitors

机译：在超级电容器转子-定子反应器中方便地制备大表面积的MnO 2

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Facile preparation of MnO2 with large specific surface area was explored in a rotortator reactor(RSR). The MnO2 product was characterized by FESEM, TEM, XRD, XPS, TG, FTIR and automatedsurface area and pore size analyzer. The electrochemical performance of the as-prepared MnO2nanospheres as an electrode material for supercapacitors was investigated using three-electrode andtwo-electrode methods. The results show that the MnO2 nanospheres were well dispersed and had a2 -1 -1 -1 surface area of 337.01 m g . The specific capacitance was as high as 320.7 F g at 0.3 A g and-1 -1 477.5 F g at 5 mV s . The as-prepared MnO2 also exhibited good stability with 107.4 % capacitanceretention after 1000 cycles. Moreover, the MnO2//active carbon asymmetric supercapacitor in 1 M-1 Na2SO4 electrolyte showed a maximum energy density of 27.23 W h kg and correspondingly power-1 density was 225 W kg .
机译：在转子反应器（RSR）中探索了大比表面积MnO2的简便制备方法。 MnO2产品通过FESEM，TEM，XRD，XPS，TG，FTIR和自动表面积和孔径分析仪进行表征。使用三电极和两电极方法研究了制备的MnO2纳米球作为超级电容器电极材料的电化学性能。结果表明，MnO2纳米球分散良好，a2 -1 -1 -1 -1表面积为337.01 m g。 0.3 A g时的比电容高达320.7 F g，5 mV s时的比电容高达-1 -1 477.5 F g。所制备的MnO2在1000次循环后还表现出良好的稳定性，电容保持率为107.4％。此外，在1 M-1 Na2SO4电解质中的MnO2 //活性炭不对称超级电容器的最大能量密度为27.23 W h kg，相应的power-1密度为225 W kg。

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