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首页> 外文会议>Batteries and energy technology (General) - 217th ECS meeting >Synthesis of Birnessite Type M11O2 Nanotubes and Their Application in Aqueous Supercapacitors
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Synthesis of Birnessite Type M11O2 Nanotubes and Their Application in Aqueous Supercapacitors

机译：Birnessite M11O2型纳米管的合成及其在水性超级电容器中的应用

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Potassium birnessite nanotubes have been made through a templated hydrothermal route with specific surface areas and pore volumes as high as 110 m~2 g~(-1) and 0.54 cm~3 g~(-1) respectively. After casting into electrode films and assembling into hybrid supercapacitor cells, good cyclability has been demonstrated, with high coulombic efficiencies, with changes in the electrodes during cycling being monitored through electrochemical impedance spectroscopy. High specific capacitances have been observed, with values approaching 350 F g" at current densities of 0.1 A g~(-1). Energy densities approaching 90 Wh g~(-1) have been achieved at low current densities, with power densities over 75000 W kg~(-1) at high current densities.
机译：采用模板水热法制备了水钠锰矿钾纳米管，其比表面积和孔容分别高达110 m〜2 g〜（-1）和0.54 cm〜3 g〜（-1）。在浇铸到电极膜中并组装到混合超级电容器电池中后，已证明具有良好的可循环性，具有高的库仑效率，并且通过电化学阻抗光谱法监测循环过程中电极的变化。观察到高的比电容，在0.1 A g〜（-1）的电流密度下其值接近350 F g“。在低电流密度下，功率密度超过200 Wh时，能量密度已达到90 Wh g〜（-1）。在高电流密度下为75000 W kg〜（-1）。

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