基于碳材料和二氧化錳的復合型超級電容器性能研究

摘要：利用碳材料廉價、高比電容、易制取等獨特優點，通過優化組合活性炭、碳納米管和二氧化錳材料的配比，制備碳基復合電極材料。根據循環伏安、交流阻抗和恒流充放電等實驗測試，結果顯示由上述復合電極組裝的電化學超級電容器具有較高的功率密度和能量密度，并具有適用于大電流放電的頻率特性和阻抗特性。經過若干次的充放電后，電容仍呈現出良好的循環特性。因此得出，由該炭基復合電極材料組成的超級電容器是一種理想的儲能器件。 敘詞：碳材料 超級電容器 儲能器件 Abstract：Since the carbon material has the advantage such as: cheapness, high specific capacitance and easy to produce. A carbon based electrode material was made via a optimized proportion of active carbon, carbon nano-tubes and MnO2.The results of cyclic voltammetry and alternate current impedance spectroscopy and charge-discharge demonstrate the capacitor made by the composite electrodes have large power density and energy density, and have perfect frequency and　impedance characteristics for high-current charge and discharge. The capacitor still has an excellent circulation property after many cycles of charge-discharge. As a result this carbon based super-capacitor is a kind of good device for energy storage. Keyword：Carbon material, Super-capacitors, Energy storage