Abstract In this study, a consecutive doping method was used to improve the electrochemical properties of a commercial activated carbon (YP50f) as an electrode material for organic electric double-layer capacitors (EDLCs). In the consecutive doping method, nitrogen doping is carried out after an oxygen-doping process. Using the consecutive doping method, we prepared a carbon material with both a large specific surface area and high electrical conductivity. The specific surface area of the carbon material was mainly developed during the oxygen-doping step, whereas electrical conductivity was enhanced in the nitrogen-doping step. On the basis of the properties of the consecutively doped carbon material, we expected the prepared carbon material to exhibit good electrochemical properties when used as electrode materials for organic EDLCs. From the results of electrochemical characterizations, we observed that the consecutively doped carbon material showed a highly improved capacitance compared to the YP50f under all of the applied charge–discharge rates. Consequently, we concluded that the consecutive doping method is an effective method to prepare carbon materials with good electrochemical properties as electrode materials for organic EDLCs as a result of both their enhanced specific surface area and their enhanced electrical conductivity.

中文翻译：

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使用连续掺杂法改进用于有机双电层电容器的商用活性炭

摘要 在本研究中，采用连续掺杂的方法来改善商用活性炭（YP50f）作为有机双电层电容器（EDLCs）的电极材料的电化学性能。在连续掺杂方法中，氮掺杂是在氧掺杂工艺之后进行的。使用连续掺杂方法，我们制备了具有大比表面积和高导电性的碳材料。碳材料的比表面积主要在氧掺杂步骤中发展，而导电性在氮掺杂步骤中增强。基于连续掺杂的碳材料的特性，我们预期所制备的碳材料在用作有机 EDLCs 的电极材料时表现出良好的电化学性能。从电化学表征的结果中，我们观察到，在所有施加的充放电速率下，与 YP50f 相比，连续掺杂的碳材料显示出高度改善的电容。因此，我们得出结论，连续掺杂法是制备具有良好电化学性能的碳材料作为有机 EDLC 电极材料的有效方法，因为它们具有增强的比表面积和增强的导电性。