中文摘要：

采用盐酸对乙醇火焰燃烧制备的螺旋碳纳米纤维（CNCs）进行纯化，用KOH对纯化后的CNCs进行活化，利用透射电子显微镜（TEM）和氮气自动吸附仪分析了纯化及活化对CNCs形貌及孔结构的影响，并考察了活化后CNCs电化学容量的变化。结果表明：盐酸纯化处理去除了CNCs中大部分催化剂颗粒，并使比表面积增加；活化后CNCs长度明显变短，比表面积显著增加，纤维壁也较活化前变得粗糙；活化后的CNCs电化学容量显著提高，比电容由未经处理时的40F／g提高到107F／g。

英文摘要：

Carbon nanocoils （CNCs）, prepared by the flame combustion of ethanol, were purified and activated sequentially with hydrochloric acid and KOH. The morphology and structure of CNCs were characterized by means of transmission electron microscopy （TEM） and N2 adsorption. The results show that most of the catalyst particles could be removed by hydrochloric acid and the CNCs specific surface area enlarged while the morphologies changed little. Short tube length and rough tube walls were obtained by an activating treatment of CNCs using KOH as activating agent and the specific surface area enlarged remarkably. The electrochemical capacity of activated CNCs is 107 F/g,which is much higher than 40 F/g of pristine carbon nanocoils.