【摘要】 对碳纳米管粉体在高温下进行空气和二氧化碳活化处理,并用于制作双电层电容器极板。结果显示:空气和二氧化碳活化可以有效的剥离和消除非晶碳,打开缠绕成团的管束和碳管端帽,腐蚀管壁,提高粉体分散性,改变碳纳米管的本征结构,使碳纳米管的比表面积增加。由活化后的碳纳米管制成的双电层电容器的比电容明显提高,等效串联电阻下降,性能得以改进。更多还原

【Abstract】 Carbon Nanotubes （CNTs） were activated by CO₂ and air under different durations, then were used in polarizable electrodes of electric double-layer capacitors （EDLCs）. Experiment results indicated that air and CO₂ activation could modify intrinsic structures and improve dispersity of CNTs. Specific capacitance of EDLCs based on activated CNTs were obviously improved and the equivalent series resistance decreased, but the effects were influenced by duration of activation process.更多还原