通过催化裂解法制备了碳纳米管并进一步制备了碳纳米管薄膜电极.基于该种材料的超电容器电极比容量达到36F/g.研究了在碳纳米管薄膜基体上使用电化学方法沉积氧化镍的新工艺,制备出碳纳米管和氧化镍的复合电极.电化学测试证明复合电极的比容量提高到52F/g以上且基于这种复合电极的超电容器具有极低的自放电率.
Carbon nanotubes prepared by a catalytic pyrolysis method were considered as active electrode materials
for the storage of energy in supercapacitors. Due to their unique mesoporosity, this material has a high ability for the accumulation of charges in the
electrode/electrolyte interface. Electrochemical capacitors based on carbon nanotube/nickel oxide composite electrodes were developed through the
electrochemical deposition of nickel oxide on the nanotube electrode. The value of capacitance obtained from nanotubes modified by nickel oxide
reaches 52F/g. The self-discharge rate of this supercapacitor is much lower than that of the supercapacitor composed of carbon nanotube electrode.
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