Conducting polymer/carbon nanocoil composite electrodes for efficient supercapacitors
Conducting polymer/carbon nanocoil composite electrodes for efficient supercapacitors
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DOI：
10.1039/c2jm15740c
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发表时间：
2012-02
影响因子：
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通讯作者：
R. B. Rakhi;Wei Chen;H. Alshareef
中科院分区：
文献类型：
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作者：
R. B. Rakhi;Wei Chen;H. Alshareef
在此，我们首次报道了导电聚合物（聚苯胺（PANI）和聚吡咯（PPY））包覆的碳纳米线圈（CNCs）作为高效的无粘结剂的超级电容器电极材料。碳纳米管作为一个完美的骨干，在复合材料中的导电聚合物的均匀分布。在双电极结构中，样品的比电容分别达到360和202 F g-1。所获得的复合材料的比电容和每单位质量的最大存储能量的值被认为是可比较的聚合物涂覆的多壁碳纳米管的最佳报道值之一。此外，所制造的基于PANI/CNC的超级电容器表现出每单位质量的最大存储能量的44.61 Wh kg−1的高值。虽然由于聚合物的不稳定性，器件表现出初始电容损失，但在500次充放电循环后，比电容稳定在固定值。
Herein, we report for the first time, conducting polymer (polyaniline (PANI) and polypyrrole (PPY)) coated carbon nanocoils (CNCs) as efficient binder-free electrode materials for supercapacitors. CNCs act as a perfect backbone for the uniform distribution of the conducting polymers in the composites. In two electrode configuration, the samples exhibited high specific capacitance with the values reaching up to 360 and 202 F g−1 for PANI/CNCs and PPY/CNCs respectively. The values obtained for specific capacitance and maximum storage energy per unit mass of the composites were found to be comparable to one of the best reported values for polymer coated multi-walled carbon nanotubes. In addition, the fabricated PANI/CNC based supercapacitors exhibited a high value of 44.61 Wh kg−1 for maximum storage energy per unit mass. Although the devices exhibit an initial capacitance loss due to the instability of the polymer, the specific capacitance stabilizes at a fixed value after 500 charge–discharge cycles.